The familiar 220 V is the standard network voltage for housing in Russia: apartments, dachas and private houses. At this voltage with a 10% error (from 200 to 240 V), all electrical appliances in our homes work properly - light bulbs do not blink, the TV does not turn off, gas boilers and other sensitive equipment do not fail. But the reality is that the voltage can be too low, too high, or too high. To avoid flashing lights and frequent breakdowns of electrical appliances, use a voltage stabilizer.
Purpose of the article: talk about reliable companies that have been producing voltage stabilizers for more than 10 years. Simplify the choice of the appropriate model based on the buyer’s needs and budget.
The reasons for unstable voltage are different. They can appear separately or, worst of all, together. They may be visible to the naked eye, or they may be invisible. Here are the most common:
For apartments:
For cottages and private houses:
Sometimes the condition of networks suffers. For example, distribution boards are rarely maintained: loose contacts pose a great danger here. If a “phase” or “zero” burns out, the voltage on the serviceable phases will decrease or increase.
So, you need a stabilizer:
Even if the voltage in the house is visually normal, the stabilizer will be a good protector of your expensive equipment. No one is immune from sudden power surges: if a powerful consumer suddenly connects to the network, the equipment may break down.
Voltage stabilizers are installed at a specific device or distribution panel in the house: in the first case, they protect expensive equipment, in the second - the entire network. Follow our step-by-step instructions to choose the device that's right for you.
| Step 1. Determine the active power* of the stabilizer | ||
|---|---|---|
| Active power | up to 5 kW | Ideal for: installations in an apartment with a connection to a separate device - a computer, washing machine, gas boiler; installations in a country house with a small set of appliances: a refrigerator, a TV and a microwave oven. |
| 5-8 kW | Ideal for: installations in an apartment or house with a standard set of electrical appliances: refrigerator, washing machine, microwave oven, PC, TV. | |
| 8-10 kW | Ideal for: installations in homes with frequent use of power tools - pumps, drills and welding machines. | |
| Step 2. Select the principle of operation of the stabilizer | ||
| Type of stabilizers according to operating principle | Relay |
Ideal for: installations in a separate room and in the absence of voltage-sensitive lamps |
| Electromechanical |
Ideal for: gas boilers and sensitive equipment at low network surges (from 180 to 260 V) |
|
| Electronic |
Ideal for: protecting a network with connected expensive and complex equipment - air conditioning, TV, computer, etc. |
|
| Inverter |
Ideal for: network protection with connected expensive equipment and during voltage surges from 90 to 380 V |
|
| Step 3: Select Input Voltage Range Width | ||
| Input voltage range, V | From 180 to 260 (narrow) | Ideal for: apartments, because There are no strong voltage surges in apartment buildings |
| From 140 to 260 (standard) | Ideal for: protection of networks in a country house or in a private house, when the old electrical network is not designed for a growing number of consumers | |
| From 110 to 300 (wide) | Ideal for: protection of networks from sharp and sudden power surges when connecting powerful devices to the network - circular saws, machine tools, welding machines, etc. | |
| Step 4: Select additional features | ||
| Cooling system | Natural |
Ideal for: houses, cottages and apartments with low power consumption |
| Forced |
Ideal for: houses with high power consumption or the ability to place the device outside residential premises |
|
| Accommodation | Wall | Ideal for: apartments, as well as dachas and houses with a small area, where every meter of space is important |
| Floor | Ideal for: houses with a large area with installation in a separate room | |
| Connection method | Through a socket | Ideal for: protection of individual devices |
| Via terminals | Ideal for: protection of all devices in the house | |
| Bypass mode available** | Eat | Ideal for: connecting a powerful device whose power is greater than the power of the stabilizer. For example, when connecting a welding machine. |
*Active power- the maximum possible load on the stabilizer, measured in W. Not to be confused with apparent power in VA. We have given an example of calculating the required active power at the end of the article.
**Bypass(English Bypass) - the ability to pass the current at the stabilizer input directly to the output without voltage equalization. This function is necessary when the total power of the connected devices is greater than the power of the stabilizer: otherwise the current protection will work and all devices will be disconnected from the network.
If you know how much the voltage in your network differs from 220 V and how much power your devices consume, all that remains is to decide on the manufacturer and select a suitable stabilizer. We tried to simplify this task for you and selected 17 worthy models from 8 different manufacturers.
| Stabilizers 1.4-8 kW | ||
|---|---|---|
| 1. |
Ideal for: installations in an apartment, house and cottage for the entire network |
RUB 33,500 |
| 2. |
Ideal for: protecting a gas boiler from power surges |
3,900 ₽ |
| 3. |
Ideal for: durable use over 10 years |
14,200 RUR |
| 4. |
Ideal for: network protection on a limited budget |
10,000 ₽ |
| 5. |
Ideal for: protection of expensive equipment |
64,200 RUR |
| 6. |
Ideal for: protection of inexpensive devices at voltage 140-260 V |
5 650 ₽ |
| 7. |
Ideal for: protection of expensive and sensitive equipment |
57,320 RUR |
| 8. |
Ideal for: installation in a separate room to protect gas boilers or the network as a whole |
10,000 ₽ |
| 9. |
Ideal for: installations in a country house or in a private house with constant low voltage |
13,870 RUR |
| 10. |
Ideal for: installations in unheated rooms down to -30°C |
16,500 RUR |
| Stabilizers 8-10.5 kW | ||
| 11. |
Ideal for: protection of devices with constantly jumping voltage |
15,800 RUR |
| 12. |
Ideal for: protection of devices with input voltage from 160 V |
10,430 ₽ |
| 13. |
Ideal for: installations in a private home with frequent power surges |
36,000 ₽ |
| 14. |
Ideal for: installations in any home |
42,600 ₽ |
| 15. |
Ideal for: installations in unheated rooms |
39,500 ₽ |
| 16. |
Ideal for: installations in a private house in unheated rooms |
59,900 ₽ |
| 17. |
Ideal for: installations in a private house with a three-phase network |
55 300 ₽ |
Now let’s study the characteristics of these models in more detail, read customer reviews and watch video reviews with a visual demonstration of the device.
at a price of 33,500 rubles.
Lider PS5000SQ-25 is a 5 kW electronic voltage stabilizer from the Russian manufacturer INTEPS Group of Companies with a 5-year warranty. Thanks to a circuit of two transformers, a block of American IXYS thyristors and microprocessor control, a high voltage stabilization accuracy of 1.4% (±3 V) is achieved. Unlike models with an accuracy of 7-8%, Lider PS5000SQ-25 completely eliminates light flickering during frequent voltage fluctuations.
The operating range of input voltage - 160-280 V - allows you to control a full range of devices in the house. And the shutdown limits of the device are 135-290 V: it can cope with normal voltage surges.
The advantage of the device is its universal installation: firstly, the device, operating at temperatures from -40 to +40 ° C, can be installed even in a cold, unheated room. Secondly, it can be placed both on the floor and on the wall. Thirdly, silent operation will not interfere with people’s comfort if it is installed in a living room.
Buyers should like the guarantee of operation of the device - it is 12 years. In addition, the manufacturer is located in Pskov and has almost 30 years of experience in the production of such devices.
In the video, a representative of the INTEPS Group demonstrates a device from the same SQ series in operation: you can see how quickly the device stabilizes the voltage, how it behaves when the load is reduced or increased to the limits, and what the filling of the device is like.
at a price of 3,900 rub.
Energy ASN 2000 is an inexpensive relay stabilizer that is suitable for protecting a gas boiler in an apartment. Here, conventional relays are replaced by electronic ones: this gives the device a faster response to voltage changes - only 4 ms. This means that sensitive equipment will practically not notice voltage surges.
Two more advantages of electronic relays are almost silent switching and long service life. The device can be placed in a living room on the floor or in a cold room: it will operate at temperatures from -20 ° C and a relative humidity of 95%.
Energy ASN 2000 can operate with a switch-on delay of 6 or 180 seconds. This will be needed when the voltage goes beyond the range of 120-280 V and the device automatically turns off. And if the voltage does not return to the range within the set time, the device will continue to monitor it. This is necessary so that the stabilizer starts working without cycling on and off.
Buyers appreciate the compactness of the device and high-quality operation at low voltages. In addition, they advise paying attention to the ASN Energy line in general: it contains more powerful models that can protect the entire network in the house.
And here is a video review of the Energy ASN series: here you can find out which devices are worst affected by low or high voltage and how the ASN series model behaves under load.
at a price of 14,200 rub.
Another device from Energy that can be installed in an apartment is Hybrid 5000 (U). This is an electromechanical stabilizer that is suitable for connecting all devices in the apartment. The device has a high stabilization accuracy - up to 3%. This, coupled with a wide voltage range of 135-255 V, will help the user forget about power surges and problems with electrical appliances.
Universal installation (wall or floor), modern design and silent operation will not spoil the decor in the apartment. The only point is that the device is connected through terminals: it will have to be placed near the electrical panel.
A distinctive feature of the Energy device is the ability to increase service life. This is achieved by manually adjusting the error (up to 5%) and response speed (9 speeds in total). You will be able to use the device longer than the stated estimated service life of 10 years.
Buyers like the Hi-Tech style display, installation versatility and high accuracy of the device. The disadvantages are the high weight and the inability to use the device at low temperatures.
A video review of the Energy Hybrid (U) line will introduce you to the operating principle of the devices, differences from previous generation stabilizers, and features that can only be found within this line.
at a price of 10,000 rubles.
The electromechanical stabilizer ASN-5000 from the Latvian manufacturer Resanta is suitable for installation in an apartment with a small number of devices. It is characterized by high stabilization accuracy, but low voltage equalization speed - 10 V/s. For this reason, it is better not to use it when the voltage changes frequently over a wide range. The device is suitable for those who have minor deviations in the network within 10-20%.
In general, the device has good characteristics: high efficiency up to 97%, protection against short circuit, overheating and overvoltage, as well as a bypass. It is most convenient to place the device near the electrical panel: it is connected via terminals.
Resanta supports users who leave reviews on Yandex.Market with rubles: the last promotion - 100 rubles per phone per review - ended on August 22. But it's worth noting that everyone could only leave one comment.
To ensure that no one has any questions, we looked at reviews on other portals: there customers talked about their experience of using this device. For example, they like better stabilization compared to relay devices and stable operation within 190-250 V. The disadvantage is the inability to connect the device through an outlet.
A video review of a device from the same series will tell you about its advantages and demonstrate its main functionality.
at a price of 64,200 rub.
Ruselt SDP-1/1-10-220-T is an inverter device from the Tula plant of Elektromash JSC. It first converts the input AC voltage to DC, and then returns it to AC with an error of up to 1%. The stabilizer will protect sensitive equipment from the slightest voltage surges.
Ruselt can handle large surges well - from 110 to 300 V. An instant response to voltage changes will bring stability to the operation of HI-FI systems and expensive server equipment. The device is so reliable that it is installed in clinics and hospitals: it protects tomographs, ultrasound and MRI machines.
The device filters any interference and has a multi-level protection system: against short circuits, overloads, surges, overvoltage and undervoltage, and high-frequency harmonics.
Buyers note that the device fully complies with the characteristics specified in the technical documentation and the fast operation of the store.
This is a timelapse of the assembly of the Ruselt device from the SDP line: you can find out what’s inside it and, perhaps, understand why this device has an unusually high mass.
at a price of 5,650 rub.
Another ASN-5000/1-Ts device from Resanta, but with relay voltage stabilization, which is often purchased for the dacha. Do not forget that this device has an output voltage with an error of 8%: sometimes the display readings give incorrect information. This error is acceptable for relay devices, but for others its value should be no more than 1-3%.
This is one of the budget solutions that will solve the buyer’s problem if the required power is correctly calculated: judging by the reviews, frequent device breakdowns in half of the cases are explained by the wrong choice of product in terms of power.
A video review of the Resanta device will be useful if you want to see the device in action before purchasing.
at a price of RUB 57,320.
Shtil is a Tula company that has been producing voltage stabilizers, UPS and other power supply systems for 25 years. The Shtil InStab IS1110RT device is suitable for a summer house or a private home if you live there permanently. It will solve the problem of low voltage and protect sensitive devices: it is an inverter device with a wide input voltage range of 90-310 V.
The device will save the room from flickering lights if you have incandescent lamps. And when the voltage is relatively stable, the device will go into energy saving mode. Another plus is its universal installation: you can place it both on the floor and on the wall.
The Stihl company does not sell devices directly to individuals: it outsources this to dealers throughout the country. Here is a map of stores that sell Shtilya devices, and judging by the reviews, the Instab line has earned a good reputation among customers. The main thing that device owners highlight is instant voltage equalization. The downside is increased noise due to the operating cooling system.
This video review will demonstrate the appearance of the Shtil “InStab” IS1110RT, unusual for stabilizers, the accuracy of the output voltage and the behavior of the device under increased loads.
at a price of 10,000 rubles.
SVEN is a Finnish giant manufacturer of speaker systems and accessories for computers, which suddenly declared itself in the voltage stabilizer market. SVEN VR-A10000 is a relay device that is suitable for protecting an individual device - for example, a gas boiler - or an entire network with a small number of devices.
The characteristics of the device do not differ much from the general mass of stabilizers: a standard input voltage range of 140-275 V, a digital display and a power of up to 6 kW will help cope with small voltage surges. It is better to install the device in a non-residential area: noise from fans can interfere with comfort in living rooms.
Buyers like SVEN stabilizers for their durability, build quality and exceptional reliability under normal loads on the device. One of the disadvantages is the “ratchet” phenomenon: when the voltage fluctuates near the limit value, the relay switches from position to position, causing a rattling noise.
Watch a video review of a model from the same VR-A line: here they will talk about the main functions of the device.
at a price of 13,870 rub.
The ACH-6000 stabilizer from Resanta is an inexpensive option by the standards of inverter devices for installation in a country house with a constantly low voltage. It is designed to protect sensitive equipment, except for welding machines and voltage generators: experts do not recommend using inverter stabilization for these devices.
The model has a light weight - 4 kg: the buyer will be able to place it on the floor or hang it on the wall at his discretion. The characteristics of the device are standard: it protects devices with a total power of up to 6 kW. But it is worth remembering that this indicator at the input voltage<190 В снижается. При напряжении 150 В предельная мощность составит 4,5 кВт.
Reviews of the device vary: some like the reliability and wide functionality. Others, on the contrary, highlight high fan noise and problems with equipment after connecting the stabilizer to the network. We advise you to test the device in a store before purchasing: ask a consultant to connect it to a network with a load.
at a price of 16,500 rubles.
Relay stabilizer Energy Voltron 10000 (HP) is suitable for installation in a country house in cold rooms. It can withstand frost down to -30 °C: given the noise when switching the relay, this is an excellent opportunity to install it somewhere in the hallway or entryway.
The model can cope with voltage sags or too low a value: the operating Energy range is 105-265 V, and the maximum energy range is 95-280 V. The letters HP in the name of the device mean the second generation of the Voltron line: here, as the manufacturer claims, there are more durable relays and increased stabilization accuracy - 5% versus 10% in the first generation.
We found reviews for devices from the Voltron line: one of the main advantages that buyers highlight is operation at low temperatures and voltages. The downsides are the blinking of light bulbs and noise during power surges, which is inherent in all relay devices.
In the video review you will learn what functionality the device has and how to use it if the house is connected to a three-phase network.
at a price of 15,800 rub.
Rucelf SRW II-12000-L is a 10 kW relay model from a Russian manufacturer that will protect a private home from surge voltage. 6 relay stages will ensure stabilization accuracy with an error of up to 8%.
The device weighs 22 kg, which does not interfere with hanging it on the wall: a mounting device is included with the device. And thanks to overheating protection, you won’t have to worry about fire safety in your home.
Buyers like the design of the device, the low price for a power of 10 kW and the stabilization response speed. Disadvantages: noise from relay switching, flashing lights and high weight of the device.
A short video review from the 220 Volt store: it will give a general idea of the device.
at a price of 10,400 rubles.
Inexpensive relay stabilizer RESANTA LUX ASN-10000N, designed to protect a private house from low voltage 160 V. It has a standard set of functions: bypass, startup delay after turning off the device when the operating voltage range is exceeded and an output voltage error of 8%.
Despite the LUX prefix in the name, buyers often encounter breakdowns: they have to repair it themselves or take it to a service center. This may be due to the low price of the device with a stated power of 10 kW. One of the advantages is the rapid stabilization of voltage surges.
Get to know the device in a detailed video review: here they talk about the characteristics in general and test the device for various voltages.
at a price of 36,000 rubles.
The Classic 12000 electronic stabilizer from Energia will cope with voltage with a total power of 8.4 kW devices and is best suited for residents of private houses. The device is more expensive than most devices, but as the manufacturer claims, it is reliable and has a service life of 15 years.
Fast processing of voltage changes of 20 ms, coupled with silent operation, will help the buyer not to worry about the comfort in the home. The device has the widest input voltage range in this review, 60-265 V. In addition, it will operate at low temperatures down to -30 ° C.
All buyers list the advantages of the device as noiselessness, pleasant body design and long service life. The device has a 3-year warranty: customers also like this. Among the shortcomings, they point out that it is not the most convenient connection of wires to the network at home and the lack of wall mounting in the kit.
In the video review of the Classic line, you will get acquainted with the appearance of one of the devices and find out which models, besides the Classic 12000, are included in this line.
at a price of 42,600 rub.
Electronic voltage stabilizer from the Pskov manufacturer “Energia”: not to be confused with “Energia”, whose products are presented above. As with the previous device, the high cost is due to higher quality and durable work. Voltage equalization speed 500 V/s: this is one of the highest values for stabilizers.
The noise from operation is associated with the presence of a cooling system: you will have to place the device in a non-residential area. Pay attention to the room temperature: the device operates from +5 to +45 °C. The weight of the device is large - 31 kg, so it is installed on the floor.
The advantages that buyers highlight are silent operation when the fan is turned off, the absence of clicks like on relay devices and higher quality work compared to other manufacturers. Cons - high price.
From the video review you can learn about one device from the same PROGRESS line: they will demonstrate its operation under load.
at a price of RUB 39,500.
Another model from Leader: this is an electronic PS 10000W-50 with a power of 10 kW, which is suitable for a private home. The device operates at ultra-low temperatures - down to -40°C, so it can be placed in an unheated room without any problems.
The stabilizer is protected from device fire or electric shock. And this is not the only reason to call the filling “smart”: it has the ability to self-diagnosis. The device assigns a code to any emergency situation. The device's memory stores the codes of the last 32 load sheddings, so it's okay if you have to leave the device unattended for a while.
Buyers of devices from the Lider PS line are impressed by their Russian production. Despite the fact that the device is silent, it is not recommended to place it in a living room. Some people install it outdoors: the device can be purchased along with a vandal-proof housing. But remember that it must be protected from moisture.
In the video review below you can see how the device works.
at a price of RUB 59,900.
Energy Premium 12000 is an electronic stabilizer with a 15-year service life and a 5-year warranty for installation in a private home in unheated rooms. Its characteristics are fully consistent with the price: output voltage error of 1.5%, silent operation and 49 steps of voltage adjustment will ensure comfort in the home for a long time.
The device from Energy is a real find among the mass of standard devices. Firstly, it can be installed in 3 ways: on the floor, on the wall and on a special stand (purchased separately). Secondly, the cooling system fan has two speeds: they switch only after the device checks for the presence of large particles (dust, sand, pebbles) inside the case. Thirdly, it is a color display with comprehensive information about the status of the device and the network voltage.
In our rating, we have selected the 10 best voltage stabilizers that are widely available on the market and can best meet various requirements: whether you need a compact stabilizer for your computer or a powerful device that can protect your entire home, you can find a suitable model in our review.
The single-phase voltage stabilizer SDP-1/1-1-220-T with a power of 1 kVA is designed to reliably protect the user’s electrical equipment from low-quality network electricity, including distortion or deviations of the network voltage, as well as suppression of high-voltage pulses and high-frequency interference coming from the network. PSD with double energy conversion has the most advanced technology for providing high-quality electricity to the load over a wide range of input voltage, providing a sinusoidal output voltage. Such stabilizers are used for responsible consumers of electricity who place increased demands on the quality of power supply.
| Input parameters | |
|---|---|
| Network type | single-phase3-wire |
| Nominal input voltage (phase) | 220 V |
| Input voltage range | 175…280(50-100% load) 120…280(0-50% load) |
| Input voltage frequency | 50±5 Hz |
| Output parameters | |
| Rated power | 1 kVA (0.7 kW) |
| Rated output voltage (phase) | 220 V |
| Operating range of output voltages (phase) | 218-222 V |
| Output voltage frequency | 50±1 Hz |
| Output voltage form | sine wave |
| Efficiency, not less | 98 % |
| Load range | 0-100 % |
| Overload | less than 105% - long-term, 105-130% - 30 s, more than 130% - 200 ms |
| Performance | 20 ms |
| Voltage regulation principle | double energy conversion |
| Service functions | |
| Overload and short circuit protection | electronic protection and fuse link |
| Filter | weekend LC |
| Bypass | + |
| Indication of main operating modes / type of indication / list of indications | +/ LEDs / reasons for load disconnection, presence of input and output voltage |
| Design | |
| Network connection | terminal block |
| Load connection | terminal block |
| Cross-section of wires at the input/output of the stabilizer, not less | - |
| Continuous operation time | unlimited |
| Warranty period | 12 months |
| Climatic version (GOST 15150) | U3 |
| Ambient temperature | +0...+40 С° |
| Relative air humidity at temperature +20 °C, no more | 95% no condensation |
| Degree of protection (according to GOST 14254) | IP 20 |
| Mechanical influences (GOST 17516.1) | M1 |
| Cooling | forced |
| Weight no more | 4.2 kg |
| Dimensions (HxWxD) | 88x330x260 mm |
| Certificates | |
S.N. Kapiteltsev
The specificity of our organization’s work is the development and implementation of high-tech security system solutions. At the same time, great importance is given to ensuring the reliability and stability of equipment operation.
Cooperation with the RUSELT Group is based on the supply of voltage stabilizers that provide maximum protection for electronic equipment.
Based on the results of cooperation, we would like to note the high professionalism of the company’s employees and the constantly increasing level of product quality. Employees of the Ruselt Group promptly provide the necessary technical and information support, and complete deliveries on time and in full compliance with the requirements.
We hope for further mutually beneficial cooperation
E.Yu. Nikitin
Cooperation between NPP KUZBASSRADIO JSC and RUSELT Group was carried out as part of the acquisition of the voltage stabilizer SDP-1/1-1-220-T. The equipment produced and delivered in a short time meets all the necessary requirements and exactly matches the technical specifications. During operation, the stabilizer proved to be an effective solution to problems caused by poor-quality power supply.
We recommend the RUSELT group as a responsible partner and reliable supplier.
The circuit shown in Figure 1 is an adjustable voltage stabilizer and allows you to obtain an output voltage in the range of 1.25 - 30 volts. This allows you to use this stabilizer to power pagers with 1.5 volt power supply (for example Ultra Page UP-10, etc.), and to power 3 volt devices. In my case, it is used to power the “Moongose PS-3050” pager, that is, the output voltage is set to 3 volts.
Using variable resistor R2, you can set the required output voltage. The output voltage can be calculated using the formula Uout=1.25(1 + R2/R1).
A microcircuit is used as a voltage regulator SD 1083/1084. Without any changes, you can use Russian analogues of these microcircuits 142 KREN22A/142 KREN22. They differ only in output current and in our case this is not significant. It is necessary to install a small heatsink on the microcircuit, since at low output voltage the regulator operates in current mode and heats up significantly even at idle.
The device is assembled on a printed circuit board measuring 20x40mm. Since the circuit is very simple, I do not provide a drawing of the printed circuit board. Can be assembled without a board using surface mounting.
The assembled board is placed in a separate box or mounted directly in the power supply case. I placed mine in the housing of a 12 volt AC-DC adapter for cordless phones.
You must first set the operating voltage at the output of the stabilizer (using resistor R2) and only then connect the load.
Other stabilizer circuits.
This is one of the simplest circuits that can be assembled on an affordable chip. LM317LZ. By connecting/disconnecting a resistor in the feedback circuit, we get two different voltages at the output. In this case, the load current can reach 100 mA.
Just pay attention to the pinout of the LM317LZ chip. It is slightly different from the usual stabilizers.
A simple stabilizer for various fixed voltages (from 1.5 to 5 volts) and current up to 1A. can be assembled on a microcircuit AMS1117-X.X (CX1117-X.X)(where X.X is the output voltage). There are copies of microcircuits for the following voltages: 1.5, 1.8, 2.5, 2.85, 3.3, 5.0 volts. There are also microcircuits with adjustable output designated ADJ. There are a lot of these chips on old computer boards. One of the advantages of this stabilizer is its low voltage drop - only 1.2 volts and the small size of the stabilizer adapted for SMD installation.
It only requires a couple of capacitors to operate. For effective heat removal under significant loads, it is necessary to provide a heat removal pad in the area of the Vout terminal. This stabilizer is also available in TO-252 package.
