KWS25A-12

AC/DC PCB Mount Power Supply (PSU), ITE, 1 Output, 26.4 W, 12 VDC, 2.2 A

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: TDK-LAMBDA
Product type: AC / DC PCB Mount Power Supplies
No. of Outputs:1 Output; Output Power Max:26.4W; Output Voltage - Output 1:12V; Output Current - Output 1:2.2A; Output Voltage - Output 2:-; Output Current - Output 2:-; Output Voltage - O
SVHC: No SVHC (15-Jan-2018)
Depth: 63.5mm
Width: 25.4mm
Height: 29mm
Product Range: KWS-A Series
No. of Outputs: 1 Output
Output Power Max: 26.4W
Input Voltage VAC: 85V AC to 265V AC
Input Voltage AC Max: 265V
Input Voltage AC Min: 85V
Power Supply Output Type: Fixed
Output Current - Output 1: 2.2A
Output Current - Output 2: -
Output Current - Output 3: -
Output Voltage - Output 1: 12VDC
Output Voltage - Output 2: -
Output Voltage - Output 3: -
Power Supply Applications: ITE

Delivery and price
Units per pack	50
Price	34.03 €
Current stock	10+
Lead time	30 days

Datasheet

KWS-A Series 

## Single output 5-25W AC-DC Board Mount Power Supplies 

https://product.tdk.com/en/power/kws-a www.emea.lambda.tdk.com/kws-a 

The industrial grade KWS-A series of 5W, 10W, 15W and 25W board mount  power supplies offer high efficiency levels of up to 88% in compact package sizes and footprints.  The KWS-A has a wide operating temperature range of -40 (start up) to +85°C with derating above 45/55°C and less than 0.5W off-load power consumption. These converters are Class II double insulated, allowing operation without an earth ground connection. 

|**Features**|**Benefits**|
|---|---|
|• High Efficiency, Up to 88%|• Lower Operating Costs, Improved Thermal Performance|
|• Class B EMI with an External X Capacitor|• Minimal External Components Required|
|• Low No Load Power Consumption|• Energy Saving|
|• Wide Operating Temperature|• Operation In Harsh Environments|
|• Class II, Wide Range Input (85-265Vac)|• Global Application, No Earth Required|



## **Model Selector** 

|Model|Output Voltage|Maximum Current|Maximum Power|Load Reg|Line Reg|Ripple /Noise|Efficiency (typ)%|
|---|---|---|---|---|---|---|---|
||(V)|(A)|(W)|(mV)|(mV)|(mV)|115/230Vac|
|KWS5A-5|5|1|5|40|20|200|76 / 74|
|KWS10A-5|5|2|10|40|20|200|76 / 77|
|KWS15A-5|5|3|15|40|20|200|77 / 78|
|KWS25A-5|5|5|25|40|20|200|81 / 82|
|KWS5A-12|12|0.45|5.4|96|48|240|78 / 75|
|KWS10A-12|12|0.9|10.8|96|48|240|80 / 81|
|KWS15A-12|12|1.3|15.6|96|48|240|81 / 83|
|KWS25A-12|12|2.2|26.4|96|48|240|84 / 86|
|KWS5A-15|15|0.35|5.3|120|60|240|79 / 75|
|KWS10A-15|15|0.7|10.5|120|60|240|81 / 82|
|KWS15A-15|15|1|15|120|60|240|82 / 84|
|KWS25A-15|15|1.7|25.5|120|60|240|85 / 87|
|KWS5A-24|24|0.22|5.3|150|96|240|80 / 77|
|KWS10A-24|24|0.5|12|150|96|240|82 / 84|
|KWS15A-24|24|0.7|16.8|150|96|240|82 / 85|
|KWS25A-24|24|1.1|26.4|150|96|240|86 / 88|



**KWS25A -24** 

**Series Name and Output Power Output Voltage** KWS5A - 5W 5, 12, 15 or 24V KWS10A - 10W KWS15A - 15W KWS25A - 25W 

KWS-A Series 

1 

**==> picture [516 x 34] intentionally omitted <==**

|**Specifcations**|**Specifcations**|**Specifcations**|**Specifcations**|**Specifcations**|**Specifcations**|
|---|---|---|---|---|---|
|Model<br>KWS5A<br>|||KWS10A|KWS15A|KWS25A|
|<br> **Input**||||||
|AC Input Voltage Range (Operating)|Vac|85 - 265. Derate to 80% load from 100 to 85 input (KWS5A 90% load from 90 to 85)<br>||||
|Nominal Input Voltage Range|Vac|100 - 240 (Note: Safety certifed for 90-264Vac only)<br>||||
|DC Input Voltage Range|Vdc|120 - 370 (Note: Safety certifed for AC input only)||||
|Input Current (115/230Vac)|A|0.13 / 0.07|0.25 / 0.13|0.33 / 0.24|0.56 / 0.34|
|Inrush Current at 200Vac (typ) (Cold Start)|A|30||||
|Leakage Current (264Vac)|uA|<250||||
|Harmonic Compliance|-|Designed to meet IEC61000-3-2||||
|No Load Power Consumption|W|<0.5. See evaluation data on website for measured results||||
|Hold Up Time (typ) at 115 / 230Vac Input(1)<br>|ms|15 / 45|10 / 30|||
|Effciency|-|See model selector table||||
|Conducted & Radiated EMI|-|EN55011/EN55032-A, FCC-A, VCCI-A. (External components are required for B, consult Evaluation Data)||||
|Immunity|-|IEC61000-4-2, -3, -4, -5, -6, -8, -11; IEC61000-6-2 (See immunity table below and immunity reports on website)||||
|Insulation Class<br>|-|Class II||||
|Safety Certifcations and Markings|-|IEC/UL/CSA/EN62368-1, 60950-1, CE Mark and UKCA Mark||||



## **Immunity** 

|**Immunity**|**Immunity**|**Immunity**|**Immunity**|**Immunity**|
|---|---|---|---|---|
||||||
|Test|Standard|Test Level|Criteria|Notes|
|ESD|EN61000-4-2|Air ±8kV and contact ±4kV|B|See immunity reports on website for more details|
|Radiated Susceptibility|EN61000-4-3|80M -1GHz: 10V/m<br>1.4 - 2.0GHz: 3V/m<br>2.0 - 2.7GHz: 1V/m|A||
|Electrical Fast Transient Burst|EN61000-4-4|± 2kV|B||
|Surge|EN61000-4-5|Normal Mode ± 1kV|B||
|Conducted Susceptibility<br>|EN61000-4-6|10Vrms|A||
|Magnetic felds|EN61000-4-8|30A/m|A||
|Voltage Dips<br>and Input Interruptions|EN61000-4-11|30% 500ms<br>60% 10ms<br>100% 20ms<br>100% 5000ms|B||



## **Specifications** 

|**Specifcations**|**Specifcations**|**Specifcations**|**Specifcations**|**Specifcations**|**Specifcations**|
|---|---|---|---|---|---|
|Model<br>KWS5A<br>|||KWS10A|KWS15A|KWS25A|
|<br> **Output**||||||
|Output Voltage Tolerance|%|±5||||
|Output Voltage Adjustment|-|None||||
|Switching Frequency (Fixed)|kHz|130||||
|Line Regulation|-|See model selector table||||
|Load Regulation|-|See model selector table||||
|External Load Capacitance|uF|5V: 2000, 12/15: 820, 24V: 330|5V: 2000, 12/15: 1000, 24V: 390|5V: 2000, 12/15: 1000, 24V: 560|5V: 4700, 12/15: 2200, 24V: 1500|
|Ripple & Noise<br>|-|See model selector table||||
|Temperature Coeffcient|%/°C|<br>0.02||||
|Minimum Load|-|No minimum load required||||
|Overcurrent Protection|%|>105. Hiccup with auto recovery||||
|Overvoltage Protection|V|5V: 5.75 - 7, 12V: 13.8 - 18.3, 15V: 17.25 - 22.4, 24V: 27.6 - 34.0||||
|Parallel Operation|-|Not possible||||



KWS-A Series 

2 

## **Specifications** 

|Model<br>||KWS5A|KWS10A|||KWS15A||KWS25A|
|---|---|---|---|---|---|---|---|---|
|<br> **Environmental**|||||||||
|Operating Temperature|°C|-40 start-up; -10 to +85. Derate linearly to 10% load from +55 to +85(2)|||||||
|Storage Temperature|°C||-40 to +85||||||
|Humidity (non condensing)|%RH||30 - 90 Operating, 20 - 95 Storage||30 - 90 Operating, 20 - 95 Storage||||
|Cooling|-||Convection||Convection||||
|Altitude|m||3000||||||
|Withstand Voltage (For 1 minute)|Vac||Input to Output 3,000||||||
|Isolation Resistance|MΩ||>100 at 25°C, 70%RH & 500VDC||>100 at 25°C, 70%RH & 500VDC|>100 at 25°C, 70%RH & 500VDC|||
|Vibration (non operating)|-|10-55Hz (Sweep for 1min.) Amplitude 1.65 mm (Max 10G, 98m/s||10-55Hz (Sweep for 1min.) Amplitude 1.65 mm (Max 10G, 98m/s2) Constant  X,Y,Z 1 hour each|||) Constant  X,Y,Z 1 hour each|) Constant  X,Y,Z 1 hour each|
|Shock (non operating)|-||Less than 50G (490m/s2), 11ms, ±X, ±Y, ±Z 3 times each|||), 11ms, ±X, ±Y, ±Z 3 times each|||
|**Other**|||||||||
|Weight (Typ)|g|35|35|||60||85|
|Size (LxWxH)|mm|38.1 x 25.4 x 21.5|38.1 x 25.4 x 21.5||50.8 x 25.4 x 24|||63.5 x 25.4 x 29|
|Size (LxWxH)|Inches|Inches<br>1.5 x 1.0 x 0.85|1.5 x 1.0 x 0.85||2.0 x 1.0 x 0.94|||2.5 x 1.0 x 1.14|
|Case Material|-||Plastic, UL94V0|||Plastic, UL94V0|||
|MTBF - Telcordia SR-332 issue 3* Hours|MTBF - Telcordia SR-332 issue 3* Hours|14,416,059|7,784,121|||8,202,502||5,747,627|
|Warranty|yrs||3||||||



Notes: 

See website for detailed specifications, test methods and installation manual 

*24V model, 25°C ambient, full load, 230Vac Input 

(1) At 100Vac and 115Vac with 80% load (70% load for KWSA10), 200Vac and 230Vac with 100% load 

(2) KWS10A-5, KWS15A-5, KWS25A-5: Derate linearly to 10% load from +45 to +85°C 

## **KWS5A, KWS10A Outline Drawing** 

KWS-A Series 

3 

**==> picture [196 x 11] intentionally omitted <==**

**----- Start of picture text -----**<br>
KWS15A Outline Drawings & Pin Out<br>**----- End of picture text -----**<br>


## **KWS25A Outline Drawings & Pin Out** 

KWS-A Series 

4 

## **TDK-Lambda France SAS** 

Tel: +33 1 60 12 71 65 tlf.fr.powersolutions@tdk.com www.emea.lambda.tdk.com/fr 

## **TDK-Lambda Americas** 

Tel:  +1 800-LAMBDA-4 or 1-800-526-2324 tla.powersolutions@tdk.com www.us.lambda.tdk.com 

## **Italy Sales Office** 

Tel: +39 02 61 29 38 63 tlf.it.powersolutions@tdk.com www.emea.lambda.tdk.com/it 

## **Netherlands** 

## **TDK Electronics do Brasil Ltda** 

Tel: +55 11 3289-9599 sales.br@tdk-electronics.tdk.com www.tdk-electronics.tdk.com/en 

tlf.nl.powersolutions@tdk.com www.emea.lambda.tdk.com/nl 

## **TDK-Lambda Germany GmbH** 

Tel: +49 7841 666 0 tlg.powersolutions@tdk.com www.emea.lambda.tdk.com/de 

## **TDK-Lambda Corporation** 

Tel: +81-3-6778-1113 www.jp.lambda.tdk.com 

## **TDK-Lambda (China) Electronics Co. Ltd.** 

Tel: +86 21 6485-0777 tlc.powersolutions@tdk.com www.lambda.tdk.com.cn 

## **Austria Sales Office** 

Tel: +43 2256 655 84 tlg.at.powersolutions@tdk.com www.emea.lambda.tdk.com/at 

## **Switzerland Sales Office** 

Tel: +41 44 850 53 53 tlg.ch.powersolutions@tdk.com www.emea.lambda.tdk.com/ch 

## **Nordic Sales Office** 

## **TDK-Lambda Singapore Pte Ltd.** 

Tel: +65 6251 7211 tls.marketing@tdk.com www.sg.lambda.tdk.com 

## **TDK India Private Limited, Power Supply Division** 

Tel:   +91 80 4039-0660 mathew.philip@tdk.com www.sg.lambda.tdk.com 

Tel: +45 8853 8086 tlg.dk.powersolutions@tdk.com www.emea.lambda.tdk.com/dk 

## **TDK-Lambda UK Ltd.** 

Tel: +44 (0) 12 71 85 66 66 tlu.powersolutions@tdk.com www.emea.lambda.tdk.com/uk 

## **TDK-Lambda Ltd.** 

Tel: +9 723 902 4333 tli.powersolutions@tdk.com www.emea.lambda.tdk.com/il-en 

For additional information, please visit ~~ee~~ https://product.tdk.com/en/power/ 

KWS-A_ 260873_October 25th, 2022 V2 

KWS-A Series 

5

Updated at June 3, 2026

TDK-Lambda is globally recognized as a premier manufacturer of highly reliable power supply solutions and power management equipment. With a strong engineering heritage, the company is a trusted partner for mission-critical applications across the industrial, medical, telecommunications, and test and measurement sectors, delivering components that meet stringent international performance and safety standards. Our extensive portfolio of TDK-Lambda products is heavily focused on comprehensive power and line protection, highlighted by a vast selection of industry-leading AC/DC converters. Engineered to deliver exceptional efficiency and stable performance in demanding environments, these power supplies form the backbone of our offering and are built to support the rigorous power demands of modern electronic infrastructure. To complement these primary power solutions, we also offer a targeted range of high-performance DC/DC converters designed for precise, board-level voltage regulation. Furthermore, to ensure the optimal performance and longevity of these power systems, our catalog includes specialized cooling and thermal management components, such as natural convection heat sinks, providing complete thermal stability for your most critical designs.

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