KMD40-1515

POWER SUPPLY, AC-DC, MEDICAL, 2O/P, 40W

⚠️ 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
; POWER SUPPLY, AC-DC, MEDICAL, 2O/P, 40W; No. of Outputs:2 Output; Output Power Max:40W; Output Voltage - Output 1:15V; Output Current - Output 1:1.33A; Output Voltage - Output 2:
SVHC: No SVHC (15-Jan-2018)
Depth: 88.9mm
Width: 63.5mm
Height: 26.924mm
Product Range: KM Series
No. of Outputs: 2 Output
Output Power Max: 40W
Input Voltage VAC: 90V AC to 264V AC
Power Supply Output Type: Fixed
Output Current - Output 1: 1.33A
Output Current - Output 2: 1.33A
Output Current - Output 3: -
Output Voltage - Output 1: 15V
Output Voltage - Output 2: -15V
Output Voltage - Output 3: -
Power Supply Applications: Medical

Delivery and price
Units per pack	10
Price	63.03 €
Current stock	10+
Lead time	30 days

Datasheet

- Small Size & Lightweight 

- PCB Board Mountable 

- Wide Range Input 

- Medical Safety Certifications (4kVAC Input - Output) 

- Class II (No ground needed) 

## **Key Market Segments & Applications** 

## KM Series 

## 15 to 40W Medical AC-DC PCB - Mount Power Supplies 

Portable Medical Equipment General Low Power Applications 

## _**Not Recommended for New Designs**_ 

KM Features and Benefits 

- Features Benefits • Small Size • Minimises PCB Space • Wide Input  Range • Global use with no manual intervention • High efficiency • Lower Heat Dissipated in System 

**==> picture [484 x 341] intentionally omitted <==**

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||||||||
|---|---|---|---|---|---|---|
|Specifications|
|MODELS|KMS15|KMD15|KMT15|KMS40|KMD40|KMT40|
|ITEMS|
|Input Voltage Range|-|90-264VAC 47-440Hz or 100-375VDC|
|Inrush Current Limiting|A|10 / 20A, cold start, 25°C ambient (115 / 230VAC)|
|Input Current (115 / 230VAC)|mA|220 / 118mA|860 / 460mA|
|Internal Fuse (live line)|[(1)]|-|250V/T2A|250V/T3.15A|
|Temperature Coefficient (O/PV)|-|±0.01%/°C|
|Ripple and Noise (pk-pk)|mV|50mV or 1%, whichever is greater|
|Overcurrent  Protection|-|105-200%, hiccup mode, automatic recovery|
|Overvoltage Protection|%|Yes, Zener diode clamp|
|Hold-up Time (typical)|ms|20ms|18ms|
|Touch Current|mA|< 0.1|
|-|
|Operating Temperature|-25°C to 70°C, derate linearly to 50% load from 50°C to 70°C.  Max case temperature 95°C|
|Storage Temperature|-|-40°C to 100°C|
|Humidity|%RH|20% to 95% RH (non-condensing)|
|-|
|Cooling|Convection, over temperature protected ~100°C case temperature)|
|Withstand Voltage|VAC|Input to output: 4kVAC|
|Immunity|-|EN60601-1-2|
|-|
|Safety Agency Certification|IEC/EN62368-1, IEC/EN60950-1, ANSI/AAMI ES60601-1, IEC/EN60601-1, CE Mark|
|Conducted EMI|-|EN55011, EN55032 Class B|EN55011, EN55032 Class A|[(2)]|
|Switching Frequency|kHz|132kHz|
|Weight|g|120|280|
|Size (LxWxH)|mm|64 x 46 x 24|89.0 x 63.5 x 27.6|
|-|
|Mounting & Case|PC board mountable. Plastic resin fibreglass case (UL 94V-0)|
|MTBF|hrs|200,000 to 400,000 hours, model dependent|
|Warranty|yrs|2|

**----- End of picture text -----**<br>


## **Notes:** 

(1) For medical applications an equivalent external fuse should be installed in the neutral line 

(2) Class I Applications: An external filter can be added to meet EN55011 Class B  - see application notes 

KM Series 

**1** 

|**Model Selector**|**Model Selector**||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|||**Output**|**Minimum**|**Maximum**||**Output Set**|**Line**|**Load**|**Cross**||
|**Model**||**Voltage**|**Current**|**Current)**|**Power**|**Accuracy**|**Regulation **|**Regulation (1) Regulation **||**Efficiency**|
|||**(V)**|**(A)**|**(A)**|**(W)**|**(%)**|**(%)**|**(%)**||**(%)**|
|**Single Output**|||||||||||
|KMS15-3P3|V1|3.3V|0A|3.00A|9.9W|±2%|0.5%|1%|-|74%|
|KMS40-3P3|V1|3.3V|80mA|8.00A|26.4W|±2%|0.5%|1%|-|75%|
|KMS15-5|V1|5V|0A|3.00A|15W|±2%|0.5%|1%|-|78%|
|KMS40-5|V1|5V|80mA|8.00A|40W|±2%|0.5%|1%|-|79%|
|KMS15-9|V1|9V|0A|1.67A|15W|±2%|0.5%|1%|-|79%|
|KMS40-9|V1|9V|44mA|4.44A|40W|±2%|0.5%|1%|-|82%|
|KMS15-12|V1|12V|0A|1.25A|15W|±2%|0.5%|1%|-|81%|
|KMS40-12|V1|12V|33mA|3.33A|40W|±2%|0.5%|1%|-|83%|
|KMS15-15|V1|15V|0A|1.00A|15W|±2%|0.5%|1%|-|81%|
|KMS40-15|V1|15V|26.7mA|2.67A|40W|±2%|0.5%|1%|-|83%|
|KMS15-24|V1|24V|0A|0.62A|15W|±2%|0.5%|1%|-|83%|
|KMS40-24|V1|24V|16.7mA|1.67A|40W|±2%|0.5%|1%|-|83%|
|**Dual Output**|||||||||||
|KMD15-55|V1|+5V|150mA|1.5A|15W|±2%|0.5%|1%|5%|78%|
||V2|-5V|150mA|1.5A||±2%|0.5%|1%|5%||
|KMD40-55|V1|+5V|400mA|4A|40W|±2%|0.5%|1%|5%|79%|
||V2|-5V|400mA|4A||±2%|0.5%|1%|5%||
|KMD40-512|V1|5V(2)|1250mA|5A|40W|±3%|0.5%|2%|1%|80%|
||V2|12V(2)|312mA|1.25A||±5%|5.0%|6%|7%||
|KMD40-524|V1|5V(2)|1250mA|5A|40W|±3%|0.5%|2%|1%|80%|
||V2|24V(2)|156mA|0.625A||±5%|5.0%|6%|7%||
|KMD15-1212|V1|+12V|62.5mA|0.625A|15W|±2%|0.5%|1%|3%|80%|
||V2|-12V|62.5mA|0.625A||±2%|0.5%|1%|3%||
|KMD40-1212|V1|+12V|166mA|1.66A|40W|±2%|0.5%|1%|5%|83%|
||V2|-12V|166mA|1.66A||±2%|0.5%|1%|5%||
|KMD15-1515|V1|+15V|50mA|0.5A|15W|±2%|0.5%|1%|3%|81%|
||V2|-15V|50mA|0.5A||±2%|0.5%|1%|3%||
|KMD40-1515|V1|+15V|133mA|1.33A|40W|±2%|0.5%|1%|5%|81%|
||V2|-15V|133mA|1.33A||±2%|0.5%|1%|5%||
|**Triple Output**|||||||||||
|KMT15-51212|V1|5V(3)|500mA|2A|15W|±2%|0.5%|1%|1%|78%|
||V2|+12V|50mA|0.2A||±3%|2.0%|5%|5%||
||V3|-12V|50mA|0.2A||±3%|2.0%|5%|5%||
|KMT40-51212|V1|5V(3)|1250mA|5A|40W|±3%|0.5%|3%|3%|80%|
||V2|+12V|150mA|0.6A||±5%|5.0%|7%|7%||
||V3|-12V|150mA|0.6A||±5%|5.0%|7%|7%||
|KMT15-51515|V1|5V(3)|500mA|2A|15W|±2%|0.5%|1%|1%|78%|
||V2|+15V|37.5mA|0.15A||±3%|2.0%|5%|5%||
||V3|-15V|37.5mA|0.15A||±3%|2.0%|5%|5%||
|KMT40-51515|V1|5V(3)|1250mA|5A|40W|±3%|0.5%|3%|3%|80%|
||V2|+15V|125mA|0.5A||±5%|5.0%|7%|7%||
||V3|-15V|125mA|0.5A||±5%|5.0%|7%|7%||



|**Pinout KM15**|**Pinout KM15**||||**Pinout KM40**|**Pinout KM40**||||
|---|---|---|---|---|---|---|---|---|---|
|**PIN #**|**Single O/P**|**Function**<br>**Dual O/P**|**Triple O/P**||**PIN #**|**Single O/P**|**Function**<br>**Dual O/P**<br>**5S/12&24S**||**Triple O/P**|
|1<br>2<br>3|No Pin<br>AC (L)<br>AC (N)|No Pin<br>AC (L)<br>AC (N)|No Pin<br>AC (L)<br>AC (N)||1<br>2<br>3|AC (L)<br>AC (N)<br>+DC|AC (L)<br>AC (N)<br>+DC|AC (L)<br>AC (N)<br>+O/P2|AC (L)<br>AC (N)<br>+DC|
|4<br>5<br>6|-DC<br>No Pin<br>No Pin|-DC<br>GND<br>No Pin|+5V GND<br>+5V<br>-DC||4<br>5<br>6|No Pin<br>-DC<br>No Pin|No Pin<br>GND<br>No Pin|+O/P1<br>GND1<br>GND2|+5V<br>GND<br>+5V GND|
|7<br>8|+DC<br>No Pin|+DC<br>No Pin|No Pin<br>GND||7|No Connection|-DC|No Connection|-DC|
|9|No Pin|No Pin|+DC|||||||



KM Series 

**2** 

## Outline Drawing KM15 Series 

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**----- Start of picture text -----**<br>
Viewed from<br>Top Side<br>540<br>O-<br>17.5<br>|<br>|<br>45.6 || @) + r ‘<br>Te ws 129<br>“eo 4.0<br>Tolerance ± 0.5mm<br>**----- End of picture text -----**<br>


## Derating Curves KM15 Series 

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**----- Start of picture text -----**<br>
100%<br>90%<br>80%<br>70%<br>60%<br>50% Load<br>40%<br>30%<br>20%<br>10%<br>0%<br>0 10 20 30 40 50 60 70 80<br>Ambient temperature °C<br>Load<br>**----- End of picture text -----**<br>


KM Series 

**3** 

## Outline Drawing KM40 Series 

**==> picture [257 x 207] intentionally omitted <==**

**----- Start of picture text -----**<br>
Viewed from -—__________ 89.9<br>Top Side<br>|e - 81.3 -<br>63.5 55.88 Top View<br>| | 9) 1<br>Tolerance ± 0.5mm<br>(Height Tolerance ± 1.0mm)<br>**----- End of picture text -----**<br>


**Notes:** (1) Symmetrical loading, from  minimum to maximum load     (2) Output V1 is isolated from output V2      (3) Output V1 is isolated from  outputs V2 & V3 

## Derating Curves KM40 Series 

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**----- Start of picture text -----**<br>
100%<br>90%<br>80%<br>70%<br>60%<br>50% Load<br>40%<br>30%<br>20%<br>10%<br>0%<br>0 10 20 30 40 50 60 70 80<br>Ambient temperature °C<br>Load<br>**----- End of picture text -----**<br>


KM 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 ~~a~~ https://product.tdk.com/en/power/ 

KM May23 v7 

KM 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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