HSE18-252513P

CUI Devices is now Same Sky! Learn More 

**date** 11/17/2025 **page** 1 of 3 

Additional Resources:   Product Page    |    3D Model |    PCB Footprint 

## **MODEL:** HSE18-252513P | **DESCRIPTION:** HEAT SINK 

## **FEATURES** 

- TO-220 package 

- bolt on attachment 

- pins for secure PCB attachment 

- aluminum alloy 

## **MODEL** 

HSE18-252513P 

||**thermal resistance**|**thermal resistance1**||**power**<br>**dissipation1**|
|---|---|---|---|---|
|**@ 75**°**C**Δ**T, nat**|**@ 1 W,**|**@ 1 W,**|**@ 1 W,**|**@ 75°C**Δ**T, nat**|
|**conv**(°C/W)|**nat conv**|**200 LFM**|**400 LFM**|**conv**|
||(°C/W)|(°C/W)|(°C/W)|(W)|
|16.83|21.9|7.2|4.2|4.46|



Note: 1.  See performance curves for full thermal resistance details. 

## **PERFORMANCE CURVES** 

|~~**f**~~<br>~~F~~|Heatsink Temperature Rise Above<br>Ambient (ΔT = Ths - Ta) (°C)<br>~~**f**f~~<br>~~F|~~|Heatsink Temperature Rise Above<br>Ambient (ΔT = Ths - Ta) (°C)<br>~~**f**f~~<br>~~F|~~|Heatsink Temperature Rise Above<br>Ambient (ΔT = Ths - Ta) (°C)<br>~~**f**f~~<br>~~F|~~|
|---|---|---|---|
|Power<br>(W)<br>~~**f**~~<br>~~F~~<br>~~SE~~<br>~~es~~|Natural<br>Conv.<br>~~**f**f~~<br>~~F|~~<br>~~EEL~~|200 LFM<br>~~f~~<br>~~|~~<br>~~EEL Ee~~|400 LFM<br>~~f~~<br>~~|~~<br>~~Ee~~|
|0<br>~~**f**~~<br>~~F~~<br>~~SE~~<br>~~es~~|0<br>~~**f**f~~<br>~~F |~~<br>~~EEL~~|0<br>~~f~~<br>~~|~~<br>~~EEL Ee~~|0<br>~~f~~<br>~~|~~<br>~~Ee~~|
|1<br>~~SE~~<br>~~es~~<br>~~es~~|21.9<br>~~EEL~~<br>~~es~~<br>|7.2<br>~~EEL Ee~~|4.2<br>~~Ee~~|
|2<br>~~SE ~~<br>~~es~~<br>~~es~~<br>~~+}~~|37.6<br> ~~EEL~~<br>~~es~~<br>~~es~~<br>~~+}~~|14.0<br>~~EEL Ee~~<br>|8.2<br>~~Ee~~<br>|
|3<br>~~es~~<br>~~es~~<br>~~+}~~|52.1<br>~~es~~<br>~~es~~<br>~~+}~~|20.7<br>|12.2<br>|
|4<br>~~es ~~<br>~~+}~~|67.9<br> ~~es~~<br>~~+}+}~~|28.1<br>~~+}~~|16.5<br>~~+}~~|
|5<br> <br>~~+}~~<br>~~es~~<br>~~SS~~|83.6<br> ~~es~~<br>~~+} +}~~<br>~~ee~~|35.4<br>~~+}~~|20.7<br>~~+}~~|
|6<br> <br>~~+}~~<br>~~es~~<br>~~SS~~<br>~~es~~|97.5<br> ~~es~~<br>~~+} ~~<br>~~ee~~<br>|43.0<br>|25.1<br>|
|7<br>~~es ~~<br>~~SS~~<br>~~es~~|111.0<br> ~~ee~~<br>|50.6|29.1|
|8<br> <br>~~SS~~<br>~~es~~<br>~~es~~|123.7<br> ~~ee~~<br>~~**e**e~~|57.6|33.3|
|9<br> <br>~~SS~~<br>~~es~~<br>~~es~~|135.8<br> ~~ee~~<br>~~**e**e~~<br>~~s~~|64.9|37.5|
|10<br>~~es ~~<br>~~es~~|147.3<br> ~~**e**e~~<br>~~s~~|71.9|41.7|



Ths: “hot spot” temperature measured on the heatsink 

**==> picture [323 x 200] intentionally omitted <==**

**----- Start of picture text -----**<br>
160<br>Without Airflow<br>140<br>200 LFM<br>120 400 LFM AT<br>f= : CeaPe<br>100<br>P eLA<br>80<br>LLLLLEeT T T  TT<br>60 LLL EEE<br>40 T LLLL erLLLeee<br>20 Tet ee<br>0 ALES<br>et er<br>0 2 4 6 8 10<br>LLEEL<br>Heat Dissipated (W)<br>Rise Above  Ambient (°C)<br>Mounting Surface Temperature<br>**----- End of picture text -----**<br>


Ta: ambient temperature 

**sameskydevices.com** 

Additional Resources:   Product Page    |    3D Model |    PCB Footprint 

**SAME SKY** | **MODEL:** HSE18-252513P | **DESCRIPTION:** HEAT SINK 

**date** 11/17/2025 | **page** 2 of 3 

## **MECHANICAL DRAWING** 

units: mm tolerance: ±0.50 mm 

**==> picture [60 x 40] intentionally omitted <==**

|MATERIAL|AL 6063-T5|
|---|---|
|FINISH|black anodized|
|PIN MATERIAL|steel|
|PIN PLATING|2~3µm tin|
|WEIGHT|16.1 g|



**==> picture [147 x 26] intentionally omitted <==**

**----- Start of picture text -----**<br>
Recommended PCB Layout<br>Top View<br>**----- End of picture text -----**<br>


**==> picture [106 x 11] intentionally omitted <==**

**----- Start of picture text -----**<br>
PIN：TIN PLATED<br>**----- End of picture text -----**<br>


**sameskydevices.com** 

Additional Resources:   Product Page    |    3D Model |    PCB Footprint 

**SAME SKY** | **MODEL:** HSE18-252513P | **DESCRIPTION:** HEAT SINK 

**date** 11/17/2025 | **page** 3 of 3 

## **REVISION HISTORY** 

|**rev.**|**description**|**date**|
|---|---|---|
|1.0|initial release|03/03/2025|
|1.01|added recommended PCB layout|11/17/2025|



The revision history provided is for informational purposes only and is believed to be accurate. 

Same Sky offers a one (1) year limited warranty.  Complete warranty information is listed on our website. 

Same Sky reserves the right to make changes to the product at any time without notice.  Information provided by Same Sky is believed to be accurate and reliable.  However, no responsibility is assumed by Same Sky for its use, nor for any infringements of patents or other rights of third parties which may result from its use. 

Same Sky products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability.  A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 

**sameskydevices.com**