HSB25-282810

CUI Devices is now Same Sky! Learn More 

**date** 02/24/2026 **page** 1 of 3 

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

## **MODEL:** HSB25-282810 | **DESCRIPTION:** HEAT SINK 

## **FEATURES** 

- BGA design 

- small footprint 

- top mount 

- aluminum alloy 

## **MODEL** 

HSB25-282810 

||**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)|
|16.99|20.2|6.1|3.8|4.41|



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

## **PERFORMANCE CURVES** 

|~~tT~~<br>~~ee~~|Heatsink Temperature Rise Above<br>Ambient (ΔT = Ths - Ta) (°C)<br>~~tTyy~~<br>|Heatsink Temperature Rise Above<br>Ambient (ΔT = Ths - Ta) (°C)<br>~~tTyy~~<br>|Heatsink Temperature Rise Above<br>Ambient (ΔT = Ths - Ta) (°C)<br>~~tTyy~~<br>|
|---|---|---|---|
|Power<br>(W)<br>~~tT~~<br>~~ee~~<br>~~ee~~|Natural<br>Conv.<br>~~tTyy~~<br>~~ee~~|200 LFM<br>~~yy~~<br>~~ee~~|400 LFM|
|0<br>~~tT~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|0<br>~~tT yy~~<br>~~ee~~<br>~~ee~~|0<br>~~yy~~<br>~~ee~~<br>~~ee~~|0<br>~~ee~~|
|1<br><br>~~ee ~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|20.2<br> ~~yy~~<br> ~~ee~~<br>~~ee~~|6.1<br>~~yy~~<br>~~ee~~<br>~~ee~~|3.8<br>~~ee~~|
|2<br> <br>~~ee~~<br>~~ee~~<br>~~ee~~|37.2<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|11.9<br> ~~ee~~<br>~~ee~~<br>~~ee~~|7.3<br>~~ee~~|
|3<br>~~ee~~<br>~~ee~~<br>~~||}~~|52.9<br>~~ee~~<br>~~ee~~<br>~~||}~~|17.9<br>~~ee~~<br>~~ee~~<br>~~||}~~|11.2<br>~~ee~~<br>~~||} —~~|
|4<br>~~ee~~<br>~~||}~~|68.6<br>~~ee ~~<br>~~||}~~|24.5<br> ~~ee~~<br>~~||}~~|15.1<br>~~||} —~~|
|5<br>~~||}~~<br>~~ee~~|84.3<br>~~||}~~<br>~~ee~~|30.4<br>~~||}~~|18.9<br>~~||} —~~|
|6<br>~~||}~~<br>~~ee~~<br>~~ee~~|98.5<br>~~||}~~<br>~~ee~~<br>~~ee~~|36.9<br>~~||}~~<br>~~ee~~|22.6<br>~~||} —~~|
|7<br>~~ee ~~<br>~~ee~~<br>~~ee~~|112.1<br> ~~ee~~<br>~~ee~~<br>~~ee~~|42.8<br>~~ee~~<br>~~ee~~|26.3|
|8<br>~~ee~~<br>~~ee~~<br>~~ee~~|124.4<br>~~ee~~<br>~~ee~~<br>~~ee~~|49.5<br>~~ee~~<br>~~ee~~<br>~~ee~~|30.1|
|9<br>~~ee~~<br>~~ee~~<br>~~es~~|137.3<br>~~ee~~<br>~~ee~~<br>~~ee~~|55.4<br>~~ee~~<br>~~ee~~<br>~~es~~|33.8|
|10<br>~~ee~~<br>~~es~~|149.3<br>~~ee~~<br>~~ee~~|61.4<br>~~ee~~<br>~~es~~|37.6|



**==> picture [329 x 154] intentionally omitted <==**

**----- Start of picture text -----**<br>
160<br>140 Without Airflow<br>120 200 LFM<br>ee<br>100 400 LFM<br>fF eRe<br>80 e eL<br>60 eee ee eee<br>40 |reof | |]eee eee| |<br>20<br>0 Se a<br>l=) FF [| | | | | |<br>0 1 2 3 4 5 6 7 8 9 10<br>Heat Dissipated (W)<br>Rise Above  Ambient (°C)<br>Mounting Surface Temperature<br>**----- End of picture text -----**<br>


Ths: “hot spot” temperature measured on the heatsink 

Ta: ambient temperature 

**sameskydevices.com** 

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

**SAME SKY** | **MODEL:** HSB25-282810 | **DESCRIPTION:** HEAT SINK 

**date** 02/24/2026 | **page** 2 of 3 

## **MECHANICAL DRAWING** 

units: mm tolerance: X.X ±0.10 mm X.XX ±0.05 mm 

**==> picture [314 x 310] intentionally omitted <==**

|MATERIAL|AL 6063-T5|
|---|---|
|FINISH|black anodized|
|PUSH PIN|PA66|
|SPRING|spring steel, nickel plated|
|WEIGHT|13.9 g|



**==> picture [220 x 190] intentionally omitted <==**

**==> picture [148 x 26] intentionally omitted <==**

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


**sameskydevices.com** 

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

**SAME SKY** | **MODEL:** HSB25-282810 | **DESCRIPTION:** HEAT SINK 

**date** 02/24/2026 | **page** 3 of 3 

## **REVISION HISTORY** 

|**rev.**|**description**|**date**|
|---|---|---|
|1.0|initial release|04/15/2022|
|1.01|logo, datasheet style update|08/05/2022|
|1.02|CUI Devices rebranded to Same Sky|09/12/2024|
|1.03|added recommended PCB layout|03/18/2025|
|1.04|factory location change|02/24/2026|



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**