Enhance your electronic device's thermal management with the SAME SKY Heat Sink, designed specifically for TO-220 packages. Manufactured in Taiwan, this high-quality extruded heat sink offers reliable performance for various electronic applications.
Designed for TO-220 package with placement pins for secure PCB attachment
Includes a round hole for component attachment
Available in multiple cut lengths, customizable options available
Constructed from durable AL 6063-T5 material with black anodized finish
Steel pins with tin plating for reliable mounting
Mechanical Specifications
Model No.
Length (mm)
Weight (g)
HSE-B20254-035H
25.4
11.33
HSE-B20381-035H
38.1
16.67
HSE-B20508-035H
50.8
22.22
HSE-B20508-035H-W
50.8
22.22
HSE-B20635-035H
63.5
27.5
HSE-B20635-035H-W
63.5
27.5
Note: Mounting hole not present on 25.4 mm length model.
Thermal Performance
The heat sink's thermal resistance varies based on length, airflow, and power dissipation. For example, the HSE-B20254-035H model dissipates up to 10W with a temperature rise above ambient of approximately 112.39°C at natural convection and 24.51°C with 400 LFM airflow.
Power Dissipation (W)
ΔT (°C) - Natural Convection
ΔT (°C) - 200 LFM
ΔT (°C) - 400 LFM
1
14.40
3.28
2.49
2
28.52
6.90
5.02
3
43.03
10.51
7.48
4
56.78
13.98
9.87
5
67.70
17.81
12.71
6
77.09
21.84
14.82
7
86.63
25.55
17.33
8
95.53
29.43
19.68
9
103.32
33.25
22.19
10
112.39
37.35
24.51
For detailed performance curves, please refer to the full datasheet.
Mechanical Drawing & Material
Constructed from AL 6063-T5 with a black anodized finish. Pins are made of steel with tin plating. Dimensions are in millimeters with a tolerance of ±0.5 mm.
For more detailed specifications and customization options, please visit the product page.
Note: The datasheet was not processed; please search the internet for the part number for more details.
{"id":10024723480893,"title":"HSE-B20254-035H","handle":"hse-b20254-035h","description":"\u003ch3\u003eHeat Sink - HSE-B20254-035H\u003c\/h3\u003e\n\u003cp\u003eEnhance your electronic device's thermal management with the \u003cstrong\u003eSAME SKY\u003c\/strong\u003e Heat Sink, designed specifically for TO-220 packages. Manufactured in Taiwan, this high-quality extruded heat sink offers reliable performance for various electronic applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HSE-B20254-035H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e SAME SKY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin (COO):\u003c\/strong\u003e TW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure (UOM):\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Not specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermal Support Devices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Heat Sinks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.cuidevices.com\/product\/resource\/masterpdf\/hse-bx-02.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for TO-220 package with placement pins for secure PCB attachment\u003c\/li\u003e\n\u003cli\u003eIncludes a round hole for component attachment\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple cut lengths, customizable options available\u003c\/li\u003e\n\u003cli\u003eConstructed from durable AL 6063-T5 material with black anodized finish\u003c\/li\u003e\n\u003cli\u003eSteel pins with tin plating for reliable mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel No.\u003c\/th\u003e\n\u003cth\u003eLength (mm)\u003c\/th\u003e\n\u003cth\u003eWeight (g)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20254-035H\u003c\/td\u003e\n\u003ctd\u003e25.4\u003c\/td\u003e\n\u003ctd\u003e11.33\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20381-035H\u003c\/td\u003e\n\u003ctd\u003e38.1\u003c\/td\u003e\n\u003ctd\u003e16.67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20508-035H\u003c\/td\u003e\n\u003ctd\u003e50.8\u003c\/td\u003e\n\u003ctd\u003e22.22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20508-035H-W\u003c\/td\u003e\n\u003ctd\u003e50.8\u003c\/td\u003e\n\u003ctd\u003e22.22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20635-035H\u003c\/td\u003e\n\u003ctd\u003e63.5\u003c\/td\u003e\n\u003ctd\u003e27.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20635-035H-W\u003c\/td\u003e\n\u003ctd\u003e63.5\u003c\/td\u003e\n\u003ctd\u003e27.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eNote: Mounting hole not present on 25.4 mm length model.\u003c\/p\u003e\n\u003ch3\u003eThermal Performance\u003c\/h3\u003e\n\u003cp\u003eThe heat sink's thermal resistance varies based on length, airflow, and power dissipation. For example, the \u003cstrong\u003eHSE-B20254-035H\u003c\/strong\u003e model dissipates up to 10W with a temperature rise above ambient of approximately 112.39°C at natural convection and 24.51°C with 400 LFM airflow.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Dissipation (W)\u003c\/th\u003e\n\u003cth\u003eΔT (°C) - Natural Convection\u003c\/th\u003e\n\u003cth\u003eΔT (°C) - 200 LFM\u003c\/th\u003e\n\u003cth\u003eΔT (°C) - 400 LFM\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e14.40\u003c\/td\u003e\n\u003ctd\u003e3.28\u003c\/td\u003e\n\u003ctd\u003e2.49\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e28.52\u003c\/td\u003e\n\u003ctd\u003e6.90\u003c\/td\u003e\n\u003ctd\u003e5.02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e43.03\u003c\/td\u003e\n\u003ctd\u003e10.51\u003c\/td\u003e\n\u003ctd\u003e7.48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e56.78\u003c\/td\u003e\n\u003ctd\u003e13.98\u003c\/td\u003e\n\u003ctd\u003e9.87\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e67.70\u003c\/td\u003e\n\u003ctd\u003e17.81\u003c\/td\u003e\n\u003ctd\u003e12.71\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e77.09\u003c\/td\u003e\n\u003ctd\u003e21.84\u003c\/td\u003e\n\u003ctd\u003e14.82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e86.63\u003c\/td\u003e\n\u003ctd\u003e25.55\u003c\/td\u003e\n\u003ctd\u003e17.33\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e95.53\u003c\/td\u003e\n\u003ctd\u003e29.43\u003c\/td\u003e\n\u003ctd\u003e19.68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e103.32\u003c\/td\u003e\n\u003ctd\u003e33.25\u003c\/td\u003e\n\u003ctd\u003e22.19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e112.39\u003c\/td\u003e\n\u003ctd\u003e37.35\u003c\/td\u003e\n\u003ctd\u003e24.51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor detailed performance curves, please refer to the \u003ca href=\"https:\/\/www.cuidevices.com\/product\/resource\/masterpdf\/hse-bx-02.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003efull datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eMechanical Drawing \u0026amp; Material\u003c\/h3\u003e\n\u003cp\u003eConstructed from AL 6063-T5 with a black anodized finish. Pins are made of steel with tin plating. Dimensions are in millimeters with a tolerance of ±0.5 mm.\u003c\/p\u003e\n\u003cp\u003eFor more detailed specifications and customization options, please visit the \u003ca href=\"https:\/\/www.sameskydevices.com\/track?actionLabel=Datasheet-ClickThrough-ProductPage\u0026amp;label=HSE-BX-02.pdf\u0026amp;path=%2fproduct%2fthermal-management%2fheat-sinks%2fboard-level-heat-sinks%2fextruded-heat-sinks%2fhse-bx-02-series\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eproduct page\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-14T10:55:58+05:30","created_at":"2025-08-14T10:55:58+05:30","vendor":"Waldom Electonics","type":"Thermal Support Devices","tags":["7mm","Heat","IMPORT_CSV","SAME","Thermal","TO","WLDM"],"price":6791,"price_min":6791,"price_max":6791,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50618890518845,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HSE-B20254-035H","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"HSE-B20254-035H","public_title":null,"options":["Default Title"],"price":6791,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"HSE-B20254-035H","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/HSE-B20254-035H_52141651_885b0d3a.jpg?v=1755149162"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/HSE-B20254-035H_52141651_885b0d3a.jpg?v=1755149162","options":["Title"],"media":[{"alt":null,"id":45831694451005,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/HSE-B20254-035H_52141651_885b0d3a.jpg?v=1755149162"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/HSE-B20254-035H_52141651_885b0d3a.jpg?v=1755149162","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eHeat Sink - HSE-B20254-035H\u003c\/h3\u003e\n\u003cp\u003eEnhance your electronic device's thermal management with the \u003cstrong\u003eSAME SKY\u003c\/strong\u003e Heat Sink, designed specifically for TO-220 packages. Manufactured in Taiwan, this high-quality extruded heat sink offers reliable performance for various electronic applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HSE-B20254-035H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e SAME SKY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin (COO):\u003c\/strong\u003e TW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure (UOM):\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Not specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermal Support Devices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Heat Sinks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.cuidevices.com\/product\/resource\/masterpdf\/hse-bx-02.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for TO-220 package with placement pins for secure PCB attachment\u003c\/li\u003e\n\u003cli\u003eIncludes a round hole for component attachment\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple cut lengths, customizable options available\u003c\/li\u003e\n\u003cli\u003eConstructed from durable AL 6063-T5 material with black anodized finish\u003c\/li\u003e\n\u003cli\u003eSteel pins with tin plating for reliable mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel No.\u003c\/th\u003e\n\u003cth\u003eLength (mm)\u003c\/th\u003e\n\u003cth\u003eWeight (g)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20254-035H\u003c\/td\u003e\n\u003ctd\u003e25.4\u003c\/td\u003e\n\u003ctd\u003e11.33\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20381-035H\u003c\/td\u003e\n\u003ctd\u003e38.1\u003c\/td\u003e\n\u003ctd\u003e16.67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20508-035H\u003c\/td\u003e\n\u003ctd\u003e50.8\u003c\/td\u003e\n\u003ctd\u003e22.22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20508-035H-W\u003c\/td\u003e\n\u003ctd\u003e50.8\u003c\/td\u003e\n\u003ctd\u003e22.22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20635-035H\u003c\/td\u003e\n\u003ctd\u003e63.5\u003c\/td\u003e\n\u003ctd\u003e27.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSE-B20635-035H-W\u003c\/td\u003e\n\u003ctd\u003e63.5\u003c\/td\u003e\n\u003ctd\u003e27.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eNote: Mounting hole not present on 25.4 mm length model.\u003c\/p\u003e\n\u003ch3\u003eThermal Performance\u003c\/h3\u003e\n\u003cp\u003eThe heat sink's thermal resistance varies based on length, airflow, and power dissipation. For example, the \u003cstrong\u003eHSE-B20254-035H\u003c\/strong\u003e model dissipates up to 10W with a temperature rise above ambient of approximately 112.39°C at natural convection and 24.51°C with 400 LFM airflow.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Dissipation (W)\u003c\/th\u003e\n\u003cth\u003eΔT (°C) - Natural Convection\u003c\/th\u003e\n\u003cth\u003eΔT (°C) - 200 LFM\u003c\/th\u003e\n\u003cth\u003eΔT (°C) - 400 LFM\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e14.40\u003c\/td\u003e\n\u003ctd\u003e3.28\u003c\/td\u003e\n\u003ctd\u003e2.49\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e28.52\u003c\/td\u003e\n\u003ctd\u003e6.90\u003c\/td\u003e\n\u003ctd\u003e5.02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e43.03\u003c\/td\u003e\n\u003ctd\u003e10.51\u003c\/td\u003e\n\u003ctd\u003e7.48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e56.78\u003c\/td\u003e\n\u003ctd\u003e13.98\u003c\/td\u003e\n\u003ctd\u003e9.87\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e67.70\u003c\/td\u003e\n\u003ctd\u003e17.81\u003c\/td\u003e\n\u003ctd\u003e12.71\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e77.09\u003c\/td\u003e\n\u003ctd\u003e21.84\u003c\/td\u003e\n\u003ctd\u003e14.82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e86.63\u003c\/td\u003e\n\u003ctd\u003e25.55\u003c\/td\u003e\n\u003ctd\u003e17.33\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e95.53\u003c\/td\u003e\n\u003ctd\u003e29.43\u003c\/td\u003e\n\u003ctd\u003e19.68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e103.32\u003c\/td\u003e\n\u003ctd\u003e33.25\u003c\/td\u003e\n\u003ctd\u003e22.19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e112.39\u003c\/td\u003e\n\u003ctd\u003e37.35\u003c\/td\u003e\n\u003ctd\u003e24.51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor detailed performance curves, please refer to the \u003ca href=\"https:\/\/www.cuidevices.com\/product\/resource\/masterpdf\/hse-bx-02.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003efull datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eMechanical Drawing \u0026amp; Material\u003c\/h3\u003e\n\u003cp\u003eConstructed from AL 6063-T5 with a black anodized finish. Pins are made of steel with tin plating. Dimensions are in millimeters with a tolerance of ±0.5 mm.\u003c\/p\u003e\n\u003cp\u003eFor more detailed specifications and customization options, please visit the \u003ca href=\"https:\/\/www.sameskydevices.com\/track?actionLabel=Datasheet-ClickThrough-ProductPage\u0026amp;label=HSE-BX-02.pdf\u0026amp;path=%2fproduct%2fthermal-management%2fheat-sinks%2fboard-level-heat-sinks%2fextruded-heat-sinks%2fhse-bx-02-series\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eproduct page\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e"}
