Additional Resources: Product Page | 3D Model date 02/12/2020 page 1 of 3 MODEL: HSE-B20250-045H DESCRIPTION: HEAT SINK FEATURES * * * * TO-220 package placement pins for secure PCB mounting round hole for component attachment black anodized finish MODEL thermal resistance1 HSE-B20250-045H Note: power dissipation1 @ 75C T, nat conv (C/W) @ 1 W, nat conv (C/W) @ 1 W, 200 LFM (C/W) @ 1 W, 400 LFM (C/W) @ 75C T, nat conv (W) 9.74 12.29 4.05 2.84 7.70 1. See performance curves for full thermal resistance details. PERFORMANCE CURVES 100 Heatsink Temperature Rise Above Ambient (T = Ths - Ta) (C) Without Airflow 90 Power (W) Natural Conv. 200 LFM 400 LFM 0 0 0 0 1 12.29 4.05 2.84 2 23.82 7.75 6.41 3 34.26 11.31 9.58 4 44.14 15.68 12.55 5 53.47 19.34 16.03 6 62.05 22.49 18.96 7 70.15 26.38 21.56 8 77.35 30.60 25.15 10 9 84.60 34.29 28.46 0 10 90.94 37.71 31.61 Mounting Surface Temperature Rise Above Ambient (C) 200 LFM 400 LFM 80 70 60 50 40 30 20 0 1 Ths: "hot spot" temperature measured on the heatsink Ta: ambient temperature cuidevices.com 2 3 4 5 6 Dissipated Power (W) 7 8 9 10 Additional Resources: Product Page | 3D Model CUI Devices MODEL: HSE-B20250-045H DESCRIPTION: HEAT SINK date 02/12/2020 page 2 of 3 MECHANICAL DRAWING units: mm tolerance: 0.5 mm cuidevices.com MATERIAL AL 6063-T5 FINISH black anodized PIN MATERIAL steel PIN PLATING tin WEIGHT 19.44 g Additional Resources: Product Page CUI Devices MODEL: HSE-B20250-045H DESCRIPTION: HEAT SINK | 3D Model date 02/12/2020 page 3 of 3 REVISION HISTORY rev. description date 1.0 initial release 05/11/2017 1.01 brand update 02/12/2020 The revision history provided is for informational purposes only and is believed to be accurate. CUI Devices offers a one (1) year limited warranty. Complete warranty information is listed on our website. CUI Devices reserves the right to make changes to the product at any time without notice. Information provided by CUI Devices is believed to be accurate and reliable. However, no responsibility is assumed by CUI Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI Devices 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. cuidevices.com