637-20ABP The Wakefield-Vette 637-20ABP is a board-level heat sink for TO-220 packages, featuring a vertical mount, black anodized aluminum construction, and a thermal resistance of 9.2°C/W under natural convection.
Mfr Part #:

637-20ABP

Available from 1 distributors
Mfr Name: Wakefield-Vette
Wakefield-Vette
The Wakefield-Vette 637-20ABP is a board-level heat sink for TO-220 packages, featuring a vertical mount, black anodized aluminum construction, and a thermal resistance of 9.2°C/W under natural convection.
Total Stock: 100 pcs

637-20ABP Available from 1 distributor

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Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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100 pcs
100 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

637-20ABP Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Industrial Grade
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637-20ABP Description

Short technical summary and product information.

The Wakefield-Vette 637-20ABP is a board-level heat sink designed for TO-220 semiconductor packages. It features a vertical mounting orientation and a rectangular finned shape, constructed from aluminum with a black anodized finish for enhanced heat dissipation and corrosion resistance.

 

With a thermal resistance of 9.2°C/W under natural convection and 4.7°C/W at 200 LFM forced airflow, this heat sink provides effective cooling for moderate power dissipation. It is rated for 6.0W power dissipation at a 55°C temperature rise, making it suitable for a range of power management and amplification applications.

 

The heat sink measures 50.80mm in length, 34.93mm in width, and has a fin height of 12.70mm. It can be attached using both bolt-on and PC pin methods, offering flexibility in mounting to PCBs or chassis. The black anodized finish improves thermal performance and provides a professional appearance.

637-20ABP Quick Information

Product Type: Heat Sink
Series: 637
Canonical Name: Heat Sink for TO-220, Board Level, Vertical Mount, Black Anodized
Subcategory: Board Level Heat Sinks

637-20ABP Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

637-20ABP Features

  • Designed for TO-220 semiconductor packages.
  • Vertical mount with bolt-on and PC pin attachment.
  • Black anodized aluminum for efficient heat dissipation.
  • 9.2°C/W thermal resistance under natural convection.
  • Rated for 6.0W dissipation at 55°C rise.

637-20ABP Applications

  • Ideal for cooling TO-220 power transistors.
  • Used in power supply and regulation circuits.
  • Suitable for audio amplifier output stages.
  • Applicable in motor control and driver modules.

637-20ABP FAQs

6 frequently asked questions generated from this part’s specifications.
What is the thermal resistance of the 637-20ABP heat sink?

The thermal resistance is 9.2°C/W under natural convection and 4.7°C/W at 200 LFM forced airflow.

What is the maximum power dissipation of this heat sink?

It can dissipate 6.0W at a 55°C temperature rise.

What package type is this heat sink designed for?

It is designed for TO-220 packages.

What are the dimensions of the 637-20ABP heat sink?

The heat sink measures 50.80mm in length, 34.93mm in width, and has a fin height of 12.70mm.

What material and finish does this heat sink have?

It is made of aluminum with a black anodized finish.

How is the 637-20ABP heat sink attached?

It can be attached using bolt-on and PC pin methods.

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