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4672 Mica insulator pad for TO-220 case. Rectangular die-cut sheet 21.84mm x 13.21mm, 0.076mm thick. Rated to 593°C with thermal conductivity 0.009 W/(in·°C).
Mfr Part #:

4672

Available from 1 distributors
Mfr Name: Keystone Electronics
Keystone Electronics
Mica insulator pad for TO-220 case. Rectangular die-cut sheet 21.84mm x 13.21mm, 0.076mm thick. Rated to 593°C with thermal conductivity 0.009 W/(in·°C).
✓ Total Stock: 3,963 pcs

4672 Available from 1 distributor

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Braun Electronic Components ✓
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3,963 pcs
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3963 pcs On Request 1 On Request On Request On Request On Request On Request
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4672 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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4672 Description

Short technical summary and product information.

The Keystone 4672 is a precision stamped mica insulator pad designed for TO-220 transistor packages. It provides electrical isolation and thermal transfer between the semiconductor and chassis or heatsink.

 

The rectangular die-cut pad measures 21.84mm x 13.21mm with a thickness of 0.076mm (0.0030"). Mica construction offers good thermal conductivity of 0.009 W/(in·°C) and can withstand continuous operating temperatures up to 593°C (1100°F). The dielectric constant is 7 at 1 MHz.

 

This insulator is suitable for high-temperature power applications where reliable electrical isolation and heat dissipation are required. The thin profile minimizes thermal resistance while maintaining high dielectric strength.

4672 Quick Information

Product Type: Thermal Pad / Insulator
Canonical Name: TO-220 Mica Insulator Die-Cut Pad 21.84mm x 13.21mm
Subcategory: Thermal Pads

4672 Compliance

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

4672 Features

  • Mica construction for high temperature operation.
  • TO-220 case size die-cut pad.
  • 0.076mm thickness for low thermal resistance.
  • Rated to 593°C maximum operating temperature.
  • RoHS3 compliant per datasheet declaration.

4672 Applications

  • Thermal isolation for TO-220 power transistors.
  • Mounting semiconductors to chassis or heatsink.
  • High temperature power supply assemblies.
  • Industrial motor drive and inverter modules.

4672 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum operating temperature of the 4672 insulator?

593°C (1100°F).

What is the thermal conductivity of this mica pad?

0.009 W/(in·°C).

Is the Keystone 4672 RoHS compliant?

Yes, the datasheet declares RoHS COMPLIANT (RoHS3).

What are the dimensions of this insulator?

21.84mm x 13.21mm rectangular, 0.076mm (0.0030") thick.

Which package type is this pad designed for?

TO-220.

What is the dielectric constant?

7 at 1 MHz.

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