4003G Beryllium Oxide Ceramic insulator for TO-3 packages. White rhombus shape measuring 39.65mm x 26.67mm with 1.575mm thickness.
Mfr Part #:

4003G

Available from 1 distributors
Mfr Name: Aavid, Thermal Division of Boyd Corporation
Aavid, Thermal Division of Boyd Corporation
Beryllium Oxide Ceramic insulator for TO-3 packages. White rhombus shape measuring 39.65mm x 26.67mm with 1.575mm thickness.
Total Stock: 15 pcs
$ Price Range: $30.61 - $41.47

4003G Available from 1 distributor

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15 pcs
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4003G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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4003G Description

Short technical summary and product information.

The 4003G is a thermal insulator pad designed for TO-3 semiconductor packages. It is made from Beryllium Oxide Ceramic, offering high thermal conductivity and electrical insulation. The pad has a white rhombus shape with dimensions of 39.65mm x 26.67mm and a thickness of 1.575mm (0.0620 inches). This insulator is suitable for mounting TO-3 transistors or other components requiring electrical isolation while maintaining thermal transfer. The material provides good mechanical strength and thermal performance. The part is RoHS3 compliant and has an MSL rating of 1 (unlimited). It is commonly used in power supply and amplifier applications where TO-3 packages are employed.

4003G Quick Information

Product Type: Thermal Pad / Insulator
Canonical Name: Beryllium Oxide Ceramic Insulator, TO-3, 39.65mm x 26.67mm, White
Subcategory: Thermal Pads

4003G Compliance

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

4003G Estimated Pricing

Qty Low High
1+ $41.47 $41.47
10+ $36.67 $36.67
20+ $34.92 $34.92
50+ $33.65 $33.65
100+ $32.46 $32.46
200+ $30.61 $30.61

Estimated market price range - modelled values for guidance only, not live distributor offers.

4003G Features

  • Beryllium Oxide Ceramic construction for thermal management.
  • Designed for TO-3 semiconductor packages.
  • White rhombus shape with 39.65x26.67mm outline.
  • 1.575mm thickness for effective insulation.
  • RoHS3 compliant and MSL 1 rated.

4003G Applications

  • Used in power supply thermal management.
  • Ideal for TO-3 transistor isolation.
  • Suitable for amplifier output stage insulation.
  • Applied in industrial power electronics.

4003G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the thickness of the 4003G insulator?

1.575mm (0.0620 inches).

What are the dimensions of the 4003G?

39.65mm x 26.67mm.

What material is the 4003G made of?

Beryllium Oxide Ceramic.

What shape is the 4003G?

Rhombus.

What package is the 4003G designed for?

TO-3.

Is the 4003G RoHS compliant?

RoHS3 Compliant (unverified).

What is the moisture sensitivity level (MSL) of the 4003G?

MSL 1 (Unlimited) (unverified).

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