Ground Blcocks

Ground Blocks

Ceramic Ground Blocks are customizable conductive shims ideal for application within micro-assemblies in both optical and microwave industries.

Features

  • Customizable size, thickness and metallization layers.
  • Low impedance at high frequencies.
  • Prevents creep-up of solder and epoxy.
  • Orientation recognizable at a glance.
  • Good thermal match with alumina substrates.

Uses

  • Height matching to reduce length of wire bonds.
  • Conductive shims used for creating bonding pads.

Key to Part Numbers

Our ground blocks follow a different part numbering scheme from standard square type. Each part of the PN is structured as follows.


Metal Stacks

The electrode stackup we use for Ground Blocks is as follows.

Electrode Metalization
Top Ti – Pt – Au
Bottom Ti – Pt – Au

Standard Sizes

The following table shows a list of standard sized ground blocks we try to keep in stock for generic applications or initial evaluations.

Part Number Size (mils) Size (mm)
TGB025013015 10 x 5 x 6 0.25 x 0.13 x 0.15
TGB025025015 10 x 10 x 6 0.25 x 0.25 x 0.15
TGB025013025 10 x 5 x 10 0.25 x 0.13 x 0.25
TGB025025025 10 x 10 x 10 0.25 x 0.25 x 0.25
TGB050013015 20 x 5 x 6 0.50 x 0.13 x 0.15
TGB050025015 20 x 10 x 6 0.50 x 0.25 x 0.15
TGB050050015 20 x 20 x 6 0.50 x 0.50 x 0.15
TGB050013025 20 x 5 x 10 0.50 x 0.13 x 0.25
TGB050025025 20 x 10 x 10 0.50 x 0.25 x 0.25
TGB050050025 20 x 20 x 10 0.50 x 0.50 x 0.25

Dimensions are specified as L x W x H. L x W dimensions have a tolerance of 50 um (2 mils) and H dimension has a tolerance of 25 um (1 mil).

Design Guide

Please contact us for other sizes and metallization schemes.

Note: If you have custom specifications you wish to satisfy then Tecdia can tailor the dimensions, dielectric constant, capacitance, TC and other options to match target capacitance options desired. For immediate assistance just give us a call at 408-748-0100 (USA) or contact us electronically using our contact form, tell us your requirements and we will find you the perfect part for you.

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