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RF2498
Rev A4 070308
PCB Design Requirements
PCB Surface Finish
The PCB surface finish used for RFMD’s qualification process is electroless nickel, immersion gold. Typical thickness is
3
μinch to 8μinch gold over 180μinch nickel.
PCB Land Pattern Recommendation
PCB land patterns are based on IPC-SM-782 standards when possible. The pad pattern shown has been developed and
tested for optimized assembly at RFMD; however, it may require some modifications to address company specific
assembly processes. The PCB land pattern has been developed to accommodate lead and package tolerances.
PCB Metal Land Pattern
A
A
A
A
A
A
A
A
B
B
B
B
B
B
B
B
C
A
A
A
A
A
A
A
A
B
B
B
B
B
B
B
B
3.50 Typ.
0.50 Typ.
0.50 Typ.
0.55 Typ.
0.55 Typ.
1.75 Typ.
1.75 Typ.
3.50 Typ.
A = 0.64 x 0.28 (mm) Typ.
B = 0.28 x 0.64 (mm) Typ.
C = 3.50 (mm) Sq.
Pin 1
Pin 32
Pin 24
Pin 16
Dimensions in mm.
Figure 1. PCB Metal Land Pattern (Top View)
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