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參數(shù)資料
| 型號： | RF2705 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 887664300 |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC24 |
| 封裝： | 4 X 4 MM, PLASTIC, QFN-24 |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 379K |
| 代理商： | RF2705 |
5-135
RF2705
Rev A4 041026
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
μ
inch to 8
μ
inch Gold over 180
μ
inch 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 = 0.69 x 0.28 (mm) Typ.
B = 0.28 x 0.69 (mm) Typ.
C = 2.50 (mm) Sq.
0.50 (mm) Typ.
0.50 (mm) Typ.
2.50 (mm)
Typ.
0.57 (mm) Typ.
1.25 (mm)
Typ.
0.57 (mm) Typ.
2.50 (mm)
Typ.
1.25 (mm)
Typ.
Pin 1
Pin 12
Pin 18
Pin 24
B
B
B
B
B
B
C
A
A
A
A
A
A
A
A
A
A
A
A
B
B
B
B
B
B
Figure 1. PCB Metal Land Pattern (Top View)
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