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C4228 Assembly Instructions
1. Install the socket base assembly (A) on the target PCB using the Gullwing Surface Mount Soldering Instruction document.
Solder procedure #2 or #3 are recommended to induce the least amount of thermal stresses on the base adaptor
2. Place the Socket/Elastomer assembly (B) onto the socket base, aligning the orientation mark on the assembly with the A1 indicator
on the adaptor board (see page 4 for details) .
WARNING: ASSEMBLY (B) MUST BE REMOVED IF THE BASE WILL BE SUBJECT TO
REFLOW AGAIN. THE ELASTOMER WILL NOT WITHSTAND TEMPERATURES ABOVE 100
degrees C.
3. Using the 4 Hex head screws (C), attach the Socket/ Elastomer assembly onto the socket base .
4. Place BGA package (solder ball side down) into the socket. NOTE: BGA orientation into socket is critical.
5. Place the compession plate (D), on top of the BGA package, orientation is not important.
6. Install the Socket Top assembly (E) by placing it over the socket lid screws and rotating.
7. Turn the compression screw (F) clockwise, until it makes contact with the compression plate.
8. Using a torque limiting screw driver or wrench set to 3 in-lbs, tighten the compression screw.
Compression Screw
F
Socket
Top Assembly
E
Socket Lid
Compression plate
D
BGA
Package
C
Hex head screw
Socket lid screws,
DO NOT ADJUST
B
Socket / Elastomer assembly
A
Socket Base
Assembly
TARGET PCB
63/37 SnPB
Eutictic or equivalent
low temperature solder
PAGE
Tolerances: diameters ±0.03mm [±0.001”], PCB perimeters ±0.13mm [±0.005”], PCB thicknesses ±0.18mm [±0.007"], pitches (from true position) ±0.08mm
[±0.003"], all other tolerances ±0.13mm [±0.005”] unless stated otherwise. Materials and specifications are subject to change without notice.
3
____ of 5
C4228 Drawing
Status: Released
10:4
Scale: ______
Rev: B
? 2001 IRONWOOD ELECTRONICS, INC.
PO BOX 21151 ST. PAUL, MN 55121
Tele: (651) 452-8100
www.ironwoodelectronics.com
Drawing: M. Tully
File: C4228 Dwg.mcd
Date: 10/2/01
Modified: 1/29/02, MT
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