SF-QFN28B-L-02 Datasheet, PDF (1/1 Pages) Ironwood Electronics. – Materials and specifications are subject to change without notice

5.52mm
[0.217"]
5.52mm [0.217"]
27 25 24 22
1 28 26 23 21 20
3 2 GND
19 18
45
16 17
6 7 9 12 14 15
8 10 11 13
3
6.00mm
[0.236"]
4.75mm
[0.187"]
6.00mm [0.236"]
4.75mm [0.187"]
28
1
4.11mm
[0.162"]
0.80mm [0.032"]
Top View
4.11mm [0.162"]
Bottom View
2
3.02mm
[0.119"]
1
0.30mm [0.012"] typ.
0.65mm [0.026"] typ.
Front View
RoHS COMPLIANT
Substrate: 0.635mm ±0.18mm [0.025" ±0.007"]
1 _{per IPC 4101/21, Gold surface finish.}
Substrate: 1.59mm ±0.18mm [0.062" ±0.007"]
2 ^{FR4/G10 or equivalent high temp material.}
Non-clad.
Pins: shell material- Brass Alloy 360 1/2 hard;
3 ^{finish- 0.25µm [10µ"] Au over 1.27µm [50µ"] Ni}
(min.). Contact material- BeCu; finish 0.25µm
[10µ"] Au over 2.54µm [100µ"] Ni (min. ).
Description: 28 position MLF surface mount foot
28 position (+1 Gnd index pin). 1.0mm pitch UGA female receptacles (top) to 28 position, 0.8mm MLF pattern
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.
SF-QFN28B-L-02 Drawing
© 2005 IRONWOOD ELECTRONICS, INC.
11351 Rupp Drive, Suite 400, Burnsville, MN 55337
Tele: [phone]
www.ironwoodelectronics.com
Status: Released
Drawing: H. Hansen
File: SF-QFN28B-L-02 Dwg
Scale: 8:1
Rev: A
Date: 12/9/05
Modified: