PE4257
Product Specification
Figure 10. Package Drawing
20-Lead 4x4 QFN
4.00
INDEX AREA
2.00 X 2.00
-B-
2.00
2.00
0.25 C
-A-
0.10 C
0.08 C
0.020
0.20 REF
EXPOSED PAD &
TERMINAL PADS
0.435
0.18
SEATING
PLANE
0.80
4.00
-C-
2.00
TYP
0.50
TYP
0.55
2.00
1.00
5
11
0.435
0.18
4.00
1. DIMENSION APPLIES TO METALLIZED TERMINAL AND IS MEASURED
BETWEEN 0.25 AND 0.30 FROM TERMINAL TIP.
2. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL
AS THE TERMINALS.
DETAIL A
1
20
16
15
EXPOSED PAD
0.23
2.00
DETAIL A
1.00
6
10
2
1
0.10
C A B
Table 6. Ordering Information
Order Code
4257-01
4257-02
4257-00
4257-51
4257-52
Part Marking
4257
4257
PE4257-EK
4257
4257
Description
PE4257-20QFN 4x4mm-75A
PE4257-20QFN 4x4mm-3000C
PE4257-20QFN 4x4mm-EK
PE4257G-20QFN 4x4mm-75A
PE4257G-20QFN 4x4mm-3000C
Package
20-lead 4x4mm QFN
20-lead 4x4mm QFN
Evaluation Kit
Green 20-lead 4x4mm QFN
Green 20-lead 4x4mm QFN
Shipping Method
75 units / Tube
3000 units / T&R
1 / Box
75 units / Tube
3000 units / T&R
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 6 of 7
Document No. 70-0166-02
│
UltraCMOS™ RFIC Solutions
PEREGRINE [ PEREGRINE SEMICONDUCTOR CORP. ]
