Series 540
Sockets for Plastic Leaded Chip Carriers
(PLCC)
SMT terminations
Series 540 PLCC sockets
with SMT terminations
come with square sizes
for IC-packages according
to JEDEC MO-047, rec-
tangular size (32) accord-
ing to JEDEC MO-052 =
low profile
Solder tail width 0.33 mm
Guaranteed coplanarity
tolerance of SMT termina-
tions max. 0.10 mm
Plating
Stamped contacts
99
tin-lead over nickel
Please note: 99 is only plating available for
this product.
Ordering information
Please refer to table Order Codes
Standard packaging: tube
Packaging options:
Tape on reel (add suffix TR, ex 540-99-020-17-400-TR)
For PCB layout see below
No. of poles
Order Codes
Dimensions
Standard parts:
Parts with 2 positioning pegs:
A1
A2
B1
B2
C1
C2
D
E
20
540-99-020-17-400
540-99-020-17-400-2
14.86
14.86
5.08
5.08
7.26
7.26
4.60
16.00
28
540-99-028-17-400
540-99-028-17-400-2
17.40
17.40
7.62
7.62
9.80
9.80
4.60
19.70
*32*
540-99-032-17-400
540-99-032-17-400-2
16.90
19.45
7.62
10.16
9.61
12.16
3.90
22.00
44
540-99-044-17-400
540-99-044-17-400-2
22.48
22.48
12.70
12.70
14.88
14.88
4.60
27.00
52
540-99-052-17-400
540-99-052-17-400-2
25.40
25.40
15.24
15.24
17.50
17.50
4.60
30.80
68
540-99-068-17-400
540-99-068-17-400-2
30.54
30.54
20.32
20.32
22.50
22.50
4.60
37.65
84
540-99-084-17-400
540-99-084-17-400-2
35.56
35.56
25.40
25.40
27.62
27.62
4.60
45.10
* rectangular
PCB layout SMD types Series 540…
52 poles
68 poles
84 poles
20 poles
28 poles
32 poles
44 poles
