Series 540 Sockets for Plastic Leaded Chip Carriers (PLCC) SMT terminations 96 Series 540 PLCC sockets with SMT terminations come with square sizes for IC-packages according to JEDEC MO-047, rectangular size (32) according to JEDEC MO-052 = low profile Solder tail width 0.33 mm Guaranteed coplanarity tolerance of SMT terminations max. 0.10 mm Plating Stamped contacts 99 tin-lead over nickel Ordering information Please refer to table Order Codes Standard packaging: tube Please note: 99 is only plating available for this product. No. of poles 20 28 *32* 44 52 68 84 Packaging options: Tape on reel (add suffix TR, ex 540-99-020-17-400-TR) For PCB layout see below Order Codes Dimensions Standard parts: Parts with 2 positioning pegs: A1 A2 B1 B2 C1 C2 D E 540-99-020-17-400 540-99-028-17-400 540-99-032-17-400 540-99-044-17-400 540-99-052-17-400 540-99-068-17-400 540-99-084-17-400 540-99-020-17-400-2 540-99-028-17-400-2 540-99-032-17-400-2 540-99-044-17-400-2 540-99-052-17-400-2 540-99-068-17-400-2 540-99-084-17-400-2 14.86 17.40 16.90 22.48 25.40 30.54 35.56 14.86 17.40 19.45 22.48 25.40 30.54 35.56 5.08 7.62 7.62 12.70 15.24 20.32 25.40 5.08 7.62 10.16 12.70 15.24 20.32 25.40 7.26 9.80 9.61 14.88 17.50 22.50 27.62 7.26 9.80 12.16 14.88 17.50 22.50 27.62 4.60 4.60 3.90 4.60 4.60 4.60 4.60 16.00 19.70 22.00 27.00 30.80 37.65 45.10 * rectangular PCB layout SMD types Series 540… 20 poles 52 poles 28 poles 32 poles 68 poles 44 poles 84 poles