pga / bga / plcc sockets series 540 540-88-028-24-008 plcc socket for plastic leaded chip carrier (plcc), solder tail plcc sockets, solder tail, with precision stamped contacts providing component retention thanks to positive spring action. technical specs.: insulator glass filled thermoplastic pps-gf40-fr flammability ul 94v-o contact phosphor bronze mechanical life min. 25 cycles rated current 1 a contact resistance max. 30 m dielectric strength min. 500 v rms insulation resistance min. 1000 m capacitance max. 1 pf ordering information: ?pp plating code ?sleeve clip? ?88 ?tin tin advanced information: order codes no of poles a1/a2 b1/b2 c1/c2 d e 540-88-028-24-008 28 18.09 7.62 11.2 22.12 540-88-032-24-008 32 18.04/2 0.06 7.62/10. 16 11.2/13. 6 23.12 preci-dip sa rue saint-henri 11 p.p.box 834 ch-2800 delmont / switzerland phone +41 (0)32 421 04 00 fax +41 (0)32 421 04 01 e-mail sales@precidip.com www.precidip.com
540-88-044-24-008 44 23.1 12.7 16.2 29.12 540-88-052-24-008 52 25.7 15.24 18.8 32.85 540-88-068-24-008 68 30.8 20.32 23.7 39.9 540-88-084-24-008 84 35.95 25.4 28.9 47.4 preci-dip sa rue saint-henri 11 p.p.box 834 ch-2800 delmont / switzerland phone +41 (0)32 421 04 00 fax +41 (0)32 421 04 01 e-mail sales@precidip.com www.precidip.com
technical assistance general specifications: the values listed below are general specs applying for preci-dip pga, bga and plcc sockets. please see individual catalog page for additional and product specific technical data. operating temperature range -55 ... +125 c climatic category (iec) 55/125/21 operating humidity range annual mean 75 % max working voltage 100 vrms/150 vdc (2.54 mm grid) preci-dip sockets are recognized by underwriters laboratories inc. and listed under "connectors for use in data, signal, control and power applications", file nr. e174442 mechanical characteristics: clip retention min. 40 n (no displacement under axial force applied) contact (sleeve / clip) retention min. 3.3 n acc. to mil-dtl-83734, pt 4.6.4.2 electrical characteristics: insulation resistance between any two adjacent contacts min. 10'000 m at 500 v ac capacitance between any two adjacent contacts max. 1 pf (plcc max. 2 pf) self inductance per contact max. 2 nh environmental characteristics: the sockets withstand the following environmental tests without mechanical and electrical defects: - dry heat steady state iec 60512-11-9.11i / 60068-2-2.bb: 125 c, 16h - damp heat cyclic iec 60512-11-12.11m / 60068-2-30.db: 25/55 c, 90 ? 100 %rh, 1 cycle of 24 h - cold steady state iec 60512-11-10.11j / 60068-2-1.a: -55 c, 2 h - thermal shock iec 60512-11-4.11d / 60068-2-14.na: -55/125 c, 5 cycles 30 min - sinusoidal vibrations iec 60512-6-4.6d / 60068-2-6.fc: 10 to 500 hz, 10 g, 1 octave/min, 10 cycles for each axis - shock iec 60512-6-3.6c / 60068-2-27.ea: 50 g, 11 ms, 3 shocks in three axis during the above two tests no contact interruption >50 ns does appear. - solderability j-std-002a, test a, 245c, 5 s solder alloy snag3.8cu0.7 - resistance to soldering heat j-std-0020c, 260c, 20 s - moisture sensitivity j-std-020c level 1 - resistance to corrosion : 1) salt spray test iec 60068-2-11.ka: 48 h 2) sulfur dioxide (so2) test iec 60068-2-42 kc: 96 h at 25 ppm so2, 25 c, 75 %rh 3) hydrogen sulfide (h2s) test iec 60068-2-43 kd: 96 h at 12 ppm h2s, 25 c, 75 %rh solderless compliant press-fit characteristics: press-fit characteristics measured acc. to iec 60352-5 - press-in force: 90 n max. (at min. hole dia.) / 65 n typ. - push-out force: 30 n min. (at max. hole dia.) / 50 n typ. - push-out 3rd cycle: 20 n min. (at max. hole dia.) pcb hole dimensions - 2.54 mm grid: finished hole ?: 1 + 0.09/-0.06 mm | drilled hole ?: 1.15 0.02 mm preci-dip sa rue saint-henri 11 p.p.box 834 ch-2800 delmont / switzerland phone +41 (0)32 421 04 00 fax +41 (0)32 421 04 01 e-mail sales@precidip.com www.precidip.com
- interstitial grid: finished hole ?: 0.7 + 0.09/-0.06 mm | drilled hole ?: 0.8 0.02 mm pcb hole plating - pcb surface finish: hole plating - tin: 5-15 m tin over min. 25 m copper - copper: min. 25 m copper - gold over nickel: 0.05-0.2 m gold over 2.5-5 m nickel over min. 25 m copper preci-dip sa rue saint-henri 11 p.p.box 834 ch-2800 delmont / switzerland phone +41 (0)32 421 04 00 fax +41 (0)32 421 04 01 e-mail sales@precidip.com www.precidip.com
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