grounds to shield signal pairs differential routing increased insertion depth for rugged applications optional power pins qmss?048?06.75?l?d?dp?pc4 integral metal plane for power or ground qmss?026?06.75?l?d?a qmss?052?06.75?l?d?a www.samtec.com application 0,635 mm shielded header qfss qmss (11,00) .433 for complete speci cations and recommended pcb layouts see www.samtec.com?qmss insulator material: liquid crystal polymer terminal, ground plane & shield material: phosphor bronze plating: au over 50? (1,27?) ni (tin on ground plane tail) current rating: signal contact: 1.8a @ 80? power contact: 3.95a @ 80? ground plane: 8.9a @ 80? voltage rating: 300 vac mated with qfss operating temp: -55? to +125? rohs compliant: ye s processing: max processing temp: 230? for 60 seconds, or 260? for 20 seconds 3x lead?free solderable: ye s smt lead coplanarity: (0,10mm) .004" max (026-078) (0,15mm) .006" max (104) board stacking: for applications requiring more than two connectors per board or 4 banks or more, contact ipg@samtec.com qmss series f-209-1 note: some lengths, styles and options are non-standard, non-returnable. application specific option ?headers without alignment pins ?8 power pins/end ?4 or 8 power pins/end for (2,36mm) 0.93" thick board ?guide post ?edge mount ?hot pluggable call samtec. tm applications see so series for precision machined standoffs. qmss pins per row no. of pairs plating option ?026, ?052, ?078, ?104 (52 total pins per bank 40 signals + 12 grounds to shield = ?d) ?016, ?032, ?048, ?064 (16 pairs per bank = ?d?dp) ?l = 10" (0,25m) gold on signal pins, shield and ground plane (gold ? ash on signal pin tails, tin on ground plane tails) ?d = single-ended ?d?dp = differential pair type a other option ?k = (5,50mm) .217" dia polyimide ? lm pick & place pad (n/a with ?pc4) ?pc4 = 4 power pins/end (n/a with ?104 or ?a) 06.75 (6,35) .250 (6,35) .250 (7,52) .296 (0,25) .010 (2,31) .091 (3,18) .125 (6,73) .265 01 01 02 (0,23) .009 01 02 (7,26) .286 no. of banks x (21,34) .840 - (0,51) .020 (0,635) .025 (21,35) .840 (2,29) .090 no. of banks x (21,34) .840 + (13,21) .520 (2,00) .07874 (2,54) .100 (2,54) .100 ?pc4 board mates: qfss cable mates: 6qdps specifications 11mm stack height single-ended signaling 2.3 ghz / 4.6 gbps differential pair signaling 1.4 ghz / 2.8 gbps based on 10% impedance/crosstalk see so se rie sf or pre cis ion
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