F-219 ST4-20-1.00-L-D-P-TR SS4-40-3.00-L-D-K-TR ST4-40-1.00-L-D-P-TR SS4-20-3.00-L-D-K-TR (0.40 mm) .0158" SS4, ST4 SERIES ULTRA-FINE PITCH SOCKET & HEADER SS4 Mates with: ST4 ST4 Mates with: SS4 SS4 LEAD STYLE POSITIONS PER ROW SPECIFICATIONS -3.00 For complete specifications and recommended PCB layouts see www.samtec.com?SS4 or www.samtec.com?ST4 Insulator Material: Black LCP Contact Material: Phosphor Bronze Plating: Au or Sn over 50 " (1.27 m) Ni Current Rating: 1.6 A per pin (2 pins powered) Operating Temp Range: -55 C to +125 C RoHS Compliant: Yes = 3.00 mm -10, -20, -30, -40, -50 A -K = (3.50 mm) .138" DIA Polyimide Film Pick & Place Pad B TR (Required in callout) -TR = Tape & Reel POWER/SIGNAL APPLICATION A (5.00) .197 (0.40) .01575 (0.15) .006 K (Required in callout) (3.50) -3.00 (2.85) .112 .138 (4.00) -3.50 (3.35) .132 .157 B HIGH-SPEED CHANNEL PERFORMANCE SS4/ST4 @ 4 mm Mated Stack Height Rating based on Samtec reference channel. For full SI performance data visit Samtec.com or contact SIG@samtec.com ST4 FILE NO. E111594 LEAD STYLE (4.35) .171 Lead-Free Solderable: Yes SMT Lead Coplanarity: (0.10 mm) .004" max For complete scope of recognitions see www.samtec.com/quality -L -3.50 No. of positions x (0.40) .01575 + (3.54) .139 D = 10 " (0.25 m) Gold on contact, Matte Tin on tail = 3.50 mm PROCESSING RECOGNITIONS PLATING OPTION 28 Compatible with UMPT/UMPS for flexible two-piece power/signal solutions G b p s POSITIONS PER ROW LEAD STYLE PLATING OPTION D P TR MATED HEIGHT -1.00 ST4 MATED HEIGHT SS4 = 1.00 mm -10, -20, -30, -40, -50 -1.50 = 1.50 mm -1.00 -1.50 -2.50 (4.00) .157 (4.50) .177 (5.50) .217 (4.50) .177 (5.00) .197 (6.00) .236 = Pick & Place Pad No. of positions x (0.40) .01575 + (1.58) .062 LEAD STYLE (3.70) .146 -1.00 *Processing conditions will affect mated height. -1.50 -2.50 B Note: Some lengths, styles and options are non-standard, non-returnable. -P = 2.50 mm SS4 LEAD STYLE -3.00 -3.50 (Required in callout) -2.50 MATED HEIGHT* ST4 LEAD STYLE -L = 10 " (0.25 m) Gold on contact, Matte Tin on tail (0.20) .008 (0.40) .01575 (4.00) .157 A A Due to technical progress, all designs, specifications and components are subject to change without notice. WWW.SAMTEC.COM B (1.00) (3.08) .039 .121 (1.50) (3.58) .059 .141 (2.50) (4.58) .098 .180 All parts within this catalog are built to Samtec's specifications. Customer specific requirements must be approved by Samtec and identified in a Samtec customer-specific drawing to apply. (Required in callout) -TR = Tape & Reel