F-215 (Rev 30JUN15) ST4–20–2.50–L–D–P–TR ST4–30–1.00–L–D–P–TR TM ST4–10–1.00–L–D–P–TR ST4–40–1.00–L–D–P–TR LP SYSTEM (0.40 mm) .0158" ST4 SERIES ULTRA FINE PITCH HEADER SPECIFICATIONS Super-low profile Mates with: SS4 1 mm contact wipe For complete specifications and recommended PCB layouts see www.samtec.com?ST4 Insulator Material: Black LCP Contact Material: Phosphor Bronze Plating: Au or Sn over 50µ" (1.27 µm) Ni Operating Temp Range: -55°C to +125°C Current Rating: 1.6 A per pin (1 pin powered per row) RoHS Compliant: Yes Excellent normal force Super-fine .4 mm pitch Cost-efficient Blade & Beam contact design SS4/ST4 4 mm Stack Height Narrow body design saves space on board Rated @ 3dB Insertion Loss with PCB effects* w/o PCB effects** Single-Ended Signaling 7.0 GHz / 14 Gbps 13.5 GHz / 27 Gbps Differential Pair Signaling 4.5 GHz / 9 Gbps 15.5 GHz / 31 Gbps *Performance data includes effects of a non-optimized PCB. **Test board losses de-embedded from performance data. Performance data for other stack heights and complete test data available at www.samtec.com?ST4 or contact [email protected] Processing: Lead-Free Solderable: Yes SMT Lead Coplanarity: (0.10 mm) .004" max RECOGNITIONS For complete scope of recognitions see www.samtec.com/quality ST4 POSITIONS PER ROW LEAD STYLE PLATING OPTION D P (Required in callout) –1.00 –10, –20, –30, –40, –50 = 1.00 mm –L –1.50 = 10µ" (0.25 µm) Gold on contact, Matte Tin on tail = 1.50 mm (Required in callout) –P = Pick & Place Pad –2.50 = 2.50 mm MATED HEIGHT LEAD STYLE No. of positions x (0.40) .01575 + (1.58) .062 ST4 SS4 –1.00 –1.50 MATED HEIGHT (3.70) .146 –2.50 MATED HEIGHT* ST4 LEAD STYLE –3.00 –3.50 –1.00 –1.50 –2.50 (4.00) .157 (4.50) .177 (5.50) .217 (4.50) .177 (5.00) .197 (6.00) .236 SS4 LEAD STYLE B A (0.20) .008 (0.40) .01575 TR (4.00) .157 *Processing conditions will affect mated height. Note: Some lengths, styles and options are non-standard, non-returnable. WWW.SAMTEC.COM Due to technical progress, all designs, specifications and components are subject to change without notice. A B (1.00) (3.08) .039 .121 (1.50) (3.58) .059 .141 (2.50) (4.58) .098 .180 –TR = Tape & Reel