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Q2™ Shielded Ground Plane Connectors

Samtec Q2™ Shielded Ground Plane Connectors are rugged, high-speed, 0.635mm pitch, ground plane sockets and headers with a 19Gbps to 35Gbps performance range. The board-to-board Q2™ Shielded Connectors include the QFSS and QMSS series components that are available in multiple orientations, stack heights, positions, and with power/RF end options. These connectors are also available as a differential pair and/or power combo and meet the PCI/104-Express™ standard specifications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.
Headers & Wire Housings 0.635 mm Q2 High-Speed Rugged Ground Plane Terminal Strip QMS-026-09.75-S-D-A Samtec 1: $28.11 60In Stock	Mfr. Part No. QMS-026-09.75-S-D-A Mouser Part No 200-QMS0260975SDA	Samtec	Headers & Wire Housings 0.635 mm Q2 High-Speed Rugged Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	60In Stock	$28.11 $27.43 $27.08 $25.13 View $22.33 $20.28 $19.80 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-016-06.75-L-D-DP-PC4 Samtec 1: $22.51 5In Stock	Mfr. Part No. QMSS-016-06.75-L-D-DP-PC4 Mouser Part No 200-QMSS01606.75LDDP	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	5In Stock	$22.51 $21.47 $20.32 $18.05 View $15.69 $13.36 $12.68 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-016-06.75-L-D-DP-A Samtec 1: $21.11 84In Stock	Mfr. Part No. QMSS-016-06.75-L-D-DP-A Mouser Part No 200-QMSS0160675LDDPA	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	84In Stock	$21.11 $19.19 $16.12 $14.44 View $14.43 $13.49 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-026-06.75-L-D-A-K Samtec 1: $21.92 1In Stock	Mfr. Part No. QMSS-026-06.75-L-D-A-K Mouser Part No 200-QMSS0260675LDAK	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	1In Stock	$21.92 $19.35 $16.92 $16.61 View $16.59 $16.16	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-032-06.75-L-D-DP-A Samtec 1: $27.58 63In Stock	Mfr. Part No. QMSS-032-06.75-L-D-DP-A Mouser Part No 200-QMSS0320675LDDPA	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	63In Stock	$27.58 $27.40	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-052-06.75-L-D-PC4 Samtec 1: $38.46 2In Stock	Mfr. Part No. QMSS-052-06.75-L-D-PC4 Mouser Part No 200-QMSS0520675LDPC4	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	2In Stock	$38.46 $32.79 $26.15 $24.55 View $22.20 Quote	Min.: 1 Mult.: 1
Headers & Wire Housings 0.635 mm Q2 High-Speed Rugged Ground Plane Socket Strip QFS-052-04.25-H-D-A Samtec 1: $34.92 52In Stock	Mfr. Part No. QFS-052-04.25-H-D-A Mouser Part No 200-QFS0520425HDA	Samtec	Headers & Wire Housings 0.635 mm Q2 High-Speed Rugged Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	52In Stock	$34.92 $34.45 $30.12 $27.98 View $27.96 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-026-06.75-L-D-A Samtec 1: $21.72 4In Stock	Mfr. Part No. QMSS-026-06.75-L-D-A Mouser Part No 200-QMSS02606.75LDA	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	4In Stock	$21.72 $19.14 $15.83 $14.39 View $14.38 $13.41 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-026-06.75-L-D-PC4 Samtec 1: $26.87 15In Stock	Mfr. Part No. QMSS-026-06.75-L-D-PC4 Mouser Part No 200-QMSS0260675LDPC4	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	15In Stock	$26.87 $22.96	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-026-04.25-L-D-PT4 Samtec 1: $21.65 41In Stock	Mfr. Part No. QFSS-026-04.25-L-D-PT4 Mouser Part No 200-QFSS0260425LDPT4	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	41In Stock	$21.65 $20.50 $19.24 $17.10 View $14.85 $12.63 $12.19	Min.: 1 Mult.: 1
Headers & Wire Housings 0.635 mm Q2 High-Speed Rugged Ground Plane Socket Strip QFS-078-04.25-L-D-PT4 Samtec 1: $30.93 104Expected 30/10/2026	Mfr. Part No. QFS-078-04.25-L-D-PT4 Mouser Part No 200-QFS07804.25LDPT4	Samtec	Headers & Wire Housings 0.635 mm Q2 High-Speed Rugged Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	104Expected 30/10/2026	$30.93 $28.34 $25.17 $21.88 View $18.60 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-048-04.25-L-D-DP-A Samtec 1: $36.09 6Expected 30/11/2026	Mfr. Part No. QFSS-048-04.25-L-D-DP-A Mouser Part No 200-QFSS0480425LDDPA	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	6Expected 30/11/2026	$36.09 $33.48 $32.18 $28.59 View $24.85 $23.38 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-026-04.25-L-D-A-GP-P-TR Samtec 150: $24.78 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. QFSS-026-04.25-L-D-A-GP-P-TR Mouser Part No 200-FSS0260425LDAGP	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip	Datasheet	Non-Stocked Lead-Time 9 Weeks	Reel $24.78 Quote Quote	Min.: 150 Mult.: 150 : 150
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-026-04.25-L-D-BM-GP Samtec 52: $19.00 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. QFSS-026-04.25-L-D-BM-GP Mouser Part No 200-FSS0260425LDBMGP	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip	Datasheet	Non-Stocked Lead-Time 9 Weeks	$19.00 $16.88 $14.99 $14.10 $14.09	Min.: 52 Mult.: 52
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-026-04.25-L-D-PC4-P-FR Samtec 150: $17.53 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. QFSS-026-04.25-L-D-PC4-P-FR Mouser Part No 200-FSS0260425LDPC4	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip	Datasheet	Non-Stocked Lead-Time 8 Weeks	Reel $17.53 $17.52 $17.50	Min.: 150 Mult.: 150 : 150
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-026-04.25-L-D-PC4-P Samtec 52: $22.22 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. QFSS-026-04.25-L-D-PC4-P Mouser Part No 200-FSS0260425LDPC4P	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	Non-Stocked Lead-Time 8 Weeks	$22.22 $20.40 $19.68 $19.67 Quote Quote	Min.: 52 Mult.: 52
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-032-04.25-L-D-DP-A-P Samtec 52: $26.45 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. QFSS-032-04.25-L-D-DP-A-P Mouser Part No 200-FSS0320425LDDPAP	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	Non-Stocked Lead-Time 8 Weeks	$26.45 $24.17 $23.46 $23.45 View Quote	Min.: 52 Mult.: 52
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-032-04.25-L-D-DP-A-FR Samtec 175: $20.52 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. QFSS-032-04.25-L-D-DP-A-FR Mouser Part No 200-FSS0320425LDDPAR	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip	Datasheet	Non-Stocked Lead-Time 6 Weeks	Reel $20.52 $17.98 Quote Quote	Min.: 175 Mult.: 175 : 175
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-048-04.25-L-D-DP-A-P-FR Samtec 150: $29.02 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. QFSS-048-04.25-L-D-DP-A-P-FR Mouser Part No 200-FSS0480425LDDPA	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip	Datasheet	Non-Stocked Lead-Time 8 Weeks	Reel $29.02 $28.21 Quote Quote	Min.: 150 Mult.: 150 : 150
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-048-04.25-L-D-DP-A-P Samtec 1: $44.10 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. QFSS-048-04.25-L-D-DP-A-P Mouser Part No 200-FSS0480425LDDPAP	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	Non-Stocked Lead-Time 6 Weeks	$44.10 $38.07 $36.87 $30.46 View $29.63 $28.97 Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-052-04.25-H-D-A-BM-P Samtec 52: $41.85 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. QFSS-052-04.25-H-D-A-BM-P Mouser Part No 200-FSS0520425HDABMP	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip	Datasheet	Non-Stocked Lead-Time 8 Weeks	$41.85 $39.40 $39.39 View Quote	Min.: 52 Mult.: 52
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-052-04.25-L-D-A-P-TR Samtec 150: $20.78 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. QFSS-052-04.25-L-D-A-P-TR Mouser Part No 200-FSS0520425LDAPTR	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	Non-Stocked Lead-Time 6 Weeks	Reel $20.78 $18.09 $17.24 Quote Quote	Min.: 150 Mult.: 150 : 150
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-052-04.25-L-D-PC4-P Samtec 1: $35.26 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. QFSS-052-04.25-L-D-PC4-P Mouser Part No 200-FSS0520425LDPC4P	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	Non-Stocked Lead-Time 6 Weeks	$35.26 $35.25 $33.44 $32.11 View $29.12 $28.12 $28.11	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-052-04.25-L-D-PC8-P-TR Samtec 150: $27.40 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. QFSS-052-04.25-L-D-PC8-P-TR Mouser Part No 200-FSS0520425LDPC8	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip	Datasheet	Non-Stocked Lead-Time 6 Weeks	Reel $27.40	Min.: 150 Mult.: 150 : 150
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip QFSS-064-04.25-L-D-DP-GP Samtec 26: $47.19 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. QFSS-064-04.25-L-D-DP-GP Mouser Part No 200-FSS0640425LDDPGP	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	Non-Stocked Lead-Time 2 Weeks	$47.19 $45.79 $40.70 $38.71 View Quote	Min.: 26 Mult.: 26

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