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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Terminal Strip QMSS-016-06.75-L-D-DP-PC4 Samtec 1: $16.55 2In 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	2In Stock	$16.55 $15.79 $14.94 $13.27 View $11.54 $9.82 $9.32 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: $15.52 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	$15.52 $14.11 $11.85 $10.62 View $10.61 $9.92 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: $16.12 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	$16.12 $14.23 $12.44 $12.21 View $12.20 $11.88	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: $19.76 15In Stock 56Expected 08/02/2027	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 56Expected 08/02/2027	$19.76 $16.88 $14.76 $14.23 View $14.22 Quote	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: $20.15 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	$20.15 $16.08 $15.09 $14.89 Quote Quote	Min.: 1 Mult.: 1
Board to Board & Mezzanine Connectors 0.635MM Q2 HS SHIELDED GP HDR QMSS-052-06.75-L-D-A Samtec 1: $21.46 70In Stock	Mfr. Part No. QMSS-052-06.75-L-D-A Mouser Part No 200-QMSS05206.75LDA	Samtec	Board to Board & Mezzanine Connectors 0.635MM Q2 HS SHIELDED GP HDR Learn More about Samtec q2 shielded b2b connectors	Datasheet	70In Stock	$21.46 $20.09 $16.31 $15.83 View $15.36 Quote	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: $27.59 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	$27.59 $24.11 $19.23 $18.05 View $16.33 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: $25.68 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	$25.68 $25.33 $22.15 $20.57 View $20.56 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: $15.97 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	$15.97 $14.07 $11.64 $10.58 View $10.57 $9.86 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-PT4 Samtec 1: $15.92 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	$15.92 $15.07 $14.15 $12.57 View $10.92 $9.29 $8.96	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: $22.74 104Expected 23/11/2026	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 23/11/2026	$22.74 $20.84 $18.51 $16.09 View $13.68 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 Samtec 1: $15.34 104Expected 14/12/2026	Mfr. Part No. QFSS-026-04.25-L-D-A Mouser Part No 200-QFSS02604.25LDA	Samtec	Board to Board & Mezzanine Connectors 0.635 mm Q2 Shielded Ground Plane Socket Strip Learn More about Samtec q2 shielded b2b connectors	Datasheet	104Expected 14/12/2026	$15.34 $13.36 $10.66 $10.01 View $9.05 $8.57 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: $26.54 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	$26.54 $24.62 $23.66 $21.02 View $18.27 $17.19 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: $18.22 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 $18.22 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: $13.97 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	$13.97 $12.41 $11.02 $10.37 $10.36	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: $12.89 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 $12.89 $12.88 $12.87	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: $16.34 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	$16.34 $15.00 $14.47 $14.46 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: $19.45 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	$19.45 $17.77 $17.25 $17.24 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: $15.09 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 $15.09 $13.22 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: $21.34 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 $21.34 $20.74 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: $32.43 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	$32.43 $27.99 $27.11 $22.40 View $21.79 $21.30 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: $30.77 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	$30.77 $28.97 $28.96 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: $15.28 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 $15.28 $13.30 $12.68 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: $25.93 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	$25.93 $25.92 $24.59 $23.61 View $21.41 $20.68 $20.67	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: $20.15 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 $20.15	Min.: 150 Mult.: 150 : 150

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Q2™ Shielded Ground Plane Connectors

Types of Connectors