F-219
QFSS–078–04.25–L–D–A
QFSS–052–04.25–L–D–PC4
(0.635 mm) .025"
QFSS–026–04.25–L–D–A
QFSS SERIES
SHIELDED GROUND PLANE SOCKET
SPECIFICATIONS
For complete specifications and
recommended PCB layouts see
www.samtec.com?QFSS
Insulator Material:
Liquid Crystal Polymer
Contact, Ground
Plane & Shield Material:
Phosphor Bronze
Plating:
Au over 50 µ" (1.27 µm) Ni
(Tin on Ground Plane tails)
Voltage Rating:
300 VAC mated with QMSS
Operating Temp:
-55 °C to +125 °C
RoHS Compliant:
Yes
Board Mates:
QMSS
Standoffs:
SO
Standard shield grounding
is GSSSSG. Application
Specific options available.
Increased insertion
depth for rugged applications
11 mm
Stack Height
• Increased
insertion depth
• Integral guide post
(1.30 mm)
.051"
NOMINAL
WIPE
PROCESSING
Lead–Free Solderable:
Yes
SMT Lead Coplanarity:
(0.10 mm) .004" max (026-078)
Board Stacking:
For applications requiring more
than two connectors per board,
contact ipg@samtec.com
HIGH-SPEED CHANNEL PERFORMANCE
QMSS-DP/QFSS-DP @ 11 mm Mated Stack Height
Rating based on Samtec reference channel.
For full SI performance data visit Samtec.com
or contact SIG@samtec.com
14
G b p s
Single-Ended
Signal routing
RECOGNITIONS
For complete scope of
recognitions see
www.samtec.com/quality
FILE NO. E111594
QFSS
PINS PER ROW
NO. OF PAIRS
04.25
PLATING
OPTION
TYPE
A
OTHER
OPTION
ALSO AVAILABLE
(MOQ Required)
• Headers without
Alignment Pins
• 8 Power Pins/End
• 4 or 8 Power Pins/End for
(2.36 mm) .093" thick board
• Guide Holes
• 64 (-DP) and 104 pins per row
(52 total pins per bank
40 signals + 12 grounds to shield = –D)
–026, –052, –078
–016, –032, –048
(16 pairs per bank = –D–DP)
= 10 µ" (0.25 µm)
Gold on Signal
Pins, Shield and
Ground Plane
(Tin on Signal Pin
tails, and Ground
Plane tails)
–L
= Single-Ended
–D
= 4 Power
Pins/End
(N/A with –A)
–PC4
= Differential Pair
–D–DP
No. of Banks x (21.34) .840 + (1.02) .040
(2.10) .083
(21.34) .840
02
(8.13)
.320
(0.635)
.025
(0.23)
.009
01
OTHER
SOLUTIONS
(0.10)
.004
(7.06)
.278
(7.44)
.293
(8.13)
.320
APPLICATION
QFSS
(0.89)
.035
–D
(1.02) .040 DIA
–D–DP
QMSS
(11.00)
.433
(2.00) .07874
02
(2.54)
.100
(1.78)
.070
See SO Series for precision
machined standoffs.
Notes:
Patented
Some lengths, styles and
options are non-standard,
non-returnable.
No. of Banks x (21.34) .840 + (12.87) .507
–PC4 OPTION
01
(2.54)
.100
Due to technical progress, all designs, specifications and components are subject to change without notice.
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.
WWW.SAMTEC.COM
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Samtec
:
QFSS-052-04.25-L-D-A QFSS-016-04.25-L-D-DP-PC4 QFSS-026-04.25-L-D-A QFSS-026-04.25-L-D-PC4 QFSS-
048-04.25-L-D-DP-A QFSS-016-04.25-L-D-DP-A QFSS-032-04.25-L-D-DP-PC4 QFSS-052-04.25-L-D-PC4 QFSS-
026-04.25-H-D-A-GP QFSS-026-04.25-H-D-A QFSS-052-04.25-H-D-PC4 QFSS-052-01-L-D-A-PC8 QFSS-052-01-L-
D-A QFSS-016-04.25-H-D-DP-PC4 QFSS-016-04.25-H-D-DP-PC8 QFSS-026-04.25-L-D-GP QFSS-048-04.25-H-D-
DP-A QFSS-052-04.25-L-D-A-P-TR QFSS-052-04.25-L-D-A-TR QFSS-104-04.25-H-D-A QFSS-104-04.25-L-D-A
QFSS-016-04.25-L-D-DP-PC8 QFSS-048-04.25-L-D-DP-A-P QFSS-052-04.25-H-D-A-P-TR QFSS-016-04.25-H-D-DP
QFSS-016-04.25-L-D-DP-P QFSS-026-04.25-H-D-PC8 QFSS-032-04.25-L-D-DP QFSS-032-04.25-L-D-DP-A-GP
QFSS-052-04.25-L-D-PC4-P-TR QFSS-064-04.25-L-D-DP-A QFSS-078-04.25-L-D-A-TR QFSS-016-04.25-L-D-DP-A-
GP QFSS-026-04.25-L-D-P-TR QFSS-032-04.25-H-D-DP-PC8 QFSS-032-04.25-L-D-DP-A QFSS-048-04.25-L-D-DP-
A-GP QFSS-026-04.25-H-D QFSS-032-04.25-H-D-DP QFSS-032-04.25-H-D-DP-A-GP QFSS-032-04.25-H-D-DP-
PC4 QFSS-048-04.25-L-D-DP-PC4 QFSS-052-04.25-H-D-A-P QFSS-064-04.25-L-D-DP QFSS-078-04.25-L-D-A-P-
TR QFSS-016-04.25-H-D-DP-A QFSS-026-04.25-H-D-PT4 QFSS-026-04.25-L-D-PC8 QFSS-048-04.25-L-D-DP-A-P-
TR QFSS-052-04.25-H-D-PC4-P-TR QFSS-078-04.25-L-D-PC4 QFSS-016-04.25-L-D-DP QFSS-026-04.25-L-D-A-GP
QFSS-026-04.25-L-D-A-TR QFSS-048-04.25-H-D-DP-PC4 QFSS-052-04.25-L-D-A-GP QFSS-026-04.25-H-D-A-BM
QFSS-052-04.25-H-D-A QFSS-052-04.25-H-D-A-GP QFSS-078-04.25-H-D-A QFSS-078-04.25-L-D QFSS-026-04.25-
L-D QFSS-026-04.25-L-D-PC4-TR QFSS-026-04.25-L-D-PT4 QFSS-052-04.25-L-D QFSS-078-04.25-L-D-A-P
QFSS-052-04.25-L-D-P QFSS-026-04.25-L-D-A-P-TR QFSS-048-04.25-L-D-DP QFSS-078-04.25-L-D-PC4-P QFSS-
078-04.25-L-D-PT4 QFSS-026-04.25-H-D-A-P-TR QFSS-026-04.25-H-D-PC4 QFSS-032-04.25-H-D-DP-A QFSS-
048-04.25-L-D-DP-P QFSS-078-04.25-H-D-PC4 QFSS-078-04.25-L-D-A QFSS-104-04.25-L-D-A-GP QFSS-016-
04.25-L-D-DP-PT8 QFSS-064-04.25-L-D-DP-GP QFSS-032-04.25-L-D-DP-PT4 QFSS-064-04.25-L-D-DP-A-GP
QFSS-016-04.25-L-D-DP-A-P-TR QFSS-032-04.25-L-D-DP-PT8 QFSS-026-04.25-L-D-PT8 QFSS-078-04.25-H-D-A-
GP QFSS-052-04.25-H-D-A-TR QFSS-032-04.25-L-D-DP-A-P QFSS-032-04.25-L-D-DP-A-TR QFSS-048-04.25-L-D-
DP-PT4 QFSS-052-04.25-L-D-PT4 QFSS-016-04.25-L-D-DP-PC4-P QFSS-078-04.25-L-D-PC8 QFSS-026-04.25-H-
D-PC4-TR QFSS-026-04.25-L-D-P QFSS-016-04.25-L-D-DP-PT4 QFSS-032-04.25-L-D-DP-A-P-TR QFSS-026-
04.25-L-D-A-BM QFSS-026-04.25-L-D-PC4-P QFSS-032-04.25-L-D-DP-A-GP-P
