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
SYSTEM
LP
(0.40 mm) .0158"
ST4 SERIES
ULTRA FINE PITCH HEADER
Super-low
profile
Mates with:
SS4
SPECIFICATIONS
For complete specifications
and recommended PCB layouts
see www.samtec.com?ST4
1 mm
contact
wipe
Excellent
normal
force
Insulator Material:
Black LCP
Contact Material:
Phosphor Bronze
Plating:
Super-fine
.4 mm pitch
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
Cost-efficient
Blade & Beam
contact design
Narrow body
design saves
space on board
Rated @ 3dB Insertion Loss
SS4/ST4
4 mm Stack Height
with PCB effects*
w/o PCB effects**
13.5 GHz / 27 Gbps
15.5 GHz / 31 Gbps
Processing:
Lead-Free Solderable:
Yes
SMT Lead Coplanarity:
(0.10 mm) .004" max
Single-Ended Signaling
Differential Pair Signaling
7.0 GHz / 14 Gbps
4.5 GHz / 9 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 sig@samtec.com
RECOGNITIONS
For complete scope of
recognitions see
www.samtec.com/quality
LEAD
STYLE
PLATING
OPTION
POSITIONS
PER ROW
ST4
D
P
TR
(Required
in callout)
–1.00
= 1.00 mm
(Required
in callout)
–L
–10, –20,
–30, –40, –50
–TR
= Tape &
Reel
= 10µ" (0.25 µm)
Gold on contact,
Matte Tin on tail
–1.50
= 1.50 mm
–P
= Pick &
Place Pad
–2.50
= 2.50 mm
LEAD
STYLE
MATED HEIGHT
A
B
(1.00) (3.08)
.039 .121
(1.50) (3.58)
.059 .141
(2.50) (4.58)
.098 .180
No. of positions x
(0.40) .01575 + (1.58) .062
–1.00
–1.50
–2.50
ST4
MATED
HEIGHT
SS4
(3.70)
.146
MATED HEIGHT*
ST4
SS4 LEAD STYLE
LEAD
STYLE
–1.00
–1.50
–2.50
–3.00
–3.50
B
(4.00) .157
(4.50) .177
(5.50) .217
(4.50) .177
(5.00) .197
(6.00) .236
A
(4.00)
.157
(0.20) .008
(0.40) .01575
*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.