cl" INDUSTRIES
•130 James Way, Southampton, PA 18966 - 3838 •Telephone: (215) 355-7080 •Fax: (215) 355-1088 •www.cwind.com
26
The card edge connector provides a fast means for
connecting/disconnecting single, double-sided or multi-
layer printed circuit boards.
Contact force consistency is obtained through the use
of a long cantilevered contact having a minimum
deflection angle and an extended self-cleaning, wiping
action. These contacts ensure positive connection to the
board, even when pad surfaces are irregular.
Good contact pressure is maintained with minimum
wear on PC board pads, even in hostile environments,
and after numerous insertions and withdrawals or shock
and vibration.
•Insulator protects contacts
from possible damage when
mated with PC board. •Polarizing key slots allow
positive polarization without
loss of a contact position.
•Contact and cover
design provides for
reuse. Connector can
be reterminated easily
and reliably to a new
section of cable.
•Patented Torq-Tite™ contact
keeps conductor under constant
tension. Assures a mechanically
and electrically, sound, gas-tight
connection.
•Sturdy cover posts
provide protection
against cable pulls of
25 lb or more.
•Recessed slot
provide means for
non-destructive
removal of cover.
Card Edge Connectors
27
•130 James Way, Southampton, PA 18966 - 3838 •Telephone: (215) 355-7080 •Fax: (215) 355-1088 •www.cwind.com
Card Edge Connectors
Con tact
•Lead-in on contact
helps align the conductor
with the IDC slot.
•Patented, offset tines
produce Torq-Tite™
termination for added
reliability.
•Long cantilever
produces less angular
deflection as PC board
is inserted.
•Contact with the PC
board is made near the
face of the connector for
increased wiping action.
•Unsupported contact tail
allows for self-adjustment
to compensate for PC board
irregularities.
Car d Edge Con n ector Featur es
•10, 20, 26, 34, 40, and 50 contact versions.
•Compatible with various PC board thicknesses, from .032 in. to
.070 in. thick.
•Standard gold-plated phosphor bronze contacts; tin-lead plated
contacts optional.
•Can be daisy-chained or applied in cable end terminations.
•Factory pre-assembled cover minimizes assembly time.
•Available with or without mounting flanges.
•Dependable long cantilever contact design maintains consistent
pressure even after repeated matings with PC boards. Insures a
long insertion/withdrawal cycle life and a good self-cleaning wipe
on each PC board pad.
•Self-adjusting contact compensates for variations in PC board
thickness.
•Closed entry protection prevents possible damage caused by PC
board irregularities.
Strain Relief
Strain relief is an integral part of CW Card Edge connector. A
strain relief lip is molded into the connector body. Upon installation
of the cover, this lip causes a strain relief bend in the cable that
prevents forces applied to the cable from being transferred to the
IDC termination.
Polar ization
Positive polarization is available on all CW card edge connectors.
A polarizing key, inserted into a V-slot located between any two
contacts, fits into a corresponding .037 in. slot cut into the PC
board. This technique not only provides positive polarization
without loss of a contact position, but also helps ensure precise
alignment of the contacts to the PC board’s pads.
Assembly
Assembling these connectors is both fast and easy using only a
simple bench press. The connector body is designed to orient the
cable to the contact tines, and the factory preassembled cover
permits termination of all conductors in one step–simply apply
opposing parallel forces on the connector cover and base.
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•130 James Way, Southampton, PA 18966 - 3838 •Telephone: (215) 355-7080 •Fax: (215) 355-1088 •www.cwind.com
28
Card Edge Connectors
Dimensions
Engineering Dimensions
Polarizing Key Slot Located Centrally
Between any Two Adjacent P.C. Pads.
P.C. BOARD DIMENSIONS
Board contact.
POLARIZING KEY
CWN - KEY 2
(2.5)
.10 .03
(0.8)
.39
(9.9)
PAD CENTERS .100±.003
(2.54±.08)
P.C. Pad Typ.
(1.40)
= A
.055
(10.2)
.40
.128
(3.25)
Resting place of
(10.4)
(13.0)
.51
.41
E
Position
Closed
VARIATION WITH MOUNTING FLANGES
P.C. board fully
inserted.
D
C
(±0.25)
±.010
C2
(±0.25)
±.010
1
B
Position
Open
(21.1)
.83
.09
(2.29)
COVER
VARIATION WITH NO FLANGES
(18.0)
.71
(1.88)
.074
(4.6)
.18
BASE
Point of
E1
C
SPACES @ = A
.100
(2.54)
DIA. 2 PLACES
G
F
(.94)
.037
.04
(1.0) x 45º
Chamfer
RECOMMENDED
1
2
9
10
21
10 9
CONNECTOR DIMENSIONS
2.520
(64.01)
2.020
(51.31)
D
.520
(13.21)
1.020
1.320
(25.91)
1.720
(33.53)
(43.69)
2.400
(60.96)
1.900
(48.26)
.400
1.200
1.600
(10.16)
(40.64)
(30.48)
(22.86)
50
40
34
26
20
CONTS.
10
NO.
(75.59)
2.976
(62.89)
2.476
2.176
(55.27)
3.400
(86.36)
(71.12)
2.800
(63.50)
2.500
3.900
(99.06)
(76.20)
3.000
(68.58)
2.700
.976
(24.79)
1.476
C
1.776
(37.49)
(45.11)
(33.02)
1.800
2.100
(53.34)
(45.72)
.900
1.300
AB
(38.10)
2.300
(58.42)
(50.80)
2.000
C
1.500
12
2.596
(65.94)
2.096
(53.24)
1.796
(45.62)
2.604
(66.14)
2.104
(53.44)
1.804
(45.82)
.44
(11.2)
(10.9)
(10.9)
.43
.43
.596
1.096
(15.14)
1.396
(27.84)
(35.46)
(15.34)
1.104
1.404
(28.04)
(35.66)
.604
EF
(10.9)
(10.9)
(10.9)
.43
.43
G
.43
1
mbmm_
u u u u u
cl” INDUSTRIES
29
•130 James Way, Southampton, PA 18966 - 3838 •Telephone: (215) 355-7080 •Fax: (215) 355-1088 •www.cwind.com
Card Edge Connectors
• Contacts: phosphor bronze standard.
• Contact Plating: 30µ in. gold (in mating area) over 50µ in.
nickel, standard; 10µ in. gold (in mating area) over 50µ in.
nickel, optional; 50µ in. gold (in mating area) over 50µ in.
nickel, optional; 100µ in. tin-lead optional
• Insulator Material: UL 94V-0 flame - retardant
thermoplastic
• Color: blue
• Operating temperature: -55º to +125ºC
• Current Rating: 1A(maximum) per contact
• Dielectric Withstand Voltage: greater than 500 Vdc at sea
level
• Insulation Resistance: greater than 5 x 109ohms
• Cover pull-off force 8 oz/contact min. (force along
contacts’ primary axes)
How to Or der Car d Edge Con n ector s
Specifications and Ordering Information
Specifications
CWR-XXX-XX-00XX
Type of Connector
170=Card edge connector without
mounting ears
171=Card edge connector with
mounting ears
Plating
0021=30µ in. gold (in mating area)
over 50µ in. nickel (standard)
0000=10µ in. gold (in mating area)
over 50µ in. nickel
0055=50µ in. gold (in mating area)
over 50µ in. nickel
0003=100µ in. tin-lead
Number of Contacts
(10, 20, 26, 34, 40, or 50)
How to Or der Car d Edge Cable Assem blies
Cable assemblies with two card edge connectors on a prescribed length of color-coded cable are available
with the connectors oriented per drawing 27-1. (#1 contacts oriented to brown conductor.)
For other lengths, orientations, numbers or combinations of connectors,contact your local value - added
distributor.
Number of Conductors
(10, 20, 26, 34, 40, 50)
DRAWING 27-1
L
Type of Connector
4=card edge connectors without
mounting ears. CWR-170-XX-0021
(See drawing 27-1)
5=card edge connectors with
mounting ears CWR-171-XX-0021
(See drawing 27-1)
Final assembly length “L”
1=3”+1/8”
2=6”+1/8”
3=12”+1/4”
4=24”+1/4”
5=48”+1/4”
CA-XX-9X0X
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