D20419-80 Datasheet, PDF (269/386 Pages) ITT Industries – Military/Aerospace

Microminiature Strip - .100/.050" Contact Spacing
MT
Performance and Material Specifications
WEIGHT
Contact
(with std. 1/2"
copper pigtails)
Insulator
(per contact
cavity)
Guide
Post
pin
socket
pin
MTB
socket
pin
MTV
socket
Stainless
Steel
Ibs.
.000088
.000088
.000046
.000013
.000031
.000009
.000079
gms.
.040
.040
.021
.006
.014
.004
.035
MATERIALS AND FINISHES
One-piece insulator:
Contacts:
MTB: glass-filled dially phthalate
MTV:glass-filled polyester
Copper alloy, gold plate
MECHANICAL FEATURES
No. of Contacts;
MTV:120 max.
MTB:81 max.
Wire Size:
Solid: #24 thru #30 AWG
Stranded: #26 thru #30 AWG
Contact Termination: Crimp Stationary
Size or Length:
MTV: 6.04" (153.42) max. "yardage"
MTB: 4.09" (103.89) max. "yardage"
Coupling:
Friction
Polarization:
Guide posts
Contact Spacing
Centers:
.050" (1.27) and .100" (2.54)
Test Data
CONTACT RESISTANCE
Test give constant resistance readings from 10µa to
3 amps on individually mated contacts. The maximum
allowable contact resistance, measured on the wire
at the rear of the contact, is 8 milliohms. The
average contact resistance is 6 milliohms.
Current Rating - 3 amps max.
Max. Voltage Drop - 24 millivolts at 3 amps.
Average Voltage Drop - 12 millivolts at 3 amps.
Low Level Contact Resistance - Measured volt-
age drop is .24 x 10 ^-8volts at 10 x 10 ^-6amps.
DIELECTRIC WITHSTANDING VOLTAGE
Min. Flashover voltage (at room temp.) at 60 cps rms
50% R.H.
Sea Level - 900 VAC, 70,000 feet. - 250 VAC
Solder Pot Contacts
Sea Level - 600 VAC, 70,000 feet-150 VAC
PCB Terminations
LENGTH
Contact cavities in 50-MIL STRIP connectors are in a single
row and located on .050" (1.27) centers or increments
thereof. MTV connectors can be supplied in lenghts up to 6.04
inches (157.42) with a maximum of 120 contacts on .050"
(1.27) centers. MTB connectors can be supplied in lengths up
to 4.09 inches (103.89) with a maximum of 81 contacts on
.050" (1.27) centers. Lengths of connectors can be calculated
as follows:
L=number of contacts times .050 (1.27) plus
.020 (0.51)
EXAMPLE:
50 contacts (installed in each cavity):
L=(50x.050") + .020" = 2.52" length of strip
L=(50x1.27mm) + (0.51mm) = (64.01mm) length of
strip
NOTES: MT not to be terminated with insulated wire in more than
41 cavities without adding backpotting support on socket side.
SOCKETS
L
.050 (1.27)
.050 (1.27)
L
.105 (2.67) MAX.
.290
(7.37)
MAX.
PINS
VIBRATION AND SHOCK
No discontinuity detected (in excess of 1 micro
second) after twelve 15-min. sweeps from 10 to
2000 cps at .060" (1.52mm) double aptitude or 20g,
or after twenty shocks of 50g. Connectors were
mounted to simulate service condition. Test con-
ducted to MIL-STD-202, Method 204A, Condition D
and Method 213, Condition G.
TEMPERATURE RANGE
MTB: - 55˚C to +149˚C
MTV: - 55˚C to +125˚C
ENGAGING AND SEPARATING FORCE
For an individual contact the maximum engaging
force is 8 ounces (226,80 grams). Minimum separat-
ing force is 0.5 ounces (14,17 grams) per contact.
Test conducted using min./max, bushings.
SALT SPRAY
No damabe or unacceptable increase in contact resist-
ance after mated sample subjected to 48 hours of salt
spray per MIL-STD-202, Method 101C, 5% solution,
Condidtion B.
CONTACT AND INSERT RETENTION
Over 5 lbs. (2,72 kg.) min. axial load.
CAV #1
PIN
CAV #1
SOCKET
LENGTH
SPECIFIED BY
CUSTOMER
STD* _{.100 (2.54)}
ALL EVEN
NUMBERED
CONTACTS
STAGGERED LENGTH
TO FACILITATE PCB
MOUNTING TYP.
STD*
.100 (2.54)
*Consult factory for variations.
Dimensions are shown in inches (millimeters).
Dimensions subject to change.
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