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ENCLOSEDJACKS
JACKS AND PLUGS
FAX: 773 792-2129
* Please visit the product pages on our website for the most up-to-date product information
.177" ENCLOSED JACKS
Two- and 3-conductor Unijax ? jacks have advanced features
93
of Hi-D Jax ? jacks including chassis/panel and PC mounting
UJ4B
and .177" bushing that mates with a variety of tini-telephone ?
plugs and patchcords. Bushing diameter is .281" inside
diameter; panel thickness is .125". Mounts in rows or arrays
on .469" centers.
SPECIFICATIONS
MECHANICAL
Insertion/Withdrawal: 2-conductor, 1.25 pounds nominal,
3 pounds maximum insertion. 3-conductor, 1.5 pounds nominal,
3 pounds maximum insertion. 2-conductor, 3 pounds nominal,
1.5 pounds minimum withdrawal. 3-conductor, 3 pound nominal,
1.5 pounds minimum withdrawal.
Life: 10,000 insertion/withdrawal cycles minimum.
ELECTRICAL
Contact Resistance: .10 ohms maximum.
Insulation Resistance: 1,000 M ? minimum.
Dielectric Withstanding Voltage: 500 V AC maximum.
MATERIAL
Housing: Thermoplastic.
Mounting Bushing: Nickel-plated copper alloy.
Tip and Ring Springs: Copper alloy, silver-plated.
Integral contacts.
Shunt Springs: Copper alloy, silver-plated
integral contacts.
Sleeve Terminal: Steel, tin-plated.
Hardware: Supplied with one, Number P2060
nickel-plated copper alloy locknut, and one,
Number P2061 nickel-plated copper alloy washer.
TWO CONDUCTOR PART NUMBERS
Typical
Part
Jack
Mating
Number
UJ1
UJ2A
Description
Open circuit
Single closed circuit
Schematic 1
I
III
Plug 2
TT251
TT251
THREE CONDUCTOR PART NUMBERS
UJ2B
UJ4B
Double Open circuit
Double closed circuit
IV
XII
TT253
TT253
1. See jack schematics on pages 79 and 80.
2. See Mating Plugs Section.
DIMENSIONS ARE FOR REFERENCE ONLY
Inch
(mm)
SWITCHCRAFT, INC. 5555 N. Elston Ave. ? Chicago, IL 60630
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