UJ4B
Two- and 3-conductor Unijax® jacks have advanced features of Hi-D Jax® jacks including chassis/panel and PC mounting and .177 inch bushing that mates with a variety of tini-telephone® plugs and patchcords. Bushing diameter is .281 inch inside diameter; panel thickness is .125 inches. Mounts in rows or arrays on .469 inch 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(omega) minimum.
Dielectric Withstanding Voltage: 500 V AC maximum.
| TWO CONDUCTOR PART NUMBERS |
| Part Number |
Description |
Jack Schematic |
Typical Mating Plug |
| UJ1 |
Open circuit |
I |
TT251 |
| UJ2A |
Single closed circuit |
III |
TT251 |
| THREE CONDUCTOR PART NUMBERS |
| UJ2B |
Double Open circuit |
IV |
TT253 |
| UJ4B |
Double closed circuit |
XII |
TT253 |
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.
click here to download a schematic
drawing
(you will need to have Adobe Acrobat installed on your system to do this)
