1/4" SHIELDED PHONE JACKS AND SF-JAX® SHORT FRAME JACKS
1. 1/4" SHIELDED PHONE JACK SERIES CN12A
2. 1/4" SHIELDED PHONE JACK SERIES CN12A
click here to download a schematic
drawing
(you will need to have Adobe Acrobat installed on your system to do this)

1/4" SHIELDED PHONE JACKS
Shield is assembled as part of the jack; cover "snaps" into place. Shield is designed for Hi Z circuits. Mounting is through a 3/8 inch diameter hole in chassis/panel up to .156 inches thick with hex nut and flat washer (supplied). On special order, jacks with .21 inch inside diameter bushing are available.
SPECIFICATIONS
MATERIAL
Cover and Shield: Copper alloy, nickel-plated.
Cable Entry Insulation: Thermoplastic.
SF-Jax® SHORT FRAME JACKS
Part No. |
Cond. |
Schematic Number |
Typical Mating Plug |
MIL Type |
Contacts |
Rating |
Mounting In. (mm) |
| 24B |
3 |
XII |
267 |
---- |
Fine Silver |
3A 125V AC |
.375 (9.52) hole, mounts in panels up to .156 (3.96) thick |
| 25 |
2 |
XIII |
250 |
---- |
| ý53B |
3 |
VII |
267 |
---- |
| ý54A |
2 |
XI |
250 |
---- |
| ý54B |
3 |
XII |
267 |
---- |
| ý55 |
2 |
XIII |
250 |
---- |
| ý-55B |
3 |
XV |
482 |
JJ-095, M641/14-1 |
Long spring design reliability with minimum behind-panel depth. Series 50 same as Series 20, except solder lug location requires more depth, but less panel space. Number C55B has MIL type insulation and finish.
| TWO CONDUCTOR PART NUMBERS |
Part Number
|
Description
|
Jack Schematic1
|
CN11
|
Uses Number 11 Littel-Jax® jacks
|
I
|
| ý CN12A |
Uses Number 12A Littel-Jax jacks |
III |
| ý Special order only. Contact Switchcraft. |
| THREE CONDUCTOR PART NUMBERS |
CN12B
|
Uses Number 12B Littel-Jax jacks
|
IV
|
| ý CN13B |
Uses Number 13B Littel-Jax jacks |
VII |
1 See jack schematics on pages 65 and 66. 2 See Plug Section for mating information. ý Special order only. Contact Switchcraft. |