Two Conductor, Open Circuit, Headphone Jack (Mono)

1/4" PHONE JACKS

1. 14B
2. FAL-11 .205 FASTON TERMINAL
3. PC-12A
4. 11

click here to download a schematic drawing

click here to download a schematic drawing

Littel-Jax® COMMERCIAL PHONE JACKS

2- and 3-CONDUCTOR

Littel-Jax phone jacks mate with standard commercial phone plugs and are available with .25 inch and .21 inch inside diameter bushings.

MIL Littel-Jax® PHONE JACKS

MIL jacks mate with MIL-type phone plugs with .25 inch (6.35mm) or .21 inch (5.34mm) diameter bushings. Numbers C11 and C12B have a non-turn locating pin which keys the jack to the mounting surface. For low contact resistance applications, jack number C12A has fine silver contacts on shunts and tip springs.

MOUNTING

Chassis/Panel: See Mounting Data drawing below; small hole is required only for jacks numbers C11 and C12B with non-turn locating pin.

Maximum Panel Thickness: .156 inch (4mm) for standard .276 inch (7mm) long bushing; .25 inch (6.35mm) for .375 inch (9.5mm) long bushing.

NOTE: For panels thicker than .25 inch see Thick Panel Phone Jax.

Insulated Mount: See drawing. S1028 flatwasher and Part Number S1029 shoulder washer must be ordered separately for mounting in .437 inch diameter hole.

NOTE: See Hi-D Jax® for jack specifically designed for insulated mounting without additional washers.

PC Board Mounting: See Recommended PC Board Layout drawing below for jacks with PC terminals. Recommended PC board thickness is .062 inches.

Mounting Centers: 1.188 inch (30mm) recommended. Centers may vary with jack selected, for example, Number 11 mounts on .813 inch (20.6mm) and 14B mounts on 1.125 inch (28.6mm) minimum centers.

SPECIFICATIONS:

MECHANICAL

Life: 

         Commercial Jacks - 10,000 insertion/withdrawal cycles, minimum.

        Military Jacks - 20,000 insertions/withdrawals, minimum.

Mechanical Shock: Military Jacks - Per MIL-STD 202, method 213, Test Condition H (75g).

Vibration: Military Jacks - Per MIL-STD-202, method 213, (10-55 Hz).

Insertion/Withdrawal Forces: (see charts below)

ELECTRICAL

Contact Resistance: 

        Commercial Jacks - .030 ohms maximum (initial), .050 ohms maximum (after humidity, durability exposure). Per MIL-STD-202E.

        Military Jacks - .010 ohms maximum (initial), .020 ohms maximum (after life), .10 ohms maximum (after salt spray).

Insulation Resistance: 

        Commercial Jacks - 10,000 M(omega) minimum (initial), 1,000 M(omega) minimum (after humidity).

        Military Jacks - 10,000 M(omega) minimum (initial), 1,000 M(omega) minimum (after humidity, durability exposure).

Dielectric Withstanding Voltage: 500 V, 60 Hz (rms) AC.

Contact Rating: 1 A, 25 V DC.

ENVIRONMENTAL

Thermal Range: 

        Commercial Jacks; -55°C to +85°C (non- operating); -20°C to +65°C (operating).

        Military Jacks; -55°C to +85°C (non-operating); -40°C to +65°C (operating).

Thermal Shock: 

        Commercial Jacks - Per MIL-STD 202, method 107. 

        Military Jacks - Per MIL-STD 202, method 107.

Humidity: 

        Commercial Jacks - Per MIL-STD 202, method 106. 

        Military Jacks - 0% to 95% operating and non-operating.

Salt Spray: 

        Commercial Jacks - Per MIL-STD 202, method 101. 

       Military Jacks - Per MIL-STD 202, method 101 (48 hours).

Moisture Resistance: Military Jacks - Per MIL-STD 202, method 106 (240 hours).

MATERIAL

Mounting Bushing: Nickel-plated copper alloy.

Insulation: Rigid plastic.

Springs: Special copper alloy. Integral contacts are standard in the isolated switching circuits;  fine silver contacts in C12A switching circuit.

Sleeve Terminal: Copper alloy.

Hardware: Supplied with one Number P10001 copper alloy nickel-plated hex nut, and one Number S1022 steel nickel-plated washer - except copper alloy nickel-plated washer Number S10451 supplied on C11, C12A and C12B.

* Commercial jacks feature integral contacts. Integral contacts should not be used where low contact resistance is a requirement.