Harsh Environment Connectivity Solutions

1/4" Open Frame Jacks


2 conductor 1/4" open frame jacks are ideal for musical instrument and speaker connections. Jacks mate with standard 1/4" phone plugs and mount in a single 3/8" diameter hole.



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)

Commercial Jacks

Plug Diameter (inches) .210 .250
Insertion (maximum) 7 lb. 7 lb.
Withdrawal (minimum) 1 lb. 1 lb.

 


 

Military Jacks

Part Number C11 C12A C12B
Insertion (maximum) 6 lb. 7 lb. 6 lb.
Withdrawal (minimum) 2 lb. 3 lb. 1.5 lb.
Withdrawal (maximum) 7 lb. 7 lb. 5 lb.

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.