1/4" [6.35mm] Sealed Jacks and Plugs

1/4" [6.35mm] Sealed Jacks and Plugs
For nearly 75 years, Switchcraft jacks and plugs have been proven in some of the harshest environments possible. This new series takes durability even farther by adding a waterproof, IP66 seal when the jack and plug are mated. Nearly all configurations of 1/4 jacks and plugs are offered in these new sealed versions, so contact Switchcraft to use them in your design today!



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.


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.


Thermal Range: Commercial Jacks; -55C to +85C (non-operating); -20C to +65C (operating). Military Jacks; -55C to +85C (non-operating); -40C to +65C (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).


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.


  • Termination Style: Solder
  • Contact Plating: Nickel
  • Sealed: Sealed
  • Packaging Type: Bulk
  • Standard Connector Type: 1/4" Phone Jacks & Plugs


  • Contact Resistance: 0.03 Ohms
  • Dielectric Withstanding Voltage: 500 Volts
  • Insulation Resistance: 10000 MOhms
  • Current Rating: 1 Amps


  • Life Cycle: 10000 Cycles
  • Operating Force: 7 lbs


  • Temperature Range: -55C to +85C
  • Humidity Rating: MIL-STD-202 Method 106
  • Moisture Resistance: MIL-STD-202 Method 106
  • Salt Spray: MIL-STD-202 Method 101
  • Mechanical Shock: MIL-STD-202 Method 107
  • Maxiumum Temperature: 85 C


  • RoHS Compliant: Compliant
  • REACH Compliant: Compliant
  • Brand: Switchcraft
  • IP Rating: IP66
  • IP65: 1
  • IP66: 1


  • Terminal Material: Copper Alloy
  • Spring Material: Copper Alloy

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