3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 0

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 1

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 2

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 3

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 4

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 5

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 6

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 7

3 NOS Switchcraft S12A Shorting Jacks; 0.210" Inside Diameter MIL Spec, US $16.50 – Picture 8

3 Nos Switchcraft S12a Shorting Jacks; 0.210" Inside Diameter Mil Spec

US $16.50

Middletown, Rhode Island, United States
Feb 12th

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3 NOS Switchcraft S12A Shorting Jacks. New, out of package items. Unsoldered. Two have tags, nuts and washers. The other has its nut but is missing the washer and tag. These do not accommodate 1/4" plugs. The inside hole diameter is 0.210" (see last pic). These jacks are for applications requiring polarization (use of plugs of different sizes) to prevent insertion of incorrect equipment. Specs from the internet: 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) 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; -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 Material-Insulation : Rigid plastic Material-Springs : Special copper alloy. Integral contacts are standard in the isolated switching circuits; fine silver contacts in C12A switching circuit Material-Sleeve Terminal : Copper alloy

“New, out of package. Unsoldered. Two have tags, nuts and washers. The other has a nut but is missing its washer.”

Brand	Switchcraft
Country/Region of Manufacture	United States
Model	S12A