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Switchcraft S12B Three Conductor .210 Diameter Headphone Jack - Stereo
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Switchcraft S12B Three Conductor .210 Diameter Headphone Jack - Stereo

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Part#: SWC-S12B
by Switchcraft
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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

p>2- and 3-CONDUCTOR MIL-SPEC, MIL-J-641 (E)

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.

PREFIX OPTIONS SERIES CIRCUITRY
Blank- 1/4" CommercialJack 1-Littel Jax®1- I
C- Accepts Mill Plug   2A- III
FA- .205" Faston Terminals   2B- IV
FAL- .205" Faston Terminals and .375" Long Bushing   3- V
L- .375" Long Bushing   3A- VI
PC- PC Terminals   3B- VII
S- Accepts .206 Diameter Plugs   3E- IX
  4B- XII





 TWO CONDUCTOR PART NUMBERS
Part Number Description Jack Schematic1 Typical Mating Plug
11 Open circuit I 250
C11 MIL Number M641/6-1 I 440
FA11 .205 inch FASTON terminal I 250
FAL11 .375 inch long bushing
.205 FASTON terminal
I 250
L11 .375 inch long bushing I 250
12A Tip shunt III 250
C12A MILNumber M641/12-1 III 440
L12A .375 inch long bushing III 250
PC12A PC board mount III 250
13 Isolated "make" circuit V 250
13A Transfer circuit VI 250
13E Isolated "break" circuit IX 250
THREE CONDUCTOR PART NUMBERS
12B Double open circuit IV 267
L12B .375 inch long bushing IV 267
C12B MIL number M641/5-1,
.210 inch inside diameter
 IV 480
13B  Tip shunt VII 267
14B  Double closed circuit XII 267
PART NUMBERS (.210 inch inside diameter bushing)
S11 2 conductor I S250
S12A 2 conductor III S250
S12B 3 conductor IV S267
S13B 3 conductor VII S267
1 Refer to jack schematics on pages 65 and 66. Other circuits are available; contact factory.

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)

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.

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.

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Product Details
Shipping Weight : 0.25 pounds
Manufacturer P/N : SWC-S12B
ECCN : EAR99
Schedule B Code : 8536690000
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