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C&K COMPONENTS 8121SD3V4GE Snap-acting Pushbutton Switch

The C&K COMPONENTS 8121SD3V4GE is a snap-acting momentary pushbutton switch designed for a range of applications including instrumentation, computer peripherals, and telecommunications equipment. It offers a positive tactile feel, multi-position options, and a wide variety of termination options. The switch features an epoxy terminal seal compatible with bottom wash cleaning methods and is available in RoHS compliant models. Constructed with glass-filled nylon or diallyl phthalate (DAP) case, glass-filled nylon or polyester plunger, and brass or zinc bushings, this switch provides reliable performance and durability.

Authorized Distributors
Source:Newark
Part No:8121SD3V4GE
Stock:281
Inv Date:06-15-2026
Price: Unit price: $12.61
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Source:DigiKey
Part No:8121SD3V4GE
Stock:0
Inv Date:06-15-2026
Price: Unit price: $11.7286
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Source:DigiKey
Part No:8121SD3V4GE
Stock:281
Inv Date:06-15-2026
Price: Unit price: $10.26
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Part No:8121SD3V4GE
Stock:62
Inv Date:06-16-2026
Price: Unit price: $11.99
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Part No:8121SD3V4GE
Stock:0
Inv Date:06-15-2026
Price: Unit price: $11.99
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Part No:8121SD3V4GE
Stock:564
Inv Date:06-15-2026
Price: Unit price: $8.59
Buy/RFQ:
Part No:8121SD3V4GE
Stock:564
Inv Date:06-15-2026
Price: Unit price: $8.59
Buy/RFQ:

C&K COMPONENTS 8121SD3V4GE Snap-acting Pushbutton Switch Specifications:

  • Contact Rating: 0.4 VA max. @ 20 V AC or DC (B contact material), 1 AMP @ 120 V AC or 28 V DC (G contact material)
  • Electrical Life: 60,000 make-and-break cycles
  • Contact Resistance: Below 50 mΩ typ. initial
  • Insulation Resistance: 10[9] Ω min.
  • Dielectric Strength: 1,000 Vrms min.
  • Operating Temperature: -30ºC to 75ºC (8X2X models), -30ºC to 65ºC (U8X1 models)
  • Cap Installation Force: 10 lbs. max.
  • Solderability: Per MIL-STD-202F method 208D or EIA RS-186E method 9
  • Case Material: Glass filled nylon 6/6 or diallyl phthalate (DAP)
  • Plunger Material: Glass filled nylon or glass filled polyester (PBT)
  • Cap and Frame Material: Nylon
  • Bushing Material: Brass or zinc, nickel plated
  • Housing Material: Stainless steel
  • Switch Support Material: Brass or steel, matte-tin plated
  • Contact Material (8X21, U8X1): Coin silver, with gold plate over nickel plate
  • Contact Material (8X25): Copper alloy, with gold plate over nickel plate
  • Terminal Seal: Epoxy

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How do I troubleshoot issues or seek technical support for part 8121SD3V4GE?

You can download the 8121SD3V4GE datasheet or visit the C&K COMPONENTS website for support.

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