myMectronic
myMectronic

A Premier B2B Part Search

CIT Relay and Switch ST43LF520Q Tactile Switch

This tactile switch provides a reliable momentary contact interface for electronic devices, ensuring durable and consistent user input. Designed for easy installation, it features a stainless steel cover, phosphor bronze or stainless steel contacts with silver plating, and nylon actuators and housing for robustness. Suitable for applications requiring high durability and precise actuation, it offers multiple actuation forces and actuator lengths. Operating within -55°C to 90°C, it has a dielectric strength of 500 Vrms, contact resistance below 50 mΩ, and an electrical life exceeding 100,000 cycles, making it ideal for various electronic and industrial uses.

Authorized Distributors
Source:DigiKey
Part No:ST4.3LF520Q
Stock:1145
Inv Date:05-30-2026
Price: Unit price: $0.51
Buy/RFQ:

CIT Relay and Switch ST43LF520Q Tactile Switch Specifications:

  • Electrical Ratings: 50mA @ 48VDC
  • Electrical Life: 100,000 cycles typical, 1,000,000 cycles with stainless steel dome
  • Contact Resistance: < 50 mΩ initial
  • Actuation Force: 160 +/- 50gF, 200 +/- 50gF, 260 +/- 50gF, 520 +/- 50gF
  • Actuator Travel: 45 +/- 4 mm
  • Dielectric Strength: 500 Vrms min
  • Insulation Resistance: > 100 MΩ min
  • Operating Temperature: -55°C to 90°C
  • Storage Temperature: -55°C to 90°C
  • Actuator Material: 6/6 Nylon
  • Housing Material: 6/6 Nylon
  • Cover Material: Stainless Steel
  • Contact Material: Phosphor Bronze or Stainless Steel, Silver Plated
  • Terminals: Brass, Silver Plated
  • Dimensions vary with actuator length, multiple contact options available

Buy the CIT Series Switch: ST43LF520Q

Secure your electronic assemblies with the high-quality CIT Series ST43LF520Q tactile switch, engineered for durability, precise actuation, and easy installation. Featuring stainless steel contacts with silver plating, nylon actuators, and a stainless steel cover, this switch offers excellent electrical performance and long cycle life. It supports multiple actuation forces and actuator lengths for versatile applications. Operating over a temperature range of -55°C to 90°C, it ensures reliable performance under diverse conditions. Ideal for industrial, consumer electronics, or automation systems, order online today for fast delivery and exceptional quality.

Buy CIT Series ST43LF520Q tactile switch now and experience unmatched reliability and performance in electronic device interfaces.

Frequently Asked Questions

Where can I buy CIT Relay and Switch ST43LF520Q?

You can click on the BUY or RFQ button to purchase ST43LF520Q from an authorized CIT Relay and Switch distributor.

How do I troubleshoot issues or seek technical support for part ST43LF520Q?

You can download the ST43LF520Q datasheet or visit the CIT Relay and Switch website for support.

Who is the manufacturer of ST43LF520Q?

CIT Relay and Switch

CIT Relay and Switch Part List

Browse and search other CIT Relay and Switch parts, locate datasheets and stock

Sponsored by