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CIT Relay and Switch A21ASQ12VDC19D Automotive Relay

This 12 V DC automotive relay supports a switching current of up to 40 A with a sealed housing for enhanced durability. Featuring a quick connect terminal and SPST N.O. contact arrangement, it operates with a coil power of 1.9 W. Designed for automotive and lamp accessories, it provides reliable switching with a contact resistance of less than 30 milliohms, supported by contact material AgSnO2. The relay is resistant to shock and vibration, with an operating temperature range from -40°C to +125°C, and includes diode coil suppression for optimal performance.

Authorized Distributors
Source:DigiKey
Part No:A21ASQ12VDC1.9D
Stock:0
Inv Date:05-30-2026
Price: Unit price: $1.66578
Buy/RFQ:

CIT Relay and Switch A21ASQ12VDC19D Automotive Relay Specifications:

  • Coil Voltage: 12VDC
  • Coil Power: 1.9W
  • Contact Arrangement: SPST N.O.
  • Maximum Switching Power: 630W
  • Switching Current: 40A @ 14VDC
  • Contact Resistance: < 30 milliohms
  • Contact Material: AgSnO2
  • Mechanical Life: 10 million cycles
  • Electrical Life: 100,000 cycles @ rated load
  • Operating Temperature: -40°C to +125°C
  • Sealing: Sealed
  • Coil Suppression: Diode (1N4005)
  • Insulation Resistance: 100MΩ min. @ 500VDC
  • Dielectric Strength: 750V rms coil to contact, 500V rms contact to contact
  • Shock Resistance: 147 m/s² for 11 ms
  • Vibration Resistance: 1.5 mm double amplitude, 10–40Hz
  • Weight: approximately 35g
  • Dimensions: 26.0 x 26.0 x 24.5 mm (body), with quick connect terminals

Buy the Buy CIT Relay & Switch Automotive Relay Part Number A21ASQ12VDC19D Online

Purchase the CIT Relay & Switch automotive relay online today and experience reliable switching with 40A capacity, sealed housing for durability, and diode coil suppression. This 12V DC relay features quick connect terminals for easy installation, a contact resistance of less than 30 milliohms, and a contact material of AgSnO2 for excellent conductivity. Ideal for automotive and lamp accessories, it operates efficiently within a temperature range of -40°C to +125°C. Secure your vehicle’s electrical system with this high-performance relay, designed for long-term reliability and ease of use.

Get CIT Relay & Switch A21ASQ12VDC19D today—built for automotive reliability, high current switching, and long-lasting durability.

Frequently Asked Questions

Where can I buy CIT Relay and Switch A21ASQ12VDC19D?

You can click on the BUY or RFQ button to purchase A21ASQ12VDC19D from an authorized CIT Relay and Switch distributor.

How do I troubleshoot issues or seek technical support for part A21ASQ12VDC19D?

You can download the A21ASQ12VDC19D datasheet or visit the CIT Relay and Switch website for support.

Who is the manufacturer of A21ASQ12VDC19D?

CIT Relay and Switch

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