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CIT Relay and Switch A21CSQ12VDC16 Automotive Relay

This is a 12 V DC automotive relay with a quick connect terminal shape. Featuring a single-pole double-throw contact arrangement rated for 40 A and sealed for protection, it operates with a coil power of 1.6 W and standard coil suppression. It is suitable for automotive and lamp accessories, has a compact size of approximately 26 mm x 26 mm x 24.5 mm, and supports PCB mounting or quick connect terminals. The relay complies with RoHS standards and offers reliable switching capacity up to 40A at 14VDC, making it ideal for vehicle electrical systems and control applications.

Authorized Distributors
Source:DigiKey
Part No:A21CSQ12VDC1.6
Stock:20927
Inv Date:05-30-2026
Price: Unit price: $2.87
Buy/RFQ:
Part No:A21CSQ12VDC1.6
Stock:500
Inv Date:05-30-2026
Price: Unit price: $2.56
Buy/RFQ:
Part No:A21CSQ12VDC1.6
Stock:500
Inv Date:05-30-2026
Price: Unit price: $2.56
Buy/RFQ:

CIT Relay and Switch A21CSQ12VDC16 Automotive Relay Specifications:

  • Dimensions: 26.0 x 26.0 x 24.5 mm
  • Operating Temperature: -40°C to +125°C
  • Storage Temperature: -40°C to +155°C
  • Contact Arrangement: SPDT (Single-Pole Double-Throw)
  • Contact Resistance: < 30 milliohms
  • Max Switching Power: 630W
  • Switching Capacitiy: 40A at 14VDC
  • Coil Voltage: 12VDC
  • Coil Resistance: 15.6 ohms
  • Coil Power: 1.6W
  • Operating Voltage: 6VDC to 24VDC
  • Sealed and RoHS Compliant
  • Material: Copper alloy contacts, sealed for protection
  • Solderability: 260°C for 5 seconds
  • Electrical Life: 100,000 cycles
  • Mechanical Life: 10 million cycles

Buy the Automotive Series A2 SPDT Relay: A21CSQ12VDC16

Purchase the CIT Relay & Switch automotive relay with 12VDC coil and 40A switching capacity online today. Its sealed design ensures protection in automotive environments, while quick connect terminals make installation straightforward. With a compact size of 26 mm x 26 mm x 24.5 mm, this relay offers excellent performance for vehicle lighting, accessories, and control systems. Designed with high-quality copper contacts and RoHS compliance, it guarantees long-term durability and reliable operation across a broad temperature range, making it perfect for various automotive electrical applications.

Buy CIT Relay & Switch automotive series A2 SPDT relay with 40A capacity and quick connect terminals now and experience unmatched reliability and performance.

Frequently Asked Questions

Where can I buy CIT Relay and Switch A21CSQ12VDC16?

You can click on the BUY or RFQ button to purchase A21CSQ12VDC16 from an authorized CIT Relay and Switch distributor.

How do I troubleshoot issues or seek technical support for part A21CSQ12VDC16?

You can download the A21CSQ12VDC16 datasheet or visit the CIT Relay and Switch website for support.

Who is the manufacturer of A21CSQ12VDC16?

CIT Relay and Switch

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