A21CSP24VDC1.6R

Relay Automotive Overview

The A21CSP24VDC1.6R is an automotive SPDT relay with a 24VDC coil and 40A switching capacity. It features a non-latching coil type, 7ms operate time, and operates within -40°C to 125°C. The coil resistance is 360Ω ±10%, requiring 66.7mA current. Must operate voltage is 15.6VDC, while must release voltage is 2.4VDC. Contact resistance is under 30 milliohms initially. Maximum switching power is 630W at 75VDC. The unit supports PCB pin mounting.

Relay Automotive Feature Summary

• Large switching capacity up to 40A for high-current applications
• Small size and light weight design suitable for space-constrained environments
• PCB pin and quick connect mounting options available

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control
• Industrial equipment switching

Relay Automotive Procurement Notes

Verify the specific suffix 'R' indicates the resistor variant rather than the standard 'D' diode version. Confirm the 24VDC coil rating matches the system voltage. Check RoHS compliance status if required by project specifications. Ensure the operating temperature range of -40°C to 125°C meets environmental requirements. Validate the SPDT contact arrangement against circuit logic needs.

Relay Automotive Selection Notes

Choose this model when a 24VDC control signal is available and high current switching is necessary. The SPDT configuration allows for common terminal distribution. Consider the 7ms operate time for timing-sensitive circuits. The robust 40A rating provides headroom for inductive loads. Verify physical dimensions fit the PCB layout constraints.

Relay Automotive Part Context

This component belongs to CIT's automotive relay series, designed for reliable performance in vehicle environments. The A21 series offers various coil voltages and contact arrangements. This specific model targets applications requiring durable switching solutions with standardized mounting interfaces.

Relay Automotive Replacement Considerations

The A21CSP24VDC1.6D is a similar SPDT relay but uses a diode instead of a resistor. Ensure the suppression method matches the circuit design. Other A21 variants may differ in coil voltage or contact rating.