ACV31012 Equivalent & Substitute Parts

Part Overview

The ACV31012 is an automotive SPST relay manufactured by Panasonic Electric Works, designed for 12VDC coil operation with a 20A contact rating. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and procurement planning. The relay operates as a non-latching, single-pole single-throw device with silver alloy cadmium-free contacts, suitable for automotive switching applications requiring reliable performance across extended temperature ranges.

Substiute Parts

ACV31012

Panasonic Electric WorksIn Stock: 823ACV31012 Datasheet

Current PartRFQ

ACVN51012

Panasonic Electric WorksIn Stock: 701ACVN51012 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACV31012 is determined by the following critical parameters that must remain consistent or compatible:

Mandatory Matching Parameters:

• Coil voltage: 12VDC
• Contact form: SPST-NO (1 Form A)
• Mounting type: Socketable
• Termination style: Plug In
• Operating temperature range: -40°C ~ 85°C minimum
• Coil resistance: 180 Ohms (ensures compatibility with existing drive circuits)

Allowable Variation Parameters:

• Contact rating (current): May exceed 20A (higher ratings provide backward compatibility)
• Coil current: Minor variation acceptable (66.7 mA to 67 mA range)
• Must operate/release voltages: Slight variation acceptable within automotive specifications
• Operate/release time: Variation acceptable if within automotive switching requirements
• Contact material composition: Silver alloy variants acceptable
• Packaging format: May differ from original

The ACVN51012 meets all mandatory matching criteria while providing enhanced contact rating (35A vs. 20A), making it a direct substitute for the obsolete ACV31012.

Parameter Comparison

Engineering Selection Recommendations

The ACVN51012 is the designated substitute for the obsolete ACV31012 based on the following engineering criteria:

Electrical Compatibility: Both relays operate on identical 12VDC coil voltage with matching 180-ohm coil resistance and 800mW power consumption. Coil current specifications are equivalent (67 mA vs. 66.7 mA), ensuring compatibility with existing drive circuits without modification.

Switching Characteristics: Contact form, switching voltage, operate time, and release time are identical between both parts. Must operate and release voltages are within acceptable automotive specification tolerances.

Mechanical Compatibility: Both relays feature socketable mounting with plug-in termination, enabling direct physical replacement without circuit board modifications or connector changes.

Thermal Performance: Identical operating temperature range (-40°C ~ 85°C) ensures equivalent performance across automotive environmental conditions.

Contact Rating Enhancement: The ACVN51012 provides a 35A contact rating compared to the ACV31012's 20A rating. This higher rating maintains backward compatibility for all applications originally designed for the 20A part while providing additional capacity margin for future design iterations.

Product Status: The ACVN51012 is active in production, ensuring long-term availability and supply chain stability compared to the obsolete ACV31012.

Frequently Asked Questions (FAQ)

Q: Can the ACVN51012 directly replace the ACV31012 without circuit modifications?

A: Yes. Both relays share identical coil voltage (12VDC), coil resistance (180 Ohms), contact form (SPST-NO), mounting type (socketable), and termination style (plug-in). No circuit modifications are required for direct substitution.

Q: Why does the ACVN51012 have a higher contact rating (35A vs. 20A)?

A: The higher contact rating reflects design improvements in the ACVN series while maintaining all other electrical and mechanical specifications. This provides enhanced current-carrying capacity and is fully backward compatible with applications originally rated for 20A.

Q: Are the coil current specifications close enough for direct substitution?

A: Yes. The coil current difference (67 mA vs. 66.7 mA) is negligible and falls within normal manufacturing tolerances. Both values are functionally equivalent for drive circuit design.

Q: What is the significance of the different contact material specifications?

A: The ACV31012 specifies "Silver Alloy, Cadmium Free" while the ACVN51012 specifies "Silver Alloy." Both are cadmium-free silver alloy contacts suitable for automotive applications. The ACVN51012 meets the same environmental and performance standards.

Q: Does the ACVN51012 meet RoHS compliance requirements?

A: The ACV31012 is explicitly RoHS compliant. The ACVN51012 RoHS status is not specified in the provided data. Verify RoHS compliance status with the manufacturer if this certification is required for your application.

Q: Are there packaging differences between these parts?

A: The ACV31012 packaging format is not specified. The ACVN51012 is supplied in bulk packaging. Confirm packaging requirements with your procurement process.

Q: What is the operational difference between the 0.6 VDC and 0.5 VDC must-release voltages?

A: Both values fall within automotive relay specification tolerances. The 0.1 VDC difference is negligible for practical automotive switching applications and does not affect substitution compatibility.