ACJ5112P Equivalent & Substitute Parts Reference

Part Overview

The ACJ5112P is a non-latching automotive relay manufactured by Panasonic Electric Works, designed for 12VDC applications with dual SPDT contact configuration and 20A switching capacity. This component is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is essential for ongoing system support, design updates, and supply chain continuity when original inventory becomes unavailable.

Key Parameters

Parameter	Value
Coil Voltage	12VDC
Coil Current	66.7 mA
Contact Form	SPDT (1 Form C) x 2
Contact Rating (Current)	20 A
Switching Voltage	14VDC - Nom
Must Operate Voltage	6.5 VDC
Must Release Voltage	0.8 VDC
Operate Time	10 ms
Release Time	10 ms
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Through Hole
Termination Style	PC Pin
Contact Material	Silver Alloy, Cadmium Free
Coil Resistance	180 Ohms
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ACJ5112P is determined by the following critical parameters:

Coil voltage matching: 12VDC requirement
Contact configuration: SPDT (1 Form C) x 2 dual-pole arrangement
Current rating: 20A minimum contact capacity
Switching voltage: 14VDC nominal operation
Voltage thresholds: Must operate at 6.5VDC minimum, must release at 0.8VDC maximum
Timing characteristics: 10ms operate and release times
Mounting and termination: Through-hole PC pin configuration
Environmental compliance: RoHS compliance and operating temperature range

The ACTE5R2 qualifies as a substitute part based on matching all critical electrical parameters, contact configuration, mounting type, and termination style. Variations in coil current (75mA vs. 66.7mA), coil power (900mW vs. 800mW), coil resistance (160 Ohms vs. 180 Ohms), and operating temperature range (-40°C ~ 110°C vs. -40°C ~ 85°C) remain within acceptable tolerance for automotive relay applications and do not compromise functional compatibility.

Parameter Comparison

Parameter	ACJ5112P (Main Part)	ACTE5R2 (Substitute)
Manufacturer	Panasonic Electric Works	Panasonic Electric Works
Coil Voltage	12VDC	12VDC
Coil Current	66.7 mA	75 mA
Contact Form	SPDT (1 Form C) x 2	SPDT (1 Form C) x 2
Contact Rating (Current)	20 A	20 A
Switching Voltage	14VDC - Nom	14VDC - Nom
Must Operate Voltage	6.5 VDC	6.5 VDC
Must Release Voltage	0.8 VDC	0.8 VDC
Operate Time	10 ms	10 ms
Release Time	10 ms	10 ms
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 110°C
Mounting Type	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin
Contact Material	Silver Alloy, Cadmium Free	Silver Alloy
Coil Resistance	180 Ohms	160 Ohms
RoHS Status	RoHS Compliant	RoHS Compliant
Product Status	Last Time Buy	Active

Engineering Selection Recommendations

The ACTE5R2 is the manufacturer-recommended substitute for the ACJ5112P. Both components are manufactured by Panasonic Electric Works and maintain RoHS compliance. The ACTE5R2 carries Active product status, ensuring continued availability and supply chain stability compared to the Last Time Buy status of the ACJ5112P.

The ACTE5R2 demonstrates an extended operating temperature range (-40°C ~ 110°C) relative to the ACJ5112P (-40°C ~ 85°C), providing enhanced thermal performance for demanding automotive environments. The marginal increase in coil current (75mA vs. 66.7mA) and coil resistance variation (160 Ohms vs. 180 Ohms) are within normal manufacturing tolerances and do not affect circuit compatibility in standard 12VDC automotive relay applications.

Selection of the ACTE5R2 is appropriate for new designs, system updates, and replacement applications where the ACJ5112P is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the ACTE5R2 directly replace the ACJ5112P in existing circuits?

A: Yes. Both relays share identical coil voltage (12VDC), contact configuration (SPDT x 2), current rating (20A), switching voltage (14VDC nominal), voltage thresholds (6.5VDC operate, 0.8VDC release), and timing characteristics (10ms operate and release). Through-hole PC pin termination is identical, enabling direct PCB substitution.

Q: What is the significance of the coil current difference (66.7mA vs. 75mA)?

A: The 8.3mA increase in coil current for the ACTE5R2 represents approximately 12.4% higher coil draw. This variation falls within normal relay manufacturing tolerances and does not compromise circuit functionality in standard automotive applications. Circuit design margins typically accommodate such variations.

Q: Why does the ACTE5R2 have a higher operating temperature range?

A: The ACTE5R2 supports operation to 110°C compared to the ACJ5112P's 85°C maximum. This extended range provides additional thermal margin for automotive environments subject to engine compartment heat exposure and represents an engineering improvement in the substitute design.

Q: Are there packaging differences between these parts?

A: The ACJ5112P is supplied in Tube packaging. The ACTE5R2 packaging specification is not provided in the technical data. Confirm packaging requirements with the supplier for procurement and assembly planning.

Q: Is the ACTE5R2 RoHS compliant?

A: Yes. The ACTE5R2 is RoHS compliant, matching the compliance status of the ACJ5112P and meeting automotive industry environmental standards.

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