ASX21012 Equivalent & Substitute Parts

Part Overview

The ASX21012 is a telecom relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 12VDC coil. This component is designed for through-hole mounting applications requiring low-current switching at 10 mA contact rating. The ASX21012 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

ASX21012

Panasonic Electric WorksIn Stock: 984ASX21012 Datasheet

Current PartRFQ

V23079C1103B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 2730V23079C1103B301 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASX21012 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Contact form: DPDT (2 Form C)
• Coil voltage: 12VDC
• Mounting type: Through hole
• Termination style: PC Pin
• Coil type: Latching, single coil

Compatibility Considerations:

• Contact rating must equal or exceed 10 mA
• Switching voltage capability must support the application requirements
• Operating temperature range must encompass the ASX21012 range (-40°C ~ 70°C)
• Coil current and resistance values determine drive circuit compatibility

The V23079C1103B301 satisfies all mandatory matching criteria while providing enhanced electrical performance characteristics suitable for direct substitution in ASX21012 applications.

Parameter Comparison

Engineering Selection Recommendations

The V23079C1103B301 is suitable for ASX21012 replacement applications based on the following factors:

Functional Equivalence: Both relays share identical contact form (DPDT), coil voltage (12VDC), coil type (latching, single coil), mounting configuration (through hole), and termination style (PC pin). These parameters define the mechanical and electrical interface compatibility.

Performance Enhancement: The V23079C1103B301 provides superior contact rating (2 A versus 10 mA), extended switching voltage capability (250VAC/220VDC versus 10VDC), and wider operating temperature range (-40°C ~ 85°C versus -40°C ~ 70°C). These characteristics ensure compatibility with existing ASX21012 applications while supporting expanded operational requirements.

Product Status and Compliance: The V23079C1103B301 maintains active product status with RoHS compliance certification, ensuring long-term availability and regulatory alignment for new designs and legacy system support.

Drive Circuit Considerations: The V23079C1103B301 requires higher coil current (5.8 mA versus 2.9 mA) and lower coil resistance (2.06 kOhms versus 4.11 kOhms). Drive circuits must be verified to supply the increased coil current requirement.

Frequently Asked Questions (FAQ)

Q: Can the V23079C1103B301 directly replace the ASX21012 in existing PCB designs?

A: Direct replacement is possible if the drive circuit can supply the higher coil current (5.8 mA). The identical contact form, coil voltage, mounting type, and termination style ensure mechanical and electrical interface compatibility. PCB layout modifications are not required.

Q: What is the significance of the contact rating difference (10 mA versus 2 A)?

A: The ASX21012 is rated for 10 mA switching current, while the V23079C1103B301 is rated for 2 A. The substitute part supports higher current switching applications. For ASX21012 applications operating at or below 10 mA, the V23079C1103B301 operates well within its contact rating margin.

Q: How do the switching voltage specifications differ?

A: The ASX21012 supports switching voltages up to 10VDC maximum. The V23079C1103B301 supports 250VAC and 220VDC maximum switching voltages. For applications requiring only 10VDC switching, the V23079C1103B301 is fully compatible and provides additional voltage capability margin.

Q: Are there drive circuit modifications required for substitution?

A: The V23079C1103B301 requires 5.8 mA coil current compared to the ASX21012's 2.9 mA. Existing drive circuits must be evaluated to confirm they can supply this increased current. The lower coil resistance (2.06 kOhms versus 4.11 kOhms) results in proportionally higher current draw at 12VDC.

Q: What is the packaging difference between these parts?

A: The ASX21012 packaging is specified as dash (-), while the V23079C1103B301 is supplied in tube packaging. Both use PC pin termination suitable for through-hole PCB assembly.

Q: Does the operating temperature range difference affect substitution?

A: The V23079C1103B301 supports -40°C ~ 85°C, extending 15°C above the ASX21012's -40°C ~ 70°C range. For applications operating within the ASX21012 temperature range, the substitute part provides additional thermal margin. Applications requiring operation above 70°C benefit from the extended range.

Q: What compliance certifications apply to the V23079C1103B301?

A: The V23079C1103B301 is RoHS compliant and carries EAR99 ECCN classification. The HTSUS code is 8536.41.0020, consistent with the ASX21012 classification.