ASX2204H Equivalent & Substitute Parts

Part Overview

The ASX2204H is a telecom relay manufactured by Panasonic Electric Works, featuring a dual-pole double-throw (DPDT) contact configuration with a 4.5VDC coil. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

The ASX2204H is designed for telecom applications requiring low-current switching at 10 mA contact rating. Due to its obsolete status, sourcing direct replacements requires evaluation of substitute parts that maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

ASX2204H

Panasonic Electric WorksIn Stock: 768ASX2204H Datasheet

Current PartRFQ

V23079B1211B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 769V23079B1211B301 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASX2204H is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Coil voltage: 4.5VDC (exact match required)
• Contact form: DPDT (2 Form C) configuration
• Mounting type: Through Hole
• Termination style: PC Pin
• Coil type: Latching, Dual Coil

Allowable Parameter Variations:

• Contact rating current may exceed 10 mA (higher current capability is acceptable for low-current applications)
• Switching voltage may exceed 10VDC maximum (higher voltage rating provides additional margin)
• Operating temperature range may extend beyond -40°C ~ 70°C (wider range is acceptable)
• Coil resistance variation is acceptable within functional operating parameters
• Operate and release times within similar millisecond ranges are acceptable

The substitute part V23079B1211B301 meets all mandatory compatibility criteria while providing enhanced electrical specifications suitable for the ASX2204H application.

Parameter Comparison

Engineering Selection Recommendations

The V23079B1211B301 manufactured by TE Connectivity Potter & Brumfield Relays is a suitable substitute for the obsolete ASX2204H based on the following factors:

Electrical Compatibility: The substitute maintains identical coil voltage (4.5VDC), contact configuration (DPDT), and coil type (latching, dual coil). The higher contact current rating (2 A versus 10 mA) and extended switching voltage specification (250VAC/220VDC versus 10VDC) provide enhanced electrical capability without compromising the original application requirements.

Mechanical Compatibility: Both components feature through-hole mounting with PC pin termination, ensuring direct mechanical compatibility in existing circuit board layouts.

Product Status: The V23079B1211B301 is classified as active, providing long-term availability and supply chain stability compared to the obsolete ASX2204H.

Compliance: The substitute part is RoHS compliant and carries EAR99 ECCN classification, consistent with the original component's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can the V23079B1211B301 directly replace the ASX2204H in existing applications?

A: Yes. Both components share identical coil voltage (4.5VDC), contact configuration (DPDT), mounting type (through hole), and termination style (PC pin). The substitute's higher electrical ratings do not create compatibility issues for applications designed for the ASX2204H's specifications.

Q: Why does the substitute have a lower coil resistance (145 Ohms versus 289 Ohms)?

A: Lower coil resistance results in higher coil current draw at the same voltage. The V23079B1211B301 requires approximately 31 mA coil current compared to the ASX2204H's 15.6 mA. Circuit design must accommodate this increased current requirement during coil energization.

Q: What is the significance of the higher contact current rating on the substitute?

A: The V23079B1211B301 is rated for 2 A contact current, compared to the ASX2204H's 10 mA rating. This higher rating indicates the substitute can safely handle greater switching currents. For applications limited to 10 mA switching, this enhanced capability provides additional safety margin without affecting performance.

Q: Are there packaging differences between these components?

A: The ASX2204H is specified with dash (-) packaging notation, while the V23079B1211B301 is supplied in bulk packaging. Both components use identical through-hole PC pin termination suitable for standard PCB assembly processes.

Q: How do the operating temperature ranges compare?

A: The ASX2204H operates from -40°C to 70°C, while the V23079B1211B301 extends to -40°C to 85°C. The substitute's wider temperature range provides additional operational margin for applications requiring extended temperature performance.

Q: What is the difference in switching speed between these relays?

A: The V23079B1211B301 operates 1 ms faster (4 ms versus 5 ms) and releases 1 ms slower (6 ms versus 5 ms). These timing differences are negligible for most telecom applications and fall within acceptable switching speed tolerances.