ASX2104H Equivalent & Substitute Parts

Part Overview

The ASX2104H is a telecom relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 4.5VDC coil. This component is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new design implementations. The relay is designed for through-hole mounting with PC pin termination and operates across a temperature range of -40°C to 70°C.

Substiute Parts

ASX2104H

Panasonic Electric WorksIn Stock: 772ASX2104H Datasheet

Current PartRFQ

V23079C1111B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 780V23079C1111B301 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASX2104H is determined by the following critical parameters:

Primary Compatibility Criteria:

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

Secondary Compatibility Criteria:

• Contact rating current: Must equal or exceed 10 mA
• Switching voltage: Must equal or exceed 10VDC
• Coil current: Should be comparable to 7.8 mA for circuit design compatibility
• Operating temperature range: Must encompass or exceed -40°C to 70°C
• Coil type: Latching, Single Coil (exact match required)

The V23079C1111B301 from TE Connectivity Potter & Brumfield Relays meets all primary criteria and exceeds secondary criteria, making it a valid substitute for the obsolete ASX2104H.

Parameter Comparison

Engineering Selection Recommendations

The V23079C1111B301 is a direct functional substitute for the obsolete ASX2104H. Both relays share identical coil voltage, contact form, mounting type, and termination style. The substitute is currently in active production status, ensuring long-term availability and supply chain continuity.

The V23079C1111B301 provides enhanced electrical performance with higher contact current rating (2 A versus 10 mA) and superior switching voltage capability (250VAC/220VDC versus 10VDC). The substitute operates across a wider temperature range (-40°C to 85°C) and achieves faster switching times (4 ms versus 5 ms).

Circuit design modifications are required to accommodate the higher coil current requirement (15.6 mA versus 7.8 mA) and lower coil resistance (289 Ohms versus 579 Ohms). The substitute's lower must-operate voltage (3.38 VDC versus 3.6 VDC) provides improved operational margin in low-voltage applications.

The V23079C1111B301 carries RoHS compliance certification, meeting modern environmental and regulatory standards. ECCN classification remains EAR99 for both components.

Frequently Asked Questions (FAQ)

Q: Can the V23079C1111B301 directly replace the ASX2104H without circuit modifications?

A: The V23079C1111B301 is mechanically and functionally compatible as a through-hole DPDT relay with 4.5VDC coil voltage. However, the substitute requires higher coil drive current (15.6 mA versus 7.8 mA), necessitating circuit design review to ensure the coil driver can supply the increased current demand.

Q: What is the primary reason the ASX2104H requires substitution?

A: The ASX2104H is classified as obsolete by the manufacturer. The V23079C1111B301 is an active production component from TE Connectivity, ensuring continued availability and supply chain reliability.

Q: Are there dimensional or pinout differences between these relays?

A: Both relays feature through-hole PC pin termination and DPDT (2 Form C) contact configuration. Mechanical compatibility should be verified against PCB layout specifications, as exact footprint dimensions are not provided in the technical parameters.

Q: How does the contact material difference affect performance?

A: The ASX2104H uses Silver Palladium (AgPd) contacts, while the V23079C1111B301 uses Silver Nickel (AgNi) contacts. Both materials are suitable for low-current switching applications. Contact material selection depends on specific application requirements regarding contact resistance, wear characteristics, and environmental exposure.

Q: What is the impact of the coil resistance difference?

A: The V23079C1111B301 has lower coil resistance (289 Ohms versus 579 Ohms), resulting in higher coil current draw at the same voltage. This requires circuit design verification to ensure the coil driver circuit can supply 15.6 mA without exceeding component ratings.

Q: Is the V23079C1111B301 suitable for the same switching voltage applications?

A: The V23079C1111B301 exceeds the switching voltage requirement with a maximum rating of 250VAC/220VDC compared to the ASX2104H's 10VDC maximum. This makes the substitute suitable for higher-voltage switching applications while remaining compatible with the original 10VDC specification.