Omron G2A-434A DC12 Equivalent & Substitute Parts

Part Overview

The Omron G2A-434A DC12 is a general purpose relay with 4PDT (4 Form C) contact configuration, rated for 500 mA at 12VDC coil voltage. This socketable relay is designed for applications requiring multiple independent switching circuits with moderate current handling. The G2A-434A DC12 is classified as obsolete, making identification of suitable substitute components necessary for ongoing system support and new design implementations.

Substiute Parts

G2A-434A DC12

Omron Automation and SafetyIn Stock: 814G2A-434A DC12 Datasheet

Current PartRFQ

MYQ4Z DC12

Omron Automation and SafetyIn Stock: 876MYQ4Z DC12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the G2A-434A DC12 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Coil voltage: 12VDC
• Contact form: 4PDT (4 Form C)
• Coil type: Non Latching
• Switching voltage rating: 250VAC, 125VDC - Max
• Must operate voltage: 9.6 VDC
• Must release voltage: 1.2 VDC

Allowable Variation Parameters:

• Contact rating current: Equal to or greater than 500 mA
• Mounting type: Different mounting types acceptable if circuit board layout permits
• Termination style: Different termination acceptable if socket compatibility or PCB design allows
• Operating temperature range: May be extended beyond -10°C ~ 40°C
• Coil current: May vary within acceptable design margins
• Operate/Release time: May vary within acceptable application timing requirements

The Omron MYQ4Z DC12 meets all mandatory matching parameters while providing enhanced specifications in contact current rating (1 A vs. 500 mA) and extended operating temperature range (-55°C ~ 60°C vs. -10°C ~ 40°C).

Parameter Comparison

Engineering Selection Recommendations

The Omron MYQ4Z DC12 is a suitable substitute for the obsolete G2A-434A DC12 based on the following engineering criteria:

Functional Equivalence: Both relays share identical coil voltage (12VDC), contact configuration (4PDT), switching voltage rating (250VAC, 125VDC - Max), and coil actuation thresholds (9.6 VDC must operate, 1.2 VDC must release). These parameters ensure equivalent electrical performance in the switching circuit.

Enhanced Specifications: The MYQ4Z DC12 provides higher contact current rating (1 A vs. 500 mA), extended operating temperature range (-55°C ~ 60°C vs. -10°C ~ 40°C), and full sealing with RoHS compliance. These enhancements support broader application requirements without performance degradation.

Product Status: The MYQ4Z DC12 maintains active product status with full manufacturer support, ensuring long-term availability and supply chain continuity compared to the obsolete G2A-434A DC12.

Design Considerations: The MYQ4Z DC12 uses through-hole PC pin termination instead of socketable plug-in mounting. Circuit board redesign or adapter solutions may be required for direct mechanical replacement. Coil resistance variation (160 Ohms vs. 136 Ohms) and slightly increased switching times (20 ms vs. 15 ms) are within acceptable engineering tolerances for most general purpose relay applications.

Frequently Asked Questions (FAQ)

Q: Can the MYQ4Z DC12 directly replace the G2A-434A DC12 without circuit modifications?

A: Electrical substitution is valid. The MYQ4Z DC12 meets all mandatory electrical parameters. However, mechanical substitution requires evaluation of the mounting interface. The G2A-434A DC12 uses socketable plug-in termination while the MYQ4Z DC12 uses through-hole PC pins. Direct socket replacement is not possible without adapter hardware or PCB redesign.

Q: What is the impact of the 20 ms switching time on the MYQ4Z DC12 versus the 15 ms on the G2A-434A DC12?

A: The 5 ms difference in operate and release time is a minor variation typical between relay series. For general purpose switching applications, this difference is generally not significant. Applications with strict timing requirements below 20 ms should be evaluated against specific circuit performance needs.

Q: Does the higher contact current rating (1 A) of the MYQ4Z DC12 affect compatibility?

A: No. Higher contact current rating provides additional design margin and is fully backward compatible. Applications designed for 500 mA operation will function within the MYQ4Z DC12 specifications without modification.

Q: Are there compliance or certification differences between these relays?

A: The MYQ4Z DC12 is RoHS compliant and fully sealed, providing enhanced environmental protection. Both relays share identical MSL rating (1 - Unlimited) and ECCN/HTSUS classifications. The MYQ4Z DC12 offers superior compliance posture for modern manufacturing and environmental standards.

Q: What is the significance of the different contact materials?

A: The G2A-434A DC12 uses Silver Palladium (AgPd) and Gold (Au) contacts, while the MYQ4Z DC12 uses Silver (Ag) and Gold (Au). Both material compositions are suitable for general purpose switching. Contact material selection does not prevent substitution for standard applications.