HG2-AC6V Equivalent & Substitute Parts

Part Overview

The HG2-AC6V is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 6VAC coil and 20A contact rating. This socketable relay is designed for standard switching applications requiring reliable electromagnetic actuation. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and redesign applications.

Substiute Parts

HG2-AC6V

Panasonic Electric WorksIn Stock: 787HG2-AC6V Datasheet

Current PartRFQ

MY2 AC6 (S)

Omron Automation and SafetyIn Stock: 960MY2 AC6 (S) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HG2-AC6V are identified based on the following critical parameters that determine functional compatibility:

Matching Parameters (Required for Substitution):

• Coil Voltage: 6VAC
• Contact Form: DPDT (2 Form C)
• Mounting Type: Socketable
• Must Operate Voltage: 4.8 VAC
• Must Release Voltage: 1.8 VAC
• Contact Material: Silver or Silver Alloy

Parameters Allowing Variation:

• Contact Rating (Current): The substitute may have a lower current rating if the application does not require the full 20A capacity
• Switching Voltage: Variations within standard industrial ranges are acceptable
• Coil Current: Variations are acceptable provided the driving circuit can supply the required current
• Operating Temperature Range: Wider ranges provide additional operational margin
• Operate/Release Time: Minor variations are acceptable for non-critical timing applications

The MY2 AC6 (S) from Omron Automation and Safety meets all matching parameters and qualifies as a direct substitute, with the primary consideration being its reduced 5A contact rating.

Parameter Comparison

Engineering Selection Recommendations

The MY2 AC6 (S) is an active product from Omron Automation and Safety and serves as the primary substitute for the obsolete HG2-AC6V. Selection of this substitute should be based on the following engineering considerations:

Current Rating Compatibility: The MY2 AC6 (S) has a contact rating of 5A compared to the HG2-AC6V's 20A rating. This substitute is suitable only for applications where the maximum switching current does not exceed 5A. Applications requiring the full 20A capacity cannot use this substitute.

Compliance and Availability: The MY2 AC6 (S) is RoHS Compliant and maintains active production status, ensuring long-term availability and regulatory compliance for new designs and system replacements.

Operational Characteristics: Both relays share identical coil voltage (6VAC), contact form (DPDT), and critical voltage thresholds (4.8VAC operate, 1.8VAC release). The MY2 AC6 (S) operates within a wider temperature range (-55°C ~ 70°C) compared to the HG2-AC6V (-50°C ~ 40°C), providing additional operational margin in extreme environments.

Timing Considerations: The MY2 AC6 (S) has slightly longer operate and release times (20ms each) compared to the HG2-AC6V (15ms each). Applications with strict timing requirements should evaluate this 5ms difference.

Coil Drive Requirements: The MY2 AC6 (S) requires 183mA coil current versus 600mA for the HG2-AC6V. This lower current requirement reduces power consumption and may simplify drive circuit design.

Frequently Asked Questions (FAQ)

Q: Can the MY2 AC6 (S) directly replace the HG2-AC6V in all applications?

A: The MY2 AC6 (S) can replace the HG2-AC6V only in applications where the switching current does not exceed 5A. The HG2-AC6V's 20A rating cannot be matched by this substitute. Verify your application's maximum switching current before substitution.

Q: What are the key differences between these two relays?

A: The primary differences are contact rating (20A vs. 5A), coil current (600mA vs. 183mA), operating temperature range (-50°C~40°C vs. -55°C~70°C), and timing (15ms vs. 20ms). All other critical parameters including coil voltage, contact form, and voltage thresholds are identical.

Q: Are both relays socketable?

A: Yes, both the HG2-AC6V and MY2 AC6 (S) are socketable relays designed for plug-in mounting. The HG2-AC6V uses 0.250" (6.3mm) quick connect termination, while the MY2 AC6 (S) uses standard plug-in termination. Verify socket compatibility before installation.

Q: Is the MY2 AC6 (S) suitable for new designs?

A: Yes. The MY2 AC6 (S) is an active product with RoHS compliance, making it suitable for new designs. However, ensure your application's current requirements do not exceed the 5A contact rating.

Q: What is the impact of the 5ms timing difference?

A: The MY2 AC6 (S) has 5ms longer operate and release times (20ms vs. 15ms). For applications with timing-critical switching sequences, this difference should be evaluated. For standard switching applications, this difference is typically not significant.

Q: Can I use the MY2 AC6 (S) in high-current applications?

A: No. The MY2 AC6 (S) is rated for maximum 5A switching current. Applications requiring 20A switching capability must use a substitute with equivalent or higher current rating. Using an undersized relay in high-current applications will result in contact degradation and premature failure.