HC4ED-H-DC12V Equivalent & Substitute Parts

Part Overview

The HC4ED-H-DC12V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with 1 A contact rating and 12VDC coil voltage. This socketable relay is designed for standard switching applications requiring multiple independent circuits. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

HC4ED-H-DC12V

Panasonic Electric WorksIn Stock: 1031HC4ED-H-DC12V Datasheet

Current PartRFQ

MY4 DC12 (S)

Omron Automation and SafetyIn Stock: 1740MY4 DC12 (S) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The MY4 DC12 (S) manufactured by Omron Automation and Safety qualifies as a substitute for the HC4ED-H-DC12V based on the following critical parameters:

Matching parameters: 12VDC coil voltage, 4PDT contact configuration, 75 mA coil current, 160 Ohms coil resistance, 9.6 VDC must operate voltage, 1.2 VDC must release voltage, 20 ms operate time, 20 ms release time, socketable mounting type, and plug-in termination style.

Differing parameters: The MY4 DC12 (S) provides 3 A contact rating (versus 1 A for the HC4ED-H-DC12V) and supports 250VAC and 125VDC switching voltage (versus 250VAC only). The MY4 DC12 (S) operates across -55°C ~ 70°C (wider range than -40°C ~ 60°C). These differences represent enhanced or equivalent capabilities suitable for direct substitution in applications originally designed for the HC4ED-H-DC12V.

Parameter Comparison

Engineering Selection Recommendations

The MY4 DC12 (S) is the qualified substitute for the HC4ED-H-DC12V. Selection is based on the following factors:

The HC4ED-H-DC12V is obsolete, necessitating replacement with an active product. The MY4 DC12 (S) maintains identical electrical characteristics for coil operation and switching timing, ensuring functional compatibility in existing circuit designs. The higher contact current rating (3 A versus 1 A) and extended operating temperature range provide enhanced performance margins without introducing incompatibility. The MY4 DC12 (S) is RoHS compliant, meeting current regulatory requirements. Both relays share identical socketable mounting and plug-in termination, enabling direct mechanical replacement without circuit board modifications.

Frequently Asked Questions (FAQ)

Q: Can the MY4 DC12 (S) directly replace the HC4ED-H-DC12V in existing applications?

A: Yes. Both relays feature identical 12VDC coil voltage, 4PDT contact configuration, coil current, coil resistance, switching timing, and socketable mounting. The MY4 DC12 (S) can be inserted into the same socket without circuit modifications.

Q: Why does the MY4 DC12 (S) have a higher contact current rating (3 A versus 1 A)?

A: The MY4 DC12 (S) is rated for higher switching current capacity. This represents an enhancement that does not affect compatibility. Applications designed for 1 A operation will function within the MY4 DC12 (S) specifications.

Q: Are there differences in switching voltage capability?

A: The HC4ED-H-DC12V switches 250VAC maximum. The MY4 DC12 (S) switches 250VAC and 125VDC maximum. Both support the original 250VAC specification, ensuring compatibility for AC switching applications.

Q: What is the operating temperature difference?

A: The HC4ED-H-DC12V operates from -40°C to 60°C. The MY4 DC12 (S) operates from -55°C to 70°C. The wider range of the MY4 DC12 (S) provides additional environmental tolerance without affecting performance in the original temperature range.

Q: Is the MY4 DC12 (S) RoHS compliant?

A: Yes, the MY4 DC12 (S) is RoHS compliant. The HC4ED-H-DC12V compliance status is not specified in available documentation.

Q: Are there packaging differences?

A: The HC4ED-H-DC12V is available in standard packaging. The MY4 DC12 (S) is supplied in bulk packaging. Both are socketable relays with identical pin configurations and mounting requirements.