HC4E-H-DC6V Equivalent & Substitute Parts

Part Overview

The HC4E-H-DC6V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with 2A contact rating and 6VDC coil voltage. This socketable relay is designed for general switching applications with non-latching operation. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and redesign applications where continued availability is required.

Substiute Parts

HC4E-H-DC6V

Panasonic Electric WorksIn Stock: 894HC4E-H-DC6V Datasheet

Current PartRFQ

MY4 DC6 (S)

Omron Automation and SafetyIn Stock: 1122MY4 DC6 (S) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC4E-H-DC6V is determined by the following critical parameters that must match or exceed the original specification:

Primary Matching Criteria:

• Coil voltage: 6VDC (exact match required)
• Contact form: 4PDT (4 Form C) configuration (exact match required)
• Mounting type: Socketable with plug-in termination (exact match required)
• Coil type: Non-latching operation (exact match required)

Secondary Compatibility Criteria:

• Contact rating current: Substitute must equal or exceed 2A
• Switching voltage: Substitute must support minimum 250VAC
• Coil current: Substitute must be within acceptable drive circuit tolerance
• Operate/release time: Substitute must match or be faster than 20 ms
• Operating temperature range: Substitute must cover or exceed -40°C ~ 60°C
• Coil resistance: Substitute must be within acceptable circuit tolerance

The MY4 DC6 (S) manufactured by Omron Automation and Safety meets all primary matching criteria and exceeds secondary compatibility requirements, qualifying it as a direct substitute for the obsolete HC4E-H-DC6V.

Parameter Comparison

Engineering Selection Recommendations

The MY4 DC6 (S) is the qualified substitute for the obsolete HC4E-H-DC6V based on the following factors:

Product Status: The MY4 DC6 (S) is active in production, ensuring continued availability and supply chain reliability. The HC4E-H-DC6V is obsolete, making substitution necessary for ongoing system support.

Compliance and Certifications: Both parts share identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications. The MY4 DC6 (S) carries RoHS Compliant status, meeting modern environmental and regulatory requirements. Both parts have MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints.

Electrical Performance: The MY4 DC6 (S) matches all critical electrical parameters of the HC4E-H-DC6V while exceeding contact current rating (3A vs. 2A) and switching voltage capability (250VAC/125VDC vs. 250VAC). Operating temperature range is expanded (-55°C ~ 70°C vs. -40°C ~ 60°C), providing greater environmental flexibility.

Physical and Functional Compatibility: Both relays feature identical socketable mounting, plug-in termination, and 4PDT contact configuration, enabling direct socket replacement without circuit board modification.

Frequently Asked Questions (FAQ)

Q: Can the MY4 DC6 (S) be used as a direct replacement for the HC4E-H-DC6V?

A: Yes. The MY4 DC6 (S) is electrically and mechanically compatible with the HC4E-H-DC6V. Both relays feature 6VDC coil voltage, 4PDT contact configuration, socketable mounting with plug-in termination, and identical switching characteristics. The MY4 DC6 (S) can be inserted directly into existing HC4E-H-DC6V sockets without circuit modification.

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

A: The primary differences are contact current rating (MY4 DC6 (S) is rated 3A versus HC4E-H-DC6V at 2A), switching voltage capability (MY4 DC6 (S) supports both 250VAC and 125VDC versus HC4E-H-DC6V at 250VAC only), and operating temperature range (MY4 DC6 (S) spans -55°C ~ 70°C versus HC4E-H-DC6V at -40°C ~ 60°C). These differences represent improvements in the substitute part.

Q: Are there any circuit design considerations when substituting the MY4 DC6 (S) for the HC4E-H-DC6V?

A: No circuit design changes are required. Coil voltage, coil current, coil resistance, and switching timing are matched between the two relays. The higher contact current rating of the MY4 DC6 (S) provides additional safety margin but does not affect circuit operation.

Q: What is the packaging difference between these relays?

A: The HC4E-H-DC6V is packaged individually, while the MY4 DC6 (S) is supplied in bulk packaging. Both are socketable relays with identical physical dimensions and pin configurations, ensuring compatibility in existing socket installations.

Q: Are both relays RoHS compliant?

A: The MY4 DC6 (S) is explicitly RoHS Compliant. The HC4E-H-DC6V, being an obsolete product, does not carry RoHS certification documentation in the provided specifications. For new designs or systems requiring RoHS compliance, the MY4 DC6 (S) is the appropriate selection.

Q: What is the coil resistance tolerance between these relays?

A: Coil resistance is 40 Ohms for the HC4E-H-DC6V and 39.8 Ohms for the MY4 DC6 (S), representing a 0.2 Ohm difference (0.5% variance). This difference is negligible for circuit operation and drive circuit compatibility.