HC4ED-HP-DC24V Equivalent & Substitute Parts

Part Overview

The HC4ED-HP-DC24V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with 1A contact rating and 24VDC coil voltage. This through-hole mounted relay is designed for industrial control and switching applications requiring multiple independent circuits. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and redesign applications.

Substiute Parts

HC4ED-HP-DC24V

Panasonic Electric WorksIn Stock: 1089HC4ED-HP-DC24V Datasheet

Current PartRFQ

MYQ4Z-02 DC24

Omron Automation and SafetyIn Stock: 845MYQ4Z-02 DC24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC4ED-HP-DC24V is determined by strict equivalence across the following critical parameters:

• Coil Voltage: 24VDC (exact match required)
• Contact Form: 4PDT (4 Form C) configuration (exact match required)
• Contact Rating: 1A minimum (equal or higher acceptable)
• Mounting Type: Through Hole with PC Pin termination (exact match required)
• Coil Resistance: 650 Ohms (exact match required)
• Coil Type: Non Latching (exact match required)
• Operating Temperature Range: Must encompass or match the original specification

The MYQ4Z-02 DC24 from Omron Automation and Safety meets all substitution criteria. Both relays share identical coil voltage, contact configuration, current rating, mounting method, coil resistance, and coil type. Operating parameters including must-operate voltage (19.2 VDC), must-release voltage (2.4 VDC), and switching times (20 ms operate/release) are identical.

Parameter Comparison

Engineering Selection Recommendations

The MYQ4Z-02 DC24 is a direct functional equivalent to the obsolete HC4ED-HP-DC24V. Selection between these parts should be based on the following factors:

Product Status: The HC4ED-HP-DC24V is obsolete. The MYQ4Z-02 DC24 carries active product status from Omron Automation and Safety, ensuring continued availability and manufacturing support.

Compliance & Certifications: The MYQ4Z-02 DC24 is RoHS Compliant and REACH Unaffected, providing regulatory compliance for applications subject to environmental directives. Both parts carry identical ECCN (EAR99) and HTSUS classifications.

Seal Rating: The MYQ4Z-02 DC24 features sealed construction (Fully Sealed), providing enhanced protection against environmental contamination compared to the original part specification.

Operating Temperature: The MYQ4Z-02 DC24 extends the lower operating temperature limit to -55°C, providing broader environmental compatibility while maintaining the upper limit at 60°C.

Electrical Equivalence: All critical electrical parameters—coil voltage, contact configuration, current rating, coil resistance, and switching characteristics—are identical, ensuring direct circuit compatibility without modification.

Frequently Asked Questions (FAQ)

Q: Can the MYQ4Z-02 DC24 be used as a direct replacement for the HC4ED-HP-DC24V without circuit modification?

A: Yes. Both relays share identical coil voltage (24VDC), contact configuration (4PDT), current rating (1A), coil resistance (650 Ohms), and switching characteristics (20 ms operate/release times). The through-hole PC pin termination is identical, allowing direct substitution in existing PCB layouts.

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

A: The primary differences are product status and environmental specifications. The HC4ED-HP-DC24V is obsolete; the MYQ4Z-02 DC24 is active. The Omron part features sealed construction and extends the lower operating temperature to -55°C. The Omron part also carries RoHS Compliance and REACH Unaffected certifications.

Q: Are the contact materials compatible?

A: Yes. Both relays use precious metal contact materials (silver and gold). The HC4ED-HP-DC24V specifies Silver Nickel and Gold; the MYQ4Z-02 DC24 specifies Silver and Gold. Both material sets are suitable for general purpose switching applications at the specified 1A current rating.

Q: What is the switching voltage capability of each relay?

A: The HC4ED-HP-DC24V is rated for 250VAC maximum. The MYQ4Z-02 DC24 is rated for 250VAC and 125VDC maximum, providing broader voltage compatibility while maintaining the same AC switching capability.

Q: Are there packaging differences between these parts?

A: The HC4ED-HP-DC24V is specified with "-" packaging notation. The MYQ4Z-02 DC24 is supplied in Bulk packaging. Both parts use identical through-hole PC pin termination suitable for standard PCB assembly processes.

Q: What is the coil current draw for each relay?

A: The HC4ED-HP-DC24V draws 37 mA; the MYQ4Z-02 DC24 draws 36.9 mA. These values are equivalent for practical circuit design purposes, with negligible difference in power supply requirements.

Q: Can the MYQ4Z-02 DC24 operate in the same temperature range as the original part?

A: The MYQ4Z-02 DC24 operates from -55°C to 60°C, which encompasses the original specification of -40°C to 60°C. The Omron part provides extended low-temperature capability, making it suitable for applications requiring broader environmental performance.