HC4ED-PL-DC48V Equivalent & Substitute Parts

Part Overview

The HC4ED-PL-DC48V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with a 48VDC coil. This through-hole mounted relay is rated for 1A contact current at 250VAC maximum switching voltage and includes a lighted indicator. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and redesign applications.

Substiute Parts

HC4ED-PL-DC48V

Panasonic Electric WorksIn Stock: 699HC4ED-PL-DC48V Datasheet

Current PartRFQ

MY4Z-02-DC48

Omron Automation and SafetyIn Stock: 911MY4Z-02-DC48 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC4ED-PL-DC48V is determined by strict equivalence in the following critical parameters:

Mandatory Matching Parameters:

• Coil Voltage: 48VDC
• Contact Form: 4PDT (4 Form C)
• Coil Type: Non Latching
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Coil Current: 18.5 mA
• Must Operate Voltage: 38.4 VDC
• Must Release Voltage: 4.8 VDC
• Operate Time: 20 ms
• Release Time: 20 ms
• Coil Resistance: 2.6 kOhms

Allowable Parameter Variations:

• Contact Rating (Current): May be equal to or greater than 1 A
• Switching Voltage: May be equal to or greater than 250VAC
• Operating Temperature Range: May be equal to or wider than -40°C ~ 60°C
• Contact Material: May differ while maintaining electrical performance

The MY4Z-02-DC48 manufactured by Omron Automation and Safety meets all mandatory matching parameters and exceeds the contact current rating (3 A vs. 1 A), making it a direct substitute for the obsolete HC4ED-PL-DC48V.

Parameter Comparison

Engineering Selection Recommendations

The MY4Z-02-DC48 is the qualified substitute for the obsolete HC4ED-PL-DC48V based on the following engineering criteria:

Functional Equivalence: Both relays share identical coil voltage, contact configuration, coil current, switching characteristics, and timing parameters. The MY4Z-02-DC48 maintains full electrical and mechanical compatibility with the original design.

Performance Enhancement: The MY4Z-02-DC48 provides superior contact current rating (3 A vs. 1 A) and extended operating temperature range (-55°C ~ 70°C vs. -40°C ~ 60°C), offering improved reliability margins in the same form factor.

Compliance Status: The MY4Z-02-DC48 is an active product with RoHS compliance certification, ensuring long-term availability and regulatory alignment for new designs and system updates.

Thermal and Environmental Capability: The wider operating temperature range of the MY4Z-02-DC48 accommodates more demanding environmental conditions while maintaining the same through-hole PC pin termination for direct board-level integration.

Frequently Asked Questions (FAQ)

Q: Can the MY4Z-02-DC48 directly replace the HC4ED-PL-DC48V without circuit modifications?

A: Yes. The MY4Z-02-DC48 is a direct substitute. Both relays have identical coil voltage (48VDC), coil current (18.5 mA), contact form (4PDT), timing parameters (20 ms operate and release), and PC pin termination. No circuit modifications are required.

Q: Why does the MY4Z-02-DC48 have a higher contact current rating (3 A vs. 1 A)?

A: The higher contact current rating represents an enhanced capability of the substitute part. This does not affect compatibility; it simply means the MY4Z-02-DC48 can safely handle higher switching currents than the original specification. Existing circuits operating at 1 A will function identically.

Q: Are there differences in contact material between these relays?

A: Yes. The HC4ED-PL-DC48V uses Silver Nickel (AgNi) and Gold (Au) contacts, while the MY4Z-02-DC48 uses Silver (Ag) contacts. Both materials are suitable for general purpose relay applications at the specified switching voltages and currents. Contact material selection does not affect functional substitution in this application.

Q: What is the significance of the extended operating temperature range in the MY4Z-02-DC48?

A: The MY4Z-02-DC48 operates from -55°C to 70°C, compared to -40°C to 60°C for the HC4ED-PL-DC48V. This wider range provides additional thermal margin and allows deployment in more demanding environmental conditions. For applications within the original temperature range, both relays perform identically.

Q: Is the RoHS compliance status of the MY4Z-02-DC48 important for substitution?

A: RoHS compliance is relevant for new designs and systems subject to regulatory requirements. The MY4Z-02-DC48 is RoHS compliant, making it suitable for applications requiring environmental and regulatory adherence. The original HC4ED-PL-DC48V status is not specified.

Q: Are the coil resistance and electrical characteristics identical?

A: Yes. Both relays have 2.6 kOhms coil resistance, 18.5 mA coil current, 38.4 VDC must-operate voltage, and 4.8 VDC must-release voltage. These parameters are identical, ensuring equivalent electrical behavior in the circuit.

Q: Can the MY4Z-02-DC48 be used in existing PCB designs without layout changes?

A: Yes. Both relays use through-hole PC pin termination and share the same contact form (4PDT). Existing PCB layouts designed for the HC4ED-PL-DC48V will accommodate the MY4Z-02-DC48 without modification, provided pin spacing and footprint dimensions are compatible.