HC4D-HPL-AC100V Equivalent & Substitute Parts

Part Overview

The HC4D-HPL-AC100V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with a 100VAC coil. This through-hole mounted relay is designed for applications requiring 3A contact switching at up to 250VAC. The product is currently obsolete, making identification of compatible substitute components essential for system maintenance, repair, and redesign applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	HC4D-HPL-AC100V
Manufacturer	Panasonic Electric Works
Contact Form	4PDT (4 Form C)
Contact Rating (Current)	3 A
Coil Voltage	100VAC
Switching Voltage (Max)	250VAC
Mounting Type	Through Hole
Termination Style	PC Pin
Coil Type	Non Latching
Operating Temperature Range	-50°C ~ 60°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the HC4D-HPL-AC100V are identified based on the following critical parameters that must align for functional equivalence:

Contact configuration: 4PDT (4 Form C) contact form
Contact current rating: 3 A minimum
Coil type: Non-latching AC coil
Coil voltage: 100VAC nominal (acceptable range: 88VAC to 110VAC operating window)
Switching voltage capability: 250VAC minimum
Mounting: Through-hole with PC pin termination
Relay type: General purpose

The MY4-02-AC100/110 from Omron Automation and Safety meets these substitution criteria. Both relays share identical contact configurations, current ratings, switching voltage specifications, and mounting characteristics. The coil voltage difference (100VAC vs. 110VAC) falls within acceptable operating tolerances, with both units functioning within overlapping must-operate and must-release voltage windows.

Parameter Comparison

Parameter	HC4D-HPL-AC100V (Panasonic)	MY4-02-AC100/110 (Omron)
Contact Form	4PDT (4 Form C)	4PDT (4 Form C)
Contact Rating (Current)	3 A	3 A
Coil Voltage	100VAC	110VAC
Switching Voltage (Max)	250VAC	250VAC, 125VDC
Coil Current	13.2 mA	10 mA
Must Operate Voltage	80 VAC	88 VAC
Must Release Voltage	30 VAC	33 VAC
Operate Time	20 ms	20 ms
Release Time	20 ms	20 ms
Operating Temperature Range	-50°C ~ 60°C	-55°C ~ 70°C
Mounting Type	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin
Coil Type	Non Latching	Non Latching
Contact Material	Silver Nickel (AgNi)	Silver (Ag)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MY4-02-AC100/110 is the qualified substitute for the HC4D-HPL-AC100V based on the following engineering criteria:

Functional equivalence is established through matching contact configuration (4PDT), current rating (3A), and switching voltage capability (250VAC). Both relays operate within compatible voltage windows, with the MY4-02-AC100/110 demonstrating slightly lower coil current (10 mA vs. 13.2 mA) and an extended operating temperature range (-55°C to 70°C vs. -50°C to 60°C).

The MY4-02-AC100/110 holds active product status with RoHS compliance certification, providing supply chain continuity and regulatory alignment for new designs and system updates. The Omron relay is currently in stock with 1052 units available.

Physical compatibility is confirmed through identical through-hole mounting and PC pin termination, enabling direct board-level substitution without mechanical redesign.

Frequently Asked Questions (FAQ)

Q: Can the MY4-02-AC100/110 directly replace the HC4D-HPL-AC100V in existing applications?

A: Yes. Both relays share identical contact configurations (4PDT), current ratings (3A), switching voltages (250VAC), and through-hole PC pin termination. The 10VAC coil voltage difference (100VAC vs. 110VAC) is within acceptable operating tolerances for both units.

Q: What is the significance of the coil voltage difference between 100VAC and 110VAC?

A: The HC4D-HPL-AC100V operates between 80VAC (must-operate) and 30VAC (must-release). The MY4-02-AC100/110 operates between 88VAC and 33VAC. In standard 100VAC supply systems, both relays function within their specified operating windows. The MY4-02-AC100/110 requires slightly higher voltage to operate but provides equivalent performance in typical industrial AC supply environments.

Q: Are there mechanical compatibility concerns when substituting these relays?

A: No. Both relays use through-hole mounting with PC pin termination. Physical footprint and pin configuration are compatible, allowing direct board-level substitution without mechanical modification.

Q: What is the difference in contact material between these relays?

A: The HC4D-HPL-AC100V uses Silver Nickel (AgNi) contacts, while the MY4-02-AC100/110 uses Silver (Ag) contacts. Both materials are suitable for general purpose relay applications with 3A switching at 250VAC. Contact material selection does not affect functional substitution for standard switching applications.

Q: Why is the HC4D-HPL-AC100V marked as obsolete?

A: Panasonic Electric Works has discontinued this product line. The MY4-02-AC100/110 from Omron Automation and Safety is an active product with equivalent specifications, making it the appropriate substitute for maintenance, repair, and redesign applications.

Q: Does the MY4-02-AC100/110 support DC switching in addition to AC?

A: Yes. The MY4-02-AC100/110 is rated for 125VDC maximum switching voltage in addition to 250VAC. The HC4D-HPL-AC100V specification provided does not include DC switching capability. This represents an enhanced capability of the substitute part.

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