HC4D-HP-AC12V Equivalent & Substitute Parts

Part Overview

The HC4D-HP-AC12V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with a 12VAC coil and 3A contact rating. This through-hole mounted relay is designed for general purpose switching applications requiring multiple independent circuits. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

HC4D-HP-AC12V

Panasonic Electric WorksIn Stock: 789HC4D-HP-AC12V Datasheet

Current PartRFQ

MY4-02 AC12

Omron Automation and SafetyIn Stock: 749MY4-02 AC12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC4D-HP-AC12V is determined by strict equivalence across the following critical parameters:

• Coil voltage: 12VAC
• Contact configuration: 4PDT (4 Form C)
• Contact current rating: 3 A minimum
• Switching voltage capability: 250VAC or higher
• Mounting type: Through hole
• Termination style: PC pin
• Coil operation characteristics: Must operate voltage ≤ 9.6 VAC, must release voltage ≤ 3.6 VAC
• Switching speed: Operate and release times of 20 ms
• Operating temperature range: Minimum -50°C to 70°C coverage
• Coil type: Non latching

The MY4-02 AC12 manufactured by Omron Automation and Safety meets all substitution criteria for the HC4D-HP-AC12V.

Parameter Comparison

Engineering Selection Recommendations

The MY4-02 AC12 is the direct substitute for the HC4D-HP-AC12V. The Omron part maintains functional equivalence across all critical electrical and mechanical parameters. The MY4-02 AC12 offers the additional advantage of active product status, ensuring ongoing availability and supply chain continuity. The MY4-02 AC12 is RoHS compliant and REACH unaffected, meeting current regulatory requirements for new designs and replacements. The lower coil current (91 mA versus 100 mA) in the MY4-02 AC12 represents a minor operational improvement without affecting switching performance or contact ratings.

Frequently Asked Questions (FAQ)

Q: Can the MY4-02 AC12 be used as a direct replacement for the HC4D-HP-AC12V?

A: Yes. Both relays share identical coil voltage (12VAC), contact configuration (4PDT), current rating (3A), switching voltage capability (250VAC minimum), mounting type (through hole), and termination style (PC pin). Operating characteristics including must-operate voltage, must-release voltage, and switching times are equivalent.

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

A: The HC4D-HP-AC12V uses Silver Nickel (AgNi) contacts, while the MY4-02 AC12 uses Silver (Ag) contacts. Both materials are suitable for general purpose switching applications at the specified 3A rating and 250VAC switching voltage.

Q: Does the lower coil current of the MY4-02 AC12 affect performance?

A: No. The MY4-02 AC12 coil current of 91 mA versus the HC4D-HP-AC12V at 100 mA does not affect switching performance, contact ratings, or operating characteristics. Both relays meet identical must-operate and must-release voltage specifications.

Q: Are there packaging differences between these parts?

A: The HC4D-HP-AC12V is supplied in standard packaging, while the MY4-02 AC12 is supplied in bulk packaging. Both are through-hole mounted components with PC pin termination suitable for PCB assembly.

Q: What is the operating temperature range difference?

A: The HC4D-HP-AC12V operates from -50°C to 70°C, while the MY4-02 AC12 operates from -55°C to 70°C. The MY4-02 AC12 provides extended low-temperature capability, making it suitable for applications requiring operation below -50°C.