HC3-H-DC110V-F Equivalent & Substitute Parts

Part Overview

The HC3-H-DC110V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a 3PDT (3 Form C) contact configuration with 110VDC coil voltage and 7A contact rating. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations. The socketable mounting design and plug-in termination style provide flexibility in circuit board integration.

Substiute Parts

HC3-H-DC110V-F

Panasonic Electric WorksIn Stock: 722HC3-H-DC110V-F Datasheet

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PT370110

TE Connectivity Potter & Brumfield RelaysIn Stock: 1202PT370110 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the HC3-H-DC110V-F is determined by the following critical parameters:

• Coil voltage must be 110VDC to ensure proper circuit integration without modification
• Contact form must be 3PDT (3 Form C) to maintain identical switching functionality
• Contact rating must be equal to or greater than 7A to support the same load requirements
• Switching voltage rating must be equal to or greater than 250VAC for equivalent electrical stress tolerance
• Mounting type must be socketable to ensure mechanical compatibility with existing socket infrastructure
• Termination style must support plug-in connection for direct replacement capability
• Coil type must be non-latching to preserve circuit behavior

The PT370110 relay meets all these criteria and is identified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The PT370110 is suitable as a substitute for the HC3-H-DC110V-F based on the following factors:

The PT370110 maintains all critical functional parameters: identical 110VDC coil voltage, 3PDT contact configuration, socketable mounting, and plug-in termination. The substitute provides enhanced electrical performance with 10A contact rating versus 7A, and 400VAC switching voltage versus 250VAC, offering greater margin for load applications.

The PT370110 is classified as active product status, ensuring ongoing availability and supply chain continuity compared to the obsolete HC3-H-DC110V-F. Both components share identical ECCN (EAR99) and HTSUS classifications, and both maintain MSL 1 (Unlimited) moisture sensitivity ratings.

The PT370110 incorporates additional features including mechanical indicator and test button functionality not present in the main part. Coil current is reduced to 6.8 mA from 10 mA, and operate/release times are faster (15 ms/10 ms versus 20 ms/20 ms). Contact material differs (Silver Nickel versus Silver Alloy, Cadmium Free), and operating temperature range is -40°C to 70°C versus -50°C to 70°C.

Frequently Asked Questions (FAQ)

Q: Can the PT370110 directly replace the HC3-H-DC110V-F in existing circuits?

A: Yes. Both relays share identical coil voltage (110VDC), contact form (3PDT), mounting type (socketable), and termination style (plug-in). The PT370110 provides equal or superior electrical performance across all critical parameters.

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

A: The PT370110 offers higher contact rating (10A versus 7A) and switching voltage (400VAC versus 250VAC). Coil current is lower (6.8 mA versus 10 mA), and switching times are faster. Operating temperature range is slightly narrower (-40°C to 70°C versus -50°C to 70°C). Contact material composition differs between the two models.

Q: Are there packaging considerations for substitution?

A: The HC3-H-DC110V-F is supplied in standard packaging, while the PT370110 is supplied in bulk packaging. Both maintain identical MSL 1 (Unlimited) moisture sensitivity ratings, indicating no special storage or handling requirements.

Q: Do both relays comply with the same regulatory standards?

A: Yes. Both components share identical ECCN (EAR99) and HTSUS (8536.49.0075) classifications. The PT370110 is additionally RoHS3 compliant and REACH unaffected.

Q: What is the coil resistance difference, and does it affect circuit design?

A: The PT370110 has 16.1 kOhms coil resistance versus 10 kOhms for the HC3-H-DC110V-F. This difference reflects the lower coil current (6.8 mA versus 10 mA) at the same 110VDC voltage. Circuit designs must account for this resistance variation when calculating coil power dissipation and drive circuit requirements.