HC4D-HTM-DC100V Equivalent & Substitute Parts

Part Overview

The HC4D-HTM-DC100V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with 100VDC coil voltage and 3A contact rating. This relay is designed for chassis mount applications with plug-in termination. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance, repair, and redesign applications.

Substiute Parts

HC4D-HTM-DC100V

Panasonic Electric WorksIn Stock: 735HC4D-HTM-DC100V Datasheet

Current PartRFQ

LY4F DC100/110

Omron Automation and SafetyIn Stock: 1072LY4F DC100/110 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC4D-HTM-DC100V is determined by the following critical parameters:

Primary Substitution Criteria:

• Contact form must be 4PDT (4 Form C) to maintain circuit switching capability
• Coil voltage must be compatible with 100VDC nominal operation (acceptable range: 88VDC to 110VDC based on must-operate and must-release specifications)
• Contact rating must support minimum 3A switching current
• Mounting type must be chassis mount with compatible termination
• Coil type must be non-latching for equivalent functional behavior

Secondary Compatibility Factors:

• Switching voltage rating must support 250VAC maximum
• Operating temperature range should encompass application requirements
• Plug-in termination ensures mechanical compatibility with existing sockets

The LY4F DC100/110 from Omron Automation and Safety meets these substitution criteria through equivalent contact configuration, compatible coil voltage range, and superior contact rating.

Parameter Comparison

Engineering Selection Recommendations

The LY4F DC100/110 is a direct functional substitute for the HC4D-HTM-DC100V based on the following engineering factors:

Functional Equivalence: Both relays provide identical 4PDT contact configuration and non-latching coil operation, ensuring equivalent circuit switching behavior in general purpose relay applications.

Coil Voltage Compatibility: The 110VDC coil voltage of the LY4F DC100/110 operates within the acceptable voltage window established by the HC4D-HTM-DC100V specifications (must-operate at 80VDC, must-release at 10VDC). The 10VDC differential between nominal voltages is within standard industrial tolerance for relay coil operation.

Contact Rating Enhancement: The LY4F DC100/110 provides 10A contact rating compared to the 3A rating of the original part, offering improved current handling capacity without compromising compatibility.

Product Status Advantage: The LY4F DC100/110 is active in production, ensuring long-term availability and supply chain reliability compared to the obsolete HC4D-HTM-DC100V.

Compliance Certification: Both parts carry identical ECCN (EAR99) classification. The LY4F DC100/110 includes RoHS compliance certification, meeting modern regulatory requirements.

Temperature Range Consideration: The LY4F DC100/110 operates within -25°C to 40°C, which is narrower than the original -50°C to 70°C range. Applications requiring operation below -25°C or above 40°C require verification of environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the LY4F DC100/110 directly replace the HC4D-HTM-DC100V in existing applications?

A: Yes, for applications operating within the -25°C to 40°C temperature range. Both relays share identical 4PDT contact configuration, non-latching coil type, and compatible coil voltage operation. The plug-in termination style ensures mechanical compatibility with existing relay sockets. Verify that your application temperature requirements fall within the LY4F DC100/110 operating range.

Q: What is the significance of the 10VDC coil voltage difference?

A: The HC4D-HTM-DC100V operates at 100VDC nominal, while the LY4F DC100/110 operates at 110VDC nominal. This 10VDC difference is within acceptable industrial relay operating margins. The LY4F DC100/110 must-operate voltage (88VDC) and must-release voltage (11VDC) remain compatible with standard 100VDC supply circuits.

Q: Why does the LY4F DC100/110 have higher contact rating (10A vs 3A)?

A: The higher contact rating provides enhanced current-carrying capacity. This is a performance advantage that does not affect substitution compatibility. Applications requiring only 3A operation will function correctly with the higher-rated substitute.

Q: Are there packaging differences between these relays?

A: The HC4D-HTM-DC100V uses 14-pin plug-in termination, while the LY4F DC100/110 uses standard plug-in termination. Both are chassis mount configurations. Verify socket compatibility before installation.

Q: What compliance certifications apply to the LY4F DC100/110?

A: The LY4F DC100/110 carries EAR99 ECCN classification (identical to the original part) and includes RoHS compliance certification, meeting current regulatory standards for electronic components.

Q: How do the switching times compare?

A: The HC4D-HTM-DC100V operates at 20ms for both operate and release times, while the LY4F DC100/110 operates at 25ms. This 5ms difference is negligible for general purpose relay applications but should be verified for time-critical switching requirements.