HC2E-HTM-AC120V-F Equivalent & Substitute Parts

Part Overview

The HC2E-HTM-AC120V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 120VAC coil and 3A contact rating. This relay is designed for chassis mount applications with plug-in, 8-pin termination. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance, repair, and redesign applications.

Substiute Parts

HC2E-HTM-AC120V-F

Panasonic Electric WorksIn Stock: 1002HC2E-HTM-AC120V-F Datasheet

Current PartRFQ

LY2F-AC110/120

Omron Automation and SafetyIn Stock: 2262LY2F-AC110/120 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC2E-HTM-AC120V-F is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Coil voltage: 120VAC
• Contact form: DPDT (2 Form C)
• Coil type: Non Latching
• Must operate voltage: 96 VAC minimum
• Must release voltage: 36 VAC maximum
• Mounting type: Chassis Mount
• Termination style: Plug In configuration

Allowable Variation Parameters:

• Contact rating (current): May exceed 3A (higher current rating is acceptable for lower-current applications)
• Switching voltage: May equal or exceed 250VAC
• Operate/Release time: May vary within acceptable control system tolerances
• Operating temperature range: May be narrower than the original specification
• Coil current: May vary based on coil resistance differences
• Contact material composition: May differ while maintaining electrical performance

The LY2F-AC110/120 substitute meets all mandatory compatibility parameters while providing enhanced current rating (10A vs. 3A) and maintains equivalent coil voltage, contact form, and switching characteristics.

Parameter Comparison

Engineering Selection Recommendations

The LY2F-AC110/120 is a suitable substitute for the obsolete HC2E-HTM-AC120V-F based on the following engineering criteria:

Functional Equivalence: Both relays provide identical DPDT switching functionality with 120VAC coil excitation, meeting the core control requirements of the original application.

Electrical Compatibility: The substitute maintains equivalent coil voltage, contact form, must-operate and must-release voltage thresholds, and switching voltage ratings. The higher contact current rating (10A vs. 3A) provides margin for the original 3A application without performance degradation.

Operational Characteristics: Operate and release times differ by 5 milliseconds (25ms vs. 20ms). This variance is acceptable for general purpose relay applications unless the original system has critical timing dependencies below 5ms tolerance.

Temperature Consideration: The LY2F-AC110/120 operates within -25°C to 55°C, which is narrower than the original -40°C to 60°C range. Applications requiring operation below -25°C or above 55°C require alternative substitutes.

Compliance Status: The substitute is RoHS compliant and currently in active production, ensuring long-term availability and supply chain stability compared to the obsolete original component.

Coil Resistance Difference: The substitute exhibits lower coil resistance (4.43 kOhms vs. 10.084 kOhms), resulting in lower coil current draw (9.2 mA vs. 11.9 mA). This reduces power consumption and heat generation in the control circuit.

Frequently Asked Questions (FAQ)

Q: Can the LY2F-AC110/120 directly replace the HC2E-HTM-AC120V-F in existing applications?

A: Yes, for applications operating within the -25°C to 55°C temperature range. The substitute provides equivalent DPDT switching with 120VAC coil excitation and maintains all critical voltage thresholds. Physical mounting and termination compatibility must be verified for the specific application.

Q: What is the significance of the higher 10A contact rating on the substitute?

A: The LY2F-AC110/120 is rated for 10A continuous contact current, compared to the original 3A rating. This higher rating provides design margin and allows the relay to handle transient current spikes without contact degradation. For applications requiring only 3A switching, the substitute operates well within its rated capacity.

Q: How do the 5-millisecond differences in operate and release times affect system performance?

A: The LY2F-AC110/120 operates and releases 5 milliseconds slower than the original (25ms vs. 20ms). For general purpose control applications, this variance is typically negligible. Applications with critical timing requirements below 5ms tolerance should evaluate alternative substitutes or confirm system tolerance to the longer switching times.

Q: Is the lower coil current of the substitute an advantage?

A: Yes. The substitute draws 9.2 mA compared to the original 11.9 mA, reducing power consumption and heat dissipation in the control circuit. This lower coil current results from the substitute's lower coil resistance (4.43 kOhms vs. 10.084 kOhms) while maintaining equivalent 120VAC coil voltage operation.

Q: What are the temperature operating range implications?

A: The substitute operates from -25°C to 55°C, which is narrower than the original -40°C to 60°C specification. Applications requiring operation below -25°C or above 55°C must use alternative substitutes. Verify the actual operating environment of your application before selection.

Q: Are there packaging or termination differences between these relays?

A: The original HC2E-HTM-AC120V-F specifies 8-pin plug-in termination, while the LY2F-AC110/120 specifies plug-in termination without pin count specification in the provided data. Physical pin configuration and socket compatibility must be verified for the specific application before installation.

Q: Does the substitute meet modern compliance standards?

A: Yes. The LY2F-AC110/120 is RoHS compliant and currently in active production. The original HC2E-HTM-AC120V-F is obsolete. The substitute ensures compliance with current environmental regulations and provides access to current manufacturing and supply chain support.