HC3-H-DC12V-F Equivalent & Substitute Parts

Part Overview

The HC3-H-DC12V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a 3PDT (3 Form C) contact configuration with a 12VDC coil. This socketable relay is designed for applications requiring switching of up to 7A at 250VAC maximum. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and redesign applications where continued availability is required.

Substiute Parts

HC3-H-DC12V-F

Panasonic Electric WorksIn Stock: 1087HC3-H-DC12V-F Datasheet

Current PartRFQ

LY3-DC12

Omron Automation and SafetyIn Stock: 904LY3-DC12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC3-H-DC12V-F is determined by the following critical parameters:

• Coil Voltage: Must be 12VDC to maintain compatibility with existing control circuits
• Contact Form: Must be 3PDT (3 Form C) to preserve switching functionality
• Mounting Type: Must be socketable to ensure mechanical fit in existing relay sockets
• Termination Style: Must be plug-in to maintain electrical connection compatibility
• Must Operate and Release Voltages: Must match or be compatible with 9.6 VDC operate and 1.2 VDC release thresholds
• Contact Rating: Minimum 7A at 250VAC to meet or exceed switching capacity requirements

The LY3-DC12 from Omron Automation and Safety meets all critical substitution criteria, providing equivalent functionality with enhanced current rating and active product status.

Parameter Comparison

Engineering Selection Recommendations

The LY3-DC12 is a direct functional substitute for the HC3-H-DC12V-F. Both relays share identical coil voltage, contact form, mounting configuration, and voltage threshold specifications. The LY3-DC12 provides superior current handling capacity (10A versus 7A), expanded switching voltage range including 125VDC capability, and active product status ensuring long-term availability and supply chain continuity.

The LY3-DC12 is RoHS Compliant and REACH Unaffected, meeting modern regulatory requirements. Applications operating within the LY3-DC12 temperature range of -25°C to 55°C will experience no functional degradation. Applications requiring the full -50°C to 70°C range of the original HC3-H-DC12V-F should evaluate alternative substitutes or implement thermal management strategies.

Frequently Asked Questions (FAQ)

Q: Can the LY3-DC12 directly replace the HC3-H-DC12V-F in existing circuits?

A: Yes. Both relays feature identical 12VDC coil voltage, 3PDT contact configuration, socketable mounting, and plug-in termination. The LY3-DC12 will function in any application designed for the HC3-H-DC12V-F without circuit modification.

Q: What is the difference in current rating between these relays?

A: The HC3-H-DC12V-F is rated for 7A maximum contact current, while the LY3-DC12 is rated for 10A. The LY3-DC12 provides additional current capacity and is suitable for applications requiring higher switching loads.

Q: Are there temperature range considerations for substitution?

A: The HC3-H-DC12V-F operates from -50°C to 70°C, while the LY3-DC12 operates from -25°C to 55°C. For applications requiring operation below -25°C or above 55°C, verify that the LY3-DC12 meets your thermal requirements or identify alternative substitutes.

Q: Do both relays use the same socket?

A: Yes. Both the HC3-H-DC12V-F and LY3-DC12 are socketable relays with plug-in termination, designed for compatibility with standard relay sockets supporting 3PDT configurations.

Q: What is the coil current difference between these relays?

A: The HC3-H-DC12V-F draws 75 mA coil current, while the LY3-DC12 draws 112 mA. Control circuits must supply sufficient current capacity for the LY3-DC12 if substituting in existing designs.

Q: Are there switching speed differences?

A: The HC3-H-DC12V-F operates and releases in 20 ms, while the LY3-DC12 operates and releases in 25 ms. For time-critical applications, verify that the 5 ms difference does not impact system performance.

Q: What compliance certifications apply to the LY3-DC12?

A: The LY3-DC12 is RoHS Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components.