Equivalent & Substitute Parts for JS1F-B-24V-F

Part Overview

The JS1F-B-24V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a Single Pole Double Throw (SPDT) contact configuration with a 24VDC coil. This through-hole mounted relay is designed for applications requiring 10A switching capacity at 250VAC or 100VDC maximum. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and new design implementations where this relay specification remains applicable.

Substiute Parts

JS1F-B-24V-F

Panasonic Electric WorksIn Stock: 1035JS1F-B-24V-F Datasheet

Current PartRFQ

ALQ124

Panasonic Electric WorksIn Stock: 7726ALQ124 Datasheet

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J107F1CS1224VDC.36

CIT Relay and SwitchIn Stock: 41987J107F1CS1224VDC.36 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the JS1F-B-24V-F is determined by the following critical parameters:

• Coil Voltage: 24VDC (mandatory match)
• Contact Form: SPDT (1 Form C) configuration (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Termination Style: PC Pin (mandatory match)
• Contact Rating: Minimum 10A capability
• Switching Voltage: Minimum 250VAC or 100VDC capability
• Operating Temperature Range: Compatibility with -40°C ~ 85°C or wider range
• Coil Type: Non Latching (mandatory match)

Two substitute parts meet these criteria with varying degrees of parameter alignment:

ALQ124 (Panasonic Electric Works): Active product with identical coil voltage, contact form, mounting type, and termination style. Contact rating is reduced to 5A, and switching voltage capability is lower (250VAC, 30VDC max). Suitable for applications with reduced current requirements.

J107F1CS1224VDC.36 (CIT Relay and Switch): Active product with identical coil voltage, contact form, mounting type, and termination style. Contact rating exceeds the original specification at 12A, and switching voltage capability is higher (380VAC, 110VDC max). Provides enhanced performance margins.

Parameter Comparison

Engineering Selection Recommendations

J107F1CS1224VDC.36 is the primary substitute for direct replacement applications. This CIT Relay and Switch component maintains identical coil voltage, contact form, mounting type, and termination style. The contact rating of 12A exceeds the original 10A specification, providing operational margin. Switching voltage capability (380VAC, 110VDC max) surpasses the original specification. The extended operating temperature range (-55°C ~ 125°C) accommodates broader environmental conditions. Coil insulation Class F provides enhanced thermal performance compared to Class B. The product is active with full RoHS compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance.

ALQ124 serves as an alternative for applications with reduced current requirements below 5A. This Panasonic Electric Works product maintains identical coil voltage, contact form, mounting type, and termination style as the original. However, the 5A contact rating is insufficient for the original 10A specification. Switching voltage capability (250VAC, 30VDC max) is reduced compared to the original. Operate and release times are doubled (20 ms each). The product is active with ROHS3 compliance and REACH unaffected status. This substitute is applicable only when circuit requirements permit reduced current handling.

Frequently Asked Questions (FAQ)

Q: Can ALQ124 replace JS1F-B-24V-F in all applications?

A: No. ALQ124 has a maximum contact rating of 5A, while JS1F-B-24V-F is rated for 10A. ALQ124 is suitable only for applications requiring 5A or less. Additionally, ALQ124 switching voltage capability (250VAC, 30VDC max) is lower than the original specification.

Q: What are the key differences between J107F1CS1224VDC.36 and the original JS1F-B-24V-F?

A: J107F1CS1224VDC.36 maintains all critical parameters: 24VDC coil voltage, SPDT contact form, through-hole mounting, and PC pin termination. Differences include higher contact rating (12A vs 10A), higher switching voltage capability (380VAC, 110VDC vs 250VAC, 100VDC), faster release time (5ms vs 10ms), extended operating temperature range (-55°C ~ 125°C vs -40°C ~ 85°C), and Class F coil insulation (vs Class B). These differences represent performance enhancements suitable for direct replacement.

Q: Are there packaging differences between the substitute parts?

A: Yes. JS1F-B-24V-F uses standard packaging. ALQ124 is packaged in boxes. J107F1CS1224VDC.36 is packaged in tubes. Packaging differences do not affect electrical or mechanical compatibility but may influence procurement and handling procedures.

Q: What is the impact of different contact materials on substitution?

A: JS1F-B-24V-F and J107F1CS1224VDC.36 both use Silver Tin Oxide (AgSnO) contact material. ALQ124 uses Silver Nickel (AgNi). Contact material differences affect contact resistance, wear characteristics, and suitability for specific load types. For direct replacement, J107F1CS1224VDC.36 with matching AgSnO material is preferred.

Q: Are all substitute parts RoHS compliant?

A: Yes. JS1F-B-24V-F is RoHS Compliant. ALQ124 is ROHS3 Compliant. J107F1CS1224VDC.36 is RoHS Compliant. All parts meet current RoHS requirements.

Q: What is the significance of the extended operating temperature range in J107F1CS1224VDC.36?

A: J107F1CS1224VDC.36 operates from -55°C to 125°C, compared to -40°C to 85°C for the original. This extended range accommodates applications in more extreme thermal environments and provides additional operational margin for standard temperature applications.