JS1F-5V-F General Purpose Relay SPDT Equivalent & Substitute Parts

Part Overview

The JS1F-5V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a single pole double throw (SPDT) contact configuration with a 5VDC coil. This through-hole mounted relay is rated for 10A switching capacity and is designed for non-latching applications. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repairs, and new designs requiring compatible functionality.

Substiute Parts

JS1F-5V-F

Panasonic Electric WorksIn Stock: 1097JS1F-5V-F Datasheet

Current PartRFQ

ALQ105

Panasonic Electric WorksIn Stock: 7111ALQ105 Datasheet

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J107F1CS125VDC.36

CIT Relay and SwitchIn Stock: 4573J107F1CS125VDC.36 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS1F-5V-F is determined by the following critical parameters:

• Coil Voltage: Must be 5VDC to ensure direct compatibility with existing circuit designs
• Contact Form: Must be SPDT (1 Form C) to maintain switching functionality
• Mounting Type: Must be Through Hole to fit existing PCB layouts
• Termination Style: Must be PC Pin for direct board connection
• Coil Type: Must be Non Latching to match operational behavior

Secondary parameters that influence substitution suitability include contact rating, switching voltage capability, operating temperature range, and compliance certifications. Parts meeting the critical parameters are considered functionally equivalent, though differences in secondary parameters may affect performance in specific applications.

Parameter Comparison

Engineering Selection Recommendations

ALQ105: This Panasonic Electric Works substitute maintains the same manufacturer lineage and shares identical coil voltage, contact form, and mounting specifications. The ALQ105 is currently in active production status, ensuring long-term availability. However, the contact rating is reduced to 5A compared to the 10A rating of the JS1F-5V-F, limiting its application to lower current switching scenarios. The ALQ105 features an extended operating temperature range (-40°C ~ 85°C) and holds ROHS3 compliance with additional certifications (CQC, cURuus, VDE). Selection of ALQ105 is appropriate for applications where the 5A current limit is acceptable and extended temperature operation is beneficial.

J107F1CS125VDC.36: This CIT Relay and Switch substitute exceeds the current rating of the main part at 12A and provides superior switching voltage capability (380VAC, 110VDC). The J107F1CS125VDC.36 maintains identical coil voltage, contact form, and mounting type. This part is in active production and offers an extended operating temperature range (-55°C ~ 125°C) with full sealing (Sealed - Fully) and Class F coil insulation. The contact material differs (Silver Tin Oxide, matching the main part) and coil resistance is nearly identical at 70 Ohms. Selection of J107F1CS125VDC.36 is appropriate for applications requiring higher current capacity, extended temperature operation, or enhanced switching voltage performance.

Frequently Asked Questions (FAQ)

Q: Can ALQ105 directly replace JS1F-5V-F in all applications?

A: ALQ105 is functionally compatible for coil voltage, contact configuration, and mounting. However, the reduced contact rating (5A versus 10A) restricts its use to applications switching currents of 5A or less. Verify your circuit's maximum switching current before selection.

Q: What are the key differences between the two substitute options?

A: ALQ105 offers reduced current capacity (5A) but maintains Panasonic manufacturing. J107F1CS125VDC.36 provides higher current capacity (12A), extended temperature range, and superior switching voltage capability, but is manufactured by CIT Relay and Switch. Selection depends on your specific current, voltage, and temperature requirements.

Q: Are both substitute parts available in the same packaging as JS1F-5V-F?

A: No. JS1F-5V-F uses standard packaging, ALQ105 is supplied in Box packaging, and J107F1CS125VDC.36 is supplied in Tube packaging. Verify packaging compatibility with your assembly process.

Q: Do the substitute parts have the same coil resistance?

A: Coil resistance values are similar but not identical. JS1F-5V-F: 69.4 Ohms, ALQ105: 62.5 Ohms, J107F1CS125VDC.36: 70 Ohms. These minor variations may affect coil current draw and should be verified against your circuit design.

Q: What is the impact of different operate and release times?

A: JS1F-5V-F and J107F1CS125VDC.36 both operate and release in 10ms and 5-10ms respectively, suitable for standard switching applications. ALQ105 has longer switching times (20ms operate, 20ms release), which may affect applications requiring rapid response.

Q: Are all substitute parts RoHS compliant?

A: Yes. JS1F-5V-F is RoHS Compliant, ALQ105 is ROHS3 Compliant, and J107F1CS125VDC.36 is RoHS Compliant. All parts meet current environmental compliance standards.