JS1-F-12V-F-6K Equivalent & Substitute Parts

Part Overview

The JS1-F-12V-F-6K is a general purpose relay manufactured by Panasonic Electric Works, featuring a Single Pole Double Throw (SPDT) contact configuration with a 12VDC coil and 10A contact rating. This through-hole mounted relay is designed for standard switching applications in industrial and commercial equipment. The product is currently obsolete, making identification of compatible substitute parts essential for maintenance, repair, and legacy system support.

Substiute Parts

JS1-F-12V-F-6K

Panasonic Electric WorksIn Stock: 1205JS1-F-12V-F-6K Datasheet

Current PartRFQ

ALQ1F12

Panasonic Electric WorksIn Stock: 1060ALQ1F12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS1-F-12V-F-6K is determined by the following critical parameters:

• Coil Voltage: Must be 12VDC 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 connection compatibility

The ALQ1F12 meets the primary functional requirements of coil voltage, contact form, mounting type, and termination style. However, differences exist in contact rating, switching voltage limits, and operating temperature range that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The ALQ1F12 is an active product substitute for the obsolete JS1-F-12V-F-6K. Both relays share identical coil voltage (12VDC), contact form (SPDT), mounting type (Through Hole), and termination style (PC Pin), establishing functional compatibility for circuit integration.

Key differences require application-level evaluation:

• Contact Rating: The ALQ1F12 provides 5A maximum current versus the original 10A rating. Applications requiring currents above 5A cannot use this substitute.
• Switching Voltage: The ALQ1F12 supports 30VDC maximum versus the original 100VDC. Applications switching voltages above 30VDC require alternative solutions.
• Operating Temperature: The ALQ1F12 operates to 85°C maximum versus the original 105°C. High-temperature applications above 85°C require alternative solutions.
• Switching Speed: The ALQ1F12 exhibits 20ms operate and release times versus the original 10ms. Time-critical applications requiring faster switching require alternative solutions.

Both products carry RoHS compliance (RoHS Compliant and ROHS3 Compliant respectively) and MSL Level 1 ratings, supporting modern manufacturing and environmental standards. The ALQ1F12 includes additional certifications (CQC, cURuus, VDE) and REACH compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the ALQ1F12 directly replace the JS1-F-12V-F-6K in all applications?

A: Direct replacement is possible only when the application operates within the ALQ1F12 specifications: maximum 5A contact current, maximum 30VDC switching voltage, maximum 85°C ambient temperature, and acceptable switching times of 20ms. Applications exceeding any of these parameters require alternative parts.

Q: What is the impact of the 5A versus 10A contact rating difference?

A: The ALQ1F12 contact rating of 5A is half that of the original JS1-F-12V-F-6K at 10A. Applications requiring sustained currents between 5A and 10A cannot use the ALQ1F12 without risk of contact degradation or failure.

Q: Are there packaging differences between these parts?

A: The JS1-F-12V-F-6K uses standard packaging, while the ALQ1F12 is supplied in Box packaging. Both use identical Through Hole mounting and PC Pin termination, ensuring PCB footprint compatibility.

Q: How do the switching speed differences affect circuit performance?

A: The ALQ1F12 operates and releases in 20ms compared to the original 10ms. Applications with timing-sensitive switching sequences or high-frequency switching requirements may experience performance degradation with the ALQ1F12.

Q: Are both parts RoHS compliant?

A: Yes. The JS1-F-12V-F-6K is RoHS Compliant, and the ALQ1F12 is ROHS3 Compliant. Both meet current environmental regulations for electronic component manufacturing.

Q: What is the coil voltage compatibility between these relays?

A: Both relays operate on 12VDC coil voltage with similar operating characteristics (JS1-F-12V-F-6K: 8.4V must-operate, 1.2V must-release; ALQ1F12: 9V must-operate, 0.6V must-release). Standard 12VDC supply circuits support both relays.