JS1A-B-6V-F General Purpose Relay Equivalent & Substitute Parts

Part Overview

The JS1A-B-6V-F is a general purpose relay manufactured by Panasonic Electric Works, configured as a SPST-NO (1 Form A) with a 6VDC coil and 10A contact rating. This through-hole mounted relay is designed for general switching applications requiring sealed operation and Class B coil insulation. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

JS1A-B-6V-F

Panasonic Electric WorksIn Stock: 1119JS1A-B-6V-F Datasheet

Current PartRFQ

ALQ306

Panasonic Electric WorksIn Stock: 1501ALQ306 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS1A-B-6V-F is determined by the following critical parameters:

• Coil Voltage: Must be 6VDC to ensure direct compatibility with existing circuit designs
• Contact Form: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Mounting Type: Must be Through Hole to ensure PCB compatibility
• Termination Style: Must be PC Pin for direct connection to printed circuit boards
• Operating Temperature Range: Must support -40°C ~ 85°C minimum
• Coil Type: Must be Non Latching for equivalent operational behavior

The ALQ306 is identified as a substitute part. While it maintains compatibility in coil voltage, contact form, mounting type, termination style, and operating temperature range, it exhibits reduced contact current rating (5A versus 10A) and lower maximum switching voltage (250VAC, 30VDC versus 250VAC, 100VDC). These differences require application-level evaluation to confirm suitability for specific load conditions.

Parameter Comparison

Engineering Selection Recommendations

The ALQ306 is an active product from the same manufacturer, providing continuity for applications previously using the obsolete JS1A-B-6V-F. Both parts maintain RoHS compliance and support the full operating temperature range. The ALQ306 carries additional regulatory approvals (CQC, cURuus, VDE) and is REACH unaffected.

Selection of the ALQ306 as a substitute requires confirmation that the application load does not exceed 5A continuous current or 150W maximum switching power. Applications requiring the full 10A contact rating of the original JS1A-B-6V-F cannot use the ALQ306 without circuit redesign. The ALQ306 exhibits slower switching response (20ms operate and release time versus 10ms), which may impact timing-sensitive applications. The higher must-operate voltage (4.5VDC versus 4.2VDC) requires verification that the coil supply voltage margin remains adequate in the target application.

Frequently Asked Questions (FAQ)

Q: Can the ALQ306 directly replace the JS1A-B-6V-F in all applications?

A: Direct replacement is possible only in applications where the load current does not exceed 5A and the maximum switching voltage does not exceed 250VAC or 30VDC. The slower switching time (20ms versus 10ms) must be evaluated for timing-critical circuits.

Q: What is the primary difference between these two relays?

A: The JS1A-B-6V-F supports 10A contact current with 100VDC maximum switching voltage, while the ALQ306 is rated for 5A contact current with 30VDC maximum switching voltage. Both share identical coil voltage, contact form, and mounting configuration.

**Q: Are there packaging differences between these