JS1AF-9V-F General Purpose Relay SPST-NO 9VDC Equivalent & Substitute Parts

Part Overview

The JS1AF-9V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with a 9VDC coil. This through-hole mounted relay is designed for switching applications up to 10A at 250VAC or 100VDC. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

JS1AF-9V-F

Panasonic Electric WorksIn Stock: 801JS1AF-9V-F Datasheet

Current PartRFQ

ALQ309

Panasonic Electric WorksIn Stock: 2187ALQ309 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the JS1AF-9V-F is determined by the following critical parameters:

• Coil Voltage: Must be 9VDC to ensure direct compatibility with existing circuit designs
• Contact Form: Must be SPST-NO (1 Form A) to maintain identical switching functionality
• Mounting Type: Must be Through Hole to fit existing PCB layouts
• Termination Style: Must be PC Pin for direct connection compatibility

The ALQ309 is identified as a substitute part. While it maintains the same coil voltage (9VDC), contact form (SPST-NO), mounting type (Through Hole), and termination style (PC Pin), it differs in contact current rating (5A vs. 10A) and switching voltage specifications. The ALQ309 is suitable for applications where the lower current rating is acceptable.

Parameter Comparison

Engineering Selection Recommendations

The ALQ309 is an active product from Panasonic Electric Works and serves as a functional substitute for the obsolete JS1AF-9V-F in applications where the lower contact current rating (5A vs. 10A) is acceptable. The ALQ309 maintains compliance with ROHS3 standards and offers an extended operating temperature range (-40°C ~ 85°C vs. -40°C ~ 70°C).

Selection of the ALQ309 should be based on application current requirements. Applications requiring the full 10A contact rating of the original JS1AF-9V-F must source alternative parts with matching current specifications. The ALQ309's lower coil current (22.2 mA vs. 40 mA) and higher coil resistance (405 Ohms vs. 225 Ohms) may provide benefits in power-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can the ALQ309 directly replace the JS1AF-9V-F in all applications?

A: The ALQ309 is compatible with applications where the contact current requirement does not exceed 5A. Applications requiring 10A switching capability must use alternative parts with matching current ratings.

Q: What are the key differences between these relays?

A: The primary differences are contact current rating (10A vs. 5A), switching voltage maximum (100VDC vs. 30VDC), coil current (40 mA vs. 22.2 mA), and switching time (10 ms vs. 20 ms). Both maintain identical coil voltage, contact form, mounting type, and termination style.

Q: Are both relays RoHS compliant?

A: Yes. The JS1AF-9V-F is RoHS Compliant, and the ALQ309 is ROHS3 Compliant.

Q: What is the packaging difference?

A: The JS1AF-9V-F uses standard packaging, while the ALQ309 is supplied in Box packaging.

Q: Does the ALQ309 have any certifications?

A: The ALQ309 carries approvals from CQC, cURuus, and VDE, and maintains REACH Unaffected status.