JS1AF-B-9V-F General Purpose Relay SPST 10A 9VDC

Part Overview

The JS1AF-B-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 identification of functionally equivalent alternatives necessary for ongoing maintenance and new designs requiring similar switching capabilities.

Substiute Parts

JS1AF-B-9V-F

Panasonic Electric WorksIn Stock: 1022JS1AF-B-9V-F Datasheet

Current PartRFQ

ALQ309

Panasonic Electric WorksIn Stock: 2187ALQ309 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The ALQ309 is identified as a substitute for the JS1AF-B-9V-F based on the following matching parameters:

• Identical coil voltage: 9VDC
• Identical contact form: SPST-NO (1 Form A)
• Identical mounting type: Through Hole
• Identical termination style: PC Pin
• Identical coil type: Non Latching
• Identical operating temperature range: -40°C ~ 85°C
• Identical manufacturer: Panasonic Electric Works

The ALQ309 differs in contact current rating (5A vs 10A), switching voltage maximum (30VDC vs 100VDC), and coil current (22.2 mA vs 40 mA). These differences must be evaluated against specific application requirements to determine suitability.

Parameter Comparison

Engineering Selection Recommendations

The ALQ309 is an active product from the same manufacturer with current production and availability. It maintains electrical compatibility for the 9VDC coil control circuit and identical contact form configuration. The ALQ309 carries ROHS3 compliance, exceeding the RoHS compliance of the obsolete JS1AF-B-9V-F.

Selection of the ALQ309 requires verification that application load requirements do not exceed 5A continuous current or 30VDC switching voltage. The reduced coil current (22.2 mA vs 40 mA) results in lower power consumption and reduced heat generation. The higher coil resistance (405 Ohms vs 225 Ohms) reflects this design difference.

Frequently Asked Questions (FAQ)

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

A: Direct replacement is possible only when application load current does not exceed 5A and switching voltage does not exceed 30VDC. The JS1AF-B-9V-F is rated for 10A at 250VAC or 100VDC maximum. Applications requiring these higher ratings require alternative solutions.

Q: What is the impact of different coil current specifications?

A: The ALQ309 requires 22.2 mA coil current versus 40 mA for the JS1AF-B-9V-F. This lower current requirement reduces power dissipation and allows use with higher impedance drive circuits. Existing drive circuits designed for 40 mA operation will function with the ALQ309 but will operate with reduced coil current margin.

Q: Are there packaging differences between these relays?

A: The JS1AF-B-9V-F uses standard through-hole PC pin termination. The ALQ309 is supplied in box packaging but maintains identical through-hole mounting and PC pin termination, ensuring mechanical compatibility on printed circuit boards.

Q: How do the contact materials differ?

A: The JS1AF-B-9V-F uses Silver Tin Oxide (AgSnO) contacts, while the ALQ309 uses Silver Nickel (AgNi) contacts. Both materials are suitable for general purpose switching applications within their respective current and voltage ratings.

Q: What compliance certifications apply to the ALQ309?

A: The ALQ309 carries CQC, cURuus, and VDE approvals in addition to ROHS3 compliance and REACH unaffected status, providing broader regulatory acceptance than the obsolete JS1AF-B-9V-F.