JS1AF-6V-F General Purpose Relay SPST-NO 6VDC Equivalent & Substitute Parts

Part Overview

The JS1AF-6V-F is a general purpose relay manufactured by Panasonic Electric Works, configured as a single-pole single-throw normally open (SPST-NO) contact form with a 6VDC coil. This through-hole mounted relay is designed for switching applications up to 10A at 250VAC or 100VDC maximum. The JS1AF-6V-F has been classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance, repair, and new design implementations where legacy component replacement is required.

Substiute Parts

JS1AF-6V-F

Panasonic Electric WorksIn Stock: 1043JS1AF-6V-F Datasheet

Current PartRFQ

ALQ306

Panasonic Electric WorksIn Stock: 1501ALQ306 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete JS1AF-6V-F relay is evaluated based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

• Coil voltage: 6VDC (exact match required)
• Contact form: SPST-NO (1 Form A) (exact match required)
• Mounting type: Through Hole (exact match required)
• Termination style: PC Pin (exact match required)

Secondary Compatibility Parameters:

• Contact rating current capacity
• Maximum switching voltage
• Coil current draw
• Operating temperature range
• Contact material composition
• RoHS and regulatory compliance status

The ALQ306 relay meets the primary matching criteria and maintains functional compatibility within the allowed parameter tolerances for general purpose relay applications. While certain secondary parameters differ, these variations remain within acceptable engineering substitution boundaries for the SPST-NO relay category.

Parameter Comparison

Engineering Selection Recommendations

The ALQ306 serves as a functional substitute for the obsolete JS1AF-6V-F based on matching primary electrical and mechanical parameters. Both relays share identical coil voltage (6VDC), contact form (SPST-NO), mounting configuration (through-hole), and termination style (PC pin).

Selection Considerations:

The ALQ306 is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete JS1AF-6V-F. Both components maintain RoHS compliance and unlimited moisture sensitivity rating (MSL 1).

Secondary parameter differences exist: the ALQ306 has a lower contact current rating (5A versus 10A), reduced maximum DC switching voltage (30VDC versus 100VDC), and different contact material (Silver Nickel versus Silver Tin Oxide). These differences require application-level verification to confirm the ALQ306 meets the specific load and switching requirements of the target circuit.

The ALQ306 operates across an extended temperature range (-40°C to 85°C) compared to the JS1AF-6V-F (-40°C to 70°C), providing improved thermal performance in high-temperature environments. The ALQ306 also draws lower coil current (33.3mA versus 60mA), reducing power consumption in the control circuit.

Frequently Asked Questions (FAQ)

Q: Can the ALQ306 directly replace the JS1AF-6V-F in all applications?

A: The ALQ306 matches the primary electrical and mechanical parameters required for SPST-NO relay substitution. However, application-specific verification is necessary. The ALQ306 has lower contact current rating (5A versus 10A) and reduced maximum DC switching voltage (30VDC versus 100VDC). Confirm that your application load does not exceed these ALQ306 specifications.

Q: What are the key differences between these two relays?

A: Both relays share 6VDC coil voltage, SPST-NO contact form, through-hole mounting, and PC pin termination. Differences include contact current rating, maximum switching voltage, coil current draw, operating temperature range, and contact material composition. The ALQ306 is currently in production while the JS1AF-6V-F is obsolete.

Q: Are there any compliance or certification differences?

A: Both relays are RoHS compliant and carry MSL 1 (unlimited) moisture sensitivity rating. The ALQ306 holds additional approvals (CQC, cURuus, VDE) and meets ROHS3 compliance. Both share the same ECCN (EAR99) and HTSUS classification.

Q: Will the ALQ306 fit the same PCB footprint as the JS1AF-6V-F?

A: Both relays use through-hole PC pin termination. Physical footprint compatibility depends on specific pin spacing and package dimensions. Consult the detailed mechanical drawings for both components to confirm PCB layout compatibility.

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

A: The ALQ306 requires 33.3mA coil current versus 60mA for the JS1AF-6V-F. This lower current draw reduces power consumption in the control circuit and may allow use of lower-rated driver components. Verify that your existing control circuit can properly energize the ALQ306 coil.

Q: How do the different contact materials affect relay performance?

A: The JS1AF-6V-F uses Silver Tin Oxide (AgSnO) contacts while the ALQ306 uses Silver Nickel (AgNi) contacts. Both materials are suitable for general purpose switching applications. Contact material selection affects arc resistance, contact wear, and switching characteristics. Application-specific load profile determines material suitability.