JS1AF-5V-F Equivalent & Substitute Parts

Part Overview

The JS1AF-5V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with a 5VDC coil. This through-hole mounted relay is rated for 10A at 250VAC or 100VDC maximum switching voltage. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and legacy equipment support.

Substiute Parts

JS1AF-5V-F

Panasonic Electric WorksIn Stock: 2811JS1AF-5V-F Datasheet

Current PartRFQ

ALQ305

Panasonic Electric WorksIn Stock: 2040ALQ305 Datasheet

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J107F1AS125VDC.36

CIT Relay and SwitchIn Stock: 1440J107F1AS125VDC.36 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the JS1AF-5V-F are identified based on the following critical parameters that must align for functional equivalence:

• Coil Voltage: 5VDC (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)
• Coil Type: Non Latching (exact match required)

The substitute parts ALQ305 and J107F1AS125VDC.36 both satisfy these core requirements. Variations in contact current rating, switching voltage maximum, coil current, and operating temperature range are acceptable within the allowed electrical and mechanical parameters for this relay category, provided the application requirements do not exceed the substitute part specifications.

Parameter Comparison

Engineering Selection Recommendations

ALQ305 is an active product from Panasonic Electric Works with ROHS3 compliance and extended operating temperature range (-40°C ~ 85°C). This substitute is suitable for applications where the contact current requirement does not exceed 5A and switching voltage does not exceed 250VAC or 30VDC. The ALQ305 features lower coil current (40 mA) and higher coil resistance (125 Ohms), which may reduce power consumption in the control circuit. Longer operate and release times (20 ms each) should be verified against application timing requirements.

J107F1AS125VDC.36 is an active product from CIT Relay and Switch with RoHS compliance and the widest operating temperature range (-55°C ~ 125°C). This substitute provides higher contact current rating (12A) and superior switching voltage capability (380VAC, 110VDC), making it suitable for applications requiring greater electrical capacity. The coil current (71.4 mA) and coil resistance (70 Ohms) closely match the original JS1AF-5V-F specifications. Faster release time (5 ms) provides improved switching performance.

Selection between ALQ305 and J107F1AS125VDC.36 depends on application-specific requirements for current capacity, switching voltage, temperature range, and switching speed.

Frequently Asked Questions (FAQ)

Q: Can ALQ305 replace JS1AF-5V-F in all applications? A: ALQ305 is functionally equivalent for applications where contact current does not exceed 5A and switching voltage remains within 250VAC or 30VDC limits. Applications requiring the original 10A rating require J107F1AS125VDC.36.

Q: What is the primary difference between the two substitute parts? A: ALQ305 has a lower contact current rating (5A) and reduced switching voltage capability (30VDC maximum), while J107F1AS125VDC.36 provides higher contact current (12A) and superior switching voltage (110VDC maximum). J107F1AS125VDC.36 also offers a wider operating temperature range.

Q: Are there packaging differences between these substitutes? A: Yes. ALQ305 is supplied in Box packaging, while J107F1AS125VDC.36 is supplied in Tube packaging. Both are through-hole mounted with PC pin termination, compatible with standard PCB assembly processes.

Q: Do the substitute parts have different coil operating characteristics? A: Yes. ALQ305 requires 3.75 VDC minimum to operate (versus 4.6 VDC for JS1AF-5V-F) and has longer switching times (20 ms operate and release versus 10 ms for the original). J107F1AS125VDC.36 matches the original operate time (10 ms) and has faster release time (5 ms).

Q: Are both substitutes RoHS compliant? A: Yes. ALQ305 is ROHS3 compliant and J107F1AS125VDC.36 is RoHS compliant. Both meet current environmental regulations.