JS1APF-B-18V-F General Purpose Relay Equivalent & Substitute Parts

Part Overview

The JS1APF-B-18V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with an 18VDC 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 substitutes necessary for ongoing maintenance and new designs requiring compatible functionality.

Substiute Parts

JS1APF-B-18V-F

Panasonic Electric WorksIn Stock: 1201JS1APF-B-18V-F Datasheet

Current PartRFQ

ALQ318

Panasonic Electric WorksIn Stock: 3969ALQ318 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS1APF-B-18V-F is determined by the following critical parameters:

• Coil Voltage: 18VDC (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)
• Operating Temperature Range: -40°C ~ 85°C (minimum requirement)
• Coil Type: Non Latching (exact match required)

The ALQ318 meets all mandatory substitution criteria. However, differences exist in contact current rating, switching voltage specifications, and coil characteristics that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The ALQ318 is an active product substitute for the obsolete JS1APF-B-18V-F. Both relays share identical coil voltage, contact form, mounting type, and termination style specifications.

Key differences requiring evaluation:

The ALQ318 has a reduced contact current rating of 5A compared to the JS1APF-B-18V-F's 10A rating. Applications requiring switching currents above 5A are not suitable for the ALQ318.

The ALQ318 has a lower maximum DC switching voltage of 30VDC compared to the JS1APF-B-18V-F's 100VDC. Applications requiring DC switching above 30VDC are not suitable for the ALQ318.

The ALQ318 operates with lower coil current (11.1 mA versus 20 mA) and higher coil resistance (1.62 kOhms versus 900 Ohms), resulting in reduced power consumption.

The ALQ318 has longer switching times (20 ms operate and release versus 10 ms), which may impact timing-critical applications.

The ALQ318 carries ROHS3 compliance and includes additional certifications (CQC, cURuus, VDE), providing broader regulatory acceptance in certain markets.

Frequently Asked Questions (FAQ)

Q: Can the ALQ318 directly replace the JS1APF-B-18V-F in all applications?

A: No. The ALQ318 has reduced contact current (5A versus 10A) and lower DC switching voltage (30VDC versus 100VDC). Substitution is valid only for applications within these lower specifications.

Q: What is the impact of the different coil currents (20 mA versus 11.1 mA)?

A: The ALQ318 requires less coil current, reducing power consumption and heat generation. This may allow use of lower-capacity power supply circuits. However, the higher coil resistance (1.62 kOhms versus 900 Ohms) must be considered in circuit design.

Q: Are the switching time differences significant?

A: The ALQ318 has 20 ms operate and release times compared to 10 ms for the JS1APF-B-18V-F. For applications requiring fast switching response, the ALQ318 may not be suitable. For general-purpose switching applications, this difference is typically acceptable.

Q: What are the differences in contact material?

A: The JS1APF-B-18V-F uses Silver Tin Oxide (AgSnO) contacts, while the ALQ318 uses Silver Nickel (AgNi) contacts. Both are standard relay contact materials suitable for general-purpose switching. Contact material selection depends on specific load characteristics and application requirements.

Q: Are both relays RoHS compliant?

A: Yes. The JS1APF-B-18V-F is RoHS Compliant, and the ALQ318 is ROHS3 Compliant. Both meet environmental compliance requirements.

Q: What certifications does the ALQ318 carry?

A: The ALQ318 carries CQC, cURuus, and VDE certifications in addition to ROHS3 compliance, providing broader regulatory acceptance compared to the obsolete JS1APF-B-18V-F.

Q: Are the packaging and mounting footprints identical?

A: Both relays use through-hole mounting with PC pin termination. However, physical dimensions and pin spacing should be verified against detailed datasheets before PCB layout confirmation.