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

Part Overview

The JS1AF-F-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 compatible substitute parts essential for ongoing system maintenance and new design implementations where legacy component replacement is required.

Substiute Parts

JS1AF-F-9V-F

Panasonic Electric WorksIn Stock: 936JS1AF-F-9V-F Datasheet

Current PartRFQ

ALQ3F09

Panasonic Electric WorksIn Stock: 1702ALQ3F09 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the JS1AF-F-9V-F is evaluated based on the following critical parameters that must align for functional compatibility:

Primary Matching Criteria:

• Coil Voltage: 9VDC (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)

Secondary Compatibility Parameters:

• Contact Rating (Current): Minimum 10A required for direct substitution
• Switching Voltage: Minimum 250VAC and 100VDC required
• Operating Temperature Range: Must encompass -40°C ~ 105°C
• Coil Current: Lower values acceptable; higher values require circuit verification

The ALQ3F09 meets the primary matching criteria for coil voltage, contact form, mounting type, termination style, and coil type. However, the contact rating of 5A is below the original 10A specification, and the maximum switching voltage of 30VDC is significantly lower than the original 100VDC specification. These differences indicate that ALQ3F09 is suitable only for applications where the actual load requirements are within its reduced ratings.

Parameter Comparison

Engineering Selection Recommendations

The ALQ3F09 is an active product from Panasonic Electric Works and represents a viable substitute for the obsolete JS1AF-F-9V-F in applications where load requirements do not exceed the ALQ3F09 specifications. Both components maintain RoHS compliance (RoHS Compliant and ROHS3 Compliant respectively) and share identical coil voltage, contact form, and mounting characteristics.

Selection of ALQ3F09 as a substitute requires verification that the application load does not exceed 5A continuous current and 30VDC maximum switching voltage. The ALQ3F09 operates within a reduced temperature range (-40°C ~ 85°C versus -40°C ~ 105°C), which may be limiting for high-temperature applications. The ALQ3F09 exhibits lower coil current (22.2 mA versus 40 mA) and higher coil resistance (405 Ohms versus 225 Ohms), resulting in reduced power consumption. Response times are doubled (20 ms operate and release versus 10 ms), which may impact timing-critical applications.

The ALQ3F09 carries additional approval certifications (CQC, cURuus, VDE) and REACH compliance status, making it suitable for regulated markets and applications requiring third-party validation.

Frequently Asked Questions (FAQ)

Q: Can ALQ3F09 directly replace JS1AF-F-9V-F in all applications?

A: No. While both relays share the same 9VDC coil voltage and SPST-NO contact form, the ALQ3F09 has reduced contact rating (5A versus 10A) and lower maximum DC switching voltage (30VDC versus 100VDC). Direct substitution is only valid for applications where actual load requirements remain within ALQ3F09 specifications.

Q: What are the key differences in electrical performance?

A: The ALQ3F09 draws less coil current (22.2 mA versus 40 mA) due to higher coil resistance (405 Ohms versus 225 Ohms). Response times are slower (20 ms versus 10 ms for both operate and release). The ALQ3F09 operates at a higher must-operate voltage (6.75 VDC versus 6.3 VDC) and lower must-release voltage (0.45 VDC versus 0.9 VDC).

Q: Are there temperature range limitations with ALQ3F09?

A: Yes. The ALQ3F09 maximum operating temperature is 85°C, compared to 105°C for the JS1AF-F-9V-F. Applications requiring operation above 85°C cannot use ALQ3F09 as a substitute.

Q: Do both relays use the same contact material?

A: No. The JS1AF-F-9V-F uses Silver Tin Oxide (AgSnO) contacts, while ALQ3F09 uses Silver Nickel (AgNi) contacts. This difference may affect performance in specific switching applications, particularly with inductive loads or high-frequency switching.

Q: What is the packaging difference?

A: The JS1AF-F-9V-F is supplied with standard packaging, while ALQ3F09 is supplied in a Box. Both use PC Pin termination suitable for through-hole PCB mounting.

Q: Are compliance certifications equivalent?

A: Both components are RoHS compliant. The ALQ3F09 carries additional certifications (CQC, cURuus, VDE) and REACH compliance status, providing broader regulatory acceptance in international markets.