Equivalent & Substitute Parts for JS1-9V-F

Part Overview

The JS1-9V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a Single Pole Double Throw (SPDT) contact configuration with a 9VDC coil. This through-hole mounted relay is rated for 10A switching capacity and is designed for general industrial and commercial applications requiring reliable electromechanical switching. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and redesign applications where continued availability is required.

Substiute Parts

JS1-9V-F

Panasonic Electric WorksIn Stock: 1090JS1-9V-F Datasheet

Current PartRFQ

ALQ109

Panasonic Electric WorksIn Stock: 2007ALQ109 Datasheet

SimilarRFQ

J107F1CS129VDC.36

CIT Relay and SwitchIn Stock: 2589J107F1CS129VDC.36 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS1-9V-F relay is determined by the following critical parameters:

Primary Compatibility Criteria:

• Coil voltage must be 9VDC
• Contact configuration must be SPDT (1 Form C)
• Mounting type must be Through Hole
• Termination style must be PC Pin
• Coil type must be Non Latching

Secondary Compatibility Criteria:

• Contact rating current must meet or exceed 10A
• Switching voltage must support 250VAC and 100VDC operation
• Coil current must not exceed 44.4 mA (driver circuit compatibility)
• Operating temperature range should encompass -40°C to 70°C minimum
• Seal rating should be maintained for environmental protection

The two identified substitute parts meet these primary criteria with variations in secondary parameters that require engineering evaluation based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

ALQ109 Substitution Considerations:

The ALQ109 is an active product from Panasonic Electric Works with ROHS3 compliance, providing supply chain continuity from the original manufacturer. However, the contact rating of 5A is below the 10A specification of the JS1-9V-F, making this substitute unsuitable for applications requiring the full 10A switching capacity. The maximum switching voltage for DC operation is limited to 30VDC compared to the original 100VDC specification. The ALQ109 exhibits longer switching times (20ms operate and release versus 10ms for the original), which may impact timing-sensitive applications. This part is appropriate only for applications with reduced current requirements below 5A.

J107F1CS129VDC.36 Substitution Considerations:

The J107F1CS129VDC.36 from CIT Relay and Switch is an active product with RoHS compliance and superior electrical specifications. The contact rating of 12A exceeds the original 10A requirement, and the maximum switching voltage of 380VAC and 110VDC surpasses the original specifications. The coil current matches the original at 40mA, and the coil resistance is identical at 225 Ohms, ensuring driver circuit compatibility. The operating temperature range of -55°C to 125°C exceeds the original -40°C to 70°C specification. The sealed construction matches the original design. This part is suitable as a direct substitute for applications requiring equivalent or enhanced electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the ALQ109 be used as a direct replacement for the JS1-9V-F?

A: The ALQ109 shares the same coil voltage, contact form, and mounting type as the JS1-9V-F. However, the 5A contact rating is insufficient for applications requiring 10A switching capacity. Use ALQ109 only in applications with current requirements below 5A.

Q: What are the key differences between J107F1CS129VDC.36 and the original JS1-9V-F?

A: The J107F1CS129VDC.36 provides higher contact rating (12A versus 10A), higher maximum switching voltage (380VAC/110VDC versus 250VAC/100VDC), faster release time (5ms versus 10ms), and an extended operating temperature range (-55°C to 125°C versus -40°C to 70°C). Coil voltage, current, and resistance are identical.

Q: Are there packaging differences between these relays?

A: The JS1-9V-F uses PC Pin termination in standard through-hole packaging. The ALQ109 is supplied in Box packaging, while the J107F1CS129VDC.36 is supplied in Tube packaging. All three use PC Pin termination style compatible with through-hole PCB mounting.

Q: Which substitute part is recommended for new designs?

A: The J107F1CS129VDC.36 is recommended for new designs requiring equivalent or enhanced performance. It maintains all critical electrical parameters of the original while providing superior specifications and active product status.

Q: How do the switching times compare?

A: The JS1-9V-F and J107F1CS129VDC.36 both operate in 10ms with the J107F1CS129VDC.36 releasing faster at 5ms. The ALQ109 requires 20ms for both operate and release, which may affect timing-critical applications.

Q: Are all three relays RoHS compliant?

A: Yes. The JS1-9V-F and J107F1CS129VDC.36 are RoHS Compliant. The ALQ109 is ROHS3 Compliant, representing a more recent compliance standard.