JS1A-24V-F Equivalent & Substitute Parts

Part Overview

The JS1A-24V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with a 24VDC coil and 10A contact rating. This through-hole mounted relay is designed for general switching applications with a sealed, fully enclosed construction. The product is currently obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and new design implementations where this relay specification remains applicable.

Key Parameters

Parameter	Value
Coil Voltage	24VDC
Contact Form	SPST-NO (1 Form A)
Contact Rating (Current)	10 A
Mounting Type	Through Hole
Termination Style	PC Pin
Coil Type	Non Latching
Seal Rating	Sealed - Fully
Operating Temperature Range	-40°C ~ 70°C
Contact Material	Silver Tin Oxide (AgSnO)
Coil Resistance	1.6 kOhms

Substitute Part Grouping Explanation

Substitute parts for the JS1A-24V-F are identified based on the following critical parameters that must align with the original specification:

Coil voltage: 24VDC (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 following substitute parts meet these core requirements:

ALQ324 (Panasonic Electric Works): Matches all critical parameters. Contact rating is 5A, which is lower than the original 10A specification. This part is suitable for applications requiring lower switching currents.

J107F1AS1224VDC.36 (CIT Relay and Switch): Matches all critical parameters. Contact rating is 12A, which exceeds the original 10A specification. This part is suitable for applications requiring equal or higher current switching capacity.

Parameter Comparison

Parameter	JS1A-24V-F	ALQ324	J107F1AS1224VDC.36
Manufacturer	Panasonic Electric Works	Panasonic Electric Works	CIT Relay and Switch
Coil Voltage	24VDC	24VDC	24VDC
Contact Form	SPST-NO (1 Form A)	SPST-NO (1 Form A)	SPST-NO (1 Form A)
Contact Rating (Current)	10 A	5 A	12 A
Switching Voltage - Max	250VAC, 100VDC	250VAC, 30VDC	380VAC, 110VDC
Coil Current	15 mA	8.3 mA	15 mA
Mounting Type	Through Hole	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin	PC Pin
Seal Rating	Sealed - Fully	Not specified	Sealed - Fully
Operating Temperature Range	-40°C ~ 70°C	-40°C ~ 85°C	-55°C ~ 125°C
Contact Material	Silver Tin Oxide (AgSnO)	Silver Nickel (AgNi)	Silver Tin Oxide (AgSnO)
Coil Resistance	1.6 kOhms	2.88 kOhms	1.6 kOhms
Product Status	Obsolete	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

For direct replacement with equivalent current capacity:

J107F1AS1224VDC.36 is the preferred substitute when the original 10A contact rating must be maintained or exceeded. This part provides 12A contact rating, matching the original coil resistance (1.6 kOhms), identical contact material (Silver Tin Oxide), and identical operate/release times (10ms/5ms). The part is active in production, RoHS compliant, and offers an extended operating temperature range (-55°C ~ 125°C). Seal rating is fully sealed, matching the original specification.

For applications with reduced current requirements:

ALQ324 is suitable for applications where the switching current requirement is 5A or lower. This part is manufactured by the same original manufacturer (Panasonic Electric Works) and is active in production. It offers an extended operating temperature range (-40°C ~ 85°C) and lower coil current (8.3 mA versus 15 mA). The contact material differs (Silver Nickel versus Silver Tin Oxide), and seal rating is not specified. Coil resistance is higher (2.88 kOhms versus 1.6 kOhms), resulting in different electrical characteristics.

Both substitute parts are RoHS compliant and carry the same ECCN and HTSUS classifications as the original part.

Frequently Asked Questions (FAQ)

Q: Can ALQ324 be used as a direct replacement for JS1A-24V-F?

A: ALQ324 matches the critical parameters (24VDC coil, SPST-NO contact form, through-hole mounting, PC pin termination, non-latching coil type). However, the contact rating is 5A compared to the original 10A. Use ALQ324 only if your application requires 5A or less switching current.

Q: Can J107F1AS1224VDC.36 be used as a direct replacement for JS1A-24V-F?

A: Yes. J107F1AS1224VDC.36 matches all critical parameters and provides 12A contact rating, which exceeds the original 10A specification. Coil resistance, contact material, and seal rating are identical to the original part.

Q: What is the difference in coil resistance between the substitute parts?

A: JS1A-24V-F and J107F1AS1224VDC.36 both have 1.6 kOhms coil resistance. ALQ324 has 2.88 kOhms coil resistance, resulting in lower coil current (8.3 mA versus 15 mA) and different electrical behavior in the circuit.

Q: Are the substitute parts available in the same packaging as the original?

A: ALQ324 is supplied in Box packaging. J107F1AS1224VDC.36 is supplied in Tube packaging. The original JS1A-24V-F packaging is not specified in the available data.

Q: Do the substitute parts have the same operating temperature range?

A: No. JS1A-24V-F operates from -40°C to 70°C. ALQ324 operates from -40°C to 85°C. J107F1AS1224VDC.36 operates from -55°C to 125°C, providing the widest temperature range.

Q: What is the difference in contact material between the parts?

A: JS1A-24V-F and J107F1AS1224VDC.36 use Silver Tin Oxide (AgSnO) contact material. ALQ324 uses Silver Nickel (AgNi) contact material, which may affect performance in specific switching applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. JS1A-24V-F is RoHS Compliant. ALQ324 is ROHS3 Compliant. J107F1AS1224VDC.36 is RoHS Compliant. All parts meet RoHS requirements.

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