Equivalent & Substitute Parts for JS1-F-48V-F

Part Overview

The JS1-F-48V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a Single Pole Double Throw (SPDT) contact configuration with a 48VDC coil. This through-hole mounted relay is rated for 10A switching capacity and operates across an industrial temperature range of -40°C to 105°C. The product is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and new design implementations where this relay type is specified.

Substiute Parts

JS1-F-48V-F

Panasonic Electric WorksIn Stock: 1064JS1-F-48V-F Datasheet

Current PartRFQ

ALQ1F48

Panasonic Electric WorksIn Stock: 1052ALQ1F48 Datasheet

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J107F1CS1248VDC.36

CIT Relay and SwitchIn Stock: 2564J107F1CS1248VDC.36 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS1-F-48V-F is determined by strict alignment with the following critical parameters:

• Coil Voltage: Must be 48VDC
• Contact Form: Must be SPDT (1 Form C)
• Mounting Type: Must be Through Hole
• Termination Style: Must be PC Pin
• Coil Type: Must be Non Latching

The two substitute parts identified meet the primary functional requirements of 48VDC coil voltage, SPDT contact configuration, and through-hole mounting. However, variations exist in contact current rating, switching voltage limits, operating temperature range, and contact material composition. These variations define the scope of application compatibility for each substitute.

Parameter Comparison

Engineering Selection Recommendations

ALQ1F48: This Panasonic Electric Works substitute maintains the same manufacturer lineage and shares identical coil voltage, contact form, and mounting specifications. However, the contact current rating is reduced to 5A compared to the original 10A specification. The maximum switching voltage is also limited to 30VDC, which is significantly lower than the original 100VDC rating. The operating temperature range is restricted to -40°C to 85°C, reducing the upper temperature capability by 20°C. This part is suitable only for applications where the load current does not exceed 5A and switching voltages remain below 30VDC. The product status is Active, ensuring continued availability.

J107F1CS1248VDC.36: This CIT Relay and Switch substitute exceeds the original contact current rating at 12A and provides superior switching voltage capability at 380VAC and 110VDC maximum. The operating temperature range extends to -55°C to 125°C, offering enhanced performance across both lower and upper temperature extremes. The coil resistance matches the original specification at 6.4 kOhms, and the contact material is identical Silver Tin Oxide (AgSnO). The relay features sealed construction and is RoHS Compliant. This part is suitable for applications requiring higher current capacity, extended temperature operation, or higher switching voltages. The product status is Active with established inventory availability.

Frequently Asked Questions (FAQ)

Q: Can ALQ1F48 directly replace JS1-F-48V-F in all applications?

A: No. ALQ1F48 has a reduced contact current rating of 5A versus the original 10A specification. It is suitable only for applications where the switching current does not exceed 5A. Additionally, the maximum switching voltage is limited to 30VDC, which may not be adequate for circuits requiring higher voltage switching capability.

Q: Is J107F1CS1248VDC.36 a direct upgrade for JS1-F-48V-F?

A: J107F1CS1248VDC.36 meets or exceeds all critical electrical specifications of the original part, including contact current (12A versus 10A), switching voltage (110VDC versus 100VDC), and operating temperature range (-55°C to 125°C versus -40°C to 105°C). It is suitable as a direct replacement in applications where the original specifications are required or where enhanced performance is beneficial.

Q: What is the impact of different contact materials on relay performance?

A: JS1-F-48V-F and J107F1CS1248VDC.36 both use Silver Tin Oxide (AgSnO) contact material, which provides consistent switching characteristics. ALQ1F48 uses Silver Nickel (AgNi) contact material, which has different electrical and wear characteristics. Contact material selection affects contact resistance, switching reliability, and longevity under specific load conditions.

Q: Are there packaging differences between these relays?

A: Yes. JS1-F-48V-F packaging is not specified. ALQ1F48 is packaged in boxes, while J107F1CS1248VDC.36 is supplied in tubes. Packaging affects handling, storage, and integration into automated assembly processes.

Q: What compliance certifications should be considered for substitution?

A: JS1-F-48V-F and J107F1CS1248VDC.36 are both RoHS Compliant. J107F1CS1248VDC.36 additionally carries REACH Unaffected status. ALQ1F48 compliance status is not specified in available documentation. For applications requiring specific regulatory compliance, J107F1CS1248VDC.36 provides documented certification.

Q: How do coil current differences affect circuit design?

A: JS1-F-48V-F and J107F1CS1248VDC.36 both require 7.5 mA coil current, allowing direct driver circuit compatibility. ALQ1F48 requires 8.3 mA coil current, a 10.7% increase. This difference may require driver circuit evaluation to ensure adequate current supply capability.