JS0404FP4-S Equivalent & Substitute Parts

Part Overview

The JS0404FP4-S is a DIP slide switch manufactured by NKK Switches, configured as a 4-position SPST surface mount component rated for 25mA at 24VDC. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The component features a flush, recessed slide actuator with gold-plated copper alloy contacts and is designed for applications requiring reliable switching in industrial and control systems.

Substiute Parts

JS0404FP4-S

NKK SwitchesIn Stock: 1046JS0404FP4-S Datasheet

Current PartRFQ

1825140-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8091825140-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS0404FP4-S is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPST)
• Number of positions (4)
• Current and voltage ratings (25mA, 24VDC)
• Actuator type and level (Slide, Flush/Recessed)
• Mounting type (Surface Mount)
• Termination style (Gull Wing)
• Pitch specification (0.050", Half)
• Contact material and finish (Copper Alloy, Gold)
• Operating temperature range (-30°C to 85°C)
• Moisture sensitivity level (MSL 1)

The substitute part 1825140-1 (TE Connectivity ALCOSWITCH Switches) meets all these criteria, enabling direct functional replacement in applications currently using the JS0404FP4-S.

Parameter Comparison

Engineering Selection Recommendations

The 1825140-1 serves as a direct functional equivalent to the obsolete JS0404FP4-S. Both components share identical electrical specifications, actuator characteristics, and mounting requirements. The substitute part offers the advantage of active product status, ensuring continued availability and supply chain stability. Additionally, the 1825140-1 carries ROHS3 compliance, supporting modern regulatory requirements for new designs and manufacturing processes.

Physical differences exist in height above board (0.067" versus 0.087") and body material composition (PPS versus glass-filled polyamide). These variations do not affect electrical performance or functional compatibility in standard applications. The 1825140-1 exhibits reduced mechanical and electrical life ratings (1,000 cycles versus 2,000 cycles), which should be evaluated against specific application duty cycle requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1825140-1 replace the JS0404FP4-S in existing designs?

A: Yes. Both components are electrically and functionally equivalent across all critical parameters: SPST circuit, 4-position configuration, 25mA/24VDC ratings, slide actuator, surface mount gull wing termination, and 0.050" pitch. The substitute part maintains compatibility with existing PCB layouts and electrical requirements.

Q: What are the physical differences between these parts?

A: The 1825140-1 is 0.020" (0.50mm) lower in height above board compared to the JS0404FP4-S. The body material differs (PPS versus glass-filled polyamide), but this does not impact electrical performance or mechanical interface compatibility.

Q: Are there differences in operational life between these components?

A: The JS0404FP4-S is rated for 2,000 mechanical and electrical cycles, while the 1825140-1 is rated for 1,000 cycles. Applications requiring extended cycle life should evaluate this specification against actual duty cycle demands.

Q: Does the 1825140-1 meet current regulatory standards?

A: Yes. The 1825140-1 is ROHS3 compliant, supporting modern manufacturing and environmental regulations. The JS0404FP4-S is classified as not applicable for RoHS status due to its obsolete designation.

Q: Are packaging and handling requirements identical?

A: Both components are supplied in tube packaging with MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control measures are required during storage or handling.