KAP1104R DIP Switch Equivalent & Substitute Parts

Part Overview

The KAP1104R is a 4-position DIP switch manufactured by E-Switch, featuring SPST (Single Pole Single Throw) circuit configuration with piano actuator design. This component is rated for 25mA at 24VDC and is designed for through-hole, right-angle mounting applications. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical ratings, mechanical configurations, and compliance certifications align with the original specification, enabling direct replacement in applications where component availability or supply chain requirements necessitate alternative sourcing.

Substiute Parts

KAP1104R

E-SwitchIn Stock: 1107KAP1104R Datasheet

Current PartRFQ

JS0304PP4-S

NKK SwitchesIn Stock: 857JS0304PP4-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KAP1104R is determined by strict alignment across the following critical parameters:

• Electrical Equivalence: Circuit type (SPST), position count (4), current rating (25mA), and voltage rating (24VDC) must match exactly
• Mechanical Compatibility: Mounting type (through hole, right angle), termination style (PC pin), and pitch spacing (0.100" / 2.54mm) must be identical
• Material & Contact Specifications: Contact material (phosphor bronze), contact finish (gold), and body material (PBT, glass filled) must correspond
• Compliance & Certification: RoHS3 compliance and MSL 1 rating must be maintained

The NKK Switches JS0304PP4-S meets all electrical and mechanical equivalence criteria, with documented compatibility across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the KAP1104R and JS0304PP4-S maintain Active product status with full RoHS3 compliance and unlimited moisture sensitivity ratings, ensuring regulatory alignment for current and future applications.

The primary design consideration between these parts is the actuator level configuration. The KAP1104R features a flush, recessed actuator at 0.402" (10.20mm) height, while the JS0304PP4-S provides a raised actuator at 0.362" (9.20mm) height. This difference may impact PCB layout clearance and user interface ergonomics depending on application requirements.

Operating temperature range differs between the two parts. The KAP1104R operates across -40°C to 85°C, while the JS0304PP4-S operates across -25°C to 70°C. Applications requiring extended low-temperature operation below -25°C or high-temperature operation above 70°C must retain the KAP1104R specification.

Both parts share identical electrical ratings (25mA at 24VDC), mechanical life (2,000 cycles), electrical life (2,000 cycles), and contact specifications (phosphor bronze with gold finish), confirming functional equivalence for standard switching applications.

Frequently Asked Questions (FAQ)

Q: Can the JS0304PP4-S directly replace the KAP1104R in all applications?

A: Direct replacement is valid for applications operating within the JS0304PP4-S temperature range (-25°C to 70°C) and where the raised actuator profile (0.362" height) accommodates PCB layout constraints. Applications requiring the extended temperature range of the KAP1104R (-40°C to 85°C) or the flush actuator profile must use the original part.

Q: What are the key electrical differences between these parts?

A: There are no electrical differences. Both parts are rated for 25mA at 24VDC with SPST 4-position configuration, identical contact materials (phosphor bronze with gold finish), and equivalent mechanical and electrical life ratings (2,000 cycles each).

Q: How do the physical dimensions affect substitution?

A: The height above board differs by 0.040" (1.00mm), with the KAP1104R at 0.402" and the JS0304PP4-S at 0.362". The actuator level also differs (flush/recessed versus raised). These dimensional differences may impact PCB clearance, overlay design, and user interface feel. Verify mechanical fit within your specific application before substitution.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the KAP1104R and JS0304PP4-S are RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings, meeting current regulatory standards for electronic component sourcing.

Q: What should be verified before implementing the JS0304PP4-S as a substitute?

A: Verify operating temperature requirements fall within -25°C to 70°C range, confirm PCB layout accommodates the 0.362" height and raised actuator profile, and validate that the 0.446" length (versus 0.461" for the KAP1104R) does not conflict with adjacent component placement.