SP04 DIP Switch SPST 4 Position Equivalent & Substitute Parts

Part Overview

The SP04 is a 4-position DIP switch with SPST (Single Pole Single Throw) circuit configuration, rated for 10mA at 20VDC. This component features a slide actuator with through-hole mounting and gold-plated beryllium copper contacts. The SP04 is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

SP04

C&KIn Stock: 952SP04 Datasheet

Current PartRFQ

SPA04B

C&KIn Stock: 13763SPA04B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SPA04B qualifies as a direct substitute for the SP04 based on the following critical parameters:

• Circuit configuration matches: SPST
• Position count matches: 4 positions
• Electrical ratings match: 10mA at 20VDC
• Actuator type matches: Slide (Standard)
• Mounting method matches: Through Hole
• Pitch matches: 0.100" (2.54mm)
• Contact material matches: Beryllium Copper
• Contact finish matches: Gold
• Termination style matches: PC Pin

The SPA04B represents an active product from the same manufacturer (C&K) with identical functional and electrical specifications, making it suitable for direct replacement in applications currently using the obsolete SP04.

Parameter Comparison

Engineering Selection Recommendations

The SPA04B is the appropriate substitute for the obsolete SP04 in new designs and ongoing production. The SPA04B maintains all critical electrical and mechanical specifications while offering the advantage of active product status and ROHS3 compliance. The SPA04B's extended lower operating temperature range (-30°C) provides additional thermal margin compared to the SP04 (-20°C), though the upper temperature limit is reduced (60°C versus 85°C). Physical dimensions differ slightly, with the SPA04B measuring 0.048" (1.12mm) taller and 0.044" (1.12mm) longer; these dimensional variations must be verified against PCB layout constraints before implementation. The body material change from PBT to PPS in the SPA04B does not affect functional compatibility for the specified electrical ratings and environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the SPA04B directly replace the SP04 in existing assemblies?

A: The SPA04B is electrically and functionally equivalent to the SP04 across all critical parameters: circuit configuration, position count, current and voltage ratings, actuator type, mounting method, and pitch. Physical dimensions differ slightly; verify that the increased height (0.244" versus 0.196") and length (0.542" versus 0.498") do not conflict with PCB layout or enclosure constraints.

Q: What is the significance of the product status change from Obsolete to Active?

A: The SP04 is no longer manufactured. The SPA04B is an active product with current manufacturing support, ensuring long-term availability and supply chain continuity for new designs and production runs.

Q: How do the operating temperature ranges differ, and does this affect substitution?

A: The SP04 operates from -20°C to 85°C, while the SPA04B operates from -30°C to 60°C. The SPA04B provides lower temperature capability but has a reduced upper limit. Verify that your application's operating temperature range falls within -30°C to 60°C for full compatibility.

Q: What changed in the body material, and does it impact performance?

A: The SP04 uses Polybutylene Terephthalate (PBT), while the SPA04B uses Polyphenylene Sulfide (PPS). Both materials are suitable for the specified electrical ratings and environmental conditions. The material change does not affect functional compatibility.

Q: Why is RoHS compliance important for this substitution?

A: The SP04 is RoHS non-compliant, while the SPA04B is ROHS3 compliant. If your application or market requires RoHS compliance, the SPA04B satisfies this regulatory requirement.

Q: Are there any packaging differences between SP04 and SPA04B?

A: The SP04 is packaged with a dash designation (unspecified), while the SPA04B is supplied in Tube packaging. Verify that tube packaging is compatible with your assembly and handling processes.