SP04A DIP Switch SPST 4 Position Equivalent & Substitute Parts

Part Overview

The SP04A is a slide-actuated DIP switch manufactured by C&K, configured as a single-pole single-throw (SPST) switch with 4 positions. It is rated for 10mA at 20VDC and features through-hole, right-angle mounting with PC pin termination. The SP04A is classified as obsolete, making identification of functionally equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SP04A

C&KIn Stock: 1066SP04A Datasheet

Current PartRFQ

SPA04AB

C&KIn Stock: 1359SPA04AB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SP04A is determined by equivalence across the following critical parameters:

• Circuit Configuration: Both parts must be SPST
• Number of Positions: Both parts must have 4 positions
• Current Rating: Both parts must support 10mA minimum
• Voltage Rating: Both parts must support 20VDC minimum
• Actuator Type: Both parts must use slide actuator
• Mounting Type: Both parts must be through-hole, right-angle
• Termination Style: Both parts must use PC pin termination
• Pitch: Both parts must maintain 0.100" (2.54mm) pitch

The SPA04AB meets all these criteria and is therefore a direct functional equivalent to the SP04A.

Parameter Comparison

Engineering Selection Recommendations

The SPA04AB is the direct substitute for the SP04A. Both parts are manufactured by C&K and maintain identical electrical and mechanical specifications across all critical parameters. The SPA04AB offers the advantage of active product status, ensuring continued availability and support. Additionally, the SPA04AB achieves ROHS3 compliance, whereas the SP04A is non-compliant. For new designs or redesigns, the SPA04AB is the appropriate selection. For legacy systems currently using the SP04A, the SPA04AB provides a drop-in replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the SPA04AB be used as a direct replacement for the SP04A in existing designs?

A: Yes. The SPA04AB maintains identical electrical ratings (10mA, 20VDC), circuit configuration (SPST, 4 positions), and mechanical form factor (through-hole, right-angle, 0.100" pitch). No circuit modifications are required.

Q: What are the differences between SP04A and SPA04AB?

A: The primary differences are product status, body material, operating temperature range, physical length, and regulatory compliance. The SP04A is obsolete with a PBT body and -20°C to 85°C operating range. The SPA04AB is active with a PPS body, -30°C to 60°C operating range, and ROHS3 compliance.

Q: Does the change in body material from PBT to PPS affect compatibility?

A: No. Both materials are suitable for the specified electrical and mechanical requirements. The change in body material does not affect electrical performance or mechanical fit in standard through-hole applications.

Q: What is the packaging difference between these parts?

A: The SP04A is supplied in standard packaging, while the SPA04AB is supplied in tube packaging. This affects handling and storage but does not impact electrical or mechanical performance.

Q: Is the SPA04AB suitable for applications requiring RoHS compliance?

A: Yes. The SPA04AB is ROHS3 compliant, making it suitable for applications with RoHS requirements. The SP04A is non-compliant and should not be used in RoHS-restricted applications.