SP04B DIP Switch SPST 4-Position Equivalent & Substitute Parts

Part Overview

The SP04B is a DIP switch manufactured by C&K, featuring a single-pole single-throw (SPST) configuration with 4 positions. This through-hole mounted component is rated for 10mA at 20VDC and utilizes a slide actuator with standard (flush, recessed) actuation level. The SP04B is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

SP04B

C&KIn Stock: 1042SP04B Datasheet

Current PartRFQ

SPA04B

C&KIn Stock: 13763SPA04B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SP04B is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: Must be SPST
• Number of Positions: Must be 4
• Current Rating: Must be 10mA minimum
• Voltage Rating: Must be 20VDC minimum
• Actuator Type: Must be Slide (Standard)
• Mounting Type: Must be Through Hole
• Pitch: Must be 0.100" (2.54mm)
• Contact Material: Must be Beryllium Copper
• Contact Finish: Must be Gold
• Termination Style: Must be PC Pin

The SPA04B meets all substitution criteria. While dimensional variations exist (height above board and length differ), these do not affect electrical compatibility or functional performance in standard PCB applications. The SPA04B maintains identical electrical specifications and mechanical interface requirements.

Parameter Comparison

Engineering Selection Recommendations

The SPA04B is the direct substitute for the obsolete SP04B. Both components share identical electrical and mechanical specifications, ensuring functional equivalence in circuit applications. The SPA04B offers the additional advantage of active product status, ensuring continued availability and supply chain reliability.

The SPA04B achieves ROHS3 compliance, whereas the SP04B is non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the SPA04B is the appropriate selection. For legacy systems or applications without compliance mandates, both parts are electrically interchangeable.

Dimensional differences between the SP04B and SPA04B (height above board: 0.196" vs. 0.244"; length: 0.498" vs. 0.542") are minor and do not affect standard PCB layout or mechanical clearance in typical applications. Verification of board-level clearance is recommended for space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can the SPA04B directly replace the SP04B without PCB modifications?

A: Yes. The SPA04B maintains identical pitch (0.100"), termination style (PC Pin), and mounting type (Through Hole). Dimensional variations are minor and do not require PCB redesign in standard applications. Board-level clearance should be verified for constrained layouts.

Q: What is the primary reason to transition from SP04B to SPA04B?

A: The SP04B is obsolete. The SPA04B is an active product from the same manufacturer with identical electrical specifications, ensuring long-term availability and supply continuity.

Q: Are there compliance differences between SP04B and SPA04B?

A: Yes. The SPA04B is ROHS3 compliant, while the SP04B is non-compliant. For applications requiring RoHS certification, the SPA04B is mandatory. Both are REACH Unaffected.

Q: Do operating temperature ranges differ between these parts?

A: Yes. The SP04B operates from -20°C to 85°C, while the SPA04B operates from -30°C to 60°C. Application temperature requirements must be verified to ensure the SPA04B meets thermal specifications.

Q: Is packaging different between SP04B and SPA04B?

A: Yes. The SP04B is supplied with standard packaging (dash notation), while the SPA04B is supplied in Tube packaging. This does not affect component functionality or electrical performance.

Q: What is the mechanical life expectancy for both parts?

A: Both the SP04B and SPA04B are rated for 1,000 mechanical cycles and 1,000 electrical cycles, providing equivalent operational durability.