SP08 DIP Switch SPST 8 Position Equivalent & Substitute Parts

Part Overview

The SP08 is an 8-position DIP switch manufactured by C&K, featuring SPST (Single Pole Single Throw) circuit configuration with 10mA current rating and 20VDC voltage rating. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The SP08 utilizes through-hole mounting with PC pin termination and beryllium copper contacts finished in gold.

Substiute Parts

SP08

C&KIn Stock: 890SP08 Datasheet

Current PartRFQ

SPA08B

C&KIn Stock: 1252SPA08B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SP08 is determined by strict equivalence across the following critical parameters:

Circuit configuration must remain SPST to maintain identical switching functionality. The 8-position count is mandatory for pin-compatible board layouts. Current rating of 10mA and voltage rating of 20VDC establish the electrical operating envelope and must not be exceeded in substitute selection. Through-hole mounting with PC pin termination and 0.100" pitch are required for mechanical and electrical compatibility with existing PCB designs. Contact material (beryllium copper) and gold finish ensure equivalent electrical performance and reliability characteristics.

The SPA08B qualifies as a direct substitute based on matching all critical parameters: identical SPST circuit, 8 positions, 10mA current, 20VDC voltage, through-hole mounting, PC pin termination, beryllium copper contacts with gold finish, and 0.100" pitch spacing.

Parameter Comparison

Engineering Selection Recommendations

The SPA08B is the qualified direct substitute for the SP08. Both components share identical electrical and mechanical specifications across all critical parameters required for PCB compatibility and circuit functionality. The primary distinction is product status: the SP08 is obsolete while the SPA08B is active production.

From a compliance perspective, the SPA08B provides superior regulatory standing. It achieves ROHS3 compliance, whereas the SP08 is non-compliant. For new designs or procurement requiring regulatory adherence, the SPA08B is the appropriate selection. Both components maintain REACH Unaffected status and share identical ECCN and HTSUS classifications.

Physical dimensions show minor variations: the SPA08B height above board is 0.244" (6.20mm) compared to SP08 at 0.196" (4.99mm), and length is 0.942" (23.92mm) versus 0.898" (22.82mm). These dimensional differences do not affect electrical compatibility but should be verified against PCB layout constraints and enclosure clearances.

Operating temperature ranges differ: SP08 operates -20°C to 85°C while SPA08B operates -30°C to 60°C. Application thermal requirements must be evaluated against these specifications.

Frequently Asked Questions (FAQ)

Q: Can the SPA08B directly replace the SP08 in existing PCB designs?

A: Yes. The SPA08B is mechanically and electrically compatible with the SP08. Both components feature identical pitch (0.100"), through-hole mounting, PC pin termination, and electrical ratings. Physical dimensions differ slightly; verify clearance against your specific PCB layout and enclosure design.

Q: What is the primary reason to transition from SP08 to SPA08B?

A: The SP08 is obsolete. The SPA08B is the active production equivalent from C&K, ensuring long-term availability and supply chain continuity. Additionally, the SPA08B achieves ROHS3 compliance, addressing regulatory requirements that the SP08 does not meet.

Q: Are there electrical performance differences between SP08 and SPA08B?

A: No. Both components share identical circuit configuration (SPST), current rating (10mA), voltage rating (20VDC), contact material (beryllium copper with gold finish), and mechanical life (1,000 cycles). Electrical performance is equivalent.

Q: What packaging differences exist between these parts?

A: The SP08 packaging specification is not provided in the available data. The SPA08B is supplied in tube packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: Should operating temperature range differences affect my selection?

A: Evaluate your application's thermal environment against both specifications. The SP08 supports -20°C to 85°C operation, while the SPA08B supports -30°C to 60°C. If your application requires operation above 60°C or below -30°C, verify compatibility with your specific thermal profile.

Q: Are both parts RoHS compliant?

A: No. The SP08 is RoHS non-compliant. The SPA08B is ROHS3 compliant. For applications or markets requiring RoHS compliance, the SPA08B is mandatory.