SP08B DIP Switch SPST 8-Position Equivalent & Substitute Parts

Part Overview

The SP08B is a DIP switch manufactured by C&K, featuring an 8-position SPST (Single Pole Single Throw) configuration with a slide actuator. This component is rated for 10mA at 20VDC and is designed for through-hole mounting with PC pin termination. The SP08B is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity.

Substiute Parts

SP08B

C&KIn Stock: 993SP08B Datasheet

Current PartRFQ

SPA08B

C&KIn Stock: 1252SPA08B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SP08B is determined by the following critical parameters:

• Circuit Configuration: Must be SPST
• Number of Positions: Must be 8
• Current Rating: Must support minimum 10mA
• Voltage Rating: Must support minimum 20VDC
• Actuator Type: Must be Slide (Standard)
• Mounting Type: Must be Through Hole
• Pitch: Must be 0.100" (2.54mm)
• Contact Material & Finish: Must be Beryllium Copper with Gold finish
• Termination Style: Must be PC Pin

The SPA08B meets all substitution criteria and is classified as a direct equivalent to the SP08B.

Parameter Comparison

Engineering Selection Recommendations

The SPA08B is the direct substitute for the SP08B. Both components share identical electrical and mechanical specifications, including circuit configuration, position count, current and voltage ratings, actuator type, and mounting characteristics.

The primary distinction between these parts is product status and regulatory compliance. The SP08B is obsolete, while the SPA08B is active and carries ROHS3 compliance certification. For new designs or production continuity, the SPA08B is the appropriate selection. Physical dimensions show minor variations: the SPA08B has a height above board of 0.244" (6.20mm) compared to the SP08B's 0.196" (4.99mm), and a length of 0.942" (23.92mm) versus 0.898" (22.82mm). Operating temperature ranges differ slightly, with the SPA08B rated for -30°C to 60°C versus the SP08B's -20°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can the SPA08B directly replace the SP08B in existing designs?

A: Yes. The SPA08B meets all functional and electrical requirements of the SP08B. Both components feature identical SPST 8-position configuration, 10mA current rating, 20VDC voltage rating, slide actuator, through-hole mounting, and PC pin termination with 0.100" pitch. Verification of physical clearance is recommended due to minor dimensional differences.

Q: What are the physical differences between SP08B and SPA08B?

A: The SPA08B is slightly taller and longer than the SP08B. Height above board: SPA08B 0.244" (6.20mm) versus SP08B 0.196" (4.99mm). Overall length: SPA08B 0.942" (23.92mm) versus SP08B 0.898" (22.82mm). These differences should be evaluated against PCB layout constraints.

Q: What is the difference in operating temperature range?

A: The SP08B operates from -20°C to 85°C, while the SPA08B operates from -30°C to 60°C. For applications requiring the full -20°C to 85°C range, thermal performance must be verified against the SPA08B's narrower specification.

Q: Why is RoHS compliance different between these parts?

A: The SP08B is RoHS non-compliant, while the SPA08B is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the SPA08B is the appropriate selection.

Q: Are packaging differences significant?

A: The SP08B is supplied with standard packaging, while the SPA08B is supplied in tube packaging. This affects handling, storage, and automated assembly considerations but does not impact electrical or mechanical performance.