C&K SP02 DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The C&K SP02 is a single-pole single-throw (SPST) DIP switch with 2 positions, rated for 10mA at 20VDC. This through-hole mounted component features a slide actuator with beryllium copper contacts finished in gold. The SP02 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

SP02

C&KIn Stock: 975SP02 Datasheet

Current PartRFQ

SPA02B

C&KIn Stock: 1573SPA02B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The C&K SPA02B qualifies as a direct substitute for the SP02 based on the following matching parameters:

• Circuit configuration: Both are SPST
• Number of positions: Both have 2 positions
• Current rating: Both rated at 10mA
• Voltage rating: Both rated at 20VDC
• Actuator type: Both use slide (standard) actuators
• Mounting type: Both are through-hole mounted
• Termination style: Both use PC pins
• Pitch: Both use 0.100" (2.54mm) pitch
• Contact material: Both use beryllium copper
• Contact finish: Both use gold plating

The SPA02B represents an active product with improved compliance status, making it suitable for new designs and production applications where the obsolete SP02 is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The SPA02B is the direct equivalent for the obsolete SP02. Both components share identical electrical specifications (SPST, 2-position, 10mA, 20VDC) and mechanical interfaces (through-hole, PC pin termination, 0.100" pitch). The SPA02B offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance versus RoHS non-compliance of the SP02
• Polyphenylene Sulfide (PPS) body material provides enhanced chemical and thermal resistance compared to the SP02's polybutylene terephthalate (PBT)

Physical dimensions differ slightly: the SPA02B has a height of 0.244" (6.20mm) versus the SP02's 0.196" (4.99mm), and a length of 0.342" (8.68mm) versus 0.298" (7.58mm). Operating temperature ranges differ, with the SP02 rated -20°C to 85°C and the SPA02B rated -30°C to 60°C. These differences must be evaluated against specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the SPA02B be used as a direct replacement for the SP02 in existing designs?

A: The SPA02B is electrically and functionally equivalent to the SP02 for SPST switching applications at 10mA and 20VDC. However, the slightly larger physical dimensions (height and length) must be verified against PCB layout constraints before implementation.

Q: What is the primary reason for substituting the SP02?

A: The SP02 is classified as obsolete. The SPA02B is an active product from the same manufacturer with identical electrical specifications, making it the appropriate replacement for production and new design applications.

Q: Are there packaging differences between SP02 and SPA02B?

A: The SP02 is supplied with standard packaging, while the SPA02B is supplied in tube packaging. Both components use identical through-hole PC pin termination and 0.100" pitch.

Q: How do the operating temperature ranges compare?

A: The SP02 operates from -20°C to 85°C, while the SPA02B operates from -30°C to 60°C. Applications requiring the full upper temperature range of the SP02 must be evaluated against the SPA02B's maximum operating temperature of 60°C.

Q: What is the difference in body material between these parts?

A: The SP02 uses polybutylene terephthalate (PBT), while the SPA02B uses polyphenylene sulfide (PPS). PPS offers superior chemical resistance and thermal stability, making the SPA02B suitable for more demanding environmental conditions.

Q: Does the SPA02B meet RoHS requirements?

A: Yes, the SPA02B is ROHS3 compliant, whereas the SP02 is RoHS non-compliant. This makes the SPA02B suitable for applications and markets requiring RoHS compliance.