SP02AB DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The SP02AB is a slide-actuated DIP switch manufactured by C&K, designed for through-hole, right-angle mounting applications requiring single-pole, single-throw (SPST) switching at 10mA and 20VDC. This component features a 2-position configuration with beryllium copper contacts finished in gold, suitable for applications demanding reliable low-voltage switching with washable PCB compatibility.

The SP02AB is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance or redesign initiatives.

Key Parameters

Parameter	Value
Circuit Configuration	SPST
Number of Positions	2
Current Rating	10mA
Voltage Rating	20VDC
Actuator Type	Slide (Standard)
Mounting Type	Through Hole, Right Angle
Termination Style	PC Pin
Pitch	0.100" (2.54mm)
Contact Material	Beryllium Copper
Contact Finish	Gold
Body Material	Polyphenylene Sulfide (PPS)
Mechanical Life	1,000 Cycles
Electrical Life	1,000 Cycles

Substitute Part Grouping Explanation

Substitution eligibility for the SP02AB is determined by strict equivalence across the following critical parameters:

Circuit Configuration: Must be SPST
Number of Positions: Must be 2
Current Rating: Must be 10mA
Voltage Rating: Must be 20VDC
Actuator Type: Must be Slide (Standard)
Mounting Type: Must be Through Hole, Right Angle
Termination Style: Must be PC Pin
Pitch: Must be 0.100" (2.54mm)
Contact Material: Must be Beryllium Copper
Contact Finish: Must be Gold

The SPA02AB meets all mandatory substitution criteria. Variations in operating temperature range, physical dimensions (height and length), packaging format, and product status do not preclude functional equivalence when electrical and mechanical parameters remain constant.

Parameter Comparison

Parameter	SP02AB (Main Part)	SPA02AB (Substitute)
Manufacturer	C&K	C&K
Circuit Configuration	SPST	SPST
Number of Positions	2	2
Current Rating	10mA	10mA
Voltage Rating	20VDC	20VDC
Actuator Type	Slide (Standard)	Slide (Standard)
Actuator Level	Flush, Recessed	Flush, Recessed
Contact Material	Beryllium Copper	Beryllium Copper
Contact Finish	Gold	Gold
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination Style	PC Pin	PC Pin
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Body Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS)
Washable	Yes	Yes
Mechanical Life	1,000 Cycles	1,000 Cycles
Electrical Life	1,000 Cycles	1,000 Cycles
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Operating Temperature	-20°C ~ 85°C	-30°C ~ 60°C
Height Above Board	0.169" (4.30mm)	0.169" (4.30mm)
Length	0.298" (7.58mm)	0.342" (8.68mm)
Packaging	-	Tube

Engineering Selection Recommendations

The SPA02AB is a direct functional equivalent to the SP02AB across all critical electrical and mechanical parameters. The SPA02AB is classified as Active product status, ensuring ongoing availability and supply chain support compared to the obsolete SP02AB.

The SPA02AB achieves ROHS3 compliance, whereas the SP02AB is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulatory requirements or customer specifications mandating RoHS-compliant components.

Operating temperature ranges differ between the two parts. The SP02AB operates from -20°C to 85°C, while the SPA02AB operates from -30°C to 60°C. Design applications requiring operation above 60°C or below -30°C must account for these temperature envelope differences.

Physical dimensions show minor variation in length (0.298" versus 0.342"), while height above board remains identical at 0.169" (4.30mm). PCB layout and mechanical clearance verification is recommended when substituting in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the SPA02AB directly replace the SP02AB in existing designs?

A: Yes, the SPA02AB is electrically and mechanically equivalent to the SP02AB. All switching parameters, contact ratings, mounting configuration, and termination style are identical. Physical dimension differences (length) are minor and typically do not impact PCB layout in standard applications.

Q: What is the significance of the product status difference?

A: The SP02AB is obsolete, indicating discontinued manufacturing and limited availability. The SPA02AB is Active, ensuring reliable supply chain access and ongoing manufacturer support. For new designs or legacy system maintenance, the SPA02AB is the recommended selection.

Q: Does RoHS compliance affect functional performance?

A: RoHS compliance does not alter electrical or mechanical performance. The SPA02AB's ROHS3 compliance is a manufacturing and material composition distinction. Applications subject to RoHS regulatory requirements or customer specifications must use the SPA02AB.

Q: Are there temperature range limitations when substituting?

A: The SPA02AB operates within -30°C to 60°C, compared to the SP02AB's -20°C to 85°C range. Applications requiring operation above 60°C or below -30°C must verify that the SPA02AB's temperature envelope meets system requirements.

Q: What packaging format is available for the SPA02AB?

A: The SPA02AB is supplied in Tube packaging, suitable for automated assembly and standard component handling processes.

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