SP04AB DIP Switch SPST 4-Position Equivalent & Substitute Parts

Part Overview

The SP04AB is a DIP switch manufactured by C&K, featuring a single-pole single-throw (SPST) configuration with 4 positions. This component is designed for through-hole, right-angle mounting applications requiring low-current switching at 10mA and 20VDC ratings. The SP04AB is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity. The SPA04AB represents the active-status equivalent from C&K's current product portfolio.

Substiute Parts

SP04AB

C&KIn Stock: 1086SP04AB Datasheet

Current PartRFQ

SPA04AB

C&KIn Stock: 1359SPA04AB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SPA04AB qualifies as a direct substitute for the SP04AB based on matching electrical and mechanical parameters. Substitution eligibility is determined by the following criteria:

Matching Parameters (Required for Substitution):

• Circuit configuration: SPST
• Number of positions: 4
• Current rating: 10mA
• Voltage rating: 20VDC
• Actuator type: Slide (Standard)
• Mounting type: Through Hole, Right Angle
• Contact material: Beryllium Copper
• Contact finish: Gold
• Pitch: 0.100" (2.54mm)
• Termination style: PC Pin
• Body material: Polyphenylene Sulfide (PPS)
• Moisture sensitivity level: 1 (Unlimited)

The SPA04AB maintains full compatibility with these core parameters, enabling direct substitution in applications originally designed for the SP04AB.

Parameter Comparison

Engineering Selection Recommendations

The SPA04AB is the appropriate substitute for the obsolete SP04AB. Both components share identical electrical specifications (SPST, 4-position, 10mA, 20VDC) and mechanical compatibility (through-hole, right-angle, 0.100" pitch). The SPA04AB offers the advantage of active product status, ensuring continued availability and supply chain support.

The SPA04AB carries ROHS3 compliance, whereas the SP04AB is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulations. The SPA04AB's operating temperature range (-30°C ~ 60°C) is narrower than the SP04AB (-20°C ~ 85°C); applications requiring the full SP04AB temperature envelope should verify SPA04AB suitability within their specific thermal requirements.

Physical dimensions differ slightly: the SPA04AB length is 0.542" (13.77mm) compared to the SP04AB at 0.498" (12.65mm). This 0.044" (1.12mm) difference should be evaluated against PCB layout constraints and mechanical clearances in the target application.

Frequently Asked Questions (FAQ)

Q: Can the SPA04AB directly replace the SP04AB in existing designs?

A: Yes, the SPA04AB provides direct electrical and mechanical substitution for the SP04AB. Both components feature identical SPST 4-position configuration, 10mA current rating, 20VDC voltage rating, and through-hole right-angle mounting with 0.100" pitch. Physical layout should accommodate the SPA04AB's slightly longer body (0.542" vs. 0.498").

Q: What is the significance of the RoHS compliance difference?

A: The SP04AB is RoHS non-compliant, while the SPA04AB is ROHS3 compliant. Applications subject to RoHS directives or customer requirements mandating RoHS compliance must use the SPA04AB. Non-regulated applications may use either component based on availability and supply chain considerations.

Q: Are there temperature range limitations when substituting the SPA04AB?

A: The SPA04AB operates within -30°C to 60°C, whereas the SP04AB operates within -20°C to 85°C. Applications requiring operation above 60°C or below -30°C should not use the SPA04AB. Verify the target application's thermal requirements against the SPA04AB specification before implementation.

Q: Does the length difference affect PCB layout compatibility?

A: The SPA04AB is 0.044" (1.12mm) longer than the SP04AB. PCB designs with tight mechanical clearances or space constraints should verify that this dimensional difference does not conflict with adjacent components, enclosure boundaries, or mechanical fixtures.

Q: What packaging formats are available for the SPA04AB?

A: The SPA04AB is supplied in Tube packaging. The SP04AB packaging format is not specified in the available data. Confirm packaging requirements for your procurement and assembly processes.