SP10A DIP Switch SPST 10 Position Equivalent & Substitute Parts

Part Overview

The SP10A is a DIP switch manufactured by C&K, featuring a single-pole single-throw (SPST) configuration with 10 positions. This through-hole, right-angle mounted switch is rated for 10mA at 20VDC and utilizes a standard slide actuator with gold-plated beryllium copper contacts. The SP10A is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and component procurement.

Substiute Parts

SP10A

C&KIn Stock: 733SP10A Datasheet

Current PartRFQ

SPA10AB

C&KIn Stock: 920SPA10AB Datasheet

DirectRFQ

1977105-5

TE Connectivity ALCOSWITCH SwitchesIn Stock: 10441977105-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SP10A DIP switch are identified based on the following critical parameters that determine functional compatibility:

Direct Substitution Criteria:

• Circuit configuration (SPST)
• Number of positions (10)
• Current rating (10mA)
• Voltage rating (20VDC or higher)
• Actuator type (Slide, Standard)
• Mounting type (Through Hole, Right Angle)
• Pitch spacing (0.100" / 2.54mm)
• Contact material and finish compatibility

SPA10AB qualifies as a direct substitute, maintaining identical electrical specifications and mechanical form factor while offering active product status and improved compliance.

1977105-5 qualifies as a similar substitute with functional compatibility, though voltage rating differs (5VDC vs. 20VDC), requiring application-level verification for voltage-sensitive circuits.

Parameter Comparison

Engineering Selection Recommendations

SPA10AB is the primary substitute for SP10A applications. Both parts maintain identical electrical ratings (10mA, 20VDC), circuit configuration (SPST), and mechanical form factor (10-position, 0.100" pitch, through-hole right-angle mounting). SPA10AB offers the advantage of active product status and ROHS3 compliance, addressing regulatory requirements for new designs. The operating temperature range of SPA10AB (-30°C ~ 60°C) is narrower than SP10A (-20°C ~ 85°C); applications requiring the full upper temperature range of 85°C must be evaluated against the SPA10AB specification.

1977105-5 serves as a functional alternative for applications where voltage requirements do not exceed 5VDC. This TE Connectivity part maintains the same circuit configuration, position count, current rating, and mechanical mounting as SP10A, with an extended upper operating temperature of 85°C. The voltage rating of 5VDC is the primary limiting factor for this substitute; circuits designed for 20VDC operation cannot use this part. The height above board (0.244" vs. 0.169") and body material (PPS vs. PBT) represent secondary mechanical differences requiring PCB layout verification.

Frequently Asked Questions (FAQ)

Q: Can SPA10AB directly replace SP10A in existing designs?

A: SPA10AB is electrically and mechanically compatible with SP10A for applications operating at 20VDC or below. Both parts share identical SPST configuration, 10-position count, 10mA current rating, and 0.100" pitch. Verify that your application does not require operation above 60°C, as SPA10AB's upper temperature limit is 60°C compared to SP10A's 85°C. RoHS compliance requirements may favor SPA10AB for new procurement.

Q: Is 1977105-5 suitable for 20VDC applications?

A: No. The 1977105-5 is rated for 5VDC maximum. Applications requiring 20VDC operation must use SPA10AB or equivalent 20VDC-rated parts. Using 1977105-5 in a 20VDC circuit exceeds the component's voltage rating and creates reliability and safety risks.

Q: What are the key differences between SPA10AB and 1977105-5?

A: The primary differences are voltage rating (20VDC vs. 5VDC), manufacturer (C&K vs. TE Connectivity), body material (PPS vs. PPS), and height above board (0.169" vs. 0.244"). Both maintain the same circuit configuration, position count, current rating, and pitch. Selection depends on voltage requirements and PCB clearance constraints.

Q: Does packaging affect substitution compatibility?

A: Packaging format (tube, tray, or bulk) does not affect electrical or mechanical compatibility. SPA10AB is supplied in tube packaging, while SP10A packaging is not specified. Verify packaging requirements for your procurement and assembly processes, but packaging differences do not impact functional substitution.

Q: Are there temperature range limitations I should consider?

A: Yes. SP10A operates from -20°C to 85°C, while SPA10AB operates from -30°C to 60°C. If your application requires sustained operation above 60°C, SPA10AB is not suitable. The 1977105-5 supports -30°C to 85°C, making it suitable for high-temperature applications where voltage requirements are 5VDC or below.