SDA02H0K Equivalent & Substitute Parts

Part Overview

The SDA02H0K is a DIP slide switch manufactured by C&K, configured as a single-pole single-throw (SPST) switch with 2 positions. It is rated for 25mA at 24VDC and features through-hole mounting with PC pin termination. The SDA02H0K is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical equivalence across circuit configuration, current rating, voltage rating, and mechanical compatibility including mounting type and pitch specifications.

Substiute Parts

SDA02H0K

C&KIn Stock: 917SDA02H0K Datasheet

Current PartRFQ

SDA02H0B

C&KIn Stock: 15236SDA02H0B Datasheet

DirectRFQ

1825002-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 12631825002-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SDA02H0K are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Requirements:

• Circuit configuration: SPST (single-pole single-throw)
• Number of positions: 2
• Current rating: 25mA minimum
• Voltage rating: 24VDC minimum

Mechanical Equivalence Requirements:

• Actuator type: Slide (Standard)
• Mounting type: Through Hole
• Termination style: PC Pin
• Pitch: 0.100" (2.54mm)

Substitute Classification:

Direct Manufacturer Substitute: SDA02H0B (C&K) — Same manufacturer, same series (SDA), identical electrical and mechanical specifications with active product status and improved compliance profile.

Similar Cross-Manufacturer Substitute: 1825002-1 (TE Connectivity ALCOSWITCH Switches) — Different manufacturer and series (ADF), but meets all electrical and mechanical equivalence criteria with active product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

SDA02H0B (Direct Manufacturer Substitute): This C&K part is the primary substitute for the obsolete SDA02H0K. It maintains identical electrical specifications and mechanical form factor while offering active product status and ROHS3 compliance. The operating temperature range extends to -40°C, providing broader environmental capability. Body material differs (PPS vs. PPA), but both materials are suitable for the specified electrical and thermal requirements. This part is recommended for designs requiring same-manufacturer continuity and compliance with current regulatory standards.

1825002-1 (Cross-Manufacturer Substitute): This TE Connectivity ALCOSWITCH part provides electrical and mechanical equivalence from a different manufacturer. It meets all core substitution criteria with active product status and ROHS3 compliance. Operating temperature range is -30°C to 85°C. Contact material is specified as Copper Alloy rather than Beryllium Copper, and body material is PPS. This part is suitable for applications where cross-manufacturer sourcing is acceptable and provides supply chain diversification.

Selection between SDA02H0B and 1825002-1 depends on procurement strategy, supply availability, and design requirements for manufacturer consistency versus supply chain redundancy.

Frequently Asked Questions (FAQ)

Q: What makes SDA02H0B a direct substitute for SDA02H0K?

A: SDA02H0B maintains identical electrical specifications (SPST, 2 positions, 25mA, 24VDC) and mechanical compatibility (through-hole mounting, PC pin termination, 0.100" pitch, slide actuator). Both are C&K SDA series parts. The primary difference is product status: SDA02H0K is obsolete while SDA02H0B is active. SDA02H0B also offers improved compliance (ROHS3) and extended operating temperature range (-40°C to 85°C versus -20°C to 85°C).

Q: Can 1825002-1 be used as a direct replacement for SDA02H0K?

A: Yes, 1825002-1 meets all electrical and mechanical substitution criteria. It is a different manufacturer (TE Connectivity) and series (ADF), but provides equivalent circuit configuration, current and voltage ratings, actuator type, mounting method, and pitch. It is active product status with ROHS3 compliance. The contact material (Copper Alloy vs. Beryllium Copper) and body material (PPS vs. PPA) differ, but both configurations are electrically and mechanically suitable for the specified application.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: circuit configuration (SPST), number of positions (2), current rating (25mA minimum), voltage rating (24VDC minimum), actuator type (slide standard), mounting type (through hole), termination style (PC pin), and pitch (0.100" / 2.54mm). All substitute parts must match these parameters to ensure functional and mechanical compatibility.

Q: Does the difference in body material between SDA02H0K (PPA) and its substitutes (PPS) affect compatibility?

A: No. Both Polyphthalamide (PPA) and Polyphenylene Sulfide (PPS) are suitable for the specified electrical, thermal, and environmental requirements. PPS offers enhanced chemical resistance and thermal stability, making it a suitable material for active product lines. The material difference does not affect electrical performance or mechanical fit in standard through-hole applications.

Q: Are there packaging differences between the substitute parts?

A: SDA02H0K packaging is listed as "-" (unspecified). SDA02H0B and 1825002-1 are both supplied in Tube packaging. Tube packaging is standard for DIP switches and does not affect component functionality or PCB compatibility.

Q: What is the significance of the extended operating temperature range in SDA02H0B?

A: SDA02H0B operates from -40°C to 85°C, compared to SDA02H0K's -20°C to 85°C range. This extended lower temperature limit provides greater environmental flexibility for applications exposed to cold conditions. For applications operating within the original -20°C to 85°C range, both parts are functionally equivalent.