SDA04H0K Equivalent & Substitute Parts

Part Overview

The SDA04H0K is a 4-position DIP slide switch manufactured by C&K, rated for 25mA at 24VDC with through-hole mounting. This component features beryllium copper contacts with gold finish, designed for applications requiring reliable switching in compact form factors. The SDA04H0K is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SDA04H0K

C&KIn Stock: 1118SDA04H0K Datasheet

Current PartRFQ

SDA04H0B

C&KIn Stock: 1251SDA04H0B Datasheet

DirectRFQ

1825002-5

TE Connectivity ALCOSWITCH SwitchesIn Stock: 156711825002-5 Datasheet

SimilarRFQ

1825002-6

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11031825002-6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SDA04H0K is determined by strict equivalence across the following critical parameters:

• Circuit configuration (SPST)
• Number of positions (4)
• Current rating (25mA minimum)
• Voltage rating (24VDC minimum)
• Actuator type (Slide, Standard)
• Actuator level (Flush, Recessed)
• Mounting type (Through Hole)
• Termination style (PC Pin)
• Pitch (0.100" / 2.54mm)
• Contact finish (Gold)

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalent: SDA04H0B is manufactured by C&K and maintains identical electrical specifications and mechanical form factor. This part represents the active production successor to the obsolete SDA04H0K.

Cross-Manufacturer Equivalents: Parts 1825002-5 and 1825002-6 are manufactured by TE Connectivity ALCOSWITCH Switches and meet all critical electrical and mechanical parameters. These parts provide functional interchangeability with minor dimensional variations within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

SDA04H0B is the primary recommended substitute. As the active production equivalent from C&K, it maintains full electrical and mechanical compatibility with the SDA04H0K. The SDA04H0B offers improved compliance status (ROHS3 Compliant versus non-compliant), extended operating temperature range (-40°C to 85°C versus -20°C to 85°C), and superior body material (PPS versus PPA). Packaging is available in tube format.

1825002-5 provides cross-manufacturer equivalence from TE Connectivity ALCOSWITCH Switches. All critical electrical parameters match the original specification. Dimensional variations are minimal (height 0.189" versus 0.183", length 0.478" versus 0.476"), remaining within standard PCB layout tolerances. This part is ROHS3 compliant and offers extended operating temperature range (-30°C to 85°C). Tube packaging is standard.

1825002-6 is available from TE Connectivity ALCOSWITCH Switches in bulk packaging. Detailed electrical specifications are not provided in the datasheet; confirmation of 25mA/24VDC ratings is required before selection for new designs.

Frequently Asked Questions (FAQ)

Q: Can SDA04H0B be used as a direct replacement for SDA04H0K in existing assemblies?

A: Yes. SDA04H0B maintains identical circuit configuration (SPST), position count (4), current rating (25mA), voltage rating (24VDC), actuator type (Slide Standard), mounting type (Through Hole), and pitch (0.100"). The 0.006" height difference (0.183" versus 0.189") is within standard PCB clearance tolerances and does not affect functionality.

Q: What are the key differences between C&K SDA04H0B and TE Connectivity 1825002-5?

A: Both parts meet all critical electrical specifications. Primary differences are manufacturer, body material (PPS in both), and minor dimensional variations. The 1825002-5 offers slightly extended operating temperature range (-30°C versus -40°C lower limit). Contact material differs slightly (Copper Alloy versus Beryllium Copper), though both are gold-finished and rated for identical electrical performance.

Q: Are all substitute parts RoHS compliant?

A: SDA04H0B and both 1825002 variants are ROHS3 compliant. The original SDA04H0K is non-compliant. For applications requiring RoHS compliance, SDA04H0B or TE Connectivity equivalents are required.

Q: What packaging options are available?

A: SDA04H0B is supplied in tube packaging. TE Connectivity 1825002-5 is supplied in tube packaging. TE Connectivity 1825002-6 is supplied in bulk packaging. Tape seal packaging is associated with the obsolete SDA04H0K.

Q: Can 1825002-6 be used without full electrical specification confirmation?

A: 1825002-6 datasheet does not provide complete electrical ratings. Confirmation of 25mA current rating and 24VDC voltage rating from TE Connectivity is necessary before selection for applications where these specifications are critical.

Q: Are there any PCB layout considerations when substituting these parts?

A: All substitute parts maintain 0.100" (2.54mm) pitch and through-hole PC pin termination. Height variations are minimal (0.006" maximum). No PCB layout modifications are required for mechanical compatibility.