SD04H0K DIP Switch Equivalent & Substitute Parts

Part Overview

The SD04H0K is a 4-position DIP switch manufactured by C&K, featuring SPST circuit configuration with 100mA at 25VDC rating. This component is designed for through-hole mounting applications requiring slide actuator operation. The SD04H0K is currently classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. Equivalent alternatives maintain the same electrical specifications and mechanical form factor while offering improved availability and compliance status.

Key Parameters

Parameter	Value
Circuit Configuration	SPST (Single Pole Single Throw)
Number of Positions	4
Current Rating	100mA
Voltage Rating	25VDC
Actuator Type	Slide (Standard)
Actuator Level	Flush, Recessed
Mounting Type	Through Hole
Pitch	0.100" (2.54mm)
Height Above Board	0.178" (4.52mm)
Termination Style	PC Pin
Operating Temperature Range	-40°C to 85°C
Mechanical Life	2,000 Cycles
Electrical Life	2,000 Cycles

Substitute Part Grouping Explanation

Substitute parts for the SD04H0K are identified based on strict equivalence across the following critical parameters: circuit configuration (SPST), number of positions (4), current rating (100mA minimum), voltage rating (25VDC minimum), actuator type (slide standard), mounting method (through hole), pitch spacing (0.100"), and physical height above board (0.178"). These parameters define the mechanical and electrical interchangeability of DIP switches within this product category.

The SD04H0B represents a direct manufacturer substitute from C&K, maintaining identical electrical and mechanical specifications while offering improved product status and compliance certifications. The 1825002-6 from TE Connectivity ALCOSWITCH Switches provides functional equivalence as a similar manufacturer alternative, meeting core electrical and mechanical requirements for DIP switch applications.

Parameter Comparison

Parameter	SD04H0K (Main)	SD04H0B (Direct)	1825002-6 (Similar)
Manufacturer	C&K	C&K	TE Connectivity ALCOSWITCH
Circuit	SPST	SPST	SPST
Number of Positions	4	4	4
Current Rating	100mA	100mA	Not Specified
Voltage Rating	25VDC	25VDC	Not Specified
Actuator Type	Slide (Standard)	Slide (Standard)	Standard
Actuator Level	Flush, Recessed	Flush, Recessed	Flush, Recessed
Mounting Type	Through Hole	Through Hole	Through Hole
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Not Specified
Height Above Board	0.178" (4.52mm)	0.178" (4.52mm)	Not Specified
Operating Temperature	-40°C to 85°C	-40°C to 85°C	Not Specified
Mechanical Life	2,000 Cycles	2,000 Cycles	Not Specified
Electrical Life	2,000 Cycles	2,000 Cycles	Not Specified
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The SD04H0B is the primary substitute for the SD04H0K. Both components are manufactured by C&K and share identical electrical ratings (100mA, 25VDC) and mechanical specifications (4-position, through-hole, 0.100" pitch). The SD04H0B offers the advantage of active product status and ROHS3 compliance, addressing the obsolescence and regulatory limitations of the SD04H0K. The SD04H0B is available in tube packaging with 1,260 units in stock.

The 1825002-6 from TE Connectivity ALCOSWITCH Switches serves as a secondary alternative for applications where multi-source qualification is required. This part maintains the core mechanical interface (4-position, through-hole, flush actuator) and is ROHS3 compliant with active product status. The 1825002-6 is available in bulk packaging with 1,069 units in stock. Specific electrical ratings for the 1825002-6 are not provided in available documentation; verification against application requirements is necessary before selection.

Frequently Asked Questions (FAQ)

Q: Can the SD04H0B directly replace the SD04H0K without PCB modifications?

A: Yes. Both parts share identical pitch spacing (0.100"), height above board (0.178"), and through-hole termination style. No PCB layout changes are required for substitution.

Q: What is the primary difference between SD04H0K and SD04H0B?

A: The SD04H0B is the active production equivalent with improved compliance status (ROHS3 compliant versus non-compliant) and better availability. Electrical and mechanical specifications are identical.

Q: Is the 1825002-6 mechanically compatible with SD04H0K PCB footprints?

A: The 1825002-6 maintains through-hole mounting with flush actuator configuration and standard pitch spacing consistent with DIP switch standards. However, complete electrical specifications are not provided in available data. Mechanical compatibility is established; electrical verification is recommended.

Q: What packaging options are available for these substitutes?

A: SD04H0B is supplied in tube packaging. The 1825002-6 is supplied in bulk packaging. Original SD04H0K packaging format is not specified in available inventory data.

Q: Are there temperature or environmental differences between these parts?

A: SD04H0K and SD04H0B both operate across -40°C to 85°C. Operating temperature range for 1825002-6 is not specified in available documentation.

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