SDA04H0SK Equivalent & Substitute Parts

Part Overview

The SDA04H0SK is a DIP slide switch manufactured by C&K, featuring SPST (Single Pole Single Throw) configuration with 4 positions, rated for 25mA at 24VDC. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The SDA04H0SK remains functionally viable but active alternatives are available to ensure long-term component availability and compliance with current standards.

Substiute Parts

SDA04H0SK

C&KIn Stock: 909SDA04H0SK Datasheet

Current PartRFQ

SDA04H0SB

C&KIn Stock: 1475SDA04H0SB Datasheet

DirectRFQ

1-1825059-7

TE Connectivity ALCOSWITCH SwitchesIn Stock: 168941-1825059-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SDA04H0SK is determined by strict equivalence across the following critical parameters: SPST circuit configuration, 4-position count, 25mA current rating, 24VDC voltage rating, slide actuator type, surface mount configuration, gull wing termination, and 0.100" pitch. All identified substitutes maintain these core electrical and mechanical specifications.

Direct Substitute (C&K SDA04H0SB): Identical electrical ratings and mechanical form factor. Differs in body material (PPS vs. PPA), operating temperature range (-40°C to 85°C vs. -20°C to 85°C), and RoHS compliance status (ROHS3 Compliant vs. non-compliant). Product status is active.

Similar Substitute (TE Connectivity 1-1825059-7): Maintains all critical electrical parameters and mechanical compatibility. Differs in contact material specification (Copper Alloy vs. Beryllium Copper), height tolerance (0.177" vs. 0.175"), length tolerance (0.478" vs. 0.476"), operating temperature range (-30°C to 85°C), and RoHS compliance status (ROHS3 Compliant). Product status is active.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: SDA04H0SB is the preferred substitute. It maintains identical electrical and mechanical specifications to the SDA04H0SK while offering active product status and ROHS3 compliance. The extended operating temperature range (-40°C to 85°C) provides additional thermal margin compared to the original part.

For Existing Inventory Management: SDA04H0SK components currently in stock remain functionally equivalent and may continue to be used in applications where RoHS compliance is not a requirement. Transition planning to SDA04H0SB is recommended for long-term supply chain stability.

For Cross-Manufacturer Compatibility: TE Connectivity 1-1825059-7 serves as an alternative when C&K sourcing is constrained. Dimensional tolerances (height 0.177" vs. 0.175", length 0.478" vs. 0.476") are within typical PCB layout margins for surface mount applications. This part is ROHS3 compliant and maintains active product status.

Frequently Asked Questions (FAQ)

Q: Can SDA04H0SB be used as a direct replacement for SDA04H0SK in existing designs?

A: Yes. Both parts maintain identical electrical ratings (25mA, 24VDC, SPST, 4-position), identical mechanical form factor (surface mount, gull wing termination, 0.100" pitch), and identical height above board (0.175"). The SDA04H0SB offers improved compliance status and extended temperature range.

Q: What are the dimensional differences between SDA04H0SK and 1-1825059-7?

A: Height above board differs by 0.002" (0.177" vs. 0.175"), and length differs by 0.002" (0.478" vs. 0.476"). These tolerances are within standard PCB design margins for surface mount components and do not affect electrical compatibility or mechanical fit in standard applications.

Q: Is the contact material difference between Beryllium Copper and Copper Alloy significant for substitution?

A: Both materials provide gold-plated contact surfaces and are rated for identical electrical parameters (25mA, 24VDC). The contact material difference does not affect functional compatibility in the specified electrical environment.

Q: What is the impact of body material change from PPA to PPS?

A: Polyphenylene Sulfide (PPS) offers superior thermal and chemical resistance compared to Polyphthalamide (PPA). This material change supports the extended operating temperature range in SDA04H0SB (-40°C to 85°C vs. -20°C to 85°C) and improves long-term reliability in demanding environments.

Q: Are there packaging differences between these parts?

A: SDA04H0SK is supplied in standard packaging (not specified). SDA04H0SB and 1-1825059-7 are supplied in tube packaging. Tube packaging is standard for surface mount DIP switches and does not affect component functionality or PCB assembly compatibility.

Q: Which substitute part should be selected for RoHS-compliant applications?

A: Both SDA04H0SB and 1-1825059-7 are ROHS3 compliant. SDA04H0SK is RoHS non-compliant and should not be used in applications requiring RoHS certification.