SDA09H0K DIP Switch SPST 9 Position Equivalent & Substitute Parts

Part Overview

The SDA09H0K is a slide-actuated DIP switch manufactured by C&K, configured as a single-pole single-throw (SPST) switch with 9 positions. This component is rated for 25mA at 24VDC and features through-hole mounting with PC pin termination. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

SDA09H0K

C&KIn Stock: 1108SDA09H0K Datasheet

Current PartRFQ

SDA09H0B

C&KIn Stock: 691SDA09H0B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SDA09H0B qualifies as a direct substitute for the SDA09H0K based on the following critical parameters:

• Circuit configuration: Both are SPST
• Number of positions: Both feature 9 positions
• Current and voltage ratings: Both rated 25mA at 24VDC
• Actuator type: Both use slide (standard) actuators
• Mounting and termination: Both are through-hole with PC pin termination
• Pitch: Both maintain 0.100" (2.54mm) pitch
• Mechanical and electrical life: Both rated for 1,000 cycles
• Contact material and finish: Both use beryllium copper with gold finish
• Washable design: Both feature tape seal and washable construction

Substitution is valid where the minor dimensional and material differences do not impact circuit performance or board layout.

Parameter Comparison

Engineering Selection Recommendations

The SDA09H0B is the recommended substitute for the obsolete SDA09H0K. Both parts maintain identical electrical specifications, circuit configuration, and mechanical interface parameters. The SDA09H0B offers the additional advantage of active product status, ensuring continued availability and supply chain reliability.

The SDA09H0B achieves ROHS3 compliance, whereas the SDA09H0K is non-compliant. For applications subject to RoHS regulations, the SDA09H0B is the required selection. The body material differs (PPS versus PPA), and the operating temperature range is extended on the SDA09H0B (-40°C to 85°C versus -20°C to 85°C). The height above board differs by 0.006" (0.15mm), which is negligible for standard PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the SDA09H0B directly replace the SDA09H0K on existing PCBs?

A: Yes. Both parts share identical pitch (0.100"), termination style (PC pin), and mounting type (through hole). The 0.006" height difference is within standard PCB tolerance and does not affect board-level compatibility.

Q: What is the primary reason to substitute the SDA09H0K?

A: The SDA09H0K is obsolete. The SDA09H0B is an active product from the same manufacturer and series, providing equivalent electrical and mechanical performance with assured supply availability.

Q: Are there compliance differences between these parts?

A: Yes. The SDA09H0B is ROHS3 compliant, while the SDA09H0K is non-compliant. For applications requiring RoHS certification, the SDA09H0B is mandatory.

Q: Do the different body materials (PPA versus PPS) affect electrical performance?

A: No. Both materials are suitable for the specified electrical ratings and operating conditions. The material difference does not impact circuit function or electrical characteristics.

Q: What is the temperature operating range difference?

A: The SDA09H0B extends the lower operating limit to -40°C, compared to -20°C for the SDA09H0K. Both maintain the same upper limit of 85°C. This provides broader environmental compatibility for the substitute part.

Q: Are packaging differences significant?

A: The SDA09H0K packaging is listed as "-" (unspecified), while the SDA09H0B is supplied in tube packaging. This does not affect component function or PCB integration.