SDA09H0KD DIP Switch Equivalent & Substitute Parts

Part Overview

The SDA09H0KD is a 9-position DIP switch manufactured by C&K, designed for through-hole mounting applications requiring SPST (Single Pole Single Throw) switching at 25mA and 24VDC. This component features a slide actuator with gold-plated beryllium copper contacts and is rated for 1,000 mechanical and electrical cycles.

The SDA09H0KD is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

SDA09H0KD

C&KIn Stock: 766SDA09H0KD Datasheet

Current PartRFQ

SDA09H0BD

C&KIn Stock: 1099SDA09H0BD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SDA09H0BD qualifies as a direct substitute for the SDA09H0KD based on the following critical parameters:

• Circuit Configuration: Both parts are SPST
• Number of Positions: Both are 9-position switches
• Current Rating: Both are rated at 25mA
• Voltage Rating: Both are rated at 24VDC
• Actuator Type: Both use slide (standard) actuators
• Mounting Type: Both are through-hole mounted
• Pitch: Both use 0.100" (2.54mm) pitch
• Contact Material: Both use beryllium copper contacts
• Contact Finish: Both use gold plating
• Cycle Life: Both are rated for 1,000 mechanical and electrical cycles

The SDA09H0BD represents an active product with improved compliance status and enhanced operating temperature range, making it suitable for direct replacement in applications currently using the obsolete SDA09H0KD.

Parameter Comparison

Engineering Selection Recommendations

The SDA09H0BD is the recommended substitute for the obsolete SDA09H0KD. Both parts maintain identical electrical and mechanical specifications across all critical switching parameters, ensuring functional compatibility in existing circuit designs.

The SDA09H0BD offers the following advantages:

• Active Product Status: The substitute is currently in active production, ensuring long-term availability and supply chain stability.
• Enhanced Compliance: The SDA09H0BD is ROHS3 compliant, whereas the original part is RoHS non-compliant. This compliance status is significant for applications subject to regulatory requirements.
• Extended Operating Temperature Range: The substitute operates from -40°C to 85°C compared to the original -20°C to 85°C range, providing broader thermal performance capability.
• Improved Body Material: The SDA09H0BD uses Polyphenylene Sulfide (PPS) instead of Polyphthalamide (PPA), offering enhanced material properties.

The minimal height difference (0.183" versus 0.189") is negligible for PCB layout considerations and does not impact functional performance or mechanical fit in standard through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the SDA09H0BD be used as a direct replacement for the SDA09H0KD?

A: Yes. Both parts share identical electrical ratings (25mA at 24VDC), circuit configuration (SPST), position count (9), actuator type (slide standard), and mechanical life specifications (1,000 cycles). The parts are functionally interchangeable in all applications where the SDA09H0KD was originally specified.

Q: What is the significance of the RoHS compliance difference?

A: The SDA09H0KD is RoHS non-compliant, while the SDA09H0BD is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements mandating RoHS compliance, the SDA09H0BD is the appropriate choice. For applications without such requirements, both parts are functionally equivalent.

Q: Does the operating temperature range difference affect substitution?

A: The SDA09H0BD operates from -40°C to 85°C versus the SDA09H0KD's -20°C to 85°C range. If your application operates within the original -20°C to 85°C window, both parts are suitable. If your application requires operation below -20°C, the SDA09H0BD provides extended capability.

Q: Are there packaging differences between these parts?

A: The SDA09H0KD is supplied with standard packaging (dash notation), while the SDA09H0BD is supplied in tube packaging. Both packaging formats are standard for through-hole components and do not affect component performance or PCB assembly compatibility.

Q: What is the height difference between these parts?

A: The SDA09H0BD is 0.183" (4.65mm) above board, compared to the SDA09H0KD at 0.189" (4.80mm). This 0.006" difference is negligible for standard PCB designs and does not require layout modifications.

Q: Are both parts available in the same pitch configuration?

A: Yes. Both the SDA09H0KD and SDA09H0BD use 0.100" (2.54mm) full pitch, ensuring identical PCB footprint compatibility and no design changes required for substitution.