SDA10H1KD Equivalent & Substitute Parts

Part Overview

The SDA10H1KD is a DIP slide switch manufactured by C&K, featuring a 10-position SPST configuration rated for 25mA at 24VDC. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The switch employs a through-hole mounting architecture with PC pin termination and operates across a temperature range of -20°C to 85°C.

Substiute Parts

SDA10H1KD

C&KIn Stock: 1038SDA10H1KD Datasheet

Current PartRFQ

SDA10H1BD

C&KIn Stock: 1300SDA10H1BD Datasheet

DirectRFQ

1825057-9

TE Connectivity ALCOSWITCH SwitchesIn Stock: 98621825057-9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SDA10H1KD is determined by strict alignment with the following critical parameters:

• Circuit configuration must remain SPST
• Position count must equal 10
• Voltage rating must support 24VDC operation
• Current rating must meet or exceed 25mA
• Mounting type must be through-hole with PC pin termination
• Pitch spacing must be 0.100" (2.54mm)
• Height above board must be 0.228" (5.80mm)
• Actuator type must be slide (standard) with raised level

Two substitute parts satisfy these criteria: SDA10H1BD (direct C&K equivalent with improved compliance status) and 1825057-9 (TE Connectivity ALCOSWITCH alternative with enhanced current capacity).

Parameter Comparison

Engineering Selection Recommendations

SDA10H1BD is the primary substitute for the obsolete SDA10H1KD. Both components are manufactured by C&K within the same SDA series and maintain identical electrical and mechanical specifications. The SDA10H1BD offers improved product status (active), ROHS3 compliance, and an extended operating temperature range (-40°C to 85°C versus -20°C to 85°C). The body material differs (PPS versus PPA), providing enhanced thermal and chemical resistance. This part is recommended for direct replacement in new designs and legacy system updates.

1825057-9 (TE Connectivity ALCOSWITCH) serves as an alternative substitute when higher current capacity is required. This part supports 100mA operation compared to the 25mA rating of the main part, providing design margin for applications with increased current demands. The 1825057-9 features ROHS3 compliance, washable construction, and an operating temperature range of -30°C to 85°C. The contact material is copper alloy rather than beryllium copper, and the length is marginally longer (1.078" versus 1.076"). Selection of this part should be based on current requirement verification and mechanical space availability.

Frequently Asked Questions (FAQ)

Q: Can SDA10H1BD be used as a direct replacement for SDA10H1KD?

A: Yes. Both parts maintain identical circuit configuration (SPST), position count (10), voltage rating (24VDC), current rating (25mA), actuator type (slide standard), mounting type (through-hole), pitch (0.100"), and height above board (0.228"). The SDA10H1BD is the active equivalent with improved compliance status.

Q: What is the primary difference between SDA10H1BD and 1825057-9?

A: The primary difference is current rating. SDA10H1BD maintains the original 25mA specification, while 1825057-9 supports 100mA. Additionally, 1825057-9 features washable construction and is manufactured by TE Connectivity rather than C&K. Both meet the core mechanical and electrical interface requirements.

Q: Are there packaging differences between these substitutes?

A: SDA10H1KD was supplied in standard packaging (not specified). SDA10H1BD and 1825057-9 are both supplied in tube packaging, which is standard for DIP switch distribution.

Q: Does the body material change affect compatibility?

A: The SDA10H1KD uses polyphthalamide (PPA), while both substitutes use polyphenylene sulfide (PPS). PPS provides superior thermal and chemical resistance. This change does not affect electrical or mechanical compatibility; it represents a material improvement.

Q: What is the temperature operating range difference?

A: SDA10H1KD operates from -20°C to 85°C. SDA10H1BD extends this to -40°C to 85°C, and 1825057-9 operates from -30°C to 85°C. Both substitutes support the original temperature range and provide additional low-temperature capability.

Q: Is RoHS compliance a factor in selecting a substitute?

A: The SDA10H1KD is RoHS non-compliant. Both SDA10H1BD and 1825057-9 are ROHS3 compliant. For applications subject to RoHS requirements, either substitute is appropriate. For legacy systems without RoHS mandates, compliance status does not affect functional compatibility.

Q: Can 1825057-9 be used in applications designed for 25mA operation?

A: Yes. The 1825057-9 is rated for 100mA, which exceeds the 25mA requirement. The part will operate correctly in circuits designed for 25mA operation. Current rating represents maximum capacity; actual current draw is determined by circuit design.