SDA03H0KD DIP Switch Equivalent & Substitute Parts

Part Overview

The SDA03H0KD is a slide-actuated DIP switch manufactured by C&K, configured as a single-pole single-throw (SPST) switch with 3 positions. It is rated for 25mA at 24VDC and designed for through-hole mounting on printed circuit boards. The SDA03H0KD is classified as obsolete, making identification of compatible substitute parts essential for ongoing production support and design updates. Equivalent parts must maintain identical electrical ratings and mechanical compatibility while meeting current manufacturing and compliance standards.

Substiute Parts

SDA03H0KD

C&KIn Stock: 1216SDA03H0KD Datasheet

Current PartRFQ

SDA03H0BD

C&KIn Stock: 3662SDA03H0BD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SDA03H0BD qualifies as a direct substitute for the SDA03H0KD based on the following critical parameters:

Electrical Compatibility: Both parts maintain identical circuit configuration (SPST), position count (3), current rating (25mA), and voltage rating (24VDC). These parameters define the functional electrical performance and ensure seamless operation in existing circuit designs.

Mechanical Compatibility: Both parts share identical actuator type (slide standard), mounting method (through hole), pitch spacing (0.100" / 2.54mm), and termination style (PC pin). These parameters ensure physical interchangeability on printed circuit boards without requiring layout modifications.

Contact System: Both parts use beryllium copper contacts with gold finish, ensuring equivalent electrical performance and reliability characteristics.

Operational Life: Both parts are rated for 1,000 mechanical and electrical cycles, maintaining equivalent durability specifications.

Differences: The SDA03H0BD features a lower height above board (0.183" vs. 0.189"), different body material (PPS vs. PPA), and an extended operating temperature range (-40°C to 85°C vs. -20°C to 85°C). The SDA03H0BD is active product status with RoHS3 compliance, whereas the SDA03H0KD is obsolete and RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

The SDA03H0BD is the appropriate substitute for the SDA03H0KD in new designs and production transitions. The SDA03H0KD is classified as obsolete, creating supply chain risk and limiting long-term availability. The SDA03H0BD maintains full electrical and mechanical compatibility while offering the following advantages:

Product Status: The SDA03H0BD is active product status, ensuring continued manufacturing support and availability from C&K.

Regulatory Compliance: The SDA03H0BD is RoHS3 compliant, meeting current environmental and regulatory requirements for electronic components in most markets. The SDA03H0KD is RoHS non-compliant and may not meet procurement specifications for new applications.

Operating Temperature Range: The SDA03H0BD extends the lower operating temperature limit to -40°C, providing enhanced performance in cold environment applications compared to the SDA03H0KD minimum of -20°C.

Body Material: The SDA03H0BD uses polyphenylene sulfide (PPS), which offers improved thermal and chemical resistance compared to the polyphthalamide (PPA) body material of the SDA03H0KD.

Physical Dimensions: The SDA03H0BD has a slightly reduced height above board (0.183" vs. 0.189"), which may provide marginal benefits in space-constrained layouts.

Frequently Asked Questions (FAQ)

Q: Can the SDA03H0BD directly replace the SDA03H0KD without circuit board modifications?

A: Yes. Both parts share identical electrical ratings (25mA, 24VDC, SPST), mechanical configuration (3-position slide actuator, through-hole mounting, 0.100" pitch), and contact system (beryllium copper with gold finish). No circuit board layout changes are required.

Q: What is the significance of the product status difference between obsolete and active?

A: Obsolete products like the SDA03H0KD have ended manufacturing and are no longer supported by the manufacturer. Active products like the SDA03H0BD continue in production with ongoing supply availability and technical support. For new designs and production continuity, active products are strongly preferred.

Q: Does the RoHS3 compliance of the SDA03H0BD affect compatibility with existing designs?

A: RoHS3 compliance indicates the SDA03H0BD meets current environmental regulations and is suitable for markets requiring RoHS certification. The SDA03H0KD is RoHS non-compliant and may not meet procurement requirements for new applications or certain geographic markets. Functionally, both parts operate identically in circuits.

Q: Are there any height or clearance considerations when substituting the SDA03H0BD for the SDA03H0KD?

A: The SDA03H0BD is 0.006" (0.15mm) lower than the SDA03H0KD. This minor difference is unlikely to affect most applications. Verify clearance in space-constrained designs, particularly where the switch height is critical to enclosure fit or component stacking.

Q: What packaging options are available for the SDA03H0BD?

A: The SDA03H0BD is supplied in tube packaging. The SDA03H0KD packaging specification was not provided in the available data. Confirm packaging requirements for your procurement process.

Q: Are the operating temperature ranges compatible for all applications?

A: The SDA03H0BD operates from -40°C to 85°C, while the SDA03H0KD operates from -20°C to 85°C. The SDA03H0BD provides extended low-temperature performance. If your application requires operation below -20°C, the SDA03H0BD is required. For applications within -20°C to 85°C, both parts are functionally equivalent.