BDB04 Equivalent & Substitute Parts

Part Overview

The BDB04 is a DIP switch manufactured by C&K, featuring SPST (Single Pole Single Throw) configuration with 4 positions, designed for through-hole mounting with a slide actuator. The component is rated for 25mA at 25VDC and operates across a temperature range of -40°C to 85°C. The BDB04 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

BDB04

C&KIn Stock: 1206BDB04 Datasheet

Current PartRFQ

BD04

C&KIn Stock: 6001BD04 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BDB04 is determined by the following critical parameters:

• Circuit Configuration: Both parts must maintain SPST topology with 4 positions
• Mounting Interface: Through-hole mounting with PC pin termination and 0.100" (2.54mm) pitch ensures mechanical compatibility
• Actuator Mechanism: Slide actuator type with raised actuator level maintains functional equivalence
• Electrical Ratings: The substitute must support the operational voltage and current requirements of the application
• Environmental Compliance: RoHS3 compliance and MSL rating ensure regulatory and reliability alignment

The BD04 meets these substitution criteria as an active-status alternative within the C&K product family.

Parameter Comparison

Engineering Selection Recommendations

The BD04 is the primary substitute for the obsolete BDB04. Both components share identical mechanical interfaces, circuit topology, and environmental operating specifications. The BD04 maintains active product status with C&K, ensuring ongoing availability and supply chain continuity.

The BD04 exhibits higher current capacity (100mA versus 25mA) and operates at a lower voltage rating (5VDC versus 25VDC). These electrical differences position the BD04 as suitable for applications operating within 5VDC systems with current requirements up to 100mA. Applications requiring the original 25VDC rating or operating at exactly 25mA must evaluate whether the BD04's electrical characteristics align with circuit design parameters.

Both parts maintain RoHS3 compliance and MSL Level 1 rating, supporting equivalent regulatory and reliability requirements.

Frequently Asked Questions (FAQ)

Q: Can the BD04 directly replace the BDB04 in existing designs?

A: Mechanical and functional compatibility is confirmed through matching circuit topology (SPST, 4 positions), identical mounting interface (through-hole, 0.100" pitch), and equivalent actuator design. Electrical compatibility depends on application voltage and current requirements. The BD04 operates at 5VDC with 100mA capacity, while the BDB04 is rated for 25VDC at 25mA. Verify that your circuit operates within the BD04's electrical specifications.

Q: What are the key differences between BDB04 and BD04?

A: The primary differences are voltage rating (25VDC versus 5VDC), current capacity (25mA versus 100mA), body material (Polyamide PA46 versus Polybutylene Terephthalate PBT glass-filled), and product status (obsolete versus active). Mechanical dimensions, pitch, actuator type, and environmental ratings remain equivalent.

Q: Are there packaging considerations when substituting these parts?

A: The BDB04 is specified with standard packaging, while the BD04 is supplied in tube packaging. Both maintain identical component dimensions and through-hole footprint compatibility. Packaging format does not affect PCB assembly or functional performance.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the BDB04 and BD04 are RoHS3 compliant and carry MSL Level 1 (unlimited moisture sensitivity) rating. ECCN and HTSUS classifications are identical, supporting equivalent regulatory and export compliance requirements.

Q: What should be verified before implementing the BD04 as a substitute?

A: Confirm that your application circuit operates at 5VDC or lower and requires current capacity not exceeding 100mA. Verify PCB layout accommodates the BD04's height above board (0.297" versus 0.274"), though the 0.023" difference is typically within standard PCB clearance tolerances. Validate that the BD04's active product status and tube packaging align with procurement and assembly workflows.