BDB08 DIP Switch - Equivalent & Substitute Parts

Part Overview

The BDB08 is an 8-position DIP switch manufactured by C&K, designed for through-hole mounting applications requiring SPST (Single Pole Single Throw) switching functionality. This component features a slide actuator with a standard vertical profile and is rated for 25mA at 25VDC operation across a temperature range of -40°C to 85°C.

The BDB08 is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

BDB08

C&KIn Stock: 1768BDB08 Datasheet

Current PartRFQ

BD08

C&KIn Stock: 21648BD08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BDB08 is determined by the following critical parameters:

• Circuit Configuration: SPST topology must be maintained
• Position Count: 8-position requirement
• Mounting Method: Through-hole with PC pin termination
• Pitch Specification: 0.100" (2.54mm) full pitch
• Actuator Style: Slide actuator with raised level
• Contact Material & Finish: Phosphor bronze with gold finish
• Mechanical & Electrical Life: 10,000 cycles minimum
• Environmental Compliance: ROHS3 compliance required

The BD08 meets all substitution criteria. While it operates at different electrical ratings (100mA at 5VDC versus 25mA at 25VDC), both components share identical mechanical architecture, footprint, and switching topology, making them mechanically and functionally interchangeable at the board level. The BD08 is currently in active production status, ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The BD08 is the qualified substitute for the obsolete BDB08. Selection is based on the following engineering criteria:

Mechanical Compatibility: Both components share identical footprint geometry, pitch spacing (0.100"), and through-hole PC pin termination. Board-level integration requires no layout modifications.

Functional Equivalence: Both components provide 8-position SPST switching with identical actuator mechanics, contact materials, and switching life ratings (10,000 cycles).

Compliance Status: The BD08 maintains ROHS3 compliance and MSL Level 1 rating, meeting the same environmental and regulatory requirements as the original BDB08.

Production Availability: The BD08 is in active production status with substantial inventory availability, ensuring reliable long-term supply for production and field service applications.

Electrical Rating Consideration: The BD08 operates at 100mA/5VDC compared to the BDB08's 25mA/25VDC rating. Circuit-level validation is required to confirm that the substitute component's electrical characteristics are compatible with the application's actual operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the BD08 be used as a direct replacement for the BDB08 without PCB modifications?

A: Yes. Both components share identical mechanical specifications, footprint, pitch, and through-hole termination. No PCB layout changes are required for physical installation.

Q: What are the key differences between the BDB08 and BD08?

A: The primary differences are electrical ratings (25mA/25VDC versus 100mA/5VDC), body material composition (Polyamide PA46 versus PBT Glass Filled), and height above board (0.274" versus 0.297"). Mechanical architecture and switching topology are identical.

Q: Is the BD08 suitable for all BDB08 applications?

A: Mechanical and functional compatibility is confirmed. However, the application's actual operating voltage and current requirements must be evaluated against the BD08's 100mA/5VDC rating to ensure electrical compatibility.

Q: Are both components RoHS compliant?

A: Yes. Both the BDB08 and BD08 are ROHS3 compliant with MSL Level 1 moisture sensitivity rating.

Q: Why is the BDB08 listed as obsolete?

A: The BDB08 has been discontinued by the manufacturer. The BD08 represents the active production equivalent within the C&K DIP switch product line.

Q: What is the pitch specification, and why does it matter?

A: Both components feature 0.100" (2.54mm) full pitch spacing. This standard pitch ensures compatibility with conventional DIP switch footprints and breadboard layouts.