SDB08H0B DIP Switch SPST 8 Position Equivalent & Substitute Parts

Part Overview

The SDB08H0B is a DIP switch featuring SPST (Single Pole Single Throw) configuration with 8 positions, designed for through-hole mounting applications requiring 25mA at 24VDC switching capability. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SDB08H0B

C&KIn Stock: 861SDB08H0B Datasheet

Current PartRFQ

SDA08H0B

C&KIn Stock: 1636SDA08H0B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SDB08H0B is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPST topology
• Position count: 8 positions
• Electrical ratings: 25mA current, 24VDC voltage
• Actuator mechanism: Slide (Standard) with flush/recessed actuation
• Mounting interface: Through-hole with 0.100" (2.54mm) pitch
• Environmental compliance: ROHS3 compliance and MSL 1 rating
• Operating temperature envelope: -40°C to 85°C

The SDA08H0B meets all substitution criteria. While secondary parameters such as contact material, body material, and physical dimensions vary within acceptable tolerances, the functional electrical and mechanical interfaces remain compatible with applications designed for the SDB08H0B.

Parameter Comparison

Engineering Selection Recommendations

The SDA08H0B is the direct functional equivalent for SDB08H0B applications. Both components maintain identical electrical specifications (25mA, 24VDC), mechanical interface parameters (8-position SPST, 0.100" pitch through-hole mounting), and environmental compliance ratings (ROHS3, MSL 1).

The SDA08H0B carries active product status with current manufacturing availability, whereas the SDB08H0B is obsolete. For new designs or system refreshes, the SDA08H0B is the appropriate selection. Both components satisfy identical regulatory and compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDA08H0B directly replace the SDB08H0B in existing PCB designs?

A: Yes. Both components share identical pitch (0.100"), mounting type (through-hole), and electrical ratings (25mA, 24VDC, SPST 8-position). PCB footprints designed for the SDB08H0B accommodate the SDA08H0B without modification.

Q: What are the physical dimension differences between these parts?

A: Height above board differs: SDB08H0B is 0.148" (3.75mm), while SDA08H0B is 0.183" (4.65mm). Length varies: SDB08H0B is 0.843" (21.41mm) versus SDA08H0B at 0.876" (22.26mm). These variations remain within standard component tolerance ranges for DIP switch applications.

Q: Are there material differences that affect performance?

A: Contact material differs (Phosphor Bronze versus Beryllium Copper) and body material differs (Polyamide PA46 versus Polyphenylene Sulfide). Both configurations maintain identical electrical performance within the specified 25mA, 24VDC operating envelope and 1,000-cycle mechanical/electrical life ratings.

Q: What is the packaging difference?

A: SDB08H0B uses standard packaging, while SDA08H0B is supplied in tube packaging with tape seal. This affects handling and storage but does not impact functional compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both SDB08H0B and SDA08H0B are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) rating.