Grayhill Inc. 90MB05S DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The Grayhill Inc. 90MB05S is a slide-actuated DIP switch featuring single-pole single-throw (SPST) configuration with 5 positions, rated for 25mA at 24VDC. This component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts is essential for design continuity, production support, and long-term component availability in applications requiring SPST DIP switch functionality with identical electrical and mechanical specifications.

Substiute Parts

90MB05S

Grayhill Inc.In Stock: 93290MB05S Datasheet

Current PartRFQ

90B05ST

Grayhill Inc.In Stock: 162290B05ST Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 90MB05S is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Circuit configuration (SPST), number of positions (5), current rating (25mA), and voltage rating (24VDC) must be identical.

Mechanical Parameters: Actuator type (Slide Standard), mounting method (Through Hole), pitch spacing (0.100" / 2.54mm), and height above board (0.195" / 4.95mm) must match exactly.

Material & Contact Specifications: Contact material (Copper Alloy), contact finish (Gold), and body material (Thermoplastic) must be consistent.

Environmental Ratings: Operating temperature range (-40°C to 85°C) and washable capability must be maintained.

The substitute part 90B05ST meets all these criteria and belongs to the same 90B series, providing direct functional and physical compatibility with the 90MB05S.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Grayhill Inc. 90B05ST

The 90B05ST is the direct functional equivalent of the 90MB05S. All electrical, mechanical, and dimensional specifications are identical. The 90B05ST offers significant advantages for new designs and production continuity:

Product Status: The 90B05ST maintains active product status, ensuring ongoing manufacturer support, availability, and supply chain reliability. The 90MB05S is classified as obsolete, creating long-term sourcing risk.

Regulatory Compliance: The 90B05ST achieves RoHS3 compliance, whereas the 90MB05S is RoHS non-compliant. For applications subject to RoHS directives or customer requirements, the 90B05ST satisfies current regulatory standards.

Moisture Sensitivity: The 90B05ST carries MSL 1 (Unlimited) rating compared to the 90MB05S MSL 3 (168 Hours). This provides superior handling flexibility during storage, transportation, and assembly processes without moisture bake-out requirements.

REACH Compliance: Both parts maintain REACH Unaffected status, indicating no regulatory restriction on use.

Export Classification: Both parts carry identical ECCN EAR99 and HTSUS 8536.50.9065 classifications.

For applications currently using the 90MB05S, direct substitution with the 90B05ST is supported without circuit redesign or PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can the 90B05ST replace the 90MB05S in existing designs without PCB modification?

A: Yes. The 90B05ST is physically and electrically identical to the 90MB05S. Pitch spacing (0.100" / 2.54mm), height above board (0.195" / 4.95mm), mounting type (Through Hole), and termination style (PC Pin) are identical. Direct substitution on existing PCBs is supported.

Q: What is the difference between the 90MB05S and 90B05ST?

A: The primary differences are product status, regulatory compliance, and handling requirements. The 90MB05S is obsolete and RoHS non-compliant with MSL 3 moisture sensitivity. The 90B05ST is active product, RoHS3 compliant, and carries MSL 1 moisture sensitivity. All electrical and mechanical parameters are identical.

Q: Why is the 90MB05S classified as obsolete?

A: Manufacturer product status classifications reflect production and support decisions. The 90MB05S has been superseded by the 90B05ST, which offers improved regulatory compliance and handling characteristics while maintaining identical functionality.

Q: Does the 90B05ST require different packaging or handling procedures?

A: The 90B05ST is supplied in Tube packaging. The improved MSL 1 rating eliminates the 168-hour moisture bake-out requirement associated with MSL 3 components, simplifying handling and storage procedures.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts are rated for 25mA at 24VDC, feature SPST configuration with 5 positions, and support 2,000 mechanical and electrical cycles. Operating temperature range (-40°C to 85°C), contact material (Copper Alloy with Gold finish), and all other electrical specifications are identical.

Q: What is the base product number for the 90B05ST?

A: The base product number is 90B05. The 90B05ST designation includes the packaging and configuration suffix.

Q: Are both parts suitable for washable applications?

A: Yes. Both the 90MB05S and 90B05ST support washable applications, enabling use in environments requiring post-assembly cleaning processes.