Grayhill Inc. 90MB10S DIP Switch Equivalent & Substitute Parts

Part Overview

The Grayhill Inc. 90MB10S is a 10-position DIP switch with SPST (Single Pole Single Throw) circuit configuration, rated for 25mA at 24VDC. This component features a slide actuator with standard (flush, recessed) positioning and is designed for through-hole mounting on printed circuit boards.

The 90MB10S carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance and repairs.

Substiute Parts

90MB10S

Grayhill Inc.In Stock: 80490MB10S Datasheet

Current PartRFQ

90B10ST

Grayhill Inc.In Stock: 189390B10ST Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 90MB10S is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Circuit type (SPST), number of positions (10), current rating (25mA), and voltage rating (24VDC) must remain identical.

Mechanical Parameters: Actuator type (slide, standard), actuator level (flush, recessed), mounting method (through hole), pitch spacing (0.100"), and height above board (0.195") must match exactly.

Material Specifications: Contact material (copper alloy) and contact finish (gold) ensure consistent electrical performance and reliability.

Environmental Specifications: Operating temperature range (-40°C to 85°C), mechanical life (2,000 cycles), and electrical life (2,000 cycles) define the functional envelope.

The substitute part 90B10ST meets all these criteria and is therefore a direct functional equivalent to the 90MB10S.

Parameter Comparison

Engineering Selection Recommendations

The 90B10ST is a direct functional substitute for the 90MB10S across all electrical, mechanical, and environmental parameters. Both components are manufactured by Grayhill Inc. within the same 90B series and share identical specifications for circuit configuration, current and voltage ratings, actuator characteristics, and physical dimensions.

The primary distinction between these parts is product status and regulatory compliance. The 90MB10S is obsolete, whereas the 90B10ST maintains active product status with current manufacturing support. The 90B10ST additionally provides ROHS3 compliance compared to the non-compliant status of the 90MB10S, and features improved moisture sensitivity level (MSL 1 versus MSL 3), reducing handling and storage constraints.

For new designs and ongoing production requirements, the 90B10ST is the appropriate selection. For legacy system repairs and maintenance where the 90MB10S is specified, the 90B10ST provides full functional equivalence with enhanced regulatory compliance and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the 90B10ST be used as a direct replacement for the 90MB10S in existing circuit designs?

A: Yes. The 90B10ST is electrically and mechanically identical to the 90MB10S. All electrical parameters (25mA, 24VDC, SPST), mechanical dimensions (0.195" height, 0.100" pitch, through-hole mounting), and environmental specifications (-40°C to 85°C operating range) are equivalent. No circuit modifications are required.

Q: What is the difference in packaging between these two parts?

A: The 90MB10S is supplied with tape seal packaging. The 90B10ST is supplied in tube packaging. Both packaging formats are suitable for through-hole component handling and assembly processes.

Q: Why does the 90B10ST have a lower Moisture Sensitivity Level (MSL 1) compared to the 90MB10S (MSL 3)?

A: MSL rating reflects moisture absorption characteristics during storage and handling. MSL 1 (unlimited shelf life) indicates superior moisture resistance compared to MSL 3 (168-hour limit). The 90B10ST requires less stringent humidity control during storage and handling, reducing logistics complexity.

Q: Is the 90B10ST RoHS compliant?

A: Yes. The 90B10ST is ROHS3 compliant. The 90MB10S is RoHS non-compliant. For applications subject to RoHS regulations, the 90B10ST is the required selection.

Q: Are there any differences in mechanical life or electrical life between these parts?

A: No. Both the 90MB10S and 90B10ST are rated for 2,000 mechanical cycles and 2,000 electrical cycles, providing identical operational durability.

Q: What is the base product number for the 90B10ST?

A: The base product number is 90B10. The 90B10ST is a variant within this product family.