Grayhill 90B02ST DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The Grayhill 90B02ST is an active-status DIP switch featuring single-pole single-throw (SPST) circuit configuration with 2-position slide actuator design. This through-hole mounted component operates at 24VDC with 25mA current rating and is designed for applications requiring reliable switching in compact form factors. The part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1) rating, making it suitable for standard industrial and commercial environments. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence within the DIP switch category.

Substiute Parts

90B02ST

Grayhill Inc.In Stock: 72190B02ST Datasheet

Current PartRFQ

SDA02H0B

C&KIn Stock: 15236SDA02H0B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Grayhill 90B02ST is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Circuit configuration: SPST
• Number of positions: 2
• Current rating: 25mA
• Voltage rating: 24VDC

Mechanical Compatibility Requirements:

• Actuator type: Slide (Standard)
• Mounting type: Through Hole
• Termination style: PC Pin
• Pitch: 0.100" (2.54mm)

Environmental & Compliance Requirements:

• Operating temperature range: -40°C to 85°C minimum
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

The C&K SDA02H0B meets all electrical and mechanical compatibility criteria. Variations in contact material (Copper Alloy versus Beryllium Copper), body material (Thermoplastic versus Polyphenylene Sulfide), and mechanical/electrical life cycles do not preclude substitution when the primary functional parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: Grayhill 90B02ST

The Grayhill 90B02ST maintains active product status with 709 units in current inventory. This part is ROHS3 compliant and carries REACH Unaffected designation, meeting regulatory requirements for industrial applications. The component is classified under ECCN EAR99, indicating standard commercial export classification.

Substitute Selection: C&K SDA02H0B

The C&K SDA02H0B is functionally equivalent across all critical electrical and mechanical parameters. This part is also active-status with significantly higher inventory availability (15,153 units). The SDA02H0B maintains identical ROHS3 compliance, REACH Unaffected status, and EAR99 export classification. Both parts satisfy the same regulatory and compliance framework.

Selection Basis:

Component selection should be determined by:

• Inventory availability and lead time requirements
• Procurement cost and supply chain considerations
• PCB layout constraints related to height above board (Grayhill: 0.195", C&K: 0.183") and overall length (Grayhill: 0.270", C&K: 0.278")
• Established supplier relationships and qualification status

Both parts are suitable for direct substitution in applications requiring SPST 2-position DIP switches rated for 25mA at 24VDC operation.

Frequently Asked Questions (FAQ)

Q: What defines substitution compatibility for the Grayhill 90B02ST?

A: Substitution compatibility is determined by matching circuit type (SPST), position count (2), current rating (25mA), voltage rating (24VDC), actuator type (Slide Standard), mounting method (Through Hole), termination style (PC Pin), and pitch (0.100"). All substitute parts must maintain the same operating temperature range (-40°C to 85°C) and compliance certifications (ROHS3, REACH Unaffected, EAR99).

Q: Are there physical differences between the Grayhill 90B02ST and C&K SDA02H0B?

A: Yes. The Grayhill 90B02ST has a height above board of 0.195" (4.95mm) and length of 0.270" (6.86mm). The C&K SDA02H0B has a height above board of 0.183" (4.65mm) and length of 0.278" (7.06mm). These dimensional variations must be evaluated against PCB layout constraints and available mounting space. Contact material also differs: Grayhill uses Copper Alloy while C&K uses Beryllium Copper.

Q: Do the mechanical and electrical life cycle differences affect substitution?

A: The Grayhill 90B02ST specifies 2,000 mechanical and electrical cycles, while the C&K SDA02H0B specifies 1,000 cycles. Application requirements for cycle life must be evaluated independently. If the application requires 2,000+ cycles, the Grayhill part is the specified choice. For applications requiring fewer cycles, both parts are functionally equivalent.

Q: What is the packaging format for both parts?

A: Both the Grayhill 90B02ST and C&K SDA02H0B are supplied in Tube packaging with Tape Seal features, enabling automated assembly processes and standard handling procedures.

Q: Are both parts suitable for washable applications?

A: Yes. Both the Grayhill 90B02ST and C&K SDA02H0B are rated as washable components, supporting post-assembly cleaning processes in manufacturing environments.