Grayhill 76MSB03S DIP Switch Rocker SPST Equivalent & Substitute Parts

Part Overview

The Grayhill 76MSB03S is a 3-position DIP switch with rocker actuator, rated for 150mA at 30VDC, designed for through-hole mounting in electronic assemblies. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production support, design updates, and component procurement.

The 76MSB03S maintains full functional compatibility with active alternatives within the Grayhill 76 series, provided that electrical ratings, mechanical dimensions, and termination specifications remain unchanged. Substitution is necessary to ensure supply chain continuity and access to components with active product status and current manufacturing support.

Substiute Parts

76MSB03S

Grayhill Inc.In Stock: 119176MSB03S Datasheet

Current PartRFQ

76SB03ST

Grayhill Inc.In Stock: 551976SB03ST Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Grayhill 76MSB03S is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must remain identical for a part to qualify as a direct substitute:

Critical Parameters (Must Match Exactly):

• Circuit configuration: SPST (Single Pole Single Throw)
• Number of positions: 3
• Current rating: 150mA
• Voltage rating: 30VDC
• Actuator type: Rocker
• Mounting type: Through Hole
• Pitch: 0.100 inches (2.54mm)
• Height above board: 0.315 inches (8.00mm)
• Termination style: PC Pin

Important Parameters (Must Match):

• Contact material: Copper Alloy
• Contact finish: Gold
• Operating temperature range: -40°C to 85°C
• Mechanical life: 2,000 cycles
• Electrical life: 2,000 cycles
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

The Grayhill 76SB03ST qualifies as a direct substitute because it maintains identical electrical ratings, mechanical dimensions, contact specifications, and environmental compliance across all parameters. The primary distinction is product status (active versus obsolete) and packaging format (tube versus tape seal).

Parameter Comparison

Engineering Selection Recommendations

The Grayhill 76SB03ST is a direct functional and electrical equivalent to the 76MSB03S. Selection between these parts should be based on the following engineering criteria:

Product Status Consideration: The 76MSB03S is classified as obsolete, indicating discontinued manufacturing and limited long-term availability. The 76SB03ST maintains active product status with current manufacturing support from Grayhill Inc., ensuring supply chain reliability and access to technical documentation.

Compliance and Certification: Both parts maintain identical compliance certifications:

• ROHS3 Compliant
• REACH Unaffected
• ECCN: EAR99
• HTSUS: 8536.50.9065

These certifications confirm suitability for regulated markets and applications requiring environmental compliance documentation.

Packaging Consideration: The primary operational difference is packaging format. The 76MSB03S is supplied in tape seal packaging, while the 76SB03ST is supplied in tube packaging. This distinction affects handling, storage, and automated assembly processes but does not alter electrical or mechanical performance.

Electrical and Mechanical Equivalence: All critical parameters remain identical, including current rating (150mA), voltage rating (30VDC), actuator type (rocker), mounting configuration (through-hole), and dimensional specifications (0.315" height, 0.100" pitch). Direct substitution in existing PCB designs requires no layout modifications or design changes.

Frequently Asked Questions (FAQ)

Q: Can the 76SB03ST be used as a direct replacement for the 76MSB03S in existing designs?

A: Yes. The 76SB03ST is electrically and mechanically equivalent to the 76MSB03S. All critical parameters including current rating, voltage rating, actuator type, mounting configuration, and dimensional specifications are identical. No PCB layout modifications or design changes are required.

Q: What is the difference between the 76MSB03S and 76SB03ST?

A: The primary differences are product status and packaging format. The 76MSB03S is obsolete with tape seal packaging; the 76SB03ST is active with tube packaging. Electrical performance, mechanical dimensions, and compliance certifications are identical.

Q: Why is the 76MSB03S classified as obsolete?

A: Obsolete status indicates that Grayhill Inc. has discontinued manufacturing of this part number. The 76SB03ST represents the active equivalent within the Grayhill 76 series, ensuring continued availability and manufacturing support.

Q: Does packaging format affect component performance?

A: No. Packaging format (tape seal versus tube) affects handling, storage, and automated assembly processes but does not alter electrical performance, mechanical characteristics, or functional behavior. Component selection should be based on assembly process requirements.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain identical compliance certifications: ROHS3 Compliant, REACH Unaffected, ECCN EAR99, and HTSUS 8536.50.9065. Both are suitable for regulated markets and applications requiring environmental compliance documentation.

Q: What parameters must remain identical for substitution to be valid?

A: Critical parameters that must match exactly are: circuit configuration (SPST), number of positions (3), current rating (150mA), voltage rating (30VDC), actuator type (rocker), mounting type (through-hole), pitch (0.100"), height above board (0.315"), and termination style (PC pin). Contact material, contact finish, operating temperature range, mechanical life, electrical life, and compliance status must also remain identical.

Q: Can the 76SB03ST be used in high-reliability or mission-critical applications?

A: Component selection for high-reliability applications must be based on application-specific requirements, environmental conditions, and reliability standards. Both parts maintain identical electrical ratings, mechanical life (2,000 cycles), electrical life (2,000 cycles), and operating temperature range (-40°C to 85°C). Application-specific validation is required.

Q: Is the 76SB03ST available in higher quantities than the 76MSB03S?

A: The 76SB03ST maintains active product status with current manufacturing support. Inventory availability should be confirmed with component suppliers. The 76MSB03S, being obsolete, has limited availability and should not be specified for new designs or ongoing production.