Grayhill 76PSB03S DIP Switch SPST Piano Actuator Equivalent & Substitute Parts

Part Overview

The Grayhill 76PSB03S is a 3-position DIP switch with SPST circuit configuration, piano actuator, and 150mA/30VDC electrical rating. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where original inventory becomes unavailable or where design specifications permit alternative electrical and mechanical parameters.

Substiute Parts

76PSB03S

Grayhill Inc.In Stock: 113476PSB03S Datasheet

Current PartRFQ

76PSB03ST

Grayhill Inc.In Stock: 481076PSB03ST Datasheet

DirectRFQ

194-3MST

CTS ElectrocomponentsIn Stock: 20111194-3MST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 76PSB03S are classified based on strict electrical and mechanical parameter compatibility within the DIP switch product category. Substitution eligibility is determined by the following criteria:

Primary Substitution Criteria (Mandatory Match):

• Circuit configuration: SPST
• Number of positions: 3
• Actuator type: Piano with raised level
• Mounting type: Through hole, right angle
• Pitch: 0.100" (2.54mm)
• Operating temperature range: -40°C to 85°C
• Termination style: PC Pin

Secondary Substitution Criteria (Allowable Variation):

• Current rating: Equal to or greater than 150mA
• Voltage rating: Equal to or greater than 30VDC
• Mechanical and electrical life: Equal to or greater than 2,000 cycles
• RoHS and REACH compliance status

Identified Substitute Parts:

1. 76PSB03ST (Grayhill Inc.) – Direct manufacturer equivalent with identical electrical and mechanical specifications. Primary difference: active product status and RoHS3 compliance. Packaging format differs (tube vs. bulk).

2. 194-3MST (CTS Electrocomponents) – Cross-manufacturer substitute with compatible form factor and mounting. Electrical ratings are reduced (50mA/24VDC vs. 150mA/30VDC). Electrical life rating is higher (7,000 cycles vs. 2,000 cycles). Suitable for applications where lower current and voltage requirements are acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The 76PSB03ST is the recommended substitute for the obsolete 76PSB03S. Both parts are manufactured by Grayhill Inc. and share identical electrical specifications (150mA/30VDC), mechanical configuration, and operating parameters. The 76PSB03ST is active product status with ROHS3 compliance, providing supply chain continuity and regulatory alignment. Packaging differs (tube format vs. bulk), which may require adjustment to assembly and inventory procedures but does not affect functional compatibility.

For Conditional Cross-Manufacturer Substitution:

The 194-3MST (CTS Electrocomponents) is suitable only for applications where the circuit design permits reduced electrical ratings (50mA/24VDC maximum). This part maintains mechanical and form-factor compatibility with identical pitch, mounting type, and actuator configuration. The 194-3MST provides extended electrical life (7,000 cycles), which may benefit applications with high switching frequency requirements. ROHS3 compliance and active product status support long-term availability.

Compliance Considerations:

Both substitute parts achieve ROHS3 compliance and REACH unaffected status, supporting modern regulatory requirements. The original 76PSB03S is RoHS non-compliant; substitution with either alternative part addresses environmental and regulatory compliance gaps in legacy system updates.

Frequently Asked Questions (FAQ)

Q: Can the 76PSB03ST directly replace the 76PSB03S without circuit modification?

A: Yes. The 76PSB03ST is electrically and mechanically identical to the 76PSB03S. Both parts feature SPST circuit configuration, 3-position piano actuator, 150mA/30VDC ratings, and identical mechanical dimensions. The only differences are product status (active vs. obsolete) and packaging format (tube vs. bulk). No circuit redesign is required.

Q: What are the limitations of using the 194-3MST as a substitute?

A: The 194-3MST has reduced electrical ratings: 50mA maximum current (vs. 150mA) and 24VDC maximum voltage (vs. 30VDC). Substitution is valid only if the application circuit operates within these lower limits. The mechanical form factor and mounting configuration are compatible. Height above board differs slightly (0.311" vs. 0.301"), which may require PCB layout verification in space-constrained designs.

Q: Does packaging format affect functional performance?

A: No. The 76PSB03ST is supplied in tube packaging while the 76PSB03S was supplied in bulk. Packaging format affects only inventory management, handling, and assembly procedures. Electrical and mechanical performance are identical.

Q: Are there any temperature or environmental differences between the substitute parts?

A: All three parts (76PSB03S, 76PSB03ST, 194-3MST) operate across the identical temperature range of -40°C to 85°C. All parts are rated for unlimited moisture sensitivity (MSL 1). Environmental performance is equivalent across all three options.

Q: Which substitute part should be selected for new designs?

A: For new designs, the 76PSB03ST is the preferred choice. It provides active product status, ROHS3 compliance, and identical electrical specifications to the original 76PSB03S. The 194-3MST should be selected only when design constraints require reduced current/voltage ratings or when extended electrical life (7,000 cycles) is a specific requirement.

Q: How do the mechanical life ratings compare?

A: The 76PSB03S and 76PSB03ST both specify 2,000 mechanical cycles. The 194-3MST does not provide a mechanical life specification in the available data. For applications requiring high mechanical cycling, the Grayhill parts (76PSB03S/76PSB03ST) provide documented performance metrics.