76PSB04S DIP Switch Piano Actuator Equivalent & Substitute Parts

Part Overview

The 76PSB04S is a 4-position DIP switch manufactured by Grayhill Inc., featuring a piano actuator with SPST circuit configuration rated for 150mA at 30VDC. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The part is designed for through-hole, right-angle mounting applications with gold-plated copper alloy contacts and operates across the industrial temperature range of -40°C to 85°C.

Substiute Parts

76PSB04S

Grayhill Inc.In Stock: 104576PSB04S Datasheet

Current PartRFQ

76PSB04ST

Grayhill Inc.In Stock: 231676PSB04ST Datasheet

DirectRFQ

194-4MST

CTS ElectrocomponentsIn Stock: 3497194-4MST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 76PSB04S is determined by strict alignment with the following critical parameters: SPST circuit configuration, 4-position count, through-hole right-angle mounting, 0.100" pitch, piano actuator type, and operating temperature range of -40°C to 85°C.

Primary Substitute (76PSB04ST): This Grayhill Inc. part maintains identical electrical and mechanical specifications to the 76PSB04S, including 150mA current rating and 30VDC voltage rating. The only substantive difference is product status (active versus obsolete) and packaging format (tube versus bulk). This part is a direct functional equivalent.

Secondary Substitute (194-4MST): This CTS Electrocomponents part shares the same circuit configuration, position count, mounting type, pitch, and operating temperature range. However, it operates at reduced electrical ratings (50mA at 24VDC versus 150mA at 30VDC). This part is suitable only for applications where the lower current and voltage specifications are acceptable within the circuit design.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The 76PSB04ST is the recommended substitute for the obsolete 76PSB04S. Both parts are manufactured by Grayhill Inc. and provide identical electrical performance (150mA at 30VDC), mechanical specifications, and operating characteristics. The 76PSB04ST carries active product status and ROHS3 compliance, addressing regulatory requirements for new designs. Packaging differences (tube versus bulk) do not affect functional compatibility.

For Constrained Applications: The 194-4MST from CTS Electrocomponents is suitable only when circuit requirements permit operation at 50mA and 24VDC. This part offers extended electrical life (7,000 cycles versus 2,000 cycles) and ROHS3 compliance. The marginal height difference (0.311" versus 0.301") must be evaluated against PCB layout constraints. Selection of this part requires explicit confirmation that reduced electrical ratings are acceptable for the intended application.

Compliance Considerations: Both substitute parts achieve ROHS3 compliance and REACH unaffected status, addressing modern regulatory requirements. The main part (76PSB04S) is RoHS non-compliant and should be replaced in new designs subject to these regulations.

Frequently Asked Questions (FAQ)

Q: Can the 76PSB04ST be used as a direct drop-in replacement for the 76PSB04S?

A: Yes. The 76PSB04ST provides identical electrical ratings (150mA at 30VDC), mechanical dimensions, pitch, and actuator configuration. The parts are functionally equivalent. Packaging format differs (tube versus bulk), but this does not affect circuit performance or PCB mounting.

Q: What are the limitations of using the 194-4MST as a substitute?

A: The 194-4MST operates at reduced electrical specifications: 50mA maximum current and 24VDC maximum voltage, compared to 150mA at 30VDC for the 76PSB04S. This part is suitable only for applications where these lower ratings satisfy circuit requirements. The height above board is 0.311" versus 0.301", requiring verification against PCB layout constraints.

Q: Are there any compliance differences between the main part and substitutes?

A: Yes. The 76PSB04S is RoHS non-compliant. Both substitute parts (76PSB04ST and 194-4MST) are ROHS3 compliant. For designs subject to RoHS regulations, substitution is necessary. All three parts are REACH unaffected.

Q: How do the mechanical life specifications compare?

A: The 76PSB04S and 76PSB04ST both specify 2,000 mechanical cycles. The 194-4MST does not provide a mechanical life specification in the available data. The 194-4MST specifies 7,000 electrical cycles, compared to 2,000 for the other parts.

Q: What is the significance of the pitch specification?

A: All three parts share a 0.100" (2.54mm) pitch, ensuring compatibility with standard DIP switch footprints and PCB layouts designed for this spacing. This parameter is critical for mechanical interchangeability.

Q: Can the 76PSB04S be used in new product designs?

A: No. The 76PSB04S is classified as obsolete and is RoHS non-compliant. New designs should specify either the 76PSB04ST (for full electrical performance) or the 194-4MST (for applications with reduced electrical requirements and extended electrical life).