Equivalent & Substitute Parts for Grayhill 76PSB08S DIP Switch

Part Overview

The Grayhill 76PSB08S is an 8-position SPST piano DIP switch rated for 150mA at 30VDC with through-hole, right-angle mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The 76PSB08S features gold-plated copper alloy contacts, thermoplastic housing, and operates across -40°C to 85°C. Substitutes must maintain functional compatibility across circuit topology, electrical ratings, and mechanical form factor.

Substiute Parts

76PSB08S

Grayhill Inc.In Stock: 228276PSB08S Datasheet

Current PartRFQ

76PSB08ST

Grayhill Inc.In Stock: 693476PSB08ST Datasheet

DirectRFQ

194-8MST

CTS ElectrocomponentsIn Stock: 6855194-8MST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with electrical and mechanical parameters. The following criteria establish valid substitutes:

Primary Equivalence (76PSB08ST): This Grayhill part maintains identical specifications across all critical parameters: 8-position SPST configuration, 150mA current rating, 30VDC voltage rating, piano actuator, through-hole right-angle mounting, and 0.100" pitch. The only differences are packaging format (tube versus tape seal) and product status (active versus obsolete). RoHS3 compliance of the substitute provides regulatory advantage over the non-compliant main part.

Secondary Substitute (194-8MST): This CTS Electrocomponents part shares the same circuit topology (SPST), position count (8), actuator type (piano), mounting configuration (through-hole right-angle), and pitch (0.100"). However, it operates at reduced electrical ratings: 50mA current and 24VDC voltage. This part is suitable only for applications where the lower electrical ratings are acceptable. The substitute demonstrates superior electrical life (7,000 cycles versus 2,000 cycles) and includes epoxy-sealed terminals for enhanced environmental protection.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The 76PSB08ST is the primary substitute for the obsolete 76PSB08S. Both parts are manufactured by Grayhill and maintain identical electrical and mechanical specifications. The 76PSB08ST is currently in active production with 6,892 units in stock. Selection of this part eliminates obsolescence risk while maintaining full functional compatibility. The upgrade to ROHS3 compliance provides regulatory advantage for new designs and manufacturing environments subject to RoHS directives.

For Constrained Applications: The 194-8MST from CTS Electrocomponents is suitable only when application requirements permit reduced electrical ratings (50mA maximum current, 24VDC maximum voltage). This part offers extended electrical life (7,000 cycles) and epoxy-sealed terminals, providing enhanced durability in moisture-sensitive environments. The 0.010" (0.25mm) increase in height above board (7.90mm versus 7.65mm) must be verified against PCB clearance constraints. This substitute is appropriate for low-power signal switching applications where the lower current and voltage ratings are acceptable.

Compliance Considerations: Both substitute parts carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The main part 76PSB08S is RoHS non-compliant and should be phased out in favor of compliant alternatives for new production.

Frequently Asked Questions (FAQ)

Q: Can the 194-8MST directly replace the 76PSB08S in all applications?

A: No. The 194-8MST operates at 50mA and 24VDC, compared to the 76PSB08S ratings of 150mA and 30VDC. Direct substitution is valid only for circuits designed to operate within the lower electrical ratings. Applications requiring the full 150mA at 30VDC must use the 76PSB08ST.

Q: What is the primary difference between 76PSB08S and 76PSB08ST?

A: The 76PSB08ST is the active production equivalent of the obsolete 76PSB08S. Electrical and mechanical specifications are identical. The main differences are product status (active versus obsolete), packaging format (tube versus tape seal), and RoHS compliance (ROHS3 versus non-compliant). The 76PSB08ST is the recommended replacement.

Q: Are there PCB layout considerations when substituting the 194-8MST?

A: Yes. The 194-8MST has a height above board of 0.311" (7.90mm) compared to 0.301" (7.65mm) for the 76PSB08S. Verify that PCB clearance and component spacing accommodate this 0.010" increase. All other mechanical dimensions and pitch specifications are compatible.

Q: Does the 194-8MST provide better reliability than the 76PSB08S?

A: The 194-8MST demonstrates superior electrical life (7,000 cycles versus 2,000 cycles) and includes epoxy-sealed terminals for enhanced environmental protection. However, these advantages apply only within the part's reduced electrical rating envelope (50mA, 24VDC). For applications requiring full 150mA at 30VDC operation, the 76PSB08ST maintains the same reliability profile as the original part.

Q: What is the inventory status for substitutes?

A: The 76PSB08ST has 6,892 units in stock. The 194-8MST has 6,822 units in stock. Both parts are available for immediate procurement.

Q: Are all three parts washable?

A: Yes. The 76PSB08S, 76PSB08ST, and 194-8MST are all washable, supporting standard PCB cleaning processes.