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Grayhill 76MSB12S DIP Switch Equivalent & Substitute Parts
Part Overview
The Grayhill 76MSB12S is a 12-position DIP switch with rocker actuator, rated for 150mA at 30VDC, designed for through-hole mounting applications. This component features gold-plated copper alloy contacts, thermoplastic housing, and is rated for 2,000 mechanical and electrical cycles. The 76MSB12S is classified as obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Circuit Configuration | SPST (Single Pole Single Throw) |
| Number of Positions | 12 |
| Current Rating | 150mA |
| Voltage Rating | 30VDC |
| Actuator Type | Rocker, Raised Level |
| Contact Material | Copper Alloy with Gold Finish |
| Mounting Type | Through Hole |
| Termination Style | PC Pin |
| Pitch | 0.100" (2.54mm) |
| Height Above Board | 0.315" (8.00mm) |
| Operating Temperature Range | -40°C to 85°C |
| Mechanical Life | 2,000 Cycles |
| Electrical Life | 2,000 Cycles |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 76MSB12S is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications in the following categories:
Electrical Parameters: Circuit configuration (SPST), number of positions (12), current rating (150mA), and voltage rating (30VDC) must be identical.
Mechanical Parameters: Actuator type (rocker), actuator level (raised), contact material (copper alloy with gold finish), mounting type (through hole), termination style (PC pin), and pitch (0.100" / 2.54mm) must be identical.
Environmental Parameters: Operating temperature range (-40°C to 85°C), mechanical life (2,000 cycles), and electrical life (2,000 cycles) must be identical.
Compliance Parameters: RoHS3 compliance and MSL rating (1) must be maintained.
The 76SB12ST meets all these criteria and is therefore a direct electrical and mechanical equivalent.
Parameter Comparison
| Parameter | 76MSB12S (Main Part) | 76SB12ST (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Grayhill Inc. | Grayhill Inc. | Identical |
| Series | 76 | 76 | Identical |
| Circuit Configuration | SPST | SPST | Identical |
| Number of Positions | 12 | 12 | Identical |
| Current Rating | 150mA | 150mA | Identical |
| Voltage Rating | 30VDC | 30VDC | Identical |
| Actuator Type | Rocker | Rocker | Identical |
| Actuator Level | Raised | Raised | Identical |
| Contact Material | Copper Alloy | Copper Alloy | Identical |
| Contact Finish | Gold | Gold | Identical |
| Height Above Board | 0.315" (8.00mm) | 0.315" (8.00mm) | Identical |
| Mounting Type | Through Hole | Through Hole | Identical |
| Termination Style | PC Pin | PC Pin | Identical |
| Pitch | 0.100" (2.54mm) | 0.100" (2.54mm) | Identical |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Identical |
| Mechanical Life | 2,000 Cycles | 2,000 Cycles | Identical |
| Electrical Life | 2,000 Cycles | 2,000 Cycles | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Product Status | Obsolete | Active | Substitute is Active |
| Packaging | Tape Seal | Tube | Different |
Engineering Selection Recommendations
The 76SB12ST is a direct functional equivalent to the 76MSB12S across all electrical, mechanical, and environmental specifications. The primary distinction is product status: the 76MSB12S is obsolete while the 76SB12ST is active, making the latter the appropriate selection for new designs and ongoing production requirements.
Both parts maintain identical compliance certifications including ROHS3 compliance, REACH unaffected status, and MSL rating of 1. The 76SB12ST is supplied in tube packaging, whereas the 76MSB12S was supplied with tape seal packaging. This packaging difference does not affect electrical or mechanical performance and is a standard variation in component distribution.
For applications currently using the 76MSB12S, direct substitution with the 76SB12ST is supported without circuit redesign or board layout modification, provided that packaging and handling procedures are adjusted to accommodate tube packaging.
Frequently Asked Questions (FAQ)
Q: Can the 76SB12ST be used as a direct replacement for the 76MSB12S in existing designs?
A: Yes. The 76SB12ST is electrically and mechanically identical to the 76MSB12S. All electrical parameters (150mA, 30VDC, SPST, 12-position), mechanical parameters (rocker actuator, through-hole mounting, 0.100" pitch), and environmental ratings (2,000 cycle life, -40°C to 85°C operation) are identical. No circuit or board layout changes are required.
Q: What is the difference between the 76MSB12S and 76SB12ST?
A: The primary differences are product status and packaging. The 76MSB12S is obsolete and was supplied with tape seal packaging. The 76SB12ST is an active product supplied in tube packaging. All functional specifications are identical.
Q: Are there any compatibility concerns with the different packaging formats?
A: No compatibility concerns exist regarding electrical or mechanical performance. The packaging difference (tape seal versus tube) affects only component handling, storage, and distribution logistics. The components themselves are functionally identical.
Q: Does the 76SB12ST meet the same compliance requirements as the 76MSB12S?
A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (unlimited moisture sensitivity level). Compliance certifications are identical.
Q: What is the base product number for the 76SB12ST?
A: The base product number is 76SB, which identifies the product family within the Grayhill 76 series DIP switch line.
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