Grayhill 78B10S DIP Switch - Equivalent & Substitute Parts

Part Overview

The Grayhill 78B10S is a 10-position slide actuator DIP switch rated for 150mA at 30VDC with SPST circuit configuration. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 78B10S features through-hole mounting, gold-plated copper alloy contacts, and is suitable for applications requiring washable, sealed switch assemblies with standard slide actuation.

Substiute Parts

78B10S

Grayhill Inc.In Stock: 104678B10S Datasheet

Current PartRFQ

78B10ST

Grayhill Inc.In Stock: 629778B10ST Datasheet

DirectRFQ

206-10ST

CTS ElectrocomponentsIn Stock: 1790206-10ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 78B10S are grouped based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Circuit configuration (SPST)
• Number of positions (10)
• Actuator type (Slide, Standard)
• Mounting type (Through Hole)
• Pitch spacing (0.100" / 2.54mm)
• Contact finish (Gold)
• Washable design capability
• Operating temperature range overlap

Substitution Logic:

The 78B10ST (Grayhill Inc.) is a direct equivalent substitute. It maintains identical electrical ratings (150mA, 30VDC), mechanical specifications, and physical dimensions. The primary distinction is product status: 78B10ST is active production with higher inventory availability (6245 pcs vs. 1021 pcs for 78B10S) and tube packaging versus the original packaging.

The 206-10ST (CTS Electrocomponents) is a functional substitute with parameter deviations. While it maintains the same circuit configuration, position count, actuator type, mounting method, and pitch, it operates at reduced electrical ratings (50mA at 24VDC versus 150mA at 30VDC). This part is suitable only for applications with lower current and voltage requirements. The 206-10ST offers extended electrical life (10,000 cycles versus 2,000 cycles) and broader operating temperature range (-55°C to 85°C).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

The 78B10ST is the recommended substitute for the obsolete 78B10S. Both parts maintain identical electrical specifications (150mA, 30VDC), mechanical life (2,000 cycles), and physical dimensions. The 78B10ST is in active production status with significantly higher inventory availability. Both parts carry ROHS3 compliance and REACH unaffected status. Selection of 78B10ST eliminates obsolescence risk while preserving all functional and compliance characteristics of the original design.

For Reduced-Load Applications:

The 206-10ST (CTS Electrocomponents) is suitable only for applications where circuit requirements do not exceed 50mA at 24VDC. This part offers extended electrical life (10,000 cycles) and broader operating temperature range (-55°C to 85°C). The 206-10ST maintains ROHS3 compliance and REACH unaffected status. Physical compatibility is confirmed through identical pitch (0.100"), mounting type (Through Hole), and circuit configuration (SPST, 10 positions). Height above board differs by 0.019" (0.48mm), requiring PCB layout verification. Selection of 206-10ST is restricted to designs with lower electrical demands than the original 78B10S specification.

Frequently Asked Questions (FAQ)

Q: Can the 78B10ST be used as a direct replacement for the 78B10S in existing designs?

A: Yes. The 78B10ST is electrically and mechanically identical to the 78B10S. Both parts are rated for 150mA at 30VDC, feature identical physical dimensions, and maintain the same operating temperature range (-40°C to 85°C). The primary difference is product status: 78B10ST is in active production. No design modifications are required.

Q: What are the limitations of using the 206-10ST as a substitute?

A: The 206-10ST operates at reduced electrical ratings: 50mA maximum current at 24VDC, compared to the 78B10S specification of 150mA at 30VDC. This part is suitable only for applications with lower power requirements. Additionally, the 206-10ST height above board is 0.334" (8.48mm) versus 0.315" (8.00mm) for the 78B10S, requiring verification of PCB clearance and component spacing.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. Both the 78B10ST and 206-10ST are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 78B10S.

Q: What is the difference in packaging between 78B10S and 78B10ST?

A: The 78B10S original packaging is not specified in the technical data. The 78B10ST is supplied in tube packaging. Confirm packaging requirements with your procurement specifications before ordering.

Q: Can the 206-10ST be used in high-current applications?

A: No. The 206-10ST is rated for maximum 50mA, making it unsuitable for applications requiring the 150mA capability of the 78B10S. Use of the 206-10ST in applications exceeding its current rating will result in component failure and circuit malfunction.

Q: What is the mechanical life difference between the 78B10ST and 206-10ST?

A: The 78B10ST specifies 2,000 mechanical cycles, identical to the 78B10S. The 206-10ST does not specify mechanical life in the technical data. The 206-10ST does specify 10,000 electrical cycles, compared to 2,000 cycles for the 78B10S and 78B10ST.

Q: Are there any temperature range considerations when selecting a substitute?

A: The 78B10S and 78B10ST both operate from -40°C to 85°C. The 206-10ST extends the lower operating limit to -55°C. If your application requires operation below -40°C, the 206-10ST is the only option among these three parts, provided current and voltage requirements do not exceed 50mA at 24VDC.