Grayhill 78M06S DIP Switch Equivalent & Substitute Parts

Part Overview

The Grayhill 78M06S is a 6-position slide actuator DIP switch rated for 150mA at 30VDC, designed for through-hole PCB mounting applications. This component features gold-plated copper alloy contacts, thermoplastic housing, and operates across the industrial temperature range of -40°C to 85°C. The 78M06S is classified as obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

78M06S

Grayhill Inc.In Stock: 116878M06S Datasheet

Current PartRFQ

78B06ST

Grayhill Inc.In Stock: 605778B06ST Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78M06S is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Circuit configuration (SPST), number of positions (6), current rating (150mA), and voltage rating (30VDC) must be identical. These parameters define the functional switching capability and load-handling capacity.

Mechanical Parameters: Actuator type (slide standard), mounting method (through hole), pitch spacing (0.100" / 2.54mm), and height above board (0.315" / 8.00mm) must match to ensure PCB layout compatibility and assembly feasibility.

Material & Environmental Parameters: Contact material (copper alloy), contact finish (gold), operating temperature range (-40°C to 85°C), mechanical life (2,000 cycles), and electrical life (2,000 cycles) must be maintained to preserve reliability and performance characteristics.

The Grayhill 78B06ST meets all substitution criteria as a direct functional equivalent to the 78M06S.

Parameter Comparison

Engineering Selection Recommendations

The Grayhill 78B06ST is the direct functional substitute for the obsolete 78M06S. All electrical, mechanical, and environmental parameters are identical, ensuring drop-in compatibility at the component level.

Product Status Consideration: The 78M06S is classified as obsolete, while the 78B06ST maintains active product status. This distinction is significant for long-term supply chain reliability and technical support availability.

Regulatory Compliance: The 78B06ST achieves ROHS3 compliance, whereas the 78M06S is RoHS non-compliant. For applications subject to RoHS directives or customer requirements mandating RoHS compliance, the 78B06ST provides regulatory alignment without functional compromise.

Packaging Difference: The 78M06S is supplied in standard packaging, while the 78B06ST is supplied in tube packaging. This packaging variation does not affect electrical or mechanical performance and is a procurement consideration only.

Inventory Availability: The 78B06ST maintains significantly higher inventory levels (5,951 pieces) compared to the 78M06S (1,064 pieces), supporting procurement continuity and lead-time reduction.

Frequently Asked Questions (FAQ)

Q: Can the 78B06ST be used as a direct replacement for the 78M06S in existing designs?

A: Yes. The 78B06ST is electrically and mechanically identical to the 78M06S across all critical parameters. PCB layouts, schematic designations, and assembly processes require no modification. The substitute part is a direct drop-in replacement.

Q: What is the difference between the 78M06S and 78B06ST?

A: The primary differences are product status (78M06S is obsolete; 78B06ST is active), RoHS compliance (78M06S is non-compliant; 78B06ST is ROHS3 compliant), and packaging format (78M06S standard packaging; 78B06ST tube packaging). All functional and performance parameters are identical.

Q: Does the tube packaging of the 78B06ST affect component performance?

A: No. Packaging format is a logistics and handling consideration only. It does not alter electrical characteristics, mechanical dimensions, or reliability performance. The component itself is identical regardless of packaging method.

Q: Are there any temperature or voltage derating considerations when substituting the 78B06ST for the 78M06S?

A: No. Both parts operate identically across the -40°C to 85°C temperature range and maintain the same 30VDC voltage rating and 150mA current rating. No derating or operational adjustments are required.

Q: What is the significance of the ROHS3 compliance of the 78B06ST?

A: ROHS3 compliance indicates the 78B06ST meets current Restriction of Hazardous Substances directives. For applications or markets requiring RoHS compliance, the 78B06ST satisfies regulatory requirements, whereas the 78M06S does not. This is a regulatory consideration, not a performance consideration.

Q: Is the 78B06ST available in the same pitch and mounting configuration as the 78M06S?

A: Yes. Both parts feature 0.100" (2.54mm) pitch spacing, through-hole mounting, PC pin termination, and identical height above board (0.315" / 8.00mm). PCB footprints are identical.

Q: What is the mechanical and electrical life expectancy for the 78B06ST?

A: The 78B06ST is rated for 2,000 mechanical cycles and 2,000 electrical cycles, identical to the 78M06S. This specification defines the expected operational lifespan under normal switching conditions.