Grayhill 78RB07S DIP Switch Equivalent & Substitute Parts

Part Overview

The Grayhill 78RB07S is a single-pole single-throw (SPST) slide-actuated DIP switch designed for through-hole mounting applications. This component features a 7-position configuration with a 150mA current rating at 30VDC, making it suitable for low-signal switching and logic circuit applications. The 78RB07S is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and component procurement.

Substiute Parts

78RB07S

Grayhill Inc.In Stock: 102678RB07S Datasheet

Current PartRFQ

78RB07ST

Grayhill Inc.In Stock: 530978RB07ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78RB07S is determined by strict equivalence across the following critical parameters:

• Circuit topology: SPST configuration
• Position count: 7-position array
• Electrical ratings: 150mA at 30VDC maximum
• Physical form factor: Slide actuator, through-hole mounting, 0.100" pitch
• Mechanical envelope: Height and length dimensions
• Contact system: Copper alloy with gold finish
• Environmental specifications: Operating temperature range and lifecycle ratings

The substitute part must match all these parameters without deviation. Packaging format and product status (active versus obsolete) do not affect functional substitutability but influence procurement availability and compliance posture.

Parameter Comparison

Engineering Selection Recommendations

The 78RB07ST is a direct functional equivalent to the 78RB07S across all electrical, mechanical, and environmental parameters. The primary distinctions are non-functional:

Product Status: The 78RB07S is obsolete, while the 78RB07ST is active. For new designs and ongoing procurement, the 78RB07ST is the appropriate selection due to continued manufacturer support and availability.

Regulatory Compliance: The 78RB07ST achieves ROHS3 compliance, whereas the 78RB07S is non-compliant. For applications subject to RoHS directives or customer compliance requirements, the 78RB07ST satisfies regulatory obligations.

Packaging Format: The 78RB07S is supplied in bulk packaging, while the 78RB07ST is supplied in tube packaging. Packaging selection depends on assembly process requirements and inventory management practices.

All three differences are administrative or logistical in nature and do not affect circuit-level performance or pin compatibility. Direct substitution is valid for all applications where the 78RB07S was previously specified.

Frequently Asked Questions (FAQ)

Q: Can the 78RB07ST be used as a direct replacement for the 78RB07S in existing designs?

A: Yes. The 78RB07ST is electrically and mechanically identical to the 78RB07S. Pin configuration, electrical ratings, physical dimensions, and performance characteristics are equivalent. No circuit modifications are required.

Q: What is the difference between the 78RB07S and 78RB07ST?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), and packaging format (bulk versus tube). Functional performance is identical.

Q: Why is the 78RB07S listed as obsolete?

A: Obsolescence indicates that the manufacturer has discontinued production of this specific part number. The 78RB07ST represents the active production equivalent and should be used for new procurement.

Q: Does the tube packaging of the 78RB07ST affect compatibility?

A: No. Packaging format is a logistics consideration only and does not affect electrical or mechanical compatibility. The component itself is identical regardless of packaging.

Q: Is the 78RB07ST suitable for applications requiring RoHS compliance?

A: Yes. The 78RB07ST is ROHS3 compliant. If your application or customer requirements mandate RoHS compliance, the 78RB07ST satisfies these requirements, whereas the 78RB07S does not.

Q: Are there any performance differences between the two parts?

A: No. Both parts have identical electrical ratings (150mA at 30VDC), mechanical life (2,000 cycles), electrical life (2,000 cycles), operating temperature range (-40°C to 85°C), and physical dimensions.

Q: Can I mix 78RB07S and 78RB07ST components in the same assembly?

A: Yes. Since the parts are functionally identical, they can be used interchangeably within the same assembly without affecting performance or reliability.