Grayhill 79A10 DIP Switch Equivalent & Substitute Parts

Part Overview

The Grayhill 79A10 is a 10-position slide-actuated DIP switch designed for through-hole mounting in electronic assemblies. This component features a 10PST (10 Pole Single Throw) circuit configuration with a 125mA current rating at 6VDC, making it suitable for logic-level switching applications in industrial and consumer electronics.

The 79A10 is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, repair, and production continuity. The primary substitute maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Substiute Parts

79A10

Grayhill Inc.In Stock: 89279A10 Datasheet

Current PartRFQ

79A10T

Grayhill Inc.In Stock: 182079A10T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Grayhill 79A10 is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match Exactly):

• Circuit configuration: 10PST
• Number of positions: 10
• Voltage rating: 6VDC
• Current rating: 125mA minimum

Mechanical Parameters (Must Match Exactly):

• Actuator type: Slide (Standard) with raised level
• Mounting method: Through hole
• Pin pitch: 0.100" (2.54mm)
• Height above board: 0.250" (6.35mm)
• Termination style: PC Pin
• Overall length: 1.180" (29.97mm)

Material & Environmental Parameters (Must Match Exactly):

• Contact material: Copper alloy
• Contact finish: Gold
• Operating temperature range: -40°C to 85°C
• Body material: Plastic

The Grayhill 79A10T satisfies all substitution criteria as a direct equivalent part.

Parameter Comparison

Engineering Selection Recommendations

The Grayhill 79A10T is the direct equivalent substitute for the obsolete 79A10 DIP switch. Selection of the 79A10T is based on the following engineering factors:

Functional Equivalence: The 79A10T maintains identical electrical specifications (10PST, 125mA, 6VDC) and mechanical form factor (through-hole, 0.100" pitch, 0.250" height), ensuring direct PCB compatibility without design modification.

Product Availability: The 79A10 is obsolete with limited remaining inventory. The 79A10T is an active product with substantially higher stock levels (1,712 units versus 855 units), supporting both immediate and long-term supply requirements.

Regulatory Compliance: The 79A10T achieves RoHS3 compliance, whereas the 79A10 is non-compliant. For applications subject to RoHS directives or customer compliance requirements, the 79A10T is the appropriate selection.

Packaging Consideration: The 79A10T is supplied in tube packaging, whereas the 79A10 is supplied in bulk. Tube packaging provides improved component protection during storage and handling. Reel or tape packaging is not available for this product line.

Environmental and Regulatory Status: Both parts maintain identical REACH unaffected status, EAR99 export classification, and HTSUS coding. No additional regulatory barriers exist to substitution.

Frequently Asked Questions (FAQ)

Q: Can the 79A10T be used as a direct replacement for the 79A10 without PCB modification?

A: Yes. The 79A10T is a direct equivalent with identical pin pitch (0.100"), height above board (0.250"), and through-hole termination. No PCB layout changes are required.

Q: What is the difference between the 79A10 and 79A10T?

A: The primary differences are product status and compliance. The 79A10 is obsolete and RoHS non-compliant; the 79A10T is an active product with RoHS3 compliance. Electrical and mechanical specifications are identical. Packaging differs (bulk versus tube).

Q: Are there any electrical performance differences between these parts?

A: No. Both parts have identical current rating (125mA), voltage rating (6VDC), circuit configuration (10PST), operating temperature range (-40°C to 85°C), mechanical life (4,000 cycles), and electrical life (2,000 cycles).

Q: Why should I choose the 79A10T over the 79A10?

A: The 79A10T is recommended for new designs and ongoing production due to active product status, higher availability, and RoHS3 compliance. The 79A10 should be used only when existing inventory must be consumed or when legacy system repair requires exact original part matching.

Q: Does the tube packaging of the 79A10T affect compatibility?

A: No. Packaging format does not affect component electrical or mechanical performance. Tube packaging provides superior protection compared to bulk packaging during storage and transport.

Q: What is the mechanical life specification, and why does it matter?

A: Mechanical life is 4,000 cycles for both parts. This specification indicates the number of actuator position changes the switch can withstand. For applications with frequent manual switching, this specification defines the expected service life.

Q: Can I use the 79A10T in applications requiring RoHS compliance?

A: Yes. The 79A10T is RoHS3 compliant and is suitable for all applications subject to RoHS directives. The 79A10 is non-compliant and should not be used in RoHS-regulated applications.

Q: Are there any temperature or environmental limitations I should consider?

A: Both parts operate across -40°C to 85°C. Moisture sensitivity level is 1 (unlimited), indicating no special moisture protection requirements during storage or handling.