76RSC03T Equivalent & Substitute Parts Reference

Part Overview

The 76RSC03T is a DIP rocker switch manufactured by Grayhill Inc., featuring SPDT (Single Pole Double Throw) circuit configuration with 3 positions. This component is rated for 150mA at 30VDC and utilizes through-hole PC pin termination with gold-plated copper alloy contacts. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement planning.

Substiute Parts

76RSC03T

Grayhill Inc.In Stock: 112776RSC03T Datasheet

Current PartRFQ

76RSC04T

Grayhill Inc.In Stock: 81676RSC04T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 76RSC03T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Grayhill Inc.
• Series: 76
• Circuit Configuration: SPDT
• Current Rating: 150mA
• Voltage Rating: 30VDC
• Actuator Type: Rocker
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Pitch: 0.100" (2.54mm)
• Contact Material: Copper Alloy
• Contact Finish: Gold
• Operating Temperature Range: -40°C to 85°C
• Mechanical Life: 2,000 Cycles
• Electrical Life: 2,000 Cycles

Allowable Variation Parameters:

• Number of Positions: May differ based on circuit design requirements
• Physical dimensions (Length, Height): May vary with position count
• Product Status: Active status preferred for new designs
• Packaging format: May differ (tube vs. bulk)
• RoHS compliance level: ROHS3 acceptable as upgrade from RoHS Compliant

The 76RSC04T qualifies as a substitute based on full alignment with all mandatory parameters while differing only in position count (4 vs. 3) and resulting physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

For 76RSC03T Replacement:

The 76RSC04T is the qualified substitute for the obsolete 76RSC03T. Selection of the 76RSC04T is supported by the following factors:

1. Electrical Equivalence: Identical SPDT circuit configuration, current rating (150mA), and voltage rating (30VDC) ensure functional compatibility in switching applications.

2. Mechanical Compatibility: Identical pitch (0.100"), termination style (PC Pin), and height above board (0.267") confirm PCB layout compatibility. The increased length (0.780" vs. 0.580") results solely from the additional position and does not affect electrical performance.

3. Product Status: The 76RSC04T maintains active product status, ensuring continued availability and manufacturing support compared to the obsolete 76RSC03T.

4. Compliance Upgrade: The 76RSC04T carries ROHS3 compliance, representing an enhanced regulatory status relative to the RoHS Compliant designation of the main part.

5. Reliability Metrics: Identical mechanical and electrical life ratings (2,000 cycles each) and operating temperature range (-40°C to 85°C) confirm equivalent performance characteristics.

Design Consideration: The 76RSC04T provides one additional switch position. Circuit designs utilizing only 3 positions may leave the 4th position unused, or designs may be modified to utilize the additional position for enhanced functionality.

Frequently Asked Questions (FAQ)

Q: Can the 76RSC04T directly replace the 76RSC03T on existing PCBs?

A: The 76RSC04T is mechanically compatible with PCBs designed for the 76RSC03T. The identical pitch (0.100"), termination style (PC Pin), and height above board (0.267") ensure proper fit. The increased overall length (0.780" vs. 0.580") does not affect mounting compatibility. Verify available board space accommodates the longer component body.

Q: What is the primary difference between these two parts?

A: The 76RSC04T provides 4 switch positions compared to the 76RSC03T's 3 positions. All electrical parameters (SPDT circuit, 150mA, 30VDC) and mechanical specifications remain identical. The position count difference results in a 0.200" (5.08mm) increase in overall length.

Q: Are there any compliance differences between the 76RSC03T and 76RSC04T?

A: Both parts are RoHS compliant. The 76RSC04T carries ROHS3 compliance, which represents an updated regulatory classification. Both parts are REACH Unaffected and carry EAR99 ECCN classification. MSL rating is identical at Level 1 (Unlimited).

Q: Why is the 76RSC03T listed as obsolete?

A: The 76RSC03T is classified as obsolete by Grayhill Inc. The 76RSC04T, with active product status, represents the current manufacturing equivalent within the 76 series rocker switch family.

Q: What packaging formats are available?

A: The 76RSC03T was supplied in standard packaging. The 76RSC04T is available in tube packaging. Confirm packaging requirements for your procurement process.

Q: Are the contact materials and finishes identical?

A: Yes. Both parts utilize copper alloy contacts with gold finish, ensuring equivalent electrical performance and corrosion resistance across the operating temperature range of -40°C to 85°C.

Q: Can I use the 76RSC04T in applications requiring exactly 3 positions?

A: The 76RSC04T provides 4 independent switch positions. Applications requiring exactly 3 positions may leave the 4th position unused, or circuit designs may be modified to utilize all 4 positions. The electrical and mechanical specifications of the active 3 positions remain identical to the 76RSC03T.