76MRSB04S DIP Switch Rocker SPST Equivalent & Substitute Parts

Part Overview

The 76MRSB04S is a DIP switch rocker actuator manufactured by Grayhill Inc., designed for through-hole mounting applications requiring single-pole single-throw (SPST) switching functionality. This component operates at 150mA and 30VDC with a 4-position configuration and flush rocker actuator. The 76MRSB04S is classified as obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy and new applications utilizing compatible electrical and mechanical specifications.

Substiute Parts

76MRSB04S

Grayhill Inc.In Stock: 119076MRSB04S Datasheet

Current PartRFQ

76RSB04ST

Grayhill Inc.In Stock: 590876RSB04ST Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 76MRSB04S are identified based on strict electrical and mechanical parameter matching within the Grayhill 76 series DIP switch product line. Substitution eligibility requires equivalence across the following critical parameters:

Electrical Parameters: Circuit configuration (SPST), number of positions (4), current rating (150mA), and voltage rating (30VDC) must be identical.

Mechanical Parameters: Actuator type (rocker), actuator level (flush/recessed), mounting method (through hole), termination style (PC pin), pitch (0.100"/2.54mm), and height above board (0.292"/7.41mm) must match.

Material and 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 consistent.

Compliance Parameters: RoHS3 compliance and MSL rating (1) must be maintained.

The 76RSB04ST qualifies as a direct substitute based on complete alignment with all specified parameters. The primary distinction is product status (active versus obsolete) and packaging format (tube versus tape seal).

Parameter Comparison

Engineering Selection Recommendations

The 76RSB04ST is a direct functional and mechanical equivalent to the 76MRSB04S. Both components share identical electrical specifications, mechanical dimensions, contact materials, and environmental operating parameters. The 76RSB04ST maintains ROHS3 compliance and MSL rating 1 status, ensuring regulatory and environmental compatibility.

The primary distinction between these parts is product lifecycle status: the 76MRSB04S is classified as obsolete, while the 76RSB04ST is active production. For new designs and ongoing production requirements, the 76RSB04ST is the appropriate selection. The 76RSB04ST is available in tube packaging, whereas the 76MRSB04S was supplied with tape seal packaging. This packaging difference does not affect electrical or mechanical performance and is a logistics consideration only.

Both components are suitable for applications requiring 4-position DIP switch functionality at 150mA and 30VDC with through-hole mounting and rocker actuator operation across the -40°C to 85°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 76RSB04ST replace the 76MRSB04S in existing designs?

A: Yes. The 76RSB04ST is electrically and mechanically equivalent to the 76MRSB04S. All critical parameters including circuit configuration, current and voltage ratings, actuator type, mounting dimensions, and contact specifications are identical. Direct substitution is supported without design modification.

Q: What is the difference between tape seal and tube packaging?

A: Tape seal and tube packaging are logistics and handling formats only. They do not affect component electrical performance, mechanical function, or reliability. Tape seal packaging uses adhesive-sealed tape reels, while tube packaging uses plastic tubes. Selection depends on assembly equipment compatibility and inventory management requirements.

Q: Why is the 76MRSB04S listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production of this specific part number. The 76RSB04ST represents the active production equivalent within the same product series and maintains all functional specifications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the 76MRSB04S and 76RSB04ST maintain identical RoHS3 compliance, MSL rating 1 (unlimited moisture sensitivity level), REACH unaffected status, and ECCN/HTSUS classifications.

Q: What is the mechanical life specification, and how does it affect component selection?

A: Both parts specify 2,000 mechanical cycles and 2,000 electrical cycles. This rating defines the expected operational lifespan under normal switching conditions. For applications requiring higher cycle counts, alternative product lines should be evaluated.

Q: Can these components be used in washable applications?

A: Yes. Both the 76MRSB04S and 76RSB04ST are specified as washable, supporting cleaning processes in manufacturing environments.

Q: What is the pitch specification, and why is it important?

A: Pitch is the center-to-center distance between adjacent switch positions, specified as 0.100" (2.54mm) for both parts. This dimension is critical for PCB layout and footprint design. Identical pitch ensures direct board-level compatibility.