Grayhill 97R04RT DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The Grayhill 97R04RT is a surface mount DIP switch featuring SPST (Single Pole Single Throw) circuit configuration with 4 positions, rated for 25mA at 24VDC. This component is classified as Active product status and is RoHS Compliant. Alternative equivalent parts may be required due to inventory constraints, specific packaging requirements, or application-specific performance parameters such as operating temperature range, contact material specifications, or mechanical life ratings.

Substiute Parts

97R04RT

Grayhill Inc.In Stock: 114597R04RT Datasheet

Current PartRFQ

218-4LPST

CTS ElectrocomponentsIn Stock: 6599218-4LPST Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Grayhill 97R04RT is determined by strict alignment with the following core parameters:

Mandatory Matching Parameters:

• Circuit type: SPST
• Number of positions: 4
• Current rating: 25mA minimum
• Voltage rating: 24VDC
• Mounting type: Surface Mount
• Pitch: 0.050" (1.27mm), Half
• Termination style: Gull Wing
• Actuator type: Slide (Standard)

Acceptable Variation Parameters:

• Contact material (Copper Alloy or Beryllium Copper)
• Contact finish (Gold plating)
• Height above board (within mechanical clearance limits)
• Operating temperature range (substitute may exceed specified range)
• Body material composition
• Mechanical or electrical life ratings (substitute may exceed specified cycles)
• Packaging format (Tube or alternative)
• Washable feature (additional capability acceptable)

The CTS Electrocomponents 218-4LPST meets all mandatory matching parameters and qualifies as a direct substitute for the Grayhill 97R04RT.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: Grayhill 97R04RT

The Grayhill 97R04RT is the specified component and remains the first choice when available. It carries Active product status, RoHS Compliance certification, and REACH Unaffected designation. Current inventory is 1,085 pieces.

Approved Substitute: CTS Electrocomponents 218-4LPST

The CTS 218-4LPST qualifies as a direct functional equivalent based on matching all mandatory electrical and mechanical parameters. Selection of this substitute is appropriate when:

• Grayhill 97R04RT inventory is unavailable or depleted
• Extended operating temperature range (-55°C vs. -40°C minimum) is beneficial for the application
• Beryllium Copper contact material is acceptable for the circuit environment
• Washable feature and epoxy sealed terminals provide additional environmental protection
• ROHS3 Compliance status meets or exceeds project requirements
• Tube packaging format is compatible with assembly processes

Both parts carry identical electrical ratings (25mA, 24VDC), circuit configuration (SPST, 4 positions), and regulatory classifications (EAR99, HTSUS 8536.50.9065). Physical dimensions are within acceptable tolerance for PCB footprint compatibility. Current inventory for the CTS substitute is 6,561 pieces.

Frequently Asked Questions (FAQ)

Q: Can the CTS 218-4LPST be used as a direct replacement for the Grayhill 97R04RT on existing PCBs?

A: Yes. Both parts share identical pitch (0.050" half), termination style (Gull Wing), and mounting type (Surface Mount). Physical dimensions vary slightly (height: 0.061" vs. 0.104"; length: 0.248" vs. 0.246"), but these variations remain within acceptable mechanical clearance for standard PCB designs. Verification of specific board layout constraints is required for applications with height-critical placement.

Q: What is the difference between Copper Alloy and Beryllium Copper contact materials?

A: Both materials provide gold-plated contact surfaces suitable for 25mA switching at 24VDC. Beryllium Copper (used in the CTS part) offers enhanced spring properties and contact reliability. Selection between these materials depends on application-specific requirements for contact force, wear resistance, and environmental exposure. No functional incompatibility exists for standard DIP switch applications.

Q: Does the CTS 218-4LPST washable feature affect compatibility?

A: No. The washable feature and epoxy sealed terminals on the CTS part represent additional capabilities that do not compromise compatibility with applications designed for the non-washable Grayhill part. This feature is beneficial for applications requiring post-assembly cleaning processes.

Q: Are there temperature range implications for substitution?

A: The CTS 218-4LPST operates across -55°C to 85°C, compared to the Grayhill part's -40°C to 85°C range. The substitute provides extended low-temperature capability. For applications operating within the original -40°C to 85°C specification, both parts perform identically. For applications requiring operation below -40°C, the CTS substitute is required.

Q: What packaging differences exist between these parts?

A: The Grayhill 97R04RT is supplied in standard packaging (not specified in detail). The CTS 218-4LPST is supplied in Tube packaging. Verify that Tube packaging is compatible with your assembly equipment and inventory management systems.

Q: Are both parts RoHS compliant?

A: Yes. The Grayhill 97R04RT carries RoHS Compliance certification. The CTS 218-4LPST carries ROHS3 Compliance certification. Both meet current RoHS requirements and are suitable for applications with RoHS mandates.

Q: What is the mechanical life difference between these parts?

A: The Grayhill 97R04RT specifies 1,000 mechanical cycles. The CTS 218-4LPST specifies 1,000 electrical cycles. These represent different measurement methodologies. For standard DIP switch applications with typical user actuation rates, both parts provide equivalent operational longevity.