Grayhill 97R10RT DIP Switch - Equivalent & Substitute Parts

Part Overview

The Grayhill 97R10RT is a 10-position surface mount DIP switch with SPST circuit configuration, rated for 25mA at 24VDC. This component is classified as Active product status and is RoHS Compliant with ROHS3 certification available in substitute options. Alternative equivalent parts are necessary when addressing supply chain constraints, specific packaging requirements, operating temperature ranges, or washability specifications that may be required for particular application environments.

Substiute Parts

97R10RT

Grayhill Inc.In Stock: 99997R10RT Datasheet

Current PartRFQ

1-1571983-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 33161-1571983-3 Datasheet

SimilarRFQ

218-10LPST

CTS ElectrocomponentsIn Stock: 2128218-10LPST Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Grayhill 97R10RT is determined by strict equivalence across the following mandatory parameters:

Mandatory Matching Parameters:

• Circuit type: SPST
• Position count: 10
• Current rating: 25mA minimum
• Voltage rating: 24VDC minimum
• Mounting: Surface Mount
• Pitch: 0.050" (1.27mm) Half
• Termination: Gull Wing
• Actuator: Slide (Standard)
• Contact finish: Gold

Allowable Variations:

• Contact material: Copper Alloy or Beryllium Copper (both acceptable)
• Body material: Polyamide (PA), Polyphenylene Sulfide (PPS), or unspecified
• Height above board: Within mechanical envelope constraints
• Operating temperature range: May exceed specified range
• Washability: May be enhanced (Yes vs. No)
• Mechanical/Electrical life: May exceed specified cycles
• RoHS compliance level: ROHS3 acceptable for ROHS Compliant requirement

The identified substitute parts 1-1571983-3 (TE Connectivity) and 218-10LPST (CTS Electrocomponents) meet all mandatory parameters and are therefore direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (97R10RT - Grayhill): Use the original Grayhill 97R10RT when the application requires the lowest profile height (0.061" / 1.55mm) and does not require washability. This part maintains RoHS Compliance status and is suitable for standard surface mount assembly processes.

Secondary Selection (1-1571983-3 - TE Connectivity): Select the TE Connectivity 1-1571983-3 when washability is required for post-assembly cleaning processes or when operating temperature range must remain above -30°C. This substitute provides ROHS3 Compliant certification, enhanced washability with Tape Seal feature, and documented electrical life specification. Height above board is 0.091" (2.30mm), which may require PCB layout verification for clearance-sensitive applications.

Tertiary Selection (218-10LPST - CTS Electrocomponents): Select the CTS Electrocomponents 218-10LPST when the application requires extended low-temperature operation down to -55°C or when Beryllium Copper contact material is specified for enhanced electrical performance. This part includes Epoxy Sealed Terminals and Tape Seal features, providing superior environmental protection. Height above board is 0.104" (2.65mm), requiring clearance verification. ROHS3 Compliant certification is provided.

Compliance Considerations: All three parts maintain REACH Unaffected status and EAR99 ECCN classification. Substitute parts provide ROHS3 Compliant certification, which exceeds the RoHS Compliant requirement of the original part. Moisture Sensitivity Level 1 (Unlimited) is consistent across all options, eliminating MSL-related constraints.

Frequently Asked Questions (FAQ)

Q: Can the 1-1571983-3 be used as a direct replacement for the 97R10RT in existing PCB designs?

A: The 1-1571983-3 is functionally equivalent and maintains identical pitch (0.050" / 1.27mm), termination style (Gull Wing), and mounting type (Surface Mount). However, the height above board increases from 0.061" to 0.091" (1.55mm to 2.30mm). PCB layout must be verified to confirm clearance above the switch does not conflict with overlying components or enclosure constraints.

Q: What is the significance of the washability difference between the 97R10RT and substitute parts?

A: The 97R10RT is not washable, while both substitute parts (1-1571983-3 and 218-10LPST) are washable with Tape Seal features. Washability allows post-assembly cleaning with aqueous or semi-aqueous cleaning solutions without component damage. If the assembly process includes wave soldering or aqueous cleaning steps, the washable substitutes are recommended. If the assembly uses selective soldering or no-clean processes, washability is not a functional requirement.

Q: Are there mechanical life or electrical life differences that affect component selection?

A: The 97R10RT specifies 1,000 mechanical cycles with no electrical life specification. The 1-1571983-3 specifies both 1,000 mechanical cycles and 1,000 electrical cycles. The 218-10LPST specifies 1,000 electrical cycles with no mechanical life specification. For applications requiring documented electrical life performance, the 1-1571983-3 is preferred. For applications with high mechanical actuation cycles, the 97R10RT and 1-1571983-3 are equivalent.

Q: What is the impact of contact material differences (Copper Alloy vs. Beryllium Copper)?

A: Both Copper Alloy (97R10RT and 1-1571983-3) and Beryllium Copper (218-10LPST) are acceptable contact materials for 25mA switching applications at 24VDC. Beryllium Copper provides superior electrical conductivity and contact resistance stability over extended temperature ranges. For standard industrial applications, Copper Alloy is sufficient. For applications requiring enhanced contact reliability or extended temperature operation, Beryllium Copper (218-10LPST) is advantageous.

Q: How do operating temperature ranges affect substitution decisions?

A: The 97R10RT operates from -40°C to 85°C. The 1-1571983-3 operates from -30°C to 85°C, which is narrower at the low end. The 218-10LPST operates from -55°C to 85°C, which extends the low-temperature capability. If the application requires operation below -40°C, only the 218-10LPST is suitable. If operation is limited to -30°C or above, all three parts are acceptable.

Q: What packaging considerations apply to these substitute parts?

A: The 97R10RT packaging is not specified in the provided data. Both substitute parts are supplied in Tube packaging. Tube packaging is standard for surface mount DIP switches and is compatible with automated pick-and-place assembly equipment. Verify that the receiving facility can process Tube packaging format if the original design specified alternative packaging (such as Tape and Reel).

Q: Are all three parts suitable for RoHS-regulated applications?

A: Yes. The 97R10RT is RoHS Compliant. Both substitute parts (1-1571983-3 and 218-10LPST) are ROHS3 Compliant, which exceeds the RoHS Compliant requirement. ROHS3 Compliant certification indicates compliance with the most current RoHS Directive requirements and is fully acceptable for RoHS-regulated applications.

Q: What is the practical difference in height above board between the three parts?

A: The 97R10RT has the lowest profile at 0.061" (1.55mm). The 1-1571983-3 is 0.091" (2.30mm), and the 218-10LPST is 0.104" (2.65mm). In applications with tight vertical clearance constraints (such as low-profile enclosures or densely populated PCBs), the 97R10RT is preferred. For applications without vertical constraints, all three parts are mechanically compatible with standard surface mount assembly processes.