Grayhill 97C04S DIP Switch - Equivalent & Substitute Parts

Part Overview

The Grayhill 97C04S is a surface mount DIP switch featuring SPST (Single Pole Single Throw) configuration with 4 positions, rated for 25mA at 24VDC. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity. The 97C04S serves applications requiring compact, washable slide-actuated switching with gold-plated copper alloy contacts and flush-recessed actuation.

Substiute Parts

97C04S

Grayhill Inc.In Stock: 112897C04S Datasheet

Current PartRFQ

97C04ST

Grayhill Inc.In Stock: 141097C04ST Datasheet

DirectRFQ

1571983-4

TE Connectivity ALCOSWITCH SwitchesIn Stock: 13641571983-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 97C04S is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

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

Acceptable Variation Parameters:

• Height above board (within mechanical assembly constraints)
• Body material (polyamide or polyphenylene sulfide)
• Length (minor dimensional tolerance)
• Operating temperature range (provided minimum is -40°C or higher, maximum is 85°C or higher)

The 97C04S has two identified substitutes: the Grayhill 97C04ST (direct manufacturer equivalent, active status) and the TE Connectivity 1571983-4 (cross-manufacturer equivalent, active status). Both maintain identical electrical specifications and mechanical compatibility while differing in packaging, body material, and minor dimensional characteristics.

Parameter Comparison

Engineering Selection Recommendations

Grayhill 97C04ST is the primary substitute for the obsolete 97C04S. Both components are manufactured by Grayhill Inc. and share identical electrical and mechanical specifications. The 97C04ST maintains active product status, ensuring continued availability and supply chain reliability. Dimensional characteristics are identical, including height above board (0.063"), length (0.248"), and body material (polyamide). Both components carry ROHS3 compliance and MSL 1 rating. The 97C04ST is packaged in tube format rather than tape seal, which may require adjustment to assembly processes but does not affect functional compatibility.

TE Connectivity 1571983-4 serves as a secondary cross-manufacturer substitute. This component maintains all critical electrical parameters (SPST, 4 positions, 25mA, 24VDC) and mechanical compatibility (surface mount, gull wing termination, 0.050" pitch). The 1571983-4 differs in three areas: body material (polyphenylene sulfide instead of polyamide), height above board (0.091" versus 0.063"), and operating temperature minimum (-30°C versus -40°C). The TE Connectivity part includes specified electrical life rating (1,000 cycles), whereas the original 97C04S does not. The 1571983-4 is suitable for applications where the reduced height tolerance and higher operating temperature minimum are acceptable.

Both substitutes are ROHS3 compliant, REACH unaffected, and carry MSL 1 ratings, ensuring regulatory and environmental compliance equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: Can the 97C04ST directly replace the 97C04S without PCB redesign?

A: Yes. The 97C04ST maintains identical electrical specifications (SPST, 4 positions, 25mA, 24VDC) and mechanical dimensions (0.063" height, 0.248" length, 0.050" pitch, gull wing termination). The only difference is packaging format (tube versus tape seal), which does not affect PCB footprint or assembly compatibility.

Q: What is the primary difference between the Grayhill 97C04ST and TE Connectivity 1571983-4?

A: The 97C04ST and 1571983-4 differ in three parameters: body material (polyamide versus polyphenylene sulfide), height above board (0.063" versus 0.091"), and operating temperature minimum (-40°C versus -30°C). Electrical specifications are identical. The TE Connectivity part is suitable for applications where the increased height and narrower temperature range are acceptable.

Q: Is the TE Connectivity 1571983-4 suitable for applications requiring -40°C operation?

A: No. The 1571983-4 specifies an operating temperature range of -30°C to 85°C, which does not meet the -40°C minimum of the original 97C04S. For applications requiring -40°C operation, the Grayhill 97C04ST is the appropriate substitute.

Q: Are both substitutes RoHS compliant?

A: Yes. Both the Grayhill 97C04ST and TE Connectivity 1571983-4 are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 97C04S.

Q: Does the increased height of the 1571983-4 (0.091" versus 0.063") affect PCB assembly?

A: The increased height may affect clearance in applications with tight vertical constraints. PCB layout review is necessary to confirm compatibility with surrounding components and enclosure design. The Grayhill 97C04ST maintains the original height specification and is recommended for space-constrained applications.

Q: What is the mechanical life specification for both substitutes?

A: Both the 97C04ST and 1571983-4 specify 1,000 mechanical cycles, matching the original 97C04S. The TE Connectivity part additionally specifies 1,000 electrical cycles.

Q: Can packaging format (tube versus tape seal) affect assembly compatibility?

A: Packaging format affects material handling and automated pick-and-place processes but does not affect PCB footprint or electrical performance. Assembly equipment must be configured for the selected packaging format. The 97C04ST (tube) may require process adjustment if the original design specified tape seal packaging.