Grayhill 94HEB08 Rotary DIP Switch Equivalent & Substitute Parts

Part Overview

The Grayhill 94HEB08 is an octal rotary DIP switch designed for through-hole mounting applications requiring 8-position selection capability. This component features a rotary shaft actuator, rated for 100mA at 50VDC, with sealed construction and gold-plated copper alloy contacts. The 94HEB08 is classified as obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for legacy systems utilizing this component.

Substiute Parts

94HEB08

Grayhill Inc.In Stock: 103094HEB08 Datasheet

Current PartRFQ

94HEB08T

Grayhill Inc.In Stock: 114394HEB08T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 94HEB08 rotary DIP switch are identified based on strict electrical and mechanical parameter matching within the Grayhill 94H series. The substitution criteria are:

Mandatory Matching Parameters:

• Circuit configuration: Octal (8 positions)
• Current rating: 100mA
• Voltage rating: 50VDC
• Actuator type: Rotary with shaft
• Mounting type: Through hole
• Termination style: PC pin
• Pitch: 0.100" (2.54mm)
• Height above board: 0.315" (8.00mm)
• Contact material and finish: Copper alloy with gold plating
• Operating temperature range: -40°C to 85°C
• Mechanical life: 10,000 cycles
• Sealed construction: Yes

Parts meeting all these parameters are classified as direct electrical and mechanical equivalents. Packaging variations (tube versus bulk) do not affect functional equivalency.

Parameter Comparison

Engineering Selection Recommendations

The 94HEB08T serves as the direct functional equivalent to the obsolete 94HEB08 rotary DIP switch. All electrical and mechanical parameters are identical, ensuring pin-for-pin and footprint compatibility in PCB designs.

Product Status Consideration: The 94HEB08 is classified as obsolete, while the 94HEB08T maintains active product status. For new designs or ongoing production requiring long-term component availability, the 94HEB08T is the appropriate selection.

Compliance Advantage: The 94HEB08T achieves RoHS3 compliance, whereas the 94HEB08 is RoHS non-compliant. Applications subject to RoHS regulatory requirements must utilize the 94HEB08T.

Packaging Difference: The 94HEB08T is supplied in tube packaging, compared to bulk packaging for the 94HEB08. This packaging variation does not affect component functionality or electrical performance.

Both parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99), with no additional regulatory constraints affecting substitution.

Frequently Asked Questions (FAQ)

Q: Can the 94HEB08T directly replace the 94HEB08 in existing PCB designs?

A: Yes. The 94HEB08T is electrically and mechanically identical to the 94HEB08. Pin configuration, footprint, height above board, pitch, and all electrical ratings match exactly. No PCB redesign is required.

Q: What is the primary reason to transition from 94HEB08 to 94HEB08T?

A: The 94HEB08 is obsolete product status, creating supply chain risk. The 94HEB08T is active product status with confirmed ongoing availability. Additionally, the 94HEB08T achieves RoHS3 compliance, addressing regulatory requirements that may apply to end applications.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts operate at identical current ratings (100mA), voltage ratings (50VDC), temperature ranges (-40°C to 85°C), and mechanical life specifications (10,000 cycles). Contact material, finish, and sealed construction are identical.

Q: Does packaging format affect component selection?

A: Packaging format (tube versus bulk) does not affect electrical or mechanical performance. Selection should be based on procurement and assembly process requirements. The 94HEB08T tube packaging may offer advantages for automated assembly operations.

Q: Are both parts suitable for washable applications?

A: Yes. Both the 94HEB08 and 94HEB08T feature sealed construction and washable design, supporting post-assembly cleaning processes.

Q: What is the pitch specification for these rotary DIP switches?

A: Both parts feature 0.100" (2.54mm) pitch, the standard spacing for DIP switch footprints in through-hole PCB designs.

Q: Can these parts be used in high-temperature applications?

A: Both parts are rated for operating temperatures from -40°C to 85°C. Applications requiring operation outside this range require alternative component selection.