Equivalent & Substitute Parts for Grayhill 94HFB16 Rotary DIP Switch

Part Overview

The Grayhill 94HFB16 is a hexadecimal rotary DIP switch designed for through-hole mounting applications requiring tool actuation. This component features a 16-position rotary mechanism with sealed construction, rated for 100mA at 50VDC operation across an industrial temperature range of -40°C to 85°C.

The 94HFB16 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or field replacement requirements for systems utilizing this component.

Substiute Parts

94HFB16

Grayhill Inc.In Stock: 86394HFB16 Datasheet

Current PartRFQ

94HFB16T

Grayhill Inc.In Stock: 78994HFB16T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 94HFB16 is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: Hexadecimal (16-position)
• Electrical Ratings: 100mA current, 50VDC voltage
• Mechanical Interface: Through-hole mounting, 0.100" pitch, rotary tool actuator
• Environmental Sealing: Sealed construction
• Contact System: Copper alloy with gold finish
• Operating Temperature: -40°C to 85°C range
• Mechanical Durability: 10,000-cycle minimum life

The 94HFB16T qualifies as a direct substitute based on identical electrical, mechanical, and environmental specifications. The primary distinction between these parts is product status and packaging format, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The 94HFB16T serves as the direct functional equivalent to the obsolete 94HFB16. Selection between these parts should be based on the following criteria:

For New Designs or Production Transitions: The 94HFB16T is the appropriate choice. This part maintains active product status with Grayhill Inc., ensuring ongoing availability and supply chain support. The 94HFB16T achieves ROHS3 compliance, meeting current environmental and regulatory requirements for new component procurement.

For Legacy System Support or Field Replacement: The 94HFB16 remains available in current inventory (848 pieces). If existing designs are locked to the original part number or if RoHS non-compliance is not a constraint for the application, the 94HFB16 may be retained. However, long-term availability is limited due to obsolete status.

Compliance Considerations: The 94HFB16T's ROHS3 compliance provides regulatory alignment with modern manufacturing standards. The 94HFB16's RoHS non-compliant status may restrict use in applications subject to environmental regulations or customer compliance requirements.

Packaging Impact: The 94HFB16T is supplied in tube packaging, while the 94HFB16 uses standard packaging. This distinction affects handling, storage, and integration into automated assembly processes but does not impact electrical or mechanical function.

Frequently Asked Questions (FAQ)

Q: Can the 94HFB16T be used as a direct replacement for the 94HFB16 in existing circuit designs?

A: Yes. The 94HFB16T is electrically and mechanically identical to the 94HFB16 across all functional parameters: hexadecimal 16-position configuration, 100mA/50VDC ratings, through-hole mounting with 0.100" pitch, sealed construction, and -40°C to 85°C operating range. No circuit redesign or board layout modification is required.

Q: What is the primary reason for substituting the 94HFB16 with the 94HFB16T?

A: The 94HFB16 is classified as obsolete, creating long-term supply chain risk. The 94HFB16T maintains active product status with Grayhill Inc., ensuring continued availability and support. Additionally, the 94HFB16T achieves ROHS3 compliance, meeting current environmental regulations.

Q: Are there any physical differences between these parts that would affect PCB assembly?

A: No physical differences exist in mounting footprint, pin pitch, or board height. Both parts use through-hole PC pin termination at 0.100" (2.54mm) pitch and mount to identical board positions. The only packaging difference is that the 94HFB16T is supplied in tube format rather than standard packaging, which affects component handling but not installation.

Q: Does the tube packaging of the 94HFB16T affect compatibility with automated assembly equipment?

A: Tube packaging is compatible with standard component feeders used in automated assembly processes. This packaging format does not impact electrical performance or mechanical installation. Verify that your assembly equipment supports tube-fed components if transitioning from standard packaging.

Q: What compliance certifications apply to each part?

A: Both parts carry identical ECCN (EAR99) and HTSUS (8536.50.9065) classifications. The 94HFB16T achieves ROHS3 compliance, while the 94HFB16 is RoHS non-compliant. Both parts are REACH Unaffected and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Is there an inventory advantage to selecting one part over the other?

A: The 94HFB16 has 848 pieces in current stock, while the 94HFB16T has 728 pieces available. However, the 94HFB16's obsolete status means inventory is finite and non-replenishable. The 94HFB16T's active status ensures ongoing supply availability for future requirements.

Q: Can both parts be used interchangeably in the same production batch?

A: Yes, from a functional and mechanical standpoint. However, design documentation and bill of materials should specify a single part number to maintain consistency. If regulatory compliance (RoHS3) is required, the 94HFB16T must be used exclusively.