Equivalent & Substitute Parts for Honeywell 309NPC100K

Part Overview

The Honeywell 309NPC100K is a 100k Ohm 1-Watt cermet linear potentiometer designed for panel mount applications with PC pin termination. This component features a 1-gang configuration with side adjustment and slotted actuator, suitable for audio and instrumentation control circuits. The product is classified as obsolete, necessitating identification of active equivalent components to maintain supply chain continuity and support ongoing production requirements.

Substiute Parts

309NPC100K

Honeywell Sensing and Productivity SolutionsIn Stock: 831309NPC100K Datasheet

Current PartRFQ

51CAD-E28-A20L

Bourns Inc.In Stock: 100851CAD-E28-A20L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 309NPC100K is based on strict equivalence of the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 100k Ohm
• Power rating: 1W
• Taper characteristic: Linear
• Number of gangs: 1
• Resistive material: Cermet
• Termination style: PC Pins
• Mounting configuration: Panel Mount
• Bushing thread specification: 1/4-32
• Actuator type: Slotted
• Actuator diameter: 0.125" (3.18mm)
• Number of turns: 1
• Tolerance: ±10%

The Bourns 51CAD-E28-A20L meets all mandatory matching parameters and qualifies as a direct substitute. Both components share identical electrical specifications, mechanical interfaces, and termination characteristics required for drop-in replacement in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 51CAD-E28-A20L is the qualified substitute for the obsolete Honeywell 309NPC100K based on the following engineering criteria:

Electrical Equivalence: Both components provide identical electrical performance with 100k Ohm resistance, 1W power rating, ±10% tolerance, and linear taper characteristic. The cermet resistive material ensures equivalent frequency response and noise characteristics for audio and instrumentation applications.

Mechanical Compatibility: The components share identical bushing thread specification (1/4-32), actuator type (slotted), and actuator diameter (0.125"), enabling direct mechanical installation in existing panel mount configurations. Minor variations in actuator length (0.750" versus 0.875") and body dimensions represent acceptable mechanical tolerances for standard panel cutout applications.

Compliance Status: The Bourns substitute maintains RoHS3 compliance, exceeding the RoHS compliance of the original component. Both components carry identical ECCN and HTSUS classifications, supporting regulatory and supply chain continuity.

Product Availability: The Bourns 51CAD-E28-A20L is classified as active product with confirmed inventory availability (951 Pcs), ensuring reliable supply for production requirements and future procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 51CAD-E28-A20L be used as a direct replacement for the Honeywell 309NPC100K in existing designs?

A: Yes. The Bourns component meets all mandatory electrical and mechanical specifications. The 5° rotation difference (295° versus 290°) and minor actuator length variation (0.750" versus 0.875") do not affect functional performance in standard panel mount applications. Verify panel cutout dimensions accommodate the rectangular body profile (0.521" x 0.492" versus square 0.500" x 0.500").

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence in resistance value (100k Ohm), power rating (1W), taper (linear), number of gangs (1), resistive material (cermet), termination style (PC pins), mounting type (panel mount), bushing thread (1/4-32), actuator type (slotted), actuator diameter (0.125"), number of turns (1), and tolerance (±10%).

Q: Are there compliance differences between the original and substitute components?

A: Both components are RoHS compliant. The Bourns substitute carries ROHS3 certification, representing an enhanced compliance standard. Both components share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications.

Q: What packaging differences exist between these components?

A: The Honeywell 309NPC100K is supplied in standard packaging, while the Bourns 51CAD-E28-A20L is supplied in tray packaging. This represents a packaging format difference only and does not affect component performance or installation.

Q: Are there temperature coefficient differences?

A: The Honeywell 309NPC100K does not specify a temperature coefficient value. The Bourns 51CAD-E28-A20L specifies ±150ppm/°C. This additional specification in the substitute component provides enhanced temperature stability documentation without affecting functional equivalence.

Q: What is the significance of the "sealed" feature listed for the Bourns component?

A: The sealed feature indicates environmental protection of the resistive element. This represents an enhancement over the original component specification and does not create incompatibility.