Honeywell 308N100K Potentiometer - Equivalent & Substitute Parts

Part Overview

The Honeywell 308N100K is a 100k Ohm, 1/2W linear panel mount potentiometer with conductive plastic resistive material and solder hook termination. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The 308N series features a 1-gang configuration with 295° rotation and slotted actuator design suitable for user-defined adjustment applications.

Substiute Parts

308N100K

Honeywell Sensing and Productivity SolutionsIn Stock: 686308N100K Datasheet

Current PartRFQ

53CAD-E24-B20L

Bourns Inc.In Stock: 83053CAD-E24-B20L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 308N100K is determined by strict alignment of the following core parameters:

Critical Matching Parameters:

• Resistance value: 100k Ohm
• Power rating: 0.5W, 1/2W minimum
• Taper characteristic: Linear
• Number of gangs: 1
• Resistive material: Conductive Plastic
• Mounting configuration: Panel Mount with 1/4-32 bushing thread
• Actuator specifications: Slotted type, 0.125" diameter, 0.750" length
• Number of turns: 1.0

Allowable Variations:

• Tolerance: ±10% to ±20%
• Rotation angle: 290° to 295°
• Body dimensions: Minor variations within panel mount envelope
• Termination style: Solder Hook or Solder Lug (both suitable for circuit integration)
• Temperature coefficient: Presence or absence does not affect substitution eligibility

The Bourns 53CAD-E24-B20L meets all critical matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 53CAD-E24-B20L is a qualified substitute for the obsolete Honeywell 308N100K based on the following engineering criteria:

Functional Equivalence: Both components share identical resistance value, power rating, taper characteristic, and mechanical mounting specifications. The 5° difference in rotation angle (295° versus 290°) falls within acceptable operational variance for linear potentiometer applications.

Compliance Status: The Bourns substitute maintains RoHS3 compliance, exceeding the RoHS compliance level of the original part. Both components carry EAR99 ECCN classification and identical HTSUS codes, confirming regulatory alignment.

Termination Compatibility: The transition from solder hook to solder lug termination does not compromise electrical performance. Both termination styles provide equivalent circuit integration capability in standard PCB assembly processes.

Product Availability: The Bourns 53CAD-E24-B20L is classified as active product status with confirmed inventory availability (756 pcs), ensuring supply chain continuity for applications currently using the obsolete Honeywell component.

Tolerance Consideration: The Bourns substitute operates at ±20% tolerance compared to the original ±10% specification. Applications requiring tighter tolerance control must evaluate this parameter against functional requirements.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 53CAD-E24-B20L directly replace the Honeywell 308N100K in existing designs?

A: Yes. Both components meet identical specifications for resistance value, power rating, taper, mounting configuration, and actuator geometry. The substitute is mechanically and electrically compatible for direct replacement in panel mount applications.

Q: What is the significance of the tolerance difference (±10% versus ±20%)?

A: The Honeywell 308N100K maintains ±10% tolerance, while the Bourns substitute operates at ±20%. For applications where resistance accuracy is critical, this difference must be evaluated against circuit design margins. In most general-purpose adjustment applications, ±20% tolerance is acceptable.

Q: Does the 5° rotation difference (295° versus 290°) affect functionality?

A: No. The 5° difference represents a minor variation in mechanical rotation range. Both components provide equivalent adjustment capability for linear potentiometer applications. This variance does not impact electrical performance or user adjustment resolution.

Q: Are there packaging differences between these components?

A: The Honeywell 308N100K is supplied without specified packaging, while the Bourns 53CAD-E24-B20L is packaged in trays. Both are suitable for standard assembly processes. Packaging format does not affect component performance or compatibility.

Q: What is the difference between solder hook and solder lug termination?

A: Solder hook termination features a hook-shaped lead for manual insertion into circuit boards, while solder lug termination provides a flat lug for direct soldering. Both termination styles are compatible with standard PCB assembly and provide equivalent electrical connections. Selection depends on assembly process requirements.

Q: Is the Bourns component sealed, and does this affect substitution?

A: The Bourns 53CAD-E24-B20L includes sealed construction, providing enhanced environmental protection compared to the non-sealed Honeywell original. This feature improves reliability and does not compromise compatibility or performance in standard applications.

Q: Are there any compliance or regulatory concerns with this substitution?

A: No. Both components carry identical ECCN (EAR99) and HTSUS (8533.40.8070) classifications. The Bourns substitute maintains ROHS3 compliance, which exceeds the RoHS compliance level of the original part, ensuring regulatory alignment for all markets.