Honeywell 381L100K Potentiometer - Equivalent & Substitute Parts

Part Overview

The Honeywell 381L100K is a 100k Ohm, 1 Watt linear panel mount potentiometer featuring conductive plastic resistive material and solder lug termination. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing procurement and system maintenance. The 381 series potentiometer is designed for user-defined adjustment applications requiring 1 Watt power dissipation capability and 300° rotation range.

Substiute Parts

381L100K

Honeywell Sensing and Productivity SolutionsIn Stock: 828381L100K Datasheet

Current PartRFQ

CLU1041E

OhmiteIn Stock: 1208CLU1041E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 381L100K is determined by the following critical parameters that must remain constant or be exceeded:

Core Electrical Parameters (Must Match or Exceed):

• Resistance value: 100k Ohm
• Tolerance: ±10%
• Power rating: 1W minimum
• Taper characteristic: Linear
• Number of turns: 1

Mechanical Parameters (Must Match):

• Mounting type: Panel Mount
• Termination style: Solder Lug
• Bushing thread: 1/4-32
• Number of gangs: 1
• Adjustment type: User Defined

Compliance Parameters:

• RoHS compliance required
• Moisture Sensitivity Level: 1 (Unlimited)

The Ohmite CLU1041E meets all substitution criteria with equivalent electrical specifications and mechanical compatibility. The CLU1041E provides enhanced power rating (2W versus 1W) and slightly increased rotation range (312° versus 300°), both of which are acceptable improvements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The Ohmite CLU1041E is the qualified substitute for the obsolete Honeywell 381L100K. Selection is based on the following engineering criteria:

Product Status Consideration: The Honeywell 381L100K is classified as obsolete with limited inventory (753 Pcs). The Ohmite CLU1041E maintains active product status with higher inventory availability (1136 Pcs), ensuring long-term procurement viability.

Electrical Compatibility: Both components share identical resistance value (100k Ohm), tolerance (±10%), and linear taper characteristic. The CLU1041E provides 2W power rating compared to the 381L100K's 1W rating, representing a performance enhancement suitable for applications requiring thermal margin or higher dissipation capacity.

Mechanical Compatibility: Panel mount configuration, solder lug termination, 1/4-32 bushing thread, and single-gang design are identical between both components. Physical mounting and circuit integration remain unchanged.

Compliance Status: Both components meet RoHS requirements. The CLU1041E achieves ROHS3 compliance, representing current regulatory alignment. Moisture Sensitivity Level 1 (Unlimited) is maintained, indicating no special handling requirements during storage or assembly.

Resistive Material Difference: The 381L100K utilizes conductive plastic material, while the CLU1041E employs carbon resistive material. This material difference does not affect substitution validity for standard linear potentiometer applications, as both materials achieve the specified electrical characteristics and tolerance.

Frequently Asked Questions (FAQ)

Q: Can the Ohmite CLU1041E directly replace the Honeywell 381L100K in existing designs?

A: Yes. The CLU1041E provides direct mechanical and electrical substitution. Panel mount configuration, bushing thread size (1/4-32), solder lug termination, and electrical specifications (100k Ohm, ±10% tolerance, linear taper) are identical. The component can be installed without circuit modification or mechanical redesign.

Q: What is the significance of the 2W power rating on the CLU1041E versus the 1W rating on the 381L100K?

A: The CLU1041E's 2W rating exceeds the original 1W specification, providing enhanced thermal capacity. This represents a performance improvement that does not compromise compatibility. Applications operating at or below 1W dissipation will function identically; applications requiring higher power dissipation benefit from the increased rating.

Q: Does the 312° rotation on the CLU1041E versus 300° on the 381L100K affect circuit performance?

A: No. The 312° rotation on the CLU1041E exceeds the original 300° specification. Both components provide full-range adjustment capability for linear potentiometer applications. The additional 12° rotation range does not introduce compatibility issues.

Q: Are there packaging differences between these components?

A: The Honeywell 381L100K is supplied in standard packaging (not specified in detail). The Ohmite CLU1041E is supplied in Bulk packaging. Both components feature identical mechanical dimensions for panel mount installation: 1/4-32 bushing thread and solder lug termination. Bulk packaging does not affect component functionality or circuit integration.

Q: What is the difference between conductive plastic and carbon resistive materials?

A: The 381L100K uses conductive plastic material; the CLU1041E uses carbon material. Both materials achieve the specified 100k Ohm resistance and ±10% tolerance. For linear potentiometer applications, both materials provide equivalent electrical performance and are suitable for user-defined adjustment circuits.

Q: Is RoHS compliance maintained with the CLU1041E?

A: Yes. The CLU1041E achieves ROHS3 compliance, which represents current regulatory standards. This exceeds the RoHS compliance of the original 381L100K, ensuring compatibility with current and future procurement requirements.

Q: What inventory considerations apply to this substitution?

A: The Honeywell 381L100K has 753 Pcs available (obsolete status). The Ohmite CLU1041E has 1136 Pcs available (active status). The CLU1041E provides superior long-term availability and procurement reliability due to its active product classification.