Honeywell 381N1000 Potentiometer Equivalent & Substitute Parts

Part Overview

The Honeywell 381N1000 is a 1k Ohm 1 Watt linear panel mount potentiometer featuring conductive plastic resistive material with solder lug termination. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing applications and new designs. The 381 series potentiometer is designed for user-defined adjustment applications requiring 1 gang linear taper control with 300° rotation and panel mounting capability.

Substiute Parts

381N1000

Honeywell Sensing and Productivity SolutionsIn Stock: 967381N1000 Datasheet

Current PartRFQ

3852C-282-102AL

Bourns Inc.In Stock: 22313852C-282-102AL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 381N1000 is determined by the following critical parameters that must align with the original specification:

Core Electrical Parameters: Resistance value (1k Ohm), tolerance (±10%), and taper type (Linear) establish the fundamental functional equivalence.

Mechanical Compatibility: Panel mount configuration with 1/4-32 bushing thread, solder lug termination, and slotted actuator type with 0.125" diameter ensure physical interchangeability within the mounting footprint.

Power Handling: The original 1W rating establishes the minimum power dissipation requirement. Substitute parts with equal or greater power ratings (2W or higher) are acceptable for applications within the original 1W specification.

Resistive Material Consideration: While the 381N1000 uses conductive plastic, cermet-based potentiometers with identical electrical and mechanical parameters provide functional substitution with enhanced temperature stability and durability characteristics.

The Bourns 3852C-282-102AL meets all critical substitution criteria while offering active product status and improved specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: The Bourns 3852C-282-102AL is the qualified equivalent for the Honeywell 381N1000 based on the following engineering criteria:

Electrical Equivalence: Both components provide 1k Ohm resistance with ±10% tolerance and linear taper configuration, ensuring identical electrical performance in circuit applications.

Mechanical Interchangeability: Identical bushing thread (1/4-32), termination style (solder lug), actuator configuration (slotted, 0.125" diameter), and panel mount design enable direct physical replacement without mechanical redesign.

Power Rating Enhancement: The 3852C-282-102AL 2W rating exceeds the original 1W specification, providing additional thermal margin and reliability for the same application envelope.

Compliance Status: The Bourns substitute maintains RoHS compliance (ROHS3) and is REACH affected, meeting current regulatory requirements. The Honeywell 381N1000 obsolete status necessitates transition to the active Bourns component for new procurement and long-term supply chain continuity.

Material Upgrade: Cermet resistive material in the substitute provides superior temperature coefficient performance (±150ppm/°C) compared to conductive plastic, enhancing stability across operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 3852C-282-102AL directly replace the Honeywell 381N1000 in existing designs?

A: Yes. Both components share identical resistance (1k Ohm), tolerance (±10%), taper (linear), termination (solder lug), bushing thread (1/4-32), and mounting configuration (panel mount). The mechanical and electrical interfaces are fully compatible.

Q: What is the significance of the 20° rotation difference (300° vs 280°)?

A: The Honeywell 381N1000 provides 300° rotation while the Bourns 3852C-282-102AL provides 280° rotation. This 20° difference is within acceptable tolerance for user-defined adjustment applications and does not prevent substitution. Applications requiring the full 300° rotation should verify the 280° specification against specific control range requirements.

Q: Why is the power rating increased from 1W to 2W in the substitute?

A: The Bourns 3852C-282-102AL 2W rating provides enhanced thermal performance and reliability margin. Applications designed for 1W operation remain fully compatible, as the component can safely dissipate power levels at or below the original specification. The higher rating does not affect electrical performance in 1W applications.

Q: Are there packaging differences between these components?

A: The Honeywell 381N1000 is specified with standard packaging, while the Bourns 3852C-282-102AL is supplied in bulk packaging. Both components use identical solder lug termination and panel mount configuration. Packaging format does not affect electrical or mechanical compatibility.

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

A: Both materials provide linear taper potentiometer functionality with identical electrical characteristics for this application. Cermet material in the Bourns substitute offers improved temperature stability (±150ppm/°C) and extended operational life compared to conductive plastic. For applications within standard operating temperature ranges, both materials perform equivalently.

Q: Is the Bourns 3852C-282-102AL suitable for new designs?

A: Yes. The Bourns component is active product status with current RoHS3 and REACH compliance, making it the appropriate choice for new designs. The Honeywell 381N1000 obsolete status makes the Bourns substitute the recommended selection for ongoing and future applications.

Q: What certifications apply to the substitute part?

A: The Bourns 3852C-282-102AL carries ROHS3 compliance and is REACH affected. Both components share EAR99 ECCN classification. Compliance documentation should be verified against specific application regulatory requirements.