Honeywell 308N10KZ Equivalent & Substitute Parts

Part Overview

The Honeywell 308N10KZ is a 10k Ohm 1/2W panel mount potentiometer featuring a linear taper, conductive plastic resistive element, and solder hook termination. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing applications and new designs. The 308 series potentiometer is designed for user-defined adjustment applications requiring a 295° rotation angle and 1/4-32 bushing thread configuration.

Substiute Parts

308N10KZ

Honeywell Sensing and Productivity SolutionsIn Stock: 1095308N10KZ Datasheet

Current PartRFQ

82A1A-B28-D15L

Bourns Inc.In Stock: 239682A1A-B28-D15L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 308N10KZ is based on the following critical parameters that must align for functional equivalence:

Primary Matching Criteria:

• Resistance value: 10k Ohm
• Power rating: 0.5W, 1/2W minimum
• Resistive material: Conductive Plastic
• Termination style: Solder Hook
• Mounting type: Panel Mount
• Number of gangs: 1
• Number of turns: 1
• Actuator diameter: 0.250" (6.35mm)

Secondary Considerations:

• Taper characteristic (linear vs. logarithmic)
• Rotation angle
• Bushing thread size
• Body dimensions
• Tolerance specifications
• Regulatory compliance status

The Bourns 82A1A-B28-D15L shares the core electrical specifications (10k Ohm, 1/2W, conductive plastic, solder hook termination, panel mount configuration) and mechanical compatibility (0.250" actuator diameter, slotted actuator type). However, this substitute introduces a logarithmic taper characteristic, which differs from the linear taper of the original part. This difference affects the resistance-to-rotation relationship and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The Honeywell 308N10KZ is classified as obsolete, making the Bourns 82A1A-B28-D15L a viable active alternative for new procurement and design continuity. The Bourns component maintains active product status with current manufacturing support.

Regulatory Compliance: Both components satisfy RoHS requirements. The Honeywell 308N10KZ is RoHS Compliant, while the Bourns 82A1A-B28-D15L meets the more recent ROHS3 standard. The Bourns component is additionally REACH Affected, indicating compliance with European chemical regulations.

Electrical Equivalence: Core electrical parameters align: both components provide 10k Ohm resistance at 0.5W/1/2W power rating with conductive plastic construction and solder hook termination. The tolerance specification differs (±10% vs. ±20%), with the Honeywell component offering tighter tolerance control.

Mechanical Compatibility: Panel mount configuration and 0.250" slotted actuator diameter are identical. However, the Bourns component features a larger body footprint (0.625" x 0.625" vs. 0.500" x 0.500"), different bushing thread size (3/8-32 vs. 1/4-32), and slightly greater rotation angle (300° vs. 295°). These dimensional differences require verification against mechanical mounting constraints and panel cutout specifications.

Taper Characteristic: The primary functional difference is the taper type. The Honeywell 308N10KZ provides linear response, while the Bourns 82A1A-B28-D15L provides logarithmic response. This distinction affects the resistance-to-rotation relationship and must be evaluated against application control characteristics.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 82A1A-B28-D15L directly replace the Honeywell 308N10KZ in existing designs?

A: Direct mechanical and electrical replacement is possible for the core potentiometer function (10k Ohm, 1/2W, conductive plastic, solder hook). However, the logarithmic taper of the Bourns component differs from the linear taper of the Honeywell component. Applications requiring linear response characteristics must evaluate whether logarithmic response is acceptable. Additionally, the larger body dimensions (0.625" x 0.625" vs. 0.500" x 0.500") and different bushing thread (3/8-32 vs. 1/4-32) require panel cutout and mounting verification.

Q: What is the significance of the taper difference between these components?

A: Taper defines the relationship between shaft rotation angle and resistance output. Linear taper provides proportional resistance change across the full rotation range, while logarithmic taper provides non-linear response, typically used for audio and logarithmic control applications. Selection depends on the specific application control requirements.

Q: Are there dimensional compatibility issues with the Bourns substitute?

A: Yes. The Bourns 82A1A-B28-D15L has a larger body footprint (0.625" x 0.625" vs. 0.500" x 0.500") and requires a 3/8-32 bushing thread instead of 1/4-32. Panel cutout dimensions and mounting hardware must be verified for compatibility. The rotation angle difference (300° vs. 295°) is minimal and typically not a limiting factor.

Q: How do tolerance specifications affect component selection?

A: The Honeywell 308N10KZ specifies ±10% tolerance, while the Bourns 82A1A-B28-D15L specifies ±20% tolerance. Applications requiring tighter resistance accuracy should account for this difference. The Honeywell component provides superior tolerance control, while the Bourns component offers broader acceptable variation.

Q: What regulatory compliance differences exist between these components?

A: Both components are RoHS compliant. The Honeywell 308N10KZ meets RoHS requirements, while the Bourns 82A1A-B28-D15L meets the more recent ROHS3 standard. The Bourns component is additionally REACH Affected, indicating compliance with European chemical substance regulations. For applications requiring the latest regulatory standards, the Bourns component provides enhanced compliance status.

Q: Is the Bourns component suitable for applications requiring unlimited moisture sensitivity tolerance?

A: The Honeywell 308N10KZ specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The Bourns 82A1A-B28-D15L lists MSL as Not Applicable, suggesting the component does not require moisture sensitivity classification under standard testing protocols. Applications with specific moisture sensitivity requirements should reference detailed component datasheets for environmental performance specifications.