Honeywell 34FL2-128 Equivalent & Substitute Parts

Part Overview

The Honeywell 34FL2-128 is a 2k Ohm, 2-gang linear servo mount potentiometer with 0.8W power rating, conductive plastic resistive material, and wire lead termination. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for system maintenance, repair, and redesign applications. The servo mount configuration and continuous rotation capability define its primary application scope.

Substiute Parts

34FL2-128

Honeywell Sensing and Productivity SolutionsIn Stock: 107334FL2-128 Datasheet

Current PartRFQ

3310H-001-202L

Bourns Inc.In Stock: 11113310H-001-202L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 34FL2-128 is determined by the following critical parameters:

Electrical Compatibility:

• Resistance value: 2k Ohm (exact match required)
• Number of gangs: 2 (dual-channel configuration)
• Taper: Linear (functional response curve)
• Resistive material: Conductive plastic (wear and noise characteristics)

Mechanical Compatibility:

• Number of turns: 1 (single rotation cycle)
• Rotation type: Continuous (360-degree operation capability)
• Actuator diameter: 0.125" (3.18mm) (shaft interface dimension)

Power and Environmental:

• Power rating: Substitute must equal or exceed 0.8W
• Temperature coefficient: Substitute must maintain acceptable performance within specified operating range
• RoHS compliance: Required for modern supply chain integration

The Bourns 3310H-001-202L meets the core electrical requirements (2k Ohm, 2-gang, linear, conductive plastic) and shares identical actuator diameter and single-turn configuration. However, functional differences exist in mounting type, termination style, and power rating that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Electrical Equivalence: The Bourns 3310H-001-202L provides electrical equivalence for 2k Ohm, 2-gang linear potentiometer applications. Both components use conductive plastic resistive material and single-turn configuration, ensuring functional compatibility for resistance and channel control.

Power Rating Consideration: The Honeywell 34FL2-128 operates at 0.8W, while the Bourns substitute is rated at 0.25W (1/4W). Applications requiring continuous operation at or near 0.8W dissipation cannot use the Bourns part without thermal derating or circuit modification.

Mechanical Interface Differences: The Honeywell part features servo mount configuration with wire lead termination, while the Bourns part uses panel mount with PC pin termination. Direct mechanical substitution requires adapter design or circuit board redesign.

Rotation Capability: The Honeywell part supports continuous 360-degree rotation, while the Bourns part is limited to 300-degree rotation. Applications requiring full continuous rotation cannot use the Bourns substitute without mechanical modification.

Product Status and Supply: The Honeywell 34FL2-128 is obsolete with 1001 pieces in current inventory. The Bourns 3310H-001-202L is active production with 1014 pieces available, providing long-term supply assurance and compliance with current RoHS3 standards.

Compliance: Both components are RoHS compliant and carry EAR99 ECCN classification. The Bourns part includes REACH Unaffected status, providing additional regulatory clarity for international applications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 3310H-001-202L directly replace the Honeywell 34FL2-128 in existing designs?

A: Direct replacement is not possible without modification. The Bourns part differs in mounting type (panel mount vs. servo mount), termination style (PC pins vs. wire leads), power rating (0.25W vs. 0.8W), and rotation range (300° vs. continuous). Circuit board redesign or mechanical adapter implementation is required.

Q: What is the primary electrical compatibility between these parts?

A: Both components share identical resistance value (2k Ohm), gang configuration (2-gang), taper (linear), and resistive material (conductive plastic). These parameters define electrical equivalence for potentiometer function.

Q: Why is the power rating difference significant?

A: The Honeywell part is rated for 0.8W continuous dissipation, while the Bourns part is rated for 0.25W. Applications operating at or above 0.25W will exceed the Bourns part's thermal capability, resulting in accelerated component degradation or failure.

Q: Does the 300-degree rotation limit of the Bourns part affect compatibility?

A: Yes. The Honeywell part supports continuous 360-degree rotation, while the Bourns part is mechanically limited to 300 degrees. Applications requiring full continuous rotation cannot use the Bourns substitute without mechanical redesign.

Q: Are both components RoHS compliant?

A: Yes. The Honeywell 34FL2-128 is RoHS Compliant, and the Bourns 3310H-001-202L is ROHS3 Compliant. Both meet current environmental and hazardous substance restrictions.

Q: What is the temperature stability difference between these parts?

A: The Honeywell part has a temperature coefficient of ±400ppm/°C, while the Bourns part is ±1000ppm/°C. The Honeywell part provides superior temperature stability across operating ranges.

Q: Can the wire lead termination of the Honeywell part be adapted to PC pins?

A: Wire leads and PC pins require different connection methods. Wire leads are soldered directly to circuit traces or connectors, while PC pins insert into plated through-holes. Conversion requires custom wiring harness or circuit board modification.

Q: What inventory status should influence component selection?

A: The Honeywell 34FL2-128 is obsolete with limited inventory (1001 pieces). The Bourns 3310H-001-202L is active production, ensuring long-term availability. For new designs or long-term production, the active Bourns part provides supply chain continuity.