Honeywell 343P2K Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Honeywell 343P2K is a 2 kOhm, 0.75W through-hole trimmer potentiometer with cermet resistive material, side adjustment, and PC pin termination. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The 343P2K features a 20-turn adjustment mechanism with ±10% tolerance and ±100ppm/°C temperature coefficient, housed in a rectangular 0.250" x 0.190" package format.

Substiute Parts

343P2K

Honeywell Sensing and Productivity SolutionsIn Stock: 779343P2K Datasheet

Current PartRFQ

3006P-1-202

Bourns Inc.In Stock: 31333006P-1-202 Datasheet

SimilarRFQ

89PR2KLF

TT Electronics/BIIn Stock: 482289PR2KLF Datasheet

SimilarRFQ

M43P202KB40

Vishay SpectrolIn Stock: 1570M43P202KB40 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 343P2K is determined by strict equivalence across the following critical parameters: resistance value (2 kOhms), power rating (0.75W), tolerance (±10%), temperature coefficient (±100ppm/°C), adjustment type (side adjustment), resistive material (cermet), mounting type (through hole), and termination style (PC pins). The number of turns, while functionally related to adjustment resolution, does not preclude substitution when all other parameters align. Face dimensions must remain within the specified rectangular format to ensure mechanical compatibility in existing PCB layouts.

Three active substitute parts meet these criteria:

3006P-1-202 (Bourns Inc.) – Matches all core electrical parameters with 15-turn adjustment and identical face dimensions.

89PR2KLF (TT Electronics/BI) – Matches all core electrical parameters with 20-turn adjustment (identical to main part) and RoHS compliance; face dimension is 0.750" x 0.190", representing a width variation.

M43P202KB40 (Vishay Spectrol) – Matches all core electrical parameters with 18-turn adjustment and face dimensions of 0.252" x 0.189", representing minimal dimensional variance.

Parameter Comparison

Engineering Selection Recommendations

3006P-1-202 (Bourns Inc., Trimpot® 3006 Series) is suitable for applications where RoHS non-compliance is acceptable and face dimensions must match the original 0.250" x 0.190" specification exactly. This part is active and available in high inventory (3100 pcs). The 15-turn adjustment provides finer resolution than the original 20-turn design. RoHS non-compliance status requires evaluation against end-product regulatory requirements.

89PR2KLF (TT Electronics/BI, Series 89) is suitable for applications requiring RoHS compliance and 20-turn adjustment identical to the original part. This part is active with substantial inventory (4726 pcs). The face width of 0.750" x 0.190" represents a significant dimensional increase and requires PCB layout verification for mechanical clearance.

M43P202KB40 (Vishay Spectrol, Series 43) is suitable for applications requiring ROHS3 compliance with minimal dimensional variance (0.252" x 0.189" vs. 0.250" x 0.190"). This part is active with moderate inventory (1463 pcs). The 18-turn adjustment provides intermediate resolution between the 15-turn and 20-turn alternatives.

Selection should prioritize product status (all substitutes are active), compliance certifications aligned with end-product requirements, and mechanical fit within existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the 343P2K be directly replaced with any of these substitute parts?

A: Direct replacement depends on mechanical and regulatory constraints. All three substitutes match the core electrical specifications (2 kOhms, 0.75W, ±10% tolerance, ±100ppm/°C). However, face dimensions vary: the 3006P-1-202 matches exactly (0.250" x 0.190"), while the 89PR2KLF (0.750" x 0.190") and M43P202KB40 (0.252" x 0.189") require PCB layout verification. RoHS compliance status must align with end-product requirements.

Q: What is the significance of the number of turns difference?

A: The 343P2K features 20 turns, while substitutes range from 15 to 20 turns. Turn count affects adjustment resolution and torque characteristics. The 15-turn 3006P-1-202 provides coarser adjustment per revolution, while the 20-turn 89PR2KLF maintains identical resolution. The 18-turn M43P202KB40 provides intermediate resolution. Electrical performance remains equivalent across all options.

Q: Are there packaging differences between these parts?

A: Yes. The 343P2K is specified with "-" packaging (original data incomplete). The 3006P-1-202 is supplied in Tube packaging, while both 89PR2KLF and M43P202KB40 are supplied in Bulk packaging. Packaging affects handling, storage, and procurement logistics but does not impact electrical or mechanical performance.

Q: Which substitute offers the best compliance profile?

A: The M43P202KB40 (Vishay Spectrol) offers ROHS3 compliance, representing the most current RoHS standard. The 89PR2KLF (TT Electronics) offers RoHS compliance. The 3006P-1-202 (Bourns) is RoHS non-compliant. Selection depends on end-product regulatory requirements and target markets.

Q: How do I verify mechanical compatibility?

A: Compare face dimensions against PCB layout constraints. The 3006P-1-202 matches the original 0.250" x 0.190" exactly. The 89PR2KLF width of 0.750" requires verification of horizontal clearance. The M43P202KB40 dimensions (0.252" x 0.189") represent minimal variance and typically accommodate existing layouts designed for the original part.

Q: What inventory levels are available?

A: The 89PR2KLF offers the highest inventory (4726 pcs), followed by the 3006P-1-202 (3100 pcs) and M43P202KB40 (1463 pcs). Inventory levels support production planning and supply chain continuity for all three options.