Honeywell 343P100 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Honeywell 343P100 is a 100 Ohm, 0.75W through-hole trimmer potentiometer with cermet resistive material, side adjustment, and PC pin termination. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 343 Series design provides 20-turn adjustment capability in a compact rectangular form factor suitable for precision tuning in electronic circuits.

Substiute Parts

343P100

Honeywell Sensing and Productivity SolutionsIn Stock: 751343P100 Datasheet

Current PartRFQ

3006P-1-101

Bourns Inc.In Stock: 41423006P-1-101 Datasheet

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3006P-1-101LF

Bourns Inc.In Stock: 164403006P-1-101LF Datasheet

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89PR100LF

TT Electronics/BIIn Stock: 827589PR100LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 343P100 are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Resistance value: 100 Ohms
• Power rating: 0.75W
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Adjustment type: Side Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins
• Face dimension: 0.250" x 0.190" (6.35mm x 4.83mm)

Secondary Consideration:

• Number of turns may vary (15 or 20 turns) while maintaining functional compatibility, as turn count affects adjustment resolution but not electrical performance in applications where the full resistance range is utilized.

The substitute parts listed below meet these criteria and are available from active manufacturers, providing viable alternatives to the obsolete 343P100.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliant Applications: The 3006P-1-101LF (Bourns) is the primary substitute, offering RoHS3 compliance with active product status and high inventory availability (16,400 pcs). This part maintains all critical electrical parameters and mechanical compatibility with the 343P100. The 15-turn configuration provides adequate resolution for most tuning applications.

For RoHS Compliant Applications Without RoHS3 Requirement: The 89PR100LF (TT Electronics/BI) provides an alternative with RoHS compliance and active status. This part matches the 20-turn configuration of the original 343P100, maintaining identical adjustment resolution. Note the face dimension is 0.750" x 0.190", which differs from the 343P100 and may require PCB layout verification.

For Legacy System Compatibility: The 3006P-1-101 (Bourns) maintains compatibility with systems not requiring RoHS3 certification. Active product status ensures continued availability for replacement and repair applications.

Frequently Asked Questions (FAQ)

Q: Can the 3006P-1-101LF directly replace the 343P100 in existing designs? A: Yes. The 3006P-1-101LF matches all critical electrical parameters (100 Ohms, 0.75W, ±10% tolerance, ±100ppm/°C) and mechanical specifications (face dimension 0.250" x 0.190", PC pin termination, through-hole mounting). The 15-turn configuration differs from the original 20-turn design but provides functional equivalence for resistance adjustment.

Q: What is the difference between the 3006P-1-101 and 3006P-1-101LF? A: Both parts are electrically and mechanically identical. The primary difference is RoHS compliance status: 3006P-1-101 is RoHS non-compliant, while 3006P-1-101LF is RoHS3 compliant. For new designs and regulated applications, the 3006P-1-101LF is the appropriate selection.

Q: Why does the 89PR100LF have a different face dimension? A: The 89PR100LF has a face dimension of 0.750" x 0.190" compared to the 343P100 and Bourns alternatives at 0.250" x 0.190". This larger width may affect PCB layout and mounting clearances. Verify physical fit before substitution in space-constrained applications.

Q: Does the difference in turn count (15 vs. 20) affect circuit performance? A: Turn count affects adjustment resolution and mechanical feel but not the electrical performance range. Both 15-turn and 20-turn configurations achieve the full 100 Ohm resistance range. Applications requiring fine adjustment resolution may prefer the 20-turn 89PR100LF.

Q: Are all substitute parts available in the same packaging? A: No. The 343P100 is specified with "-" packaging. The 3006P-1-101 and 3006P-1-101LF are supplied in Tube packaging, while the 89PR100LF is supplied in Bulk packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: What is the REACH status of these substitute parts? A: The Bourns 3006P series (3006P-1-101 and 3006P-1-101LF) are REACH Affected. The TT Electronics 89PR100LF is REACH Unaffected. Verify REACH compliance requirements for your application and supply chain.