TC86P-1-105 Equivalent & Substitute Parts

Part Overview

The TC86P-1-105 is a 1 MOhm, 0.3W through-hole trimmer potentiometer manufactured by Bourns Inc. as part of the Trimpot® TC86 series. This component features cermet resistive material, PC pin termination, and top adjustment capability with a single turn. The TC86P-1-105 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement.

Substiute Parts

TC86P-1-105

Bourns Inc.In Stock: 844TC86P-1-105 Datasheet

Current PartRFQ

3306P-1-105

Bourns Inc.In Stock: 124823306P-1-105 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 3306P-1-105 qualifies as a functional substitute for the TC86P-1-105 based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Resistance value: 1 MOhms (identical)
• Temperature coefficient: ±250ppm/°C (identical)
• Number of turns: 1 (identical)
• Adjustment type: Top Adjustment (identical)
• Resistive material: Cermet (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pins (identical)
• RoHS compliance: ROHS3 Compliant (identical)
• Moisture sensitivity level: 1 (Unlimited) (identical)

Allowable Variations:

• Power rating: 0.3W (TC86P-1-105) vs. 0.2W/1/5W (3306P-1-105) — the substitute has lower power dissipation capacity
• Tolerance: ±20% (TC86P-1-105) vs. ±25% (3306P-1-105) — the substitute has wider tolerance
• Physical dimensions: 0.303" x 0.268" (7.70mm x 6.80mm) vs. 0.319" x 0.268" (8.10mm x 6.80mm) — minimal dimensional difference

Parameter Comparison

Engineering Selection Recommendations

The 3306P-1-105 is the designated substitute for the obsolete TC86P-1-105. Both components are manufactured by Bourns Inc. and maintain identical compliance certifications (ROHS3 Compliant, REACH Unaffected, EAR99 classification). The 3306P-1-105 carries active product status, ensuring ongoing availability and supply chain continuity.

The substitute maintains all critical electrical parameters: 1 MOhm resistance, ±250ppm/°C temperature coefficient, and single-turn top adjustment with cermet resistive material. Physical footprint compatibility is confirmed through matching PC pin termination and through-hole mounting configuration.

Design considerations for substitution include the reduced power rating (0.2W vs. 0.3W) and wider tolerance specification (±25% vs. ±20%). Applications requiring the full 0.3W power dissipation capacity or tighter tolerance control must evaluate circuit requirements against the substitute's specifications.

Frequently Asked Questions (FAQ)

Q: Can the 3306P-1-105 directly replace the TC86P-1-105 in existing designs?

A: The 3306P-1-105 is electrically and mechanically compatible for applications within its power rating specification of 0.2W. Verify that circuit power dissipation does not exceed 0.2W at maximum resistance adjustment. Physical dimensions differ slightly (0.319" vs. 0.303" width), requiring PCB layout verification for space-constrained applications.

Q: What is the impact of the tolerance difference (±20% vs. ±25%)?

A: The TC86P-1-105 specifies ±20% tolerance, while the 3306P-1-105 specifies ±25%. Applications requiring tighter resistance tolerance control must account for this 5% wider specification window in the substitute part.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the TC86P-1-105 and 3306P-1-105 are ROHS3 Compliant and REACH Unaffected, maintaining identical environmental compliance status.

Q: What is the primary reason for substitution?

A: The TC86P-1-105 is classified as obsolete. The 3306P-1-105 is an active product from the same manufacturer, providing long-term supply availability and design continuity.

Q: Are there packaging differences between these parts?

A: The TC86P-1-105 is listed with standard packaging, while the 3306P-1-105 is supplied in bulk packaging. Both maintain identical component specifications and PC pin termination configuration.