TC86F-1-104 Equivalent & Substitute Parts

Part Overview

The TC86F-1-104 is a 100 kOhms trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® TC86 series. This through-hole component features PC pin termination, cermet resistive material, and top adjustment capability with 0.3W power rating. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

TC86F-1-104

Bourns Inc.In Stock: 1038TC86F-1-104 Datasheet

Current PartRFQ

3306F-1-104

Bourns Inc.In Stock: 28273306F-1-104 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 3306F-1-104 qualifies as a substitute for the TC86F-1-104 based on the following alignment of critical parameters:

• Resistance value: Both rated at 100 kOhms
• Temperature coefficient: Both ±250ppm/°C
• Number of turns: Both single-turn (1 turn)
• Adjustment type: Both top adjustment
• Resistive material: Both cermet
• Mounting type: Both through hole
• Termination style: Both PC pins
• RoHS compliance: Both ROHS3 compliant
• Moisture sensitivity: Both MSL 1 (Unlimited)

The primary difference is power rating: the substitute operates at 0.2W (1/5W) compared to the original 0.3W specification. This represents a reduction in maximum dissipation capacity. Additionally, tolerance differs slightly (±25% vs. ±20%), and physical dimensions show minor variation (0.319" x 0.268" vs. 0.303" x 0.268" face width).

Parameter Comparison

Engineering Selection Recommendations

The 3306F-1-104 is suitable as a substitute where circuit design permits operation at reduced power dissipation (0.2W vs. 0.3W). Both components maintain identical temperature coefficient performance and cermet resistive characteristics, ensuring equivalent frequency response and stability in temperature-sensitive applications.

The substitute part is currently in active production status, providing supply chain continuity for the obsolete TC86F-1-104. Both components carry ROHS3 compliance and unlimited moisture sensitivity rating, meeting equivalent environmental and regulatory requirements.

Physical footprint variation (0.016" additional width on the substitute) must be verified against PCB layout constraints. Tolerance difference (±25% vs. ±20%) should be evaluated in circuits where precision resistor matching is critical.

Frequently Asked Questions (FAQ)

Q: Can the 3306F-1-104 directly replace the TC86F-1-104 in all applications?

A: Direct replacement is possible where circuit power dissipation does not exceed 0.2W at the trimmer potentiometer. If the original design operates the TC86F-1-104 above 0.2W continuous dissipation, the substitute may not be suitable without circuit modification.

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

A: The substitute exhibits wider tolerance. In applications requiring precise resistance values or tight matching between multiple potentiometers, this difference may affect circuit performance. Verify tolerance requirements in your specific application.

Q: Will the slightly larger physical dimensions of the 3306F-1-104 cause PCB compatibility issues?

A: The substitute is 0.016" wider (8.10mm vs. 7.70mm). Confirm available PCB space before substitution. Pin spacing and mounting hole alignment remain compatible.

Q: Are both parts equivalent in terms of environmental compliance?

A: Yes. Both components are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and are REACH unaffected, meeting identical environmental and regulatory standards.

Q: Why is the TC86F-1-104 obsolete while the 3306F-1-104 remains active?

A: The 3306 series represents current Bourns production for this potentiometer category. The TC86 series has been discontinued in favor of the 3306 line, which provides equivalent functionality with active supply availability.