TC86K-1-104 Equivalent & Substitute Parts

Part Overview

The TC86K-1-104 is a 100 kOhms trimmer potentiometer manufactured by Bourns Inc., designed for through-hole PC pin mounting with side adjustment capability. This component features a 0.3W power rating and cermet resistive material, housed in a rectangular open-frame configuration measuring 0.303" x 0.268" (7.70mm x 6.80mm). The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

TC86K-1-104

Bourns Inc.In Stock: 782TC86K-1-104 Datasheet

Current PartRFQ

3306K-1-104

Bourns Inc.In Stock: 117193306K-1-104 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC86K-1-104 is based on the following critical parameters that must remain consistent:

• Resistance value: 100 kOhms (exact match required)
• Adjustment type: Side Adjustment (functional requirement)
• Mounting type: Through Hole with PC Pins (PCB integration requirement)
• Resistive material: Cermet (performance and stability requirement)
• Number of turns: 1 (adjustment range requirement)
• Temperature coefficient: ±250ppm/°C (thermal stability requirement)

The 3306K-1-104 qualifies as a substitute based on matching all critical parameters. Variations in power rating (0.3W vs. 0.2W), tolerance (±20% vs. ±25%), and physical dimensions are within acceptable engineering substitution criteria for this component category, provided circuit design accommodates the lower power specification.

Parameter Comparison

Engineering Selection Recommendations

The 3306K-1-104 is the designated substitute for the obsolete TC86K-1-104. Both components are manufactured by Bourns Inc. and maintain identical core electrical specifications: 100 kOhms resistance, ±250ppm/°C temperature coefficient, 1-turn side adjustment, cermet construction, and through-hole PC pin termination.

The 3306K-1-104 offers the advantage of active product status, ensuring continued availability and supply chain reliability. Both parts maintain ROHS3 compliance and MSL Level 1 rating, supporting equivalent environmental and moisture handling requirements.

Physical dimensions differ slightly between the two models. The 3306K-1-104 measures 0.268" x 0.319" (6.81mm x 8.10mm) compared to the TC86K-1-104 at 0.303" x 0.268" (7.70mm x 6.80mm). PCB layout verification is required to confirm dimensional compatibility within the available mounting space.

The 3306K-1-104 operates at 0.2W (1/5W) power rating versus the TC86K-1-104 at 0.3W. Circuit design must confirm that the lower power specification does not exceed dissipation limits under maximum operating conditions. Tolerance specification widens from ±20% to ±25%; applications requiring tighter tolerance control must evaluate impact on circuit performance.

Frequently Asked Questions (FAQ)

Q: Can the 3306K-1-104 directly replace the TC86K-1-104 without circuit modification?

A: Direct replacement is possible if circuit design accommodates the 0.2W power rating of the 3306K-1-104 and the ±25% tolerance specification. PCB layout must also accommodate the slightly different physical dimensions. Verification of these parameters against circuit requirements is necessary before implementation.

Q: What is the primary reason for substitution?

A: The TC86K-1-104 is classified as obsolete. The 3306K-1-104 is an active product from the same manufacturer with matching core electrical specifications, providing supply chain continuity.

Q: Are there compliance differences between these parts?

A: Both components maintain identical compliance status: ROHS3 compliant, MSL Level 1, REACH unaffected, and EAR99 ECCN classification. No compliance barriers exist for substitution.

Q: How do tolerance differences affect circuit performance?

A: The TC86K-1-104 specifies ±20% tolerance while the 3306K-1-104 specifies ±25%. Applications requiring precise resistance values must evaluate whether the wider tolerance of the substitute part remains within acceptable circuit operating parameters.

Q: What dimensional considerations apply to PCB integration?

A: The TC86K-1-104 measures 0.303" x 0.268" (7.70mm x 6.80mm) while the 3306K-1-104 measures 0.268" x 0.319" (6.81mm x 8.10mm). Both are rectangular open-frame designs with identical mounting type and termination style. PCB layout must be verified to confirm the substitute part fits within the available mounting footprint.

Q: Are both parts available from the same supplier?

A: Both components are manufactured by Bourns Inc. The 3306K-1-104 is currently in active production with 11,620 units in stock, while the TC86K-1-104 is obsolete with limited remaining inventory of 727 units.