TC86K-1-202 Equivalent & Substitute Parts

Part Overview

The TC86K-1-202 is a 2 kOhms, 0.3W through-hole trimmer potentiometer manufactured by Bourns Inc. as part of the Trimpot® TC86 series. This component features cermet resistive material, side adjustment capability, and PC pin termination for through-hole mounting applications. The TC86K-1-202 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

TC86K-1-202

Bourns Inc.In Stock: 757TC86K-1-202 Datasheet

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3306K-1-202

Bourns Inc.In Stock: 23223306K-1-202 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC86K-1-202 is based on the following critical parameters that must remain consistent or compatible:

• Resistance value: 2 kOhms (exact match required)
• Adjustment type: Side Adjustment (functional requirement)
• Resistive material: Cermet (performance characteristic)
• Mounting type: Through Hole (PCB integration requirement)
• Termination style: PC Pins (electrical connection requirement)
• Temperature coefficient: ±250ppm/°C (thermal stability requirement)
• Number of turns: 1 (adjustment range requirement)

The 3306K-1-202 meets these core substitution criteria. Variations in power rating (0.3W vs. 0.2W), tolerance (±20% vs. ±25%), and physical dimensions are within acceptable engineering parameters for equivalent component selection, provided circuit design margins accommodate the lower power rating and broader tolerance.

Parameter Comparison

Engineering Selection Recommendations

The 3306K-1-202 is the primary equivalent substitute for the obsolete TC86K-1-202. Both components are manufactured by Bourns Inc. and share identical core electrical specifications: 2 kOhms resistance, ±250ppm/°C temperature coefficient, 1-turn side adjustment, cermet resistive material, and through-hole PC pin termination.

The 3306K-1-202 carries Active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and MSL Level 1 rating, meeting environmental and moisture sensitivity requirements.

Design consideration: The 3306K-1-202 operates at 0.2W versus the original 0.3W specification. Circuit designs must confirm that power dissipation requirements do not exceed 0.2W. The tolerance specification widens from ±20% to ±25%; applications requiring tighter tolerance control must evaluate this parameter against circuit performance margins.

Physical dimensions differ slightly; PCB layout verification is required to confirm mechanical fit within the allocated component footprint space.

Frequently Asked Questions (FAQ)

Q: Can the 3306K-1-202 directly replace the TC86K-1-202 without circuit modification?

A: Direct replacement is possible if circuit power dissipation does not exceed 0.2W and tolerance variation of ±25% is acceptable. PCB layout must accommodate the dimensional differences (0.268" x 0.319" vs. 0.303" x 0.268" face dimensions).

Q: What is the primary reason for substitution?

A: The TC86K-1-202 is classified as obsolete. The 3306K-1-202 provides functional equivalence with active product status and assured supply availability.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 rating. No compliance barriers exist for substitution.

Q: How do tolerance differences affect circuit performance?

A: The TC86K-1-202 specifies ±20% tolerance; the 3306K-1-202 specifies ±25%. Applications using these components for precision adjustment or calibration must evaluate whether the broader tolerance range remains within acceptable performance margins.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: Dimensions differ: TC86K-1-202 is 0.303" x 0.268"; 3306K-1-202 is 0.268" x 0.319". PCB layout verification is required to confirm mechanical fit and clearance compatibility.

Q: What is the power dissipation limitation for the substitute part?

A: The 3306K-1-202 is rated for 0.2W maximum power dissipation. Circuit designs must ensure operating power does not exceed this specification.