TC86F-1-501 Equivalent & Substitute Parts

Part Overview

The TC86F-1-501 is a 500 Ohm, 0.3W through-hole trimmer potentiometer manufactured by Bourns Inc. as part of the Trimpot® TC86 series. This component features cermet resistive material, top adjustment, and PC pin termination for through-hole mounting applications. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

TC86F-1-501

Bourns Inc.In Stock: 1028TC86F-1-501 Datasheet

Current PartRFQ

3306F-1-501

Bourns Inc.In Stock: 25083306F-1-501 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC86F-1-501 is determined by the following critical parameters:

• Resistance Value: 500 Ohms (exact match required)
• Adjustment Type: Top Adjustment (functional requirement)
• Mounting Type: Through Hole with PC Pins (mechanical compatibility)
• Resistive Material: Cermet (performance characteristic)
• Number of Turns: 1 (operational specification)
• Temperature Coefficient: ±250ppm/°C (thermal stability)

The 3306F-1-501 qualifies as a substitute based on matching resistance, adjustment type, mounting configuration, resistive material, turn count, and temperature coefficient. Differences in power rating (0.2W vs. 0.3W) and tolerance (±25% vs. ±20%) represent acceptable variations within the electrical and mechanical parameter allowances for this product category.

Parameter Comparison

Engineering Selection Recommendations

The 3306F-1-501 is an active product from Bourns Inc. with current manufacturing and inventory availability (2448 pcs in stock), whereas the TC86F-1-501 is obsolete. Both components meet ROHS3 compliance and carry identical MSL ratings. The substitute maintains electrical performance through matching resistance, temperature coefficient, and adjustment characteristics. The 3306F-1-501 operates at a lower power rating (0.2W vs. 0.3W) and slightly wider tolerance (±25% vs. ±20%), which are acceptable variations for applications within the electrical design envelope of the original specification. Physical dimensions differ marginally (0.319" vs. 0.303" width), requiring verification of PCB layout clearance in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the 3306F-1-501 directly replace the TC86F-1-501 in all applications?

A: The 3306F-1-501 matches the critical electrical parameters (500 Ohms, ±250ppm/°C, 1 turn, top adjustment, cermet material) and mechanical configuration (through-hole, PC pins). The lower power rating (0.2W vs. 0.3W) and wider tolerance (±25% vs. ±20%) are acceptable within standard design margins. Physical dimensions differ by 0.016" in width; verify PCB layout compatibility.

Q: What are the key differences between these two parts?

A: The primary differences are power rating (0.3W vs. 0.2W), tolerance specification (±20% vs. ±25%), and face dimensions (0.303" vs. 0.319" width). The TC86F-1-501 is obsolete; the 3306F-1-501 is an active product with current availability.

Q: Are both parts RoHS compliant?

A: Yes, both the TC86F-1-501 and 3306F-1-501 are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level).

Q: Does the slightly larger size of the 3306F-1-501 affect mounting?

A: The 3306F-1-501 is 0.016" wider (8.10mm vs. 7.70mm). Verify that PCB layout and mechanical clearances accommodate this dimension before substitution.

Q: What is the resistance tolerance impact of using the substitute?

A: The TC86F-1-501 specifies ±20% tolerance; the 3306F-1-501 specifies ±25%. For a 500 Ohm component, this represents a tolerance band difference of ±100 Ohms vs. ±125 Ohms. Confirm that circuit design margins accommodate the wider tolerance.