Bourns 3386H-1-203 Trimmer Potentiometer: Equivalent & Substitute Parts

Part Overview

The Bourns 3386H-1-203 is a 20 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and side adjustment capability. This sealed Trimpot® 3386 series component is designed for precision resistance adjustment in electronic circuits requiring compact form factor and reliable cermet element construction. The part is currently active in production. Substitute parts may be required due to inventory availability, compliance requirements, or specific application constraints such as RoHS certification status or packaging preferences.

Substiute Parts

3386H-1-203

Bourns Inc.In Stock: 10313386H-1-203 Datasheet

Current PartRFQ

3386H-1-203LF

Bourns Inc.In Stock: 15503386H-1-203LF Datasheet

DirectRFQ

72XR20KLF

TT Electronics / BI TechnologiesIn Stock: 390072XR20KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3386H-1-203 is determined by strict equivalence across the following critical parameters: resistance value (20 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (side adjustment), resistive material (cermet), mounting type (through hole), termination style (PC pins), and physical dimensions (0.375" x 0.375" square face).

Two substitute parts meet these electrical and mechanical criteria:

3386H-1-203LF (Bourns Inc.) — Direct manufacturer variant with identical electrical specifications and form factor. Differs in RoHS compliance status (ROHS3 compliant vs. non-compliant) and REACH classification (REACH unaffected vs. affected).

72XR20KLF (TT Electronics / BI Technologies) — Cross-manufacturer equivalent with matching electrical parameters and physical dimensions. Differs in manufacturer, series designation (72 vs. Trimpot® 3386), packaging format (bulk vs. tube), and compliance certifications (ROHS3 compliant, REACH unaffected).

Parameter Comparison

Engineering Selection Recommendations

3386H-1-203LF is the preferred direct substitute when RoHS3 compliance and REACH unaffected status are required. This variant maintains the Bourns Trimpot® 3386 series designation and tube packaging while providing identical electrical performance and mechanical compatibility. Selection of this part eliminates compliance concerns associated with the original 3386H-1-203.

72XR20KLF serves as a cross-manufacturer alternative when bulk packaging is acceptable and maximum inventory availability is prioritized. This TT Electronics / BI Technologies part delivers equivalent electrical specifications and physical form factor with ROHS3 compliance and REACH unaffected status. The 72 series construction provides functional interchangeability for applications where manufacturer source diversification is beneficial.

Both substitutes are active production parts with confirmed inventory availability and matching electrical and mechanical parameters to the original 3386H-1-203.

Frequently Asked Questions (FAQ)

Q: Can 3386H-1-203LF be used as a direct replacement for 3386H-1-203?

A: Yes. Both parts are manufactured by Bourns Inc., belong to the Trimpot® 3386 sealed series, and share identical electrical specifications (20 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C temperature coefficient, 1 turn, side adjustment) and physical dimensions (0.375" x 0.375" square face). The primary difference is compliance certification: 3386H-1-203LF is ROHS3 compliant and REACH unaffected, while 3386H-1-203 is non-compliant and REACH affected.

Q: Is 72XR20KLF electrically equivalent to 3386H-1-203?

A: Yes. The 72XR20KLF manufactured by TT Electronics / BI Technologies matches all critical electrical parameters: 20 kOhms resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1 turn adjustment, cermet resistive element, and side adjustment mechanism. Physical dimensions are identical (0.375" x 0.375" square face). Both parts use PC pin through-hole termination.

Q: What is the difference between tube and bulk packaging?

A: Tube packaging (3386H-1-203 and 3386H-1-203LF) provides individual component protection in cylindrical containers, suitable for controlled inventory management and smaller quantity orders. Bulk packaging (72XR20KLF) supplies components in larger quantities without individual tube containment, typically reducing per-unit cost for high-volume applications.

Q: Are there compliance differences between the substitute parts?

A: Yes. The 3386H-1-203 is RoHS non-compliant and REACH affected. The 3386H-1-203LF and 72XR20KLF are both ROHS3 compliant and REACH unaffected. Applications subject to RoHS or REACH regulations require selection of either 3386H-1-203LF or 72XR20KLF.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes, provided the PCB layout accommodates the 0.375" x 0.375" square through-hole footprint and PC pin spacing. All three parts share identical physical dimensions and termination style, ensuring mechanical and electrical compatibility in existing circuit designs.