Equivalent & Substitute Parts for Bourns 3366P-1-203

Part Overview

The Bourns 3366P-1-203 is a 20 kOhms, 0.5W through-hole trimmer potentiometer with PC pin termination and top adjustment. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The 3366 series has been superseded by the active 3362 series, which maintains electrical and mechanical compatibility while offering improved availability and current manufacturing status.

Substiute Parts

3366P-1-203

Bourns Inc.In Stock: 9303366P-1-203 Datasheet

Current PartRFQ

3362P-1-203

Bourns Inc.In Stock: 41443362P-1-203 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3366P-1-203 can be substituted with the Bourns 3362P-1-203 based on the following matching electrical and mechanical parameters:

• Resistance value: 20 kOhms (identical)
• Power rating: 0.5W, 1/2W (identical)
• Tolerance: ±10% (identical)
• Temperature coefficient: ±100ppm/°C (identical)
• Number of turns: 1 (identical)
• Adjustment type: Top Adjustment (identical)
• Resistive material: Cermet (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pins (identical)

The 3362P series represents the current active equivalent within Bourns' trimmer potentiometer portfolio, with sealed construction and improved environmental protection compared to the obsolete 3366P series.

Parameter Comparison

Engineering Selection Recommendations

The 3362P-1-203 is the direct electrical equivalent for the obsolete 3366P-1-203. Selection of the 3362P-1-203 is based on:

• Identical electrical specifications across all critical parameters (resistance, power rating, tolerance, temperature coefficient, adjustment characteristics)
• Active product status ensuring continued availability and manufacturing support
• Sealed construction in the 3362 series providing enhanced environmental protection
• Minimal dimensional variation (less than 0.5% difference in face dimensions) compatible with standard PCB layouts
• Consistent ECCN and HTSUS classifications between both parts

The slight rectangular versus square face geometry difference does not impact electrical performance or standard through-hole mounting applications.

Frequently Asked Questions (FAQ)

Q: Can the 3362P-1-203 be used as a direct replacement for the 3366P-1-203 in existing designs?

A: Yes. The 3362P-1-203 matches all electrical parameters and mounting specifications. The minor dimensional difference (rectangular versus square face) is within typical PCB layout tolerances for through-hole components.

Q: What is the primary difference between the 3366P and 3362P series?

A: The 3362P series features sealed construction and active manufacturing status, whereas the 3366P is obsolete. Electrical performance and termination style are identical.

Q: Are there any compliance differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications. The 3362P-1-203 is RoHS non-compliant and REACH Affected, consistent with the component category.

Q: What packaging options are available for the substitute part?

A: The 3362P-1-203 is supplied in Tube packaging, whereas the original 3366P-1-203 packaging specification was not provided in the technical data.

Q: Are there inventory considerations for this substitution?

A: The 3362P-1-203 has 4100 units in stock, providing reliable availability compared to the obsolete 3366P-1-203 status.