Equivalent & Substitute Parts for 3266P-1-203

Part Overview

The Bourns 3266P-1-203 is a 20 kOhms, 0.25W through-hole trimmer potentiometer with PC pin termination and side adjustment. This sealed Trimpot® 3266 series component is designed for applications requiring precision resistance adjustment in compact form factors. The part is currently active in production. Equivalent substitute parts may be required due to supply availability, lead time considerations, or specific compliance requirements for end applications.

Substiute Parts

3266P-1-203

Bourns Inc.In Stock: 9023266P-1-203 Datasheet

Current PartRFQ

64XR20KLF

TT Electronics/BIIn Stock: 1135264XR20KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The TT Electronics/BI 64XR20KLF qualifies as a direct substitute for the 3266P-1-203 based on the following critical parameters:

• Resistance value: 20 kOhms (identical)
• Power rating: 0.25W, 1/4W (identical)
• Tolerance: ±10% (identical)
• Temperature coefficient: ±100ppm/°C (identical)
• Number of turns: 12 (identical)
• Adjustment type: Side Adjustment (identical)
• Resistive material: Cermet (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pins (identical)

Both components share the same functional electrical specifications and mechanical interface requirements. The 64XR20KLF operates within the same performance envelope as the 3266P-1-203 for standard circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The 64XR20KLF provides functional equivalence to the 3266P-1-203 across all critical electrical and mechanical parameters. Selection between these parts should be based on the following factors:

RoHS Compliance: The 64XR20KLF is RoHS compliant, while the 3266P-1-203 is non-compliant. Applications subject to RoHS directives or customer requirements for lead-free components should specify the 64XR20KLF.

REACH Compliance: The 64XR20KLF is REACH unaffected, whereas the 3266P-1-203 is REACH affected. Applications requiring REACH compliance should use the 64XR20KLF.

Moisture Sensitivity: The 64XR20KLF carries an MSL rating of 1 (unlimited shelf life), while the 3266P-1-203 has no MSL rating specified. The 64XR20KLF is suitable for applications with extended storage or high-humidity environments.

Physical Dimensions: The 64XR20KLF has a slightly reduced height (4.19mm vs. 4.42mm). Verify PCB layout clearance in space-constrained applications before substitution.

Product Status: Both components are active in production with established supply channels.

Frequently Asked Questions (FAQ)

Q: Can the 64XR20KLF be used as a direct replacement for the 3266P-1-203 in existing designs?

A: Yes, the 64XR20KLF is electrically and mechanically equivalent. Both components share identical resistance, power rating, tolerance, temperature coefficient, number of turns, adjustment type, resistive material, mounting type, and termination style. The minor dimensional difference (0.23mm height reduction) is typically not a constraint in standard PCB layouts.

Q: What is the primary reason to substitute the 3266P-1-203 with the 64XR20KLF?

A: The 64XR20KLF offers RoHS compliance and REACH unaffected status, making it suitable for applications with regulatory requirements. The 3266P-1-203 is non-compliant with both standards.

Q: Are there any compatibility concerns with the dimensional difference between these parts?

A: The 64XR20KLF is 0.23mm shorter in height (4.19mm vs. 4.42mm). This difference is negligible for most applications. Verify clearance in designs with tight vertical spacing constraints.

Q: What is the MSL rating difference, and does it matter?

A: The 64XR20KLF has an MSL rating of 1 (unlimited shelf life), while the 3266P-1-203 has no MSL rating. The 64XR20KLF is better suited for applications requiring extended storage or exposure to high-humidity environments.

Q: Are both parts available in the same packaging format?

A: Yes, both the 3266P-1-203 and 64XR20KLF are supplied in tube packaging.