Bourns 3266Y-1-500 Equivalent & Substitute Parts

Part Overview

The Bourns 3266Y-1-500 is a 50 Ohm, 0.25W through-hole trimmer potentiometer with PC pin termination and top adjustment. This sealed Trimpot® 3266 series component is designed for applications requiring precision resistance adjustment in compact rectangular form factors. The part is currently active in production. Equivalent substitute parts may be required due to supply availability, regional sourcing preferences, or specific compliance requirements for end applications.

Substiute Parts

3266Y-1-500

Bourns Inc.In Stock: 10413266Y-1-500 Datasheet

Current PartRFQ

64WR50LF

TT Electronics/BIIn Stock: 129264WR50LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The TT Electronics/BI 64WR50LF qualifies as a direct substitute for the Bourns 3266Y-1-500 based on the following critical parameters:

• Resistance value: 50 Ohms (identical)
• Power rating: 0.25W, 1/4W (identical)
• Tolerance: ±10% (identical)
• Temperature coefficient: ±100ppm/°C (identical)
• Number of turns: 12 (identical)
• Adjustment type: Top Adjustment (identical)
• Resistive material: Cermet (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pins (identical)
• Packaging: Tube (identical)

The 64WR50LF maintains functional and electrical equivalence across all specified parameters. Minor dimensional variation in the face size (0.165" vs 0.170" height) falls within acceptable tolerance for through-hole PCB mounting applications where the component footprint is not space-constrained.

Parameter Comparison

Engineering Selection Recommendations

Both the Bourns 3266Y-1-500 and TT Electronics/BI 64WR50LF are active production components with identical electrical and functional specifications. Selection between these parts should be based on compliance requirements:

The TT Electronics/BI 64WR50LF is RoHS Compliant and REACH Unaffected, making it the preferred choice for applications subject to EU environmental regulations or customer-mandated RoHS requirements.

The Bourns 3266Y-1-500 is RoHS non-compliant and REACH Affected, suitable for applications without RoHS compliance mandates or legacy systems where RoHS exemptions apply.

Both parts share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications for export control and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the TT Electronics/BI 64WR50LF be used as a direct replacement for the Bourns 3266Y-1-500?

A: Yes. Both components have identical electrical specifications (50 Ohms, 0.25W, ±10% tolerance, ±100ppm/°C temperature coefficient, 12-turn cermet construction) and identical mounting characteristics (through-hole PC pins, top adjustment). The minor face dimension difference (0.165" vs 0.170" height) does not affect PCB mounting compatibility.

Q: What is the primary difference between these two parts?

A: The TT Electronics/BI 64WR50LF is RoHS Compliant and REACH Unaffected, while the Bourns 3266Y-1-500 is RoHS non-compliant and REACH Affected. Electrical and functional performance are identical.

Q: Are there any dimensional concerns when substituting these parts?

A: The face dimensions differ slightly in height (6.35mm x 4.32mm vs 6.35mm x 4.19mm). This 0.13mm difference is negligible for standard through-hole PCB layouts and does not affect component seating or electrical performance.

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS or REACH compliance requirements, the TT Electronics/BI 64WR50LF is the appropriate choice. Both parts are active in production and equally available.

Q: Do these parts have different packaging?

A: No. Both parts are supplied in tube packaging, maintaining consistent handling and storage requirements.