Bourns 3299P-1-203 Trimmer Potentiometer: Equivalent & Substitute Parts

Part Overview

The Bourns 3299P-1-203 is a 20 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and side adjustment capability. This sealed Trimpot® 3299 series component is designed for applications requiring precision resistance adjustment in compact rectangular form factors. The part is currently active in production with 877 units in stock. Substitute parts are identified to address supply chain requirements, compliance upgrades, or alternative series availability while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

3299P-1-203

Bourns Inc.In Stock: 9113299P-1-203 Datasheet

Current PartRFQ

3299P-1-203LF

Bourns Inc.In Stock: 14113299P-1-203LF Datasheet

DirectRFQ

PV36P203C01B00

Bourns Inc.In Stock: 2933PV36P203C01B00 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3299P-1-203 are classified based on electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Resistance value: 20 kOhms
• Power rating: 0.5W
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 25
• Resistive material: Cermet

Mechanical Parameters (Must Match):

• Adjustment type: Side Adjustment
• Mounting type: Through Hole
• Termination style: PC Pins
• Manufacturer: Bourns Inc.

Allowed Variation:

• Physical dimensions may vary within the same series or between series, provided mounting and termination compatibility is maintained
• RoHS compliance status may differ between direct manufacturer variants and alternative series parts

Parameter Comparison

Engineering Selection Recommendations

3299P-1-203LF (Direct Manufacturer Variant): This part is electrically and mechanically identical to the 3299P-1-203 with identical physical dimensions. The primary distinction is RoHS3 compliance status. Selection of this variant is appropriate for applications subject to RoHS regulatory requirements or when compliance documentation is mandated. Inventory availability is higher at 1325 units.

PV36P203C01B00 (Alternative Series): This part maintains all critical electrical parameters and mechanical compatibility (through-hole mounting, PC pin termination, side adjustment). The physical dimensions differ: 0.378" x 0.197" face versus 0.240" x 0.375" for the 3299P series. This alternative is suitable for applications where the different form factor accommodates board layout requirements. RoHS3 compliance is provided. Inventory availability is highest at 2886 units.

Selection between these substitutes depends on compliance requirements, physical space constraints, and supply chain priorities. All three parts are active products from Bourns Inc. with equivalent electrical performance.

Frequently Asked Questions (FAQ)

Q: Can 3299P-1-203LF be used as a direct replacement for 3299P-1-203?

A: Yes. The 3299P-1-203LF is electrically and mechanically identical with matching dimensions (0.240" x 0.375" face). The difference is RoHS3 compliance status. No circuit modifications or board layout changes are required.

Q: What is the key difference between 3299P-1-203 and PV36P203C01B00?

A: Both parts have identical electrical specifications (20 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C, 25 turns, cermet, side adjustment, through-hole, PC pins). The PV36P203C01B00 has different physical dimensions: 0.378" x 0.197" face compared to 0.240" x 0.375" for the 3299P series. Board layout compatibility must be verified before substitution.

Q: Are all three parts suitable for the same circuit application?

A: Electrically, yes. All three parts provide identical resistance, power rating, tolerance, temperature coefficient, and adjustment characteristics. Mechanical compatibility depends on PCB layout constraints and available mounting space for the different form factors.

Q: Which substitute offers the best compliance status?

A: Both 3299P-1-203LF and PV36P203C01B00 are ROHS3 compliant. The original 3299P-1-203 is RoHS non-compliant. For applications requiring RoHS compliance documentation, either substitute is appropriate.

Q: What inventory considerations apply to these substitutes?

A: The 3299P-1-203 has 877 units in stock, 3299P-1-203LF has 1325 units, and PV36P203C01B00 has 2886 units. Supply chain decisions may favor the PV36P203C01B00 based on higher availability, provided dimensional compatibility is confirmed.