Bourns 3299Z-1-104 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The Bourns 3299Z-1-104 is a 100 kOhms, 0.5W through-hole trimmer potentiometer with PC pin termination and side adjustment. This sealed Trimpot® 3299 series component is actively manufactured and widely used in precision circuit tuning applications. Substitute parts may be required due to inventory availability, lead time constraints, or specific compliance requirements for end applications.

Substiute Parts

3299Z-1-104

Bourns Inc.In Stock: 22763299Z-1-104 Datasheet

Current PartRFQ

3296Z-1-104

Bourns Inc.In Stock: 10163296Z-1-104 Datasheet

DirectRFQ

3299Z-1-104LF

Bourns Inc.In Stock: 10393299Z-1-104LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3299Z-1-104 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 100 kOhms
• Power rating: 0.5W (1/2W)
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 25
• Adjustment type: Side Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins

Allowed Variations:

• Physical dimensions (face size)
• Series designation (3299 vs. 3296)
• RoHS compliance status
• Inventory availability

The 3299Z-1-104 has two qualified substitutes: the 3299Z-1-104LF (same series, RoHS3 compliant variant) and the 3296Z-1-104 (alternate Trimpot® series with identical electrical specifications but different physical dimensions).

Parameter Comparison

Engineering Selection Recommendations

3299Z-1-104LF: This variant is electrically and mechanically identical to the 3299Z-1-104 and is the preferred substitute when RoHS3 compliance is required. Both parts share the same series designation, face dimensions, and all electrical specifications. The 3299Z-1-104LF is actively manufactured and maintains full compatibility with applications designed for the original part.

3296Z-1-104: This part qualifies as a substitute based on matching all critical electrical parameters and maintaining identical adjustment type, resistive material, and termination style. The primary difference is the reduced face height (0.190" versus 0.240"), which may affect mechanical fit in space-constrained PCB layouts. The 3296Z-1-104 is suitable for applications where the smaller profile is acceptable or advantageous.

Selection between substitutes depends on compliance requirements and physical space constraints. Both maintain active product status and are manufactured by Bourns Inc.

Frequently Asked Questions (FAQ)

Q: Can the 3299Z-1-104LF be used as a direct replacement for the 3299Z-1-104?

A: Yes. The 3299Z-1-104LF is electrically and mechanically identical to the 3299Z-1-104, with the addition of RoHS3 compliance. Both parts have the same resistance, power rating, tolerance, temperature coefficient, number of turns, adjustment type, resistive material, mounting type, termination style, and face dimensions. The LF variant is suitable for applications requiring RoHS compliance.

Q: What is the key difference between the 3299Z-1-104 and the 3296Z-1-104?

A: Both parts have identical electrical specifications (100 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C temperature coefficient, 25 turns, side adjustment, cermet material, through-hole mounting, PC pins). The primary difference is the face dimension: the 3299Z-1-104 measures 0.395" x 0.240", while the 3296Z-1-104 measures 0.395" x 0.190". The 3296Z-1-104 has a reduced height profile.

Q: Can the 3296Z-1-104 be used in a design originally specified for the 3299Z-1-104?

A: The 3296Z-1-104 is electrically compatible and functionally equivalent. However, the smaller face height (0.190" versus 0.240") must be verified against PCB layout constraints and mechanical mounting requirements before substitution.

Q: Are all three parts actively manufactured?

A: Yes. The 3299Z-1-104, 3299Z-1-104LF, and 3296Z-1-104 are all active products manufactured by Bourns Inc.

Q: What compliance differences exist between these parts?

A: The 3299Z-1-104 and 3296Z-1-104 are RoHS non-compliant. The 3299Z-1-104LF is RoHS3 compliant. All three parts are REACH Affected. Compliance requirements should be verified against end-application regulations.