Bourns 3366X-1-502 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The Bourns 3366X-1-502 is a 5 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination and top adjustment. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The 3366X series represents an earlier generation of Bourns trimmer potentiometers, and active alternatives are available within the Bourns product portfolio.

Substiute Parts

3366X-1-502

Bourns Inc.In Stock: 14313366X-1-502 Datasheet

Current PartRFQ

3362R-1-502

Bourns Inc.In Stock: 8163362R-1-502 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3366X-1-502 is determined by matching the following critical parameters:

• Resistance value: 5 kOhms
• Power rating: 0.5W
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 1 turn
• Adjustment type: Top adjustment
• Resistive material: Cermet
• Mounting type: Through hole
• Termination style: PC pins

The Bourns 3362R-1-502 satisfies all these parameters and is the manufacturer-recommended direct substitute. Both parts share identical electrical specifications and functional characteristics. The primary differences are product status (3366X is obsolete; 3362R is active) and minor dimensional variations in the face geometry (rectangular vs. square profile).

Parameter Comparison

Engineering Selection Recommendations

The 3362R-1-502 is the appropriate substitute for the obsolete 3366X-1-502 based on the following factors:

• All electrical parameters match exactly: resistance, power rating, tolerance, and temperature coefficient are identical.
• Functional characteristics are equivalent: both are single-turn, top-adjustment cermet trimmer potentiometers with PC pin termination.
• The 3362R-1-502 is an active product with current manufacturing support, ensuring long-term availability and supply chain continuity.
• The 3362R series incorporates sealed construction, providing enhanced environmental protection compared to the earlier 3366X generation.
• Dimensional differences are minimal and do not affect electrical performance or standard PCB layout compatibility for through-hole mounting.
• The substitute part is RoHS non-compliant and REACH-affected; compliance requirements must be evaluated against application and regional regulations.

Frequently Asked Questions (FAQ)

Q: Can the 3362R-1-502 be used as a direct replacement for the 3366X-1-502 in existing designs?

A: Yes. Both parts have identical electrical specifications (5 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C temperature coefficient) and functional characteristics (1-turn, top-adjustment, cermet, through-hole, PC pins). Minor dimensional differences in face geometry do not affect electrical performance or standard PCB mounting.

Q: What is the primary reason for substitution?

A: The 3366X-1-502 is classified as obsolete. The 3362R-1-502 is the active equivalent from Bourns, ensuring continued availability and manufacturing support.

Q: Are there any compliance differences between the two parts?

A: The 3362R-1-502 is RoHS non-compliant and REACH-affected. Compliance status for the 3366X-1-502 is not specified in available documentation. Applications subject to RoHS or REACH regulations must evaluate these designations against specific requirements.

Q: What are the dimensional differences?

A: The 3366X-1-502 has a square face of 0.276" x 0.276" (7.00mm x 7.00mm). The 3362R-1-502 has a rectangular face of 0.275" x 0.260" (6.99mm x 6.60mm). These differences are negligible for standard through-hole PCB layouts.

Q: Are the packaging formats different?

A: The 3366X-1-502 packaging format is not specified. The 3362R-1-502 is supplied in tube packaging. Confirm packaging requirements with your procurement process.

Q: Can other Bourns trimmer potentiometers substitute for these parts?

A: Substitution is limited to parts matching all critical parameters: 5 kOhms resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1-turn adjustment, top adjustment type, cermet material, through-hole mounting, and PC pin termination. Only the 3362R-1-502 meets all these criteria as a direct substitute.