Bourns 3319P-1-502 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The Bourns 3319P-1-502 is a 5 kOhm through-hole trimmer potentiometer with 0.2W power rating, carbon resistive material, and top adjustment capability. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The 3319P series represents an open-frame design suitable for PC pin termination applications requiring compact rectangular form factors.

Substiute Parts

3319P-1-502

Bourns Inc.In Stock: 10363319P-1-502 Datasheet

Current PartRFQ

37PR5KLF

TT Electronics/BIIn Stock: 107937PR5KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3319P-1-502 is based on the following critical parameters that must remain constant or compatible:

• Resistance Value: 5 kOhms (exact match required)
• Mounting Type: Through Hole with PC Pins (form factor compatibility)
• Adjustment Type: Top Adjustment (mechanical interface requirement)
• Number of Turns: 1 (functional equivalence)
• Termination Style: PC Pins (electrical connection compatibility)

The TT Electronics/BI 37PR5KLF qualifies as a substitute because it maintains identical resistance, mounting, adjustment, and termination characteristics. Variations in power rating (0.5W vs. 0.2W), tolerance (±20% vs. ±25%), temperature coefficient (±250ppm/°C vs. ±1000ppm/°C), and resistive material (Cermet vs. Carbon) are acceptable within the substitution framework, as these parameters represent performance enhancements or equivalent performance levels suitable for applications originally designed for the 3319P-1-502.

Parameter Comparison

Engineering Selection Recommendations

The TT Electronics/BI 37PR5KLF is the qualified substitute for the obsolete Bourns 3319P-1-502 based on the following engineering criteria:

Functional Equivalence: Both components maintain identical 5 kOhm resistance, 1-turn top adjustment, through-hole PC pin termination, and rectangular form factor suitable for PCB integration.

Compliance Status: The 37PR5KLF is actively manufactured and maintains RoHS compliance, addressing the obsolescence of the 3319P-1-502. Both components are REACH unaffected and classified under EAR99 export control.

Performance Enhancement: The substitute provides superior electrical characteristics including higher power dissipation capability (0.5W vs. 0.2W), tighter tolerance (±20% vs. ±25%), and improved temperature stability (±250ppm/°C vs. ±1000ppm/°C). These enhancements ensure reliable operation across broader application ranges without compromising original design intent.

Physical Compatibility: Dimensional variation between components is minimal (11.50mm x 8.80mm vs. 11.00mm x 9.00mm), permitting direct PCB layout accommodation without redesign.

Frequently Asked Questions (FAQ)

Q: Can the 37PR5KLF directly replace the 3319P-1-502 in existing designs?

A: Yes. Both components share identical resistance value, adjustment type, mounting configuration, and termination style. The substitute's enhanced power rating and improved temperature coefficient provide equivalent or superior performance for applications originally specified with the 3319P-1-502.

Q: What is the significance of the resistive material difference (Carbon vs. Cermet)?

A: Carbon and Cermet are both established resistive materials for trimmer potentiometers. The Cermet material in the 37PR5KLF contributes to its superior temperature coefficient (±250ppm/°C) and tighter tolerance (±20%), making it suitable for precision adjustment applications.

Q: Are there dimensional concerns when substituting these components?

A: Dimensional differences are minimal. The 37PR5KLF measures 11.50mm x 8.80mm compared to the 3319P-1-502 at 11.00mm x 9.00mm. Standard PCB layout practices accommodate this variation without requiring board redesign.

Q: Why is the 3319P-1-502 classified as obsolete?

A: Obsolescence reflects the manufacturer's discontinuation of this product line. The 37PR5KLF from TT Electronics/BI represents the active equivalent, ensuring continued component availability for production and maintenance applications.

Q: Do both components meet current regulatory requirements?

A: Yes. Both the 3319P-1-502 and 37PR5KLF maintain RoHS compliance and REACH unaffected status, satisfying current environmental and regulatory standards for electronic component manufacturing and distribution.