Equivalent & Substitute Parts for 3059P-1-203

Part Overview

The 3059P-1-203 is a sealed Trimpot® 3059 series trimmer potentiometer manufactured by Bourns Inc., rated at 20 kOhms, 1W with a 22-turn side adjustment mechanism. This component is designed for chassis mount applications using PC pin termination and cermet resistive material. The part is currently active in production with 931 units in stock. Substitute parts are identified when equivalent electrical specifications and functional characteristics are maintained across different manufacturers or product lines, enabling procurement flexibility and supply chain continuity.

Substiute Parts

3059P-1-203

Bourns Inc.In Stock: 10103059P-1-203 Datasheet

Current PartRFQ

78PR20KLF

TT Electronics/BIIn Stock: 123178PR20KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 78PR20KLF from TT Electronics/BI qualifies as a substitute for the 3059P-1-203 based on the following electrical and functional equivalencies:

• Identical resistance value: 20 kOhms
• Identical power rating: 1W
• Identical tolerance: ±10%
• Identical temperature coefficient: ±100ppm/°C
• Identical number of turns: 22
• Identical adjustment type: Side Adjustment
• Identical resistive material: Cermet
• Identical termination style: PC Pins
• Both parts are active products

The primary difference is the mounting type: the 3059P-1-203 uses chassis mount configuration, while the 78PR20KLF uses through-hole mounting. This distinction affects mechanical integration but does not alter electrical performance or functional compatibility in applications where mounting method can be accommodated.

Parameter Comparison

Engineering Selection Recommendations

Both the 3059P-1-203 and 78PR20KLF are active products with identical electrical specifications. The 78PR20KLF offers ROHS3 compliance, which may be required for applications subject to RoHS regulations. The 3059P-1-203 is RoHS non-compliant and REACH-affected. Selection between these parts should be based on:

1. Mounting method requirements: chassis mount versus through-hole integration
2. Regulatory compliance mandates: ROHS3 compliance status
3. Supply availability: the 78PR20KLF currently has higher inventory (1150 units versus 931 units)
4. Packaging requirements: tube versus bulk packaging

Frequently Asked Questions (FAQ)

Q: Can the 78PR20KLF directly replace the 3059P-1-203 in all applications?

A: Electrical substitution is valid. Mechanical integration depends on whether the application can accommodate through-hole mounting instead of chassis mount configuration. PCB layout and mechanical design must be evaluated.

Q: What are the key electrical parameters that make these parts equivalent?

A: The parts share identical resistance (20 kOhms), power rating (1W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (22), adjustment type (side adjustment), resistive material (cermet), and termination style (PC pins).

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance is a regulatory and material composition requirement, not an electrical performance specification. The ROHS3-compliant 78PR20KLF is required only when RoHS compliance is mandated by application or customer specifications.

Q: Are there any differences in adjustment characteristics between these parts?

A: Both parts feature identical 22-turn side adjustment mechanisms with cermet resistive material, ensuring equivalent adjustment resolution and feel.

Q: What is the significance of the different mounting types?

A: The 3059P-1-203 is designed for chassis-mounted applications with external adjustment access. The 78PR20KLF is designed for PCB through-hole mounting. The choice depends on the mechanical design of the target application.