CT-6ES203 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The CT-6ES203 is a 20 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based side-adjustment component is designed for PC pin termination in applications requiring precision resistance tuning. The part maintains active product status with 689 units currently in stock. Substitute parts are identified to address inventory availability, lead time constraints, or design flexibility requirements while maintaining electrical and mechanical compatibility within specified tolerances.

Substiute Parts

CT-6ES203

Nidec Components CorporationIn Stock: 783CT-6ES203 Datasheet

Current PartRFQ

72XR20KLF

TT Electronics / BI TechnologiesIn Stock: 390072XR20KLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-6ES203 is determined by strict equivalence across the following critical parameters:

• Resistance value: 20 kOhms (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Tolerance: ±10% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Number of turns: 1 (exact match required)
• Adjustment type: Side Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Through Hole (exact match required)
• Termination style: PC Pins (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The 72XR20KLF from TT Electronics / BI Technologies meets all electrical and functional criteria for direct substitution. Physical dimensions vary (square 0.375" x 0.375" versus rectangular 0.323" x 0.276"), which may require PCB layout verification but does not affect electrical performance or core functionality.

Parameter Comparison

Engineering Selection Recommendations

Both the CT-6ES203 and 72XR20KLF are active products with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component deployment. Selection between these parts should be based on:

• PCB layout constraints: The CT-6ES203 occupies a smaller rectangular footprint (8.20mm x 7.00mm), while the 72XR20KLF requires a square footprint (9.53mm x 9.53mm). Verify available board space before substitution.
• Inventory availability: The 72XR20KLF has higher stock levels (3852 units) compared to the CT-6ES203 (689 units), which may influence lead time and procurement strategy.
• Electrical performance: Both parts deliver identical electrical characteristics and are functionally interchangeable from a circuit operation perspective.

Frequently Asked Questions (FAQ)

Q: Can the 72XR20KLF replace the CT-6ES203 in my circuit?

A: Yes. Both parts are electrically equivalent with identical resistance, power rating, tolerance, temperature coefficient, and adjustment characteristics. Substitution is valid from an electrical standpoint. Physical dimensions differ, requiring PCB layout verification.

Q: What is the primary difference between these two parts?

A: The main difference is physical footprint. The CT-6ES203 has a rectangular face (8.20mm x 7.00mm), while the 72XR20KLF has a square face (9.53mm x 9.53mm). All electrical parameters are identical.

Q: Are both parts compliant with current regulations?

A: Yes. Both the CT-6ES203 and 72XR20KLF are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Does the different package size affect performance?

A: No. Package size does not affect electrical performance. Both parts deliver the same resistance value, power handling, tolerance, and temperature stability. Size differences only impact PCB layout and mounting considerations.

Q: Which part should I choose if both are available?

A: Selection depends on PCB layout constraints. If space is limited, the CT-6ES203 rectangular footprint may be preferable. If inventory availability is the priority, the 72XR20KLF offers higher stock levels. Both are functionally equivalent.