CT-6EV503 Trimmer Potentiometer: Equivalent & Substitute Parts

Part Overview

The CT-6EV503 is a 50 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based component features top adjustment, PC pin termination, and a square form factor (7.00mm x 7.00mm). The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified when applications require alternative sourcing due to inventory constraints, lead time considerations, or specific form factor requirements while maintaining identical electrical performance and functional specifications.

Substiute Parts

CT-6EV503

Nidec Components CorporationIn Stock: 988CT-6EV503 Datasheet

Current PartRFQ

25PR50KLF

TT Electronics/BIIn Stock: 1166425PR50KLF Datasheet

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3329H-1-503LF

Bourns Inc.In Stock: 64933329H-1-503LF Datasheet

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72PR50KLF

TT Electronics/BIIn Stock: 140172PR50KLF Datasheet

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82PR50KLF

TT Electronics/BIIn Stock: 110082PR50KLF Datasheet

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T73YE503KT20

Vishay SferniceIn Stock: 2396T73YE503KT20 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-6EV503 is determined by strict equivalence across the following critical parameters: resistance value (50 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (top adjustment), resistive material (cermet), mounting type (through hole), and termination style (PC pins). All identified substitute parts match these core electrical and functional specifications. Form factor variations (square, round, or rectangular) and packaging differences (bulk versus tube) do not affect electrical interchangeability but may impact physical board layout and procurement logistics. Compliance certifications (RoHS3, REACH status, ECCN, HTSUS codes) are provided for regulatory verification and do not alter functional substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain electrical and functional equivalence to the CT-6EV503 across the specified parameter set. Selection among these alternatives is based on availability, packaging requirements, and physical form factor constraints:

The 25PR50KLF (TT Electronics/BI) provides a compact square form factor (6.86mm) in tube packaging with standard RoHS compliance. The 3329H-1-503LF (Bourns Trimpot® 3329 Sealed series) offers a round configuration (6.35mm diameter) with ROHS3 compliance and REACH-affected status. The 72PR50KLF (TT Electronics/BI) supplies a larger square footprint (9.53mm) in bulk packaging with ROHS3 compliance. The 82PR50KLF (TT Electronics/BI) delivers a round form factor (6.35mm) in bulk packaging with ROHS3 compliance. The T73YE503KT20 (Vishay Sfernice) provides a rectangular profile (7.00mm x 6.60mm) in tube packaging with ROHS3 compliance and unlimited moisture sensitivity rating matching the primary part.

All parts carry identical HTSUS and ECCN classifications (8533.40.8050 and EAR99 respectively), confirming regulatory equivalence for import/export purposes.

Frequently Asked Questions (FAQ)

Q: Can the CT-6EV503 be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts are electrically equivalent, sharing identical resistance (50 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), and functional characteristics (1-turn top-adjustment cermet trimmer with PC pin termination). Direct substitution is valid from an electrical standpoint.

Q: What are the physical differences between substitute options?

A: Form factors vary: the CT-6EV503 and 25PR50KLF use square configurations; the 3329H-1-503LF and 82PR50KLF employ round designs; the T73YE503KT20 features a rectangular profile. Dimensions range from 6.35mm (round) to 9.53mm (square). These differences affect PCB layout and mounting hole spacing but do not impact electrical performance.

Q: Does packaging type (bulk versus tube) affect electrical performance?

A: No. Packaging type (bulk or tube) is a logistics and handling consideration only. It does not affect component electrical specifications or functional performance. Selection should be based on procurement quantity requirements and inventory management practices.

Q: Are all substitutes RoHS3 compliant?

A: The CT-6EV503, 3329H-1-503LF, 72PR50KLF, 82PR50KLF, and T73YE503KT20 are ROHS3 compliant. The 25PR50KLF carries standard RoHS compliance. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: What is the significance of REACH status differences?

A: The 3329H-1-503LF is REACH-affected; all other parts are REACH-unaffected. REACH status indicates regulatory substance tracking requirements. Confirm REACH compliance obligations based on your end-market and supply chain requirements.

Q: Can form factor differences impact circuit board design?

A: Yes. Variations in size and shape (square, round, rectangular) require corresponding adjustments to PCB footprint design, mounting hole positioning, and component spacing. Verify mechanical compatibility with your specific board layout before implementation.