CT-20EX503 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The CT-20EX503 is a 50 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based component features side adjustment with 15 turns and PC pin termination, designed for precision tuning applications in electronic circuits. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when inventory constraints, lead time requirements, or design flexibility necessitate alternative sourcing while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

CT-20EX503

Nidec Components CorporationIn Stock: 848CT-20EX503 Datasheet

Current PartRFQ

CT-20EP503

Nidec Components CorporationIn Stock: 1127CT-20EP503 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CT-20EP503 qualifies as a direct substitute for the CT-20EX503 based on strict parameter equivalence across all critical electrical and mechanical specifications. Substitution validity is determined by matching the following parameters:

• Resistance value: 50 kOhms
• Power rating: 0.5W (1/2W)
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Number of turns: 15
• Adjustment type: Side Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins
• Physical dimensions: Rectangular - 0.252" x 0.197" Face (6.40mm x 5.00mm)
• Compliance certifications: ROHS3, REACH Unaffected, EAR99

Both parts belong to the Nidec Components Corporation CT20 series and maintain identical performance characteristics within the specified tolerance and environmental operating ranges.

Parameter Comparison

Engineering Selection Recommendations

Both the CT-20EX503 and CT-20EP503 are Active products from Nidec Components Corporation with full ROHS3 compliance and REACH Unaffected status. Selection between these parts should be based on inventory availability and procurement lead times, as all electrical performance, mechanical compatibility, and regulatory compliance parameters are identical. The CT-20EP503 currently maintains higher inventory levels (1073 pcs vs. 766 pcs), which may provide supply chain advantages for high-volume applications. Both parts are suitable for direct substitution in circuit designs without modification to PCB layouts, mounting hardware, or electrical connections.

Frequently Asked Questions (FAQ)

Q: Can the CT-20EP503 be used as a direct replacement for the CT-20EX503 in existing designs?

A: Yes. The CT-20EP503 is a direct substitute with identical electrical specifications (50 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C), mechanical dimensions (0.252" x 0.197" face), and termination style (PC pins through-hole). No circuit modifications or PCB redesign is required.

Q: Are there any differences in compliance or certifications between these parts?

A: No. Both parts carry identical certifications: ROHS3 Compliant, REACH Unaffected, EAR99 export classification, and MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the primary difference between CT-20EX503 and CT-20EP503?

A: The parts differ only in their base product number designation (CT20EX vs. CT20EP) and current inventory levels. All functional and performance parameters are identical.

Q: Are both parts suitable for high-temperature applications?

A: Both parts maintain a temperature coefficient of ±100ppm/°C. Suitability for specific temperature ranges depends on the application's operating environment and tolerance requirements, which should be evaluated against the circuit design specifications.

Q: Can these trimmer potentiometers be used interchangeably on the same PCB?

A: Yes. Both parts have identical physical dimensions (Rectangular - 0.252" x 0.197" face, 6.40mm x 5.00mm), PC pin termination, and through-hole mounting type, allowing direct PCB footprint compatibility.