CT20P202 Equivalent & Substitute Parts Reference

Part Overview

The CT20P202 is a 2 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination, manufactured by Vishay Beyschlag/Draloric/BC Components. This component features cermet resistive material, 15-turn side adjustment, and rectangular form factor (6.40mm x 5.00mm). The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

CT20P202

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 764CT20P202 Datasheet

Current PartRFQ

CT-20EP202

Nidec Components CorporationIn Stock: 1137CT-20EP202 Datasheet

DirectRFQ

CT-20EX202

Nidec Components CorporationIn Stock: 1103CT-20EX202 Datasheet

DirectRFQ

3006P-1-202

Bourns Inc.In Stock: 31333006P-1-202 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT20P202 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2 kOhms
• 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
• Face dimensions: Rectangular configuration within tolerance

Two categories of substitutes are identified:

Direct Equivalents (CT-20EP202, CT-20EX202): These parts maintain identical electrical specifications and mechanical form factor. Both are manufactured by Nidec Components Corporation under the CT20 series and are currently in active production status.

Manufacturer-Recommended Substitute (3006P-1-202): This Bourns Inc. component matches all critical electrical parameters and mechanical mounting requirements. The power rating is elevated to 0.75W, providing enhanced thermal margin. Face dimensions are nominally equivalent (0.250" x 0.190" vs. 0.252" x 0.197"), remaining within acceptable mechanical tolerance for standard PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliant Applications: CT-20EP202 or CT-20EX202 are the preferred selections. Both parts are manufactured by Nidec Components Corporation, maintain active production status, and achieve ROHS3 compliance. These substitutes provide identical electrical and mechanical specifications to the original CT20P202, ensuring direct functional equivalence without design modification.

For Non-Compliant or Legacy Systems: The 3006P-1-202 (Bourns Trimpot® 3006 series) serves as the manufacturer-recommended alternative. This part maintains all critical electrical parameters and mechanical mounting compatibility. The elevated 0.75W power rating provides additional thermal headroom in applications where the original 0.5W specification was marginal. Face dimensions are nominally equivalent within standard PCB layout tolerances. Note that this substitute does not achieve RoHS3 compliance.

Inventory and Lead Time Considerations: CT-20EX202 offers the highest current stock level (1092 pcs), followed by CT-20EP202 (1047 pcs) and 3006P-1-202 (3100 pcs). All three substitutes are in active production, ensuring long-term availability for ongoing procurement.

Frequently Asked Questions (FAQ)

Q: Can CT-20EP202 and CT-20EX202 be used interchangeably with CT20P202?

A: Yes. Both parts are direct electrical and mechanical equivalents. They maintain identical resistance (2 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (15), and physical dimensions (6.40mm x 5.00mm face). The primary difference is manufacturer designation and active production status.

Q: What is the key difference between the Nidec substitutes and the Bourns 3006P-1-202?

A: The Nidec parts (CT-20EP202, CT-20EX202) are exact electrical and mechanical equivalents to the original CT20P202. The Bourns 3006P-1-202 maintains identical electrical specifications but features a higher power rating (0.75W vs. 0.5W) and slightly smaller face dimensions (6.35mm x 4.83mm vs. 6.40mm x 5.00mm). The dimensional difference is within standard PCB layout tolerance for through-hole components.

Q: Are there RoHS compliance implications when substituting?

A: The original CT20P202 is RoHS non-compliant. CT-20EP202 and CT-20EX202 achieve ROHS3 compliance, making them suitable for applications requiring RoHS certification. The Bourns 3006P-1-202 remains non-compliant. Compliance requirements should be verified against your application specifications.

Q: Will the 3006P-1-202 fit in the same PCB footprint as CT20P202?

A: The face dimensions are nominally equivalent (0.250" x 0.190" vs. 0.252" x 0.197"), representing a difference of approximately 0.002" and 0.007" respectively. This variation is within standard PCB layout tolerance for through-hole trimmer potentiometers. Physical fit should be confirmed against your specific PCB design and component placement constraints.

Q: What is the significance of the 15-turn specification?

A: The 15-turn adjustment range defines the mechanical resolution and adjustment range of the trimmer potentiometer. All listed substitutes maintain this specification, ensuring equivalent adjustment characteristics and control resolution in the application circuit.

Q: Can I use these substitutes in new designs, or are they only for replacement applications?

A: All three substitute parts are suitable for new designs. CT-20EP202 and CT-20EX202 are preferred for new designs requiring RoHS compliance. The 3006P-1-202 is appropriate for applications where RoHS compliance is not required and the enhanced 0.75W power rating provides design margin.