TE Connectivity 3203X504P Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3203X504P is a 500 kOhms surface mount trimmer potentiometer rated at 0.05W (1/20W) with J Lead termination and top adjustment capability. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The 3203X series represents a legacy product line from TE Connectivity's Passive Product division, and equivalent substitutes must maintain functional compatibility across resistance value, power rating, mounting type, and termination style.

Substiute Parts

3203X504P

TE Connectivity Passive ProductIn Stock: 7133203X504P Datasheet

Current PartRFQ

ST-32ETA504

Nidec Components CorporationIn Stock: 23593ST-32ETA504 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 3203X504P is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 500 kOhms
• Mounting type: Surface Mount
• Termination style: J Lead
• Physical size: Square 0.134" x 0.134" (3.40mm x 3.40mm)
• Adjustment type: Top Adjustment
• Resistive material: Cermet
• Number of turns: 1 turn

Allowable Variation Parameters:

• Power rating: Substitute parts may exceed the original 0.05W specification, provided the higher rating does not introduce incompatibility with circuit design constraints
• Tolerance: Substitute parts may have tighter tolerance specifications (lower percentage values)
• Temperature coefficient: Substitute parts may have lower temperature coefficient values, indicating improved thermal stability
• Product status: Active parts are preferred over obsolete classifications for ongoing production

The Nidec Components Corporation ST-32ETA504 meets all mandatory matching parameters and provides enhanced electrical characteristics through higher power rating (0.125W versus 0.05W), tighter tolerance (±20% versus ±25%), and improved temperature coefficient (±100ppm/°C versus ±250ppm/°C).

Parameter Comparison

Engineering Selection Recommendations

The Nidec Components Corporation ST-32ETA504 is a direct functional substitute for the obsolete TE Connectivity 3203X504P. Both components are ROHS3 compliant and carry identical moisture sensitivity ratings (MSL 1, Unlimited). The ST-32ETA504 maintains all critical mechanical and electrical parameters required for direct replacement while offering enhanced performance characteristics.

The primary advantage of the ST-32ETA504 substitution is its active product status, ensuring continued availability and supply chain reliability. The higher power rating (0.125W versus 0.05W) provides additional thermal margin without introducing circuit incompatibility. The improved tolerance specification (±20% versus ±25%) and superior temperature coefficient (±100ppm/°C versus ±250ppm/°C) deliver enhanced performance stability across operating conditions.

Both components share identical physical dimensions, J Lead termination, and surface mount configuration, enabling direct PCB layout compatibility without redesign requirements. The cermet resistive material composition is consistent across both parts, ensuring equivalent frequency response and noise characteristics.

Frequently Asked Questions (FAQ)

Q: Can the Nidec ST-32ETA504 be used as a direct replacement for the TE Connectivity 3203X504P in existing designs?

A: Yes. The ST-32ETA504 maintains identical resistance value (500 kOhms), physical dimensions (0.134" x 0.134"), mounting type (surface mount), termination style (J Lead), and adjustment mechanism (top adjustment). PCB layout and circuit integration require no modification.

Q: What is the significance of the higher power rating on the ST-32ETA504?

A: The ST-32ETA504 is rated at 0.125W compared to the original 0.05W specification. This higher rating provides additional thermal dissipation capability and operational margin. The substitute part remains fully compatible with circuits designed for the lower power rating.

Q: How do tolerance differences affect substitution compatibility?

A: The ST-32ETA504 provides ±20% tolerance versus the original ±25%. Tighter tolerance specifications represent improved manufacturing precision and do not introduce incompatibility. Circuits designed to accept ±25% tolerance will operate within specification with the ±20% substitute part.

Q: What is the impact of the improved temperature coefficient on the ST-32ETA504?

A: The ST-32ETA504 exhibits ±100ppm/°C temperature coefficient compared to ±250ppm/°C on the original part. Lower temperature coefficient values indicate reduced resistance drift across temperature variations, delivering improved circuit stability and performance consistency across operating temperature ranges.

Q: Are there packaging differences between the TE Connectivity 3203X504P and Nidec ST-32ETA504?

A: The ST-32ETA504 is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes. The original TE Connectivity part packaging specification was not provided in the reference data. Both components maintain identical component-level dimensions and termination characteristics.

Q: Do both parts meet current regulatory compliance requirements?

A: Yes. Both the TE Connectivity 3203X504P and Nidec ST-32ETA504 are ROHS3 compliant. The ST-32ETA504 carries REACH Unaffected status, confirming compliance with European chemical substance regulations. Both components are classified under ECCN EAR99 and HTSUS 8533.40.8050.

Q: What is the moisture sensitivity implication for both parts?

A: Both components carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no moisture-related storage or handling restrictions. Standard component storage conditions apply without special desiccant or humidity control requirements.