TE Connectivity 3203X102P Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3203X102P is a 1 kOhm surface mount trimmer potentiometer with 0.05W power rating, J lead termination, and top adjustment capability. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The 3203X102P features cermet resistive material construction with 1.0 turn adjustment and is suitable for applications requiring precision resistance trimming in compact surface mount packages.

Substiute Parts

3203X102P

TE Connectivity Passive ProductIn Stock: 56483203X102P Datasheet

Current PartRFQ

ST-32ETA102

Nidec Components CorporationIn Stock: 3549ST-32ETA102 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 3203X102P is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

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

Allowable Variation Parameters:

• Power rating: Substitute parts may exceed the original 0.05W specification, provided the higher power rating does not introduce thermal or dimensional incompatibilities
• Tolerance: Substitute parts may have tighter tolerance specifications
• Temperature coefficient: Substitute parts may have improved temperature stability characteristics

The Nidec Components Corporation ST-32ETA102 satisfies all mandatory matching parameters and provides enhanced electrical performance through higher power rating (0.125W versus 0.05W) and improved temperature coefficient (±100ppm/°C versus ±250ppm/°C).

Parameter Comparison

Engineering Selection Recommendations

The Nidec Components Corporation ST-32ETA102 is the direct functional equivalent for the obsolete TE Connectivity 3203X102P. Selection of the ST-32ETA102 is supported by the following engineering factors:

Product Status: The ST-32ETA102 maintains active manufacturing status, ensuring long-term availability and supply chain continuity compared to the obsolete 3203X102P.

Regulatory Compliance: Both components maintain identical ROHS3 compliance, REACH unaffected status, and moisture sensitivity level (MSL 1), confirming regulatory equivalence for applications subject to environmental and hazardous substance restrictions.

Electrical Performance: The ST-32ETA102 provides enhanced electrical characteristics through higher power dissipation capability (0.125W versus 0.05W) and superior temperature stability (±100ppm/°C versus ±250ppm/°C), while maintaining identical resistance value and tolerance specifications suitable for precision trimming applications.

Physical Compatibility: Identical physical dimensions, mounting type, termination style, and adjustment mechanism ensure direct mechanical and electrical interchangeability without circuit board redesign or assembly process modification.

Frequently Asked Questions (FAQ)

Q: Can the Nidec ST-32ETA102 be used as a direct replacement for the TE Connectivity 3203X102P in existing designs?

A: Yes. The ST-32ETA102 is mechanically and electrically compatible with the 3203X102P. Both components share identical physical dimensions (0.134" x 0.134" square face), J lead termination, surface mount configuration, and 1 kOhm resistance specification. The ST-32ETA102 provides enhanced performance through higher power rating and improved temperature coefficient.

Q: What is the significance of the higher power rating on the ST-32ETA102?

A: The ST-32ETA102 is rated for 0.125W (1/8W) compared to the 3203X102P at 0.05W (1/20W). This higher power rating provides additional thermal margin in applications and does not introduce incompatibility. The substitute part can safely operate in circuits designed for the lower power specification.

Q: Are there packaging differences between these components?

A: Yes. The TE Connectivity 3203X102P is supplied in Cut Tape (CT) packaging, while the Nidec ST-32ETA102 is supplied in Tape & Reel (TR) packaging. Both packaging formats are standard for surface mount components. Tape & Reel packaging is typical for higher-volume production environments.

Q: How do tolerance specifications affect substitution?

A: The ST-32ETA102 provides ±20% tolerance compared to the 3203X102P at ±25%. Tighter tolerance on the substitute part is compatible with applications designed for the original component. Applications requiring the original ±25% tolerance specification will also accept the ±20% tolerance of the substitute.

Q: What is the temperature coefficient difference, and does it affect circuit performance?

A: The ST-32ETA102 has a temperature coefficient of ±100ppm/°C compared to ±250ppm/°C on the 3203X102P. Lower temperature coefficient indicates improved resistance stability across temperature variations. This enhanced stability is beneficial for precision trimming applications and does not introduce incompatibility with circuits designed for the original component.

Q: Are both components compliant with current environmental regulations?

A: Yes. Both the TE Connectivity 3203X102P and Nidec ST-32ETA102 are ROHS3 compliant and REACH unaffected, confirming compliance with current environmental and hazardous substance regulations applicable to electronic components.