TE Connectivity 3142W101PJIT Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3142W101PJIT is a 100 Ohm surface mount trimmer potentiometer with 0.15W power rating, 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 part features cermet resistive material construction with 1.0 turn adjustment and rectangular form factor measuring 4.50mm x 4.00mm.

Substiute Parts

3142W101PJIT

TE Connectivity Passive ProductIn Stock: 8723142W101PJIT Datasheet

Current PartRFQ

TC33X-2-101E

Bourns Inc.In Stock: 2979TC33X-2-101E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 3142W101PJIT is based on matching the following critical electrical and mechanical parameters:

Electrical Parameters:

• Resistance value: 100 Ohms (exact match required)
• Tolerance: ±25% (standard for cermet trimmers)
• Temperature coefficient: ±250ppm/°C (standard performance class)
• Number of turns: 1.0 (single-turn adjustment)

Mechanical Parameters:

• Mounting type: Surface Mount (SMD compatibility)
• Termination style: J Lead (PCB connection method)
• Adjustment type: Top Adjustment (user interface requirement)
• Resistive material: Cermet (performance and reliability class)

Compliance Parameters:

• RoHS compliance status
• Moisture sensitivity level: 1 (unlimited shelf life)

The Bourns TC33X-2-101E meets all critical substitution criteria with the exception of power rating, which is specified at 0.1W versus the original 0.15W. This represents a reduction in power dissipation capability and requires circuit-level verification for applications operating near maximum power limits.

Parameter Comparison

Engineering Selection Recommendations

The Bourns TC33X-2-101E serves as the primary active equivalent for the obsolete TE Connectivity 3142W101PJIT. Selection of this substitute is supported by the following factors:

Compliance and Availability: The TC33X-2-101E maintains active product status with documented inventory availability (2876 pcs), ensuring long-term supply chain continuity. Both components achieve RoHS compliance with the substitute meeting ROHS3 specifications.

Electrical Compatibility: Resistance, tolerance, temperature coefficient, and turn count parameters are identical between the main part and substitute. These parameters define the functional performance in trimmer potentiometer applications.

Mechanical Compatibility: Surface mount J lead termination, top adjustment interface, and cermet resistive material construction are preserved in the substitute. The reduced physical footprint (3.80mm x 3.60mm versus 4.50mm x 4.00mm) provides layout flexibility for space-constrained designs.

Power Rating Consideration: The substitute component specifies 0.1W power dissipation versus the original 0.15W rating. Applications requiring continuous operation at power levels exceeding 0.1W require thermal analysis to confirm the substitute component operates within safe operating limits.

Frequently Asked Questions (FAQ)

Q: Can the Bourns TC33X-2-101E directly replace the TE Connectivity 3142W101PJIT in existing PCB designs?

A: Direct replacement is possible for applications where power dissipation does not exceed 0.1W. The identical J lead termination, resistance value, tolerance, and adjustment interface support pin-for-pin compatibility. The smaller physical footprint (3.80mm x 3.60mm) may require PCB layout verification to confirm adequate clearance around the component.

Q: What is the significance of the power rating difference between 0.15W and 0.1W?

A: Power rating defines the maximum continuous power dissipation the component can safely handle without exceeding temperature limits. The 0.1W rating of the substitute is approximately 67% of the original specification. Applications operating near maximum power levels require calculation of actual power dissipation to confirm the substitute component remains within safe operating conditions.

Q: Are the tolerance and temperature coefficient specifications identical?

A: Yes. Both components specify ±25% tolerance and ±250ppm/°C temperature coefficient. These parameters define the accuracy and thermal stability of the trimmer potentiometer and are identical between the main part and substitute.

Q: Does the smaller physical size of the TC33X-2-101E affect functionality?

A: Physical size does not affect electrical functionality. The smaller footprint (3.80mm x 3.60mm versus 4.50mm x 4.00mm) may provide layout advantages in space-constrained designs. PCB layout verification is necessary to confirm adequate clearance and manufacturing tolerances are maintained.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both designations indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the current regulatory standard. Both components meet hazardous substance restrictions and are suitable for applications requiring RoHS compliance.

Q: Is the Bourns TC33X-2-101E available in the same packaging as the original part?

A: The substitute is available in Cut Tape (CT) and Digi-Reel packaging formats. The original part packaging specification was not provided in the available documentation. Packaging format selection depends on production volume and assembly process requirements.

Q: What is the moisture sensitivity level and why is it important?

A: Both components specify Moisture Sensitivity Level 1, indicating unlimited shelf life without moisture absorption concerns. This classification eliminates the requirement for moisture-controlled storage or baking procedures prior to assembly.