PDTC143EQCZ Equivalent & Substitute Parts

Part Overview

The PDTC143EQCZ is a pre-biased NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the 3-XDFN package with wettable flank. This component integrates internal base and emitter-base resistors (4.7 kOhms each) to simplify circuit design and reduce component count in switching and amplification applications.

The PDTC143EQCZ carries an obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

PDTC143EQCZ

Nexperia USA Inc.In Stock: 5733PDTC143EQCZ Datasheet

Current PartRFQ

PDTC143EQC-QZ

Nexperia USA Inc.In Stock: 6084PDTC143EQC-QZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PDTC143EQCZ is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Transistor type classification (NPN - Pre-Biased)
• Maximum collector current (100 mA)
• Maximum collector-emitter breakdown voltage (50 V)
• Internal base resistor value (4.7 kOhms)
• Internal emitter-base resistor value (4.7 kOhms)
• DC current gain specification (30 @ 10mA, 5V minimum)
• Transition frequency (230 MHz)
• Maximum power dissipation (360 mW)

Mechanical Parameters:

• Package type (3-XDFN Exposed Pad)
• Mounting technology (Surface Mount, Wettable Flank)
• Lead-free and RoHS3 compliance

Environmental Parameters:

• Moisture sensitivity level (MSL 1)
• REACH compliance status

The substitute part PDTC143EQC-QZ maintains full electrical and mechanical compatibility with the PDTC143EQCZ across all specified parameters, with the addition of automotive-grade qualification (AEC-Q101) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The PDTC143EQC-QZ is the direct substitute for the obsolete PDTC143EQCZ. Both components share identical electrical specifications, internal resistor configurations, and mechanical packaging. The substitute part maintains full pin-for-pin and functional compatibility.

The PDTC143EQC-QZ offers the advantage of active product status, ensuring continued availability and supply chain support. The addition of automotive-grade qualification (AEC-Q101) and Nexperia's automotive certification provides enhanced reliability documentation for applications requiring automotive-level traceability and quality assurance.

Minor variations in saturation voltage (150mV versus 100mV) and collector cutoff current (1µA versus 100nA) remain within acceptable engineering tolerances for pre-biased transistor applications and do not impact functional compatibility in standard switching and amplification circuits.

Frequently Asked Questions (FAQ)

Q: Can the PDTC143EQC-QZ be used as a direct replacement for the PDTC143EQCZ?

A: Yes. The PDTC143EQC-QZ is a direct substitute with identical electrical parameters, internal resistor values, and package specifications. No circuit modifications are required.

Q: What is the difference between the main part and the substitute?

A: The primary differences are product status (obsolete versus active) and automotive qualification. The PDTC143EQC-QZ carries AEC-Q101 automotive certification and is currently in active production. Electrical and mechanical specifications are identical.

Q: Are there any performance differences I should consider?

A: The saturation voltage and collector cutoff current specifications differ slightly but remain within acceptable ranges for pre-biased transistor applications. These minor variations do not affect functional compatibility in standard circuit designs.

Q: Is the package identical between both parts?

A: Yes. Both parts use the 3-XDFN Exposed Pad package with wettable flank for surface mount assembly. Footprint, lead spacing, and mounting requirements are identical.

Q: Does the substitute part have the same internal resistor configuration?

A: Yes. Both the PDTC143EQCZ and PDTC143EQC-QZ feature 4.7 kOhms base resistor (R1) and 4.7 kOhms emitter-base resistor (R2). Internal biasing networks are identical.

Q: What is the advantage of using the automotive-qualified version?

A: The PDTC143EQC-QZ carries AEC-Q101 qualification, providing documented compliance with automotive reliability and quality standards. This qualification is beneficial for applications requiring automotive-level traceability and quality assurance documentation.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the PDTC143EQCZ and PDTC143EQC-QZ are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling.