PDTA143ZQCZ Equivalent & Substitute Parts

Part Overview

The PDTA143ZQCZ is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Nexperia USA Inc. in a 3-XDFN surface mount package with wettable flank. This component integrates internal base and emitter resistors, enabling direct logic-level switching applications without external biasing networks. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Pre-Biased	—
Current - Collector (Ic) (Max)	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Resistor - Base (R1)	4.7	kOhms
Resistor - Emitter Base (R2)	47	kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 10mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	100	mV @ 250µA, 5mA
Current - Collector Cutoff (Max)	100	nA
Frequency - Transition	180	MHz
Power - Max	360	mW
Package / Case	3-XDFN Exposed Pad	—
Mounting Type	Surface Mount, Wettable Flank	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the PDTA143ZQCZ is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Transistor type: PNP - Pre-Biased configuration
Maximum collector current: 100 mA
Collector-emitter breakdown voltage: 50 V
Internal base resistor (R1): 4.7 kOhms
Internal emitter-base resistor (R2): 47 kOhms
DC current gain (hFE): 100 minimum at specified conditions
Saturation voltage: 100 mV maximum at specified conditions
Transition frequency: 180 MHz
Maximum power dissipation: 360 mW

Mechanical Equivalence Criteria:

Package type: 3-XDFN Exposed Pad
Mounting technology: Surface Mount with Wettable Flank
Supplier device package designation: DFN1412D-3

Compliance Equivalence Criteria:

RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)
REACH unaffected status

The substitute part PDTA143ZQC-QZ meets all electrical and mechanical parameters identical to the main part. The primary distinction is product status and automotive qualification.

Parameter Comparison

Parameter	PDTA143ZQCZ (Main)	PDTA143ZQC-QZ (Substitute)	Match
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	✓
Transistor Type	PNP - Pre-Biased	PNP - Pre-Biased	✓
Current - Collector (Ic) (Max)	100 mA	100 mA	✓
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V	✓
Resistor - Base (R1)	4.7 kOhms	4.7 kOhms	✓
Resistor - Emitter Base (R2)	47 kOhms	47 kOhms	✓
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 10mA, 5V	100 @ 10mA, 5V	✓
Vce Saturation (Max) @ Ib, Ic	100 mV @ 250µA, 5mA	100 mV @ 250µA, 5mA	✓
Current - Collector Cutoff (Max)	100 nA	100 nA	✓
Frequency - Transition	180 MHz	180 MHz	✓
Power - Max	360 mW	360 mW	✓
Package / Case	3-XDFN Exposed Pad	3-XDFN Exposed Pad	✓
Mounting Type	Surface Mount, Wettable Flank	Surface Mount, Wettable Flank	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
Product Status	Obsolete	Active	—
Grade	Standard	Automotive	—
Qualification	—	AEC-Q101	—

Engineering Selection Recommendations

PDTA143ZQC-QZ is the direct functional equivalent for PDTA143ZQCZ applications. All electrical parameters, internal resistor values, and mechanical specifications are identical. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The PDTA143ZQC-QZ carries automotive-grade qualification (AEC-Q101), which exceeds the standard-grade classification of the obsolete PDTA143ZQCZ. This qualification provides additional reliability assurance for applications requiring automotive-level component validation. The automotive qualification does not restrict use in non-automotive applications; it indicates enhanced quality and testing protocols.

Both parts maintain identical RoHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard surface mount assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can PDTA143ZQC-QZ be used as a direct replacement for PDTA143ZQCZ?

A: Yes. All electrical parameters, internal resistor values, and mechanical specifications are identical. The parts are pin-compatible and functionally equivalent. The substitute part is in active production, whereas the original is obsolete.

Q: What is the significance of the automotive qualification on PDTA143ZQC-QZ?

A: The AEC-Q101 qualification indicates the part meets automotive industry reliability and testing standards. This qualification does not restrict the part to automotive applications; it certifies enhanced quality assurance. The part is suitable for any application requiring the specified electrical and mechanical characteristics.

Q: Are there any differences in package or mounting between these parts?

A: No. Both parts use the identical 3-XDFN Exposed Pad package with wettable flank surface mount technology. PCB footprints and assembly processes are identical.

Q: What are the internal resistor values, and why are they important?

A: The PDTA143 series incorporates internal base resistor (R1) of 4.7 kOhms and emitter-base resistor (R2) of 47 kOhms. These integrated resistors enable direct logic-level switching without external biasing components. Substitutes must maintain identical resistor values to preserve circuit behavior.

Q: Are both parts RoHS3 compliant?

A: Yes. Both PDTA143ZQCZ and PDTA143ZQC-QZ are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), suitable for standard surface mount assembly and storage.

Q: What is the maximum collector current rating?

A: Both parts are rated for maximum collector current of 100 mA at the specified operating conditions.

Q: What is the transition frequency specification?

A: Both parts have a transition frequency of 180 MHz, determining the maximum switching speed in high-frequency applications.

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