PDTC143ZQCZ Equivalent & Substitute Parts

Part Overview

The PDTC143ZQCZ is a pre-biased NPN 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-base resistors, enabling direct logic-level switching applications without external biasing networks. The device is rated for 50 V collector-emitter breakdown voltage and 100 mA maximum collector current with 360 mW power dissipation capability.

The PDTC143ZQCZ carries an obsolete product status. Identification of equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN - 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	100mV @ 250µA, 5mA	—
Current - Collector Cutoff (Max)	100	nA
Frequency - Transition	230	MHz
Power - Max	360	mW
Mounting Type	Surface Mount, Wettable Flank	—
Package / Case	3-XDFN Exposed Pad	—
Supplier Device Package	DFN1412D-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
REACH Status	REACH Unaffected	—

Substitute Part Grouping Explanation

Substitution of the PDTC143ZQCZ is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitution:

Electrical Parameters (Must Match Exactly):

Transistor type: NPN - Pre-Biased
Maximum collector current: 100 mA
Collector-emitter breakdown voltage: 50 V
Base resistor (R1): 4.7 kOhms
Emitter-base resistor (R2): 47 kOhms
DC current gain (hFE): 100 @ 10mA, 5V
Saturation voltage (Vce): 100mV @ 250µA, 5mA
Collector cutoff current: 100 nA
Transition frequency: 230 MHz
Maximum power dissipation: 360 mW

Mechanical Parameters (Must Match Exactly):

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

Compliance Parameters:

RoHS3 Compliant
REACH Unaffected
Moisture Sensitivity Level: 1 (Unlimited)

Parameter Comparison

Parameter	PDTC143ZQCZ (Main Part)	PDTC143ZQC-QZ (Substitute)	Match
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Yes
Transistor Type	NPN - Pre-Biased	NPN - Pre-Biased	Yes
Current - Collector (Ic) (Max)	100 mA	100 mA	Yes
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V	Yes
Resistor - Base (R1)	4.7 kOhms	4.7 kOhms	Yes
Resistor - Emitter Base (R2)	47 kOhms	47 kOhms	Yes
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 10mA, 5V	100 @ 10mA, 5V	Yes
Vce Saturation (Max) @ Ib, Ic	100mV @ 250µA, 5mA	100mV @ 250µA, 5mA	Yes
Current - Collector Cutoff (Max)	100 nA	100 nA	Yes
Frequency - Transition	230 MHz	230 MHz	Yes
Power - Max	360 mW	360 mW	Yes
Mounting Type	Surface Mount, Wettable Flank	Surface Mount, Wettable Flank	Yes
Package / Case	3-XDFN Exposed Pad	3-XDFN Exposed Pad	Yes
Supplier Device Package	DFN1412D-3	DFN1412D-3	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Yes
REACH Status	REACH Unaffected	REACH Unaffected	Yes
Product Status	Obsolete	Active	Different
Qualification	—	AEC-Q101	Substitute Enhanced

Engineering Selection Recommendations

The PDTC143ZQC-QZ is a direct electrical and mechanical equivalent to the PDTC143ZQCZ. All specified electrical parameters, internal resistor values, and package specifications are identical. Both components are manufactured by Nexperia USA Inc. and comply with ROHS3 and REACH requirements.

The primary distinction between these parts is product status and automotive qualification. The PDTC143ZQCZ is classified as obsolete, while the PDTC143ZQC-QZ maintains active product status. The substitute part carries AEC-Q101 automotive qualification, indicating compliance with automotive industry reliability and quality standards.

For applications currently using the PDTC143ZQCZ, the PDTC143ZQC-QZ provides functional continuity with enhanced supply chain availability and automotive-grade qualification. No circuit modifications or design changes are required for substitution.

Frequently Asked Questions (FAQ)

Q: Can the PDTC143ZQC-QZ be used as a direct replacement for the PDTC143ZQCZ?

A: Yes. The PDTC143ZQC-QZ is electrically and mechanically identical to the PDTC143ZQCZ. All electrical parameters, internal resistor values, and package specifications match exactly. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The PDTC143ZQCZ is classified as obsolete, while the PDTC143ZQC-QZ is active. The substitute part includes AEC-Q101 automotive qualification. Electrical and mechanical specifications are identical.

Q: Are the package dimensions and pin configurations identical?

A: Yes. Both parts use the 3-XDFN Exposed Pad package (DFN1412D-3) with identical pin configurations and dimensions. Surface mount assembly processes require no modification.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the PDTC143ZQCZ and PDTC143ZQC-QZ carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture sensitivity restrictions.

Q: Are there any compliance or regulatory differences?

A: Both parts are ROHS3 compliant and REACH unaffected. The PDTC143ZQC-QZ includes AEC-Q101 automotive qualification, which is an additional certification not specified for the original part.

Q: Can the PDTC143ZQC-QZ be used in non-automotive applications?

A: Yes. Automotive qualification is a superset of standard industrial requirements. The PDTC143ZQC-QZ is suitable for all applications where the PDTC143ZQCZ was used.

Q: What is the current inventory status of the substitute part?

A: The PDTC143ZQC-QZ has 5970 pieces in stock as new original inventory. The PDTC143ZQCZ has 6028 pieces available.

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