PDTA143EQBZ Equivalent & Substitute Parts

Part Overview

The PDTA143EQBZ 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-base resistors (4.7 kOhms each) for simplified circuit design and reduced component count in switching applications.

The PDTA143EQBZ 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 utilizing this pre-biased transistor topology.

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)	4.7	kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 10mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	100	mV
Current - Collector Cutoff (Max)	100	nA
Frequency - Transition	180	MHz
Power - Max	340	mW
Package / Case	3-XDFN Exposed Pad	—
Mounting Type	Surface Mount, Wettable Flank	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution of the PDTA143EQBZ is determined by strict equivalence across the following critical 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): 4.7 kOhms
DC current gain (hFE): 30 minimum @ 10mA, 5V
Saturation voltage: 100 mV maximum @ 500µA, 10mA
Transition frequency: 180 MHz
Maximum power dissipation: 340 mW

Mechanical Equivalence Criteria:

Package type: 3-XDFN Exposed Pad (DFN1110D-3)
Mounting: Surface Mount with Wettable Flank
Lead-free and RoHS3 compliant

The substitute part PDTA143EQB-QZ meets all electrical and mechanical parameters specified for the PDTA143EQBZ. Both parts share the same base product number (PDTA143) and are manufactured by Nexperia USA Inc.

Parameter Comparison

Parameter	PDTA143EQBZ (Main)	PDTA143EQB-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)	4.7 kOhms	4.7 kOhms	✓
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 10mA, 5V	30 @ 10mA, 5V	✓
Vce Saturation (Max) @ Ib, Ic	100 mV @ 500µA, 10mA	100 mV @ 500µA, 10mA	✓
Current - Collector Cutoff (Max)	100 nA	100 nA	✓
Frequency - Transition	180 MHz	180 MHz	✓
Power - Max	340 mW	340 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	✓
Product Status	Obsolete	Active	—
Qualification	—	AEC-Q101	—
Moisture Sensitivity Level (MSL)	3 (168 Hours)	1 (Unlimited)	—

Engineering Selection Recommendations

The PDTA143EQB-QZ is the direct substitute for the obsolete PDTA143EQBZ. Both components are electrically and mechanically identical across all specified parameters, including collector current rating, breakdown voltage, internal resistor values, gain characteristics, and saturation performance.

The PDTA143EQB-QZ carries an active product status from Nexperia USA Inc., ensuring ongoing availability and supply chain support. This substitute part is qualified to AEC-Q101 automotive standards and features improved moisture sensitivity level (MSL 1 versus MSL 3), providing enhanced reliability for storage and handling in production environments.

All electrical performance characteristics remain unchanged between the main part and substitute. The 3-XDFN package with wettable flank and surface mount configuration are identical, permitting direct board-level substitution without design modification or PCB layout changes.

Frequently Asked Questions (FAQ)

Q: Can PDTA143EQB-QZ be used as a direct replacement for PDTA143EQBZ?

A: Yes. The PDTA143EQB-QZ is a direct substitute. All electrical parameters, internal resistor values, and package specifications are identical. No circuit design changes are required.

Q: What is the difference between PDTA143EQBZ and PDTA143EQB-QZ?

A: The primary differences are product status and qualification level. PDTA143EQBZ is obsolete; PDTA143EQB-QZ is active. PDTA143EQB-QZ carries AEC-Q101 automotive qualification and features MSL 1 (unlimited moisture sensitivity) compared to MSL 3 for the original part.

Q: Are the internal resistor values identical?

A: Yes. Both parts contain 4.7 kOhm base resistor (R1) and 4.7 kOhm emitter-base resistor (R2). Circuit biasing behavior is identical.

Q: Is the package footprint the same?

A: Yes. Both parts use the 3-XDFN Exposed Pad package (DFN1110D-3) with wettable flank surface mount configuration. PCB layouts are directly compatible.

Q: What are the maximum electrical ratings?

A: Maximum collector current is 100 mA, collector-emitter breakdown voltage is 50 V, and maximum power dissipation is 340 mW. Transition frequency is 180 MHz.

Q: Are both parts RoHS compliant?

A: Yes. Both PDTA143EQBZ and PDTA143EQB-QZ are ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level difference?

A: PDTA143EQBZ has MSL 3 (168 hours maximum storage at 30°C/60% RH). PDTA143EQB-QZ has MSL 1 (unlimited storage). This provides improved handling flexibility for the substitute part.

Q: Is AEC-Q101 qualification required for my application?

A: AEC-Q101 qualification is specific to automotive applications. PDTA143EQB-QZ carries this qualification; PDTA143EQBZ does not. Select based on application requirements.

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