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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single, Pre-Biased Bipolar Transistors

Nexperia USA Inc. PDTB143EQAZ

Name: PDTB143EQAZ
Brand: Nexperia USA Inc.
SKU: PDTB143EQAZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTB143EQAZ

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: PDTB143EQAZ.pdf

Description:: TRANS PREBIAS

Quantity:: RFQ Add To RFQ list

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Inventory:35,000

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Product details

Overview

PDTB143EQAZ from Nexperia is a PNP resistor-equipped transistor (RET) in a DFN1010D-3 (SOT1215) package, designed for digital switching applications with −50 V V_CEO, −500 mA I_O, and built-in 4.7 kΩ bias resistors (R1 = R2). It serves as a compact, AEC-Q101 qualified load switch or IC input controller in space-constrained automotive and industrial PCBs.

For engineers reviewing the PDTB143EQAZ datasheet, PDTB143EQAZ pinout, PDTB143EQAZ application, or PDTB143EQAZ equivalent, key selection criteria include its −500 mA output capability, ±10% resistor ratio tolerance, low 0.37 mm profile, AOI-suitable side pads, and compatibility with BC807/BC817 replacements in digital logic interfaces.

Technical Context

This RET integrates a PNP bipolar transistor with two matched on-die bias resistors (R1 = R2 = 4.7 kΩ) to eliminate external base components. Its internal configuration enables direct TTL/CMOS-level drive without external pull-up or current-limiting resistors.

The device operates with an off-state input voltage (V_I(off)) of −1.5 V max at I_C = −100 µA and on-state input voltage (V_I(on)) of −2.2 V max at I_C = −20 mA, supporting robust noise margin in 3.3 V and 5 V digital systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum safe collector-emitter blocking voltage in open-base configuration
I_O	−500 mA - Continuous DC output current capability at T_amb ≤ 25 °C with standard PCB layout
R1 / R2	4.7 kΩ each - Matched on-die base bias resistors enabling single-resistor-equivalent drive
R2/R1 tolerance	±10% - Ensures predictable current gain and consistent switching thresholds across production lots
V_CE(sat)	−100 mV max at I_C = −50 mA, I_B = −2.5 mA - Low saturation voltage minimizes power loss in high-duty-cycle switching
h_FE	60 min at V_CE = −5 V, I_C = −50 mA - Sufficient DC current gain for reliable digital on/off control without external amplification
f_T	150 MHz - Supports fast edge transitions in signal routing and interface buffering up to ~10–20 MHz toggle rates

Pinout & Package

DFN1010D-3 (SOT1215) is a leadless, ultra-thin (0.37 mm height), thermally enhanced plastic package with visible and solderable side pads for automated optical inspection (AOI) and high-density mounting.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base)	Accepts logic-level drive; internally connected to R1 and R2 junction
2	GND (emitter)	Emitter terminal tied to system ground; serves as common reference for bias network
3 & 4	Output (collector)	Dual-collector terminals sharing same node; reduce trace inductance and improve thermal spreading

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock
Reduced component count	Eliminates need for two external base resistors, simplifying BOM and reducing placement cost
Low-profile packaging	0.37 mm max height enables use in ultra-thin modules and wearable electronics
AOI-compatible side pads	Visible copper terminations allow automated optical inspection of solder joints without X-ray
Thermal resistance	R_th(j-sp) = 40 K/W - Enables efficient heat transfer to PCB via solder points under continuous load

Applications

Automotive Door Module Control

Industrial PLC Input Conditioning

Use Scenario: Switching window lift motor drivers and mirror position actuators in door control units.

IC Role / Device Role / Timing Role: Acts as a level-shifted, current-limited interface between MCU GPIO and 12 V loads.

Use Value: −500 mA rating supports intermittent motor surge currents; AEC-Q101 ensures operation over −40 °C to +125 °C ambient.

Use Scenario: Converting 24 V field sensor signals to 3.3 V logic levels for microcontroller input.

IC Role / Device Role / Timing Role: Functions as a digitally controlled, isolated input buffer with built-in pull-down and threshold control.

Use Value: ±10% resistor matching ensures stable VI(on)/VI(off) thresholds across temperature, reducing false triggering in noisy factory environments.

Consumer Appliance Power Sequencing

Medical Diagnostic Equipment Interface

Use Scenario: Enabling/disabling auxiliary power rails (e.g., display backlight, fan control) during boot-up sequence.

IC Role / Device Role / Timing Role: Serves as a low-side active-low enable switch driven directly by FPGA or ASIC outputs.

Use Value: −100 mV V_CE(sat) limits conduction loss to <10 mW at 100 mA, minimizing self-heating in sealed enclosures.

Use Scenario: Isolating patient-connected analog front-end signals from digital processing stages.

IC Role / Device Role / Timing Role: Provides galvanically separated, fail-safe signal gating between isolated domains.

Use Value: Dual-collector pins (pins 3 & 4) lower parasitic inductance, preserving signal integrity for sub-µs timing-critical diagnostics.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PDTB123EQAZ	R1 = R2 = 2.2 kΩ; lower input threshold (VI(on) = −2.0 V max); h_FE = 40 min	Better suited for higher-speed switching where faster turn-on is required	Select when driving capacitive loads or requiring shorter propagation delay
BC807-40,215	Discrete PNP BJT without integrated resistors; requires external base bias network	Higher design flexibility but increases component count and layout area	Choose only if precise gain tuning or non-standard bias ratios are needed

Compared with PDTB123EQAZ, PDTB143EQAZ offers higher h_FE and tighter VI(on) control for stable logic interfacing, while BC807-40 demands additional passives and layout effort-making PDTB143EQAZ optimal for cost-sensitive, high-volume digital switching where board space and assembly yield are critical.

Availability

PDTB143EQAZ is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input conditioning, consumer appliance power sequencing, and medical diagnostic equipment interface requiring stable component supply and AEC-Q101 compliance.

Supply support for PDTB143EQAZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.

The PDTB143EQAZ belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to replace legacy BJT+resistor combinations in digital switching and interface applications with improved manufacturability and thermal performance.

FAQ

What is the maximum allowable continuous collector current for PDTB143EQAZ?

The maximum continuous collector current is −500 mA at T_amb ≤ 25 °C on a standard FR4 PCB with single-sided copper and tin plating. Derating applies above 25 °C per Figure 2; at 100 °C ambient, usable current drops to approximately −300 mA under the same layout conditions.

Can PDTB143EQAZ be used in place of BC807-40 without circuit modification?

No-direct replacement requires verification of drive voltage compatibility. PDTB143EQAZ has built-in 4.7 kΩ resistors and specified VI(on)/VI(off) thresholds, whereas BC807-40 needs external base resistors. Layout changes and logic-level validation are necessary to ensure correct switching behavior and avoid unintended conduction.

Does PDTB143EQAZ support reflow soldering with standard lead-free profiles?

Yes-Nexperia specifies full compatibility with JEDEC J-STD-020D-compliant lead-free reflow profiles. The DFN1010D-3 package withstands peak temperatures up to 260 °C for 30 seconds, and the recommended footprint (Figure 34) ensures reliable solder joint formation with minimal voiding.

What is the significance of dual collector terminals (pins 3 and 4) on PDTB143EQAZ?

Pins 3 and 4 are internally shorted collector terminals that share the same electrical node. This dual-terminal design reduces effective bond wire inductance and improves thermal dissipation by distributing current across two solder joints, enhancing reliability in pulsed-load applications and high-frequency switching scenarios.

PDTB143EQAZ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Transistor Type:: -

Current - Collector (Ic) (Max):: -

Voltage - Collector Emitter Breakdown (Max):: -

Resistor - Base (R1):: -

Resistor - Emitter Base (R2):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

Frequency - Transition:: -

Power - Max:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

PDTB143EQAZ FAQ

1.How can I place an order for PDTB143EQAZ through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTB143EQAZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PDTB143EQAZ reliable?

The price and inventory of PDTB143EQAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTB143EQAZ is usually 5 days.

3.What payment methods are accepted for PDTB143EQAZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTB143EQAZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTB143EQAZ?

PDTB143EQAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTB143EQAZ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PDTB143EQAZ?

For technical support, including PDTB143EQAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTB143EQAZ requirements.

6.How does Aetrix verify that PDTB143EQAZ is sourced from the original manufacturer or authorized distributors?

All PDTB143EQAZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PDTB143EQAZ meets industry standards.

7.What is the process for return or replacement of PDTB143EQAZ?

All PDTB143EQAZ units undergo pre-shipment inspection (PSI). If there is an issue with PDTB143EQAZ, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PDTB143EQAZ part is unused and in its original packaging.

Return procedure for PDTB143EQAZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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