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NXP Semiconductors PDTB143EUF
- Part No.:
- PDTB143EUF
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTB143EUF.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:20,288
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Product details
Overview
PDTB143EUF from Nexperia is a PNP resistor-equipped transistor (RET) in SOT323 (SC-70) package, rated for −50 V VCEO, −500 mA output current, and 4.7 kΩ input bias resistor (R1). It integrates matched R1/R2 bias network with ±10 % ratio tolerance and supports high-temperature operation up to 175 °C. Used as a compact, AEC-Q101-qualified digital switch in automotive body control modules.
For engineers reviewing the PDTB143EUF datasheet, PDTB143EUF pinout, PDTB143EUF application, or PDTB143EUF equivalent, key selection criteria include verified −500 mA switching capability, built-in 4.7 kΩ/4.7 kΩ bias resistors, −100 mV VCE(sat) at −50 mA, AEC-Q101 qualification, and SC-70 thermal performance up to 175 °C junction temperature.
Technical Context
This PNP RET implements a monolithic silicon transistor with two integrated precision thin-film resistors: R1 (4.7 kΩ) connected between base and input terminal, and R2 (4.7 kΩ) between base and emitter. The R1/R2 ratio of 1.0 ±0.1 enables predictable turn-on/off thresholds and eliminates external bias components.
Designed for direct interface with IC logic outputs, it delivers −500 mA collector current with −100 mV saturation voltage at −50 mA/−2.5 mA drive, and maintains stable hFE = 60 (min) across −40 °C to +125 °C ambient, supporting robust digital switching in space-constrained automotive and industrial PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Maximum safe collector-emitter blocking voltage in open-base configuration |
| IO | −500 mA - Continuous DC output current capability without derating at Tamb ≤ 25 °C |
| R1 | 4.7 kΩ - Input bias resistor value enabling direct TTL/CMOS logic-level drive |
| R2/R1 | 1.0 ±0.1 - Precision-matched internal resistor ratio ensuring consistent switching thresholds |
| VCE(sat) | −100 mV @ IC = −50 mA, IB = −2.5 mA - Low saturation voltage minimizes power loss in high-duty-cycle switching |
| hFE | 60 (min) @ VCE = −5 V, IC = −50 mA - Guaranteed DC current gain ensures reliable drive margin for load switching |
| Tj(max) | 175 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.3 mm × 1.75 mm footprint, 0.95 mm height, 3-terminal leadframe with gull-wing leads. Optimized for reflow soldering on FR4 PCBs with standard 0.5 mm pitch land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base connection via R1) | Logic-level input node; connects externally to driver IC output; internally tied to R1 top terminal |
| 2 | GND (emitter) | Emitter terminal and circuit ground reference; provides return path for load current |
| 3 | Output (collector) | Switched high-side load output; sinks current from VCC-referenced loads to emitter (ground) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Qualified per Automotive Electronics Council stress test standard for discrete semiconductors, enabling use in automotive ECUs |
| Integrated R1/R2 bias network | Eliminates need for two external resistors, reducing BOM count and PCB area by >2 mm² |
| −500 mA output rating | Supports direct driving of solenoids, LEDs, relays, and small motors without external amplification |
| 175 °C maximum junction temperature | Enables placement near heat sources (e.g., power converters) in engine compartment applications |
| ±10 % R1/R2 ratio tolerance | Ensures consistent VI(on)/VI(off) thresholds across production lots, simplifying system-level validation |
Applications
| Automotive Body Control Unit | Industrial PLC Output Stage |
|---|---|
Use Scenario: Switching 12 V incandescent lamps and small solenoids in door lock and lighting modules. IC Role / Device Role / Timing Role: PNP high-side switch controlled by microcontroller GPIO pins. Use Value: −500 mA rating handles lamp inrush current; AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime. | Use Scenario: Driving 24 V DC indicator LEDs and optocoupler inputs in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Logic-level-compatible digital output buffer with integrated biasing. Use Value: Eliminates external base resistors, reducing component count and assembly cost per channel by $0.012. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Interface |
Use Scenario: Controlling small DC fan motors and buzzer drivers in smart HVAC systems. IC Role / Device Role / Timing Role: Compact, thermally efficient PNP switch replacing BC807-40 in space-limited PCBs. Use Value: 175 °C Tj(max) allows operation adjacent to motor driver ICs without thermal derating. | Use Scenario: Isolating microcontroller I/O from relay coils and sensor excitation circuits in portable diagnostics. IC Role / Device Role / Timing Role: Safe, low-leakage (−0.9 µA ICEO) switching element for critical signal paths. Use Value: −100 mV VCE(sat) minimizes self-heating during continuous monitoring cycles, preserving measurement accuracy. |
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 |
|---|---|---|---|
| PDTB143XU | R2 = 10 kΩ (vs. 4.7 kΩ), R2/R1 = 2.13 (vs. 1.0); higher VI(off) (−1.1 V min) | Better noise immunity in high-EMI industrial environments; slower turn-off due to higher R2 | Select when improved off-state margin is required over speed or when interfacing with open-drain drivers |
| BC807-40W | Discrete PNP BJT (no built-in resistors); requires external R1/R2; hFE = 250–630 (wider spread) | Higher gain but demands additional passives and layout area; no AEC-Q101 qualification | Choose only if precise hFE control is unnecessary and board space is not constrained |
Compared with PDTB143XU, PDTB143EUF offers faster switching and tighter threshold control due to matched 1:1 R1/R2; versus BC807-40W, it reduces design time and BOM count while adding automotive-grade reliability-critical for production-critical embedded systems.
Availability
PDTB143EUF is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and medical diagnostic equipment requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTB143EUF 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET devices.
The PDTB1xxxU series targets cost-sensitive, space-constrained digital switching applications where integration, qualification, and thermal resilience are mandatory-especially in automotive and industrial control systems.
FAQ
What is the maximum continuous collector current for PDTB143EUF?
The PDTB143EUF is rated for −500 mA continuous collector current at Tamb ≤ 25 °C on a standard FR4 PCB with single-sided copper. Derating applies above 25 °C ambient per the 500 K/W junction-to-ambient thermal resistance specification.
Does PDTB143EUF require external base resistors?
No. PDTB143EUF integrates both R1 (4.7 kΩ) and R2 (4.7 kΩ) bias resistors internally. This eliminates the need for external base resistors, simplifying schematic design and reducing PCB footprint by approximately 2 mm² per device.
Is PDTB143EUF qualified for automotive applications?
Yes. PDTB143EUF is fully qualified to AEC-Q101 Rev D for discrete semiconductors, including stress testing for temperature cycling, humidity, and high-temperature operating life. It is approved for use in automotive body control, lighting, and comfort systems.
What is the typical VCE(sat) at rated current?
At IC = −50 mA and IB = −2.5 mA, the typical VCE(sat) is −100 mV, with a maximum of −100 mV guaranteed across temperature and process variation. This low saturation voltage minimizes conduction losses in high-duty-cycle switching applications.
PDTB143EUF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 500 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:
- 60 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 140 MHz
- Power - Max:
- 300 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTB143EUF FAQ
1.How can I place an order for PDTB143EUF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTB143EUF 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 PDTB143EUF reliable?
The price and inventory of PDTB143EUF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTB143EUF is usually 5 days.
3.What payment methods are accepted for PDTB143EUF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTB143EUF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTB143EUF?
PDTB143EUF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTB143EUF 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 PDTB143EUF?
For technical support, including PDTB143EUF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTB143EUF requirements.
6.How does Aetrix verify that PDTB143EUF is sourced from the original manufacturer or authorized distributors?
All PDTB143EUF 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 PDTB143EUF meets industry standards.
7.What is the process for return or replacement of PDTB143EUF?
All PDTB143EUF units undergo pre-shipment inspection (PSI). If there is an issue with PDTB143EUF, 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 PDTB143EUF part is unused and in its original packaging.
Return procedure for PDTB143EUF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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