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Nexperia USA Inc. PDTD143XTR
- Part No.:
- PDTD143XTR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTD143XTR.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,219
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Product details
Overview
PDTD143XTR from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT23 package, designed for digital switching with 50 V VCEO, 500 mA IO, and integrated bias resistors R1 = 4.7 kΩ and R2 = 10 kΩ. It serves as a simplified, space-saving replacement for discrete base-resistor + BJT combinations in automotive body control modules, LED drivers, and microcontroller I/O interface circuits.
For engineers reviewing the PDTD143XTR datasheet, PDTD143XTR pinout, PDTD143XTR application, or PDTD143XTR equivalent, this page delivers verified electrical parameters, thermal derating behavior, input/output voltage thresholds across temperature, and validated automotive-grade alternatives - all critical for robust digital load switching design.
Technical Context
This RET integrates a monolithic NPN transistor with two precision laser-trimmed on-die resistors: R1 connected between input (base) and ground, and R2 between collector and base. The R2/R1 ratio of 2.13 ±0.21 enables predictable current gain stabilization without external components.
It operates within −55 °C to +175 °C ambient range, supports VI(on) ≤ 2.0 V at IC = 20 mA and VI(off) ≥ 0.5 V at IC = 100 µA, and maintains hFE ≥ 70 at VCE = 5 V, IC = 50 mA - ensuring reliable saturation and cutoff in high-temperature automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; defines rail compatibility with 24 V automotive systems. |
| IO | 500 mA - Continuous output current rating; supports driving medium-power loads like relays or LEDs directly. |
| R1 | 4.7 kΩ ±28% - Input bias resistor value; sets base current magnitude and determines required drive voltage level. |
| R2/R1 | 2.13 ±0.21 - Fixed internal feedback ratio; stabilizes operating point against transistor β variation and temperature drift. |
| VCE(sat) | ≤100 mV at IC = 50 mA, IB = 2.5 mA - Low saturation voltage ensures minimal conduction loss and heat generation. |
| Tj(max) | 175 °C - Maximum junction temperature; enables operation in under-hood environments without forced cooling. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors; validated for life-critical vehicle subsystems. |
Pinout & Package
Package: SOT23 (TO-236AB), surface-mount plastic package with 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, and standard FR4 PCB footprint for reflow/wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Signal entry point; connects to MCU GPIO or logic driver; internally tied to R1 and R2. |
| 2 | GND (emitter) | Emitter terminal and reference node for R1; must be connected to system ground plane. |
| 3 | Output (collector) | Switched load connection point; carries full output current; internally connected to R2. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Eliminates need for two external resistors, reducing PCB area by ~2.5 mm² and assembly steps. |
| ±10% R2/R1 tolerance | Ensures consistent turn-on characteristics across production lots, minimizing calibration in mass-produced ECUs. |
| High-temp operation | Rated up to +175 °C junction temperature - suitable for engine bay, transmission control, and lighting modules. |
| Low VCE(sat) | ≤100 mV at rated current - reduces power dissipation to <5 mW during saturation, easing thermal management. |
| AEC-Q101 qualification | Validated for automotive use per stress test standards including HTGB, HTRB, and ESD-HBM ≥2 kV. |
Applications
| Automotive Body Control Unit | LED Driver Interface |
|---|---|
Use Scenario: Driving door lock actuators, window lift motors, and interior lighting via 3.3 V/5 V MCU GPIOs. IC Role / Device Role / Timing Role: Digital switch translating logic-level signals into 24 V load control with built-in current limiting. Use Value: Eliminates discrete resistor placement errors and improves long-term reliability over temperature cycling in harsh vehicle environments. | Use Scenario: Controlling high-brightness LED strings in headlamps, DRLs, and taillights using PWM from microcontrollers. IC Role / Device Role / Timing Role: Constant-current switch enabling precise duty-cycle control without external current-sense circuitry. Use Value: Reduces bill-of-materials count and layout complexity while maintaining stable LED brightness across −40 °C to +125 °C ambient. |
| Industrial Sensor Interface | Consumer Appliance Control |
Use Scenario: Isolating and amplifying digital outputs from Hall-effect or reed sensors in motor control feedback loops. IC Role / Device Role / Timing Role: Level-shifting and buffering sensor signals before feeding into ADC or comparator inputs. Use Value: Provides noise-immune signal conditioning with predictable VI(on)/VI(off) thresholds, improving false-trigger immunity. | Use Scenario: Replacing BC807 transistors in washing machine control boards to drive solenoids, valves, and display backlights. IC Role / Device Role / Timing Role: General-purpose digital switch handling intermittent 100–500 mA loads with fast turn-on/turn-off response. Use Value: Enables direct drop-in replacement with no schematic change, lowering manufacturing cost and inventory SKUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC143XTR | Same SOT23 package and R1/R2 values but PNP polarity; complementary device for high-side switching. | Used where load connects to VCC instead of GND; requires inverted logic drive. | Select when designing dual-polarity driver stages or push-pull configurations requiring matched RET characteristics. |
| BC847BW | Standard NPN BJT without integrated resistors; requires external RB and RBE; hFE = 110–800 vs. fixed gain behavior of RET. | Suitable only when precise biasing is managed externally; lacks AEC-Q101 qualification. | Choose only for non-automotive, cost-sensitive designs where board space and qualification are secondary concerns. |
Compared with PDTC143XTR and BC847BW, PDTD143XTR uniquely combines automotive qualification, integrated biasing, and guaranteed R2/R1 matching - making it optimal for space-constrained, high-reliability digital switching where design validation time and component count reduction are critical.
Availability
PDTD143XTR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, LED lighting control, and consumer appliance power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for PDTD143XTR 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 solutions for automotive, industrial, and mobile markets.
This part belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) family, engineered specifically to replace discrete BJT + resistor combinations in automotive digital I/O and load-switching applications.
FAQ
What is the maximum continuous output current for PDTD143XTR?
The PDTD143XTR is rated for 500 mA continuous output current (IO) under specified PCB mounting conditions (FR4, 4-layer copper). Derating applies above 25 °C ambient - e.g., ~320 mA at 85 °C ambient per the power derating curve in Figure 1 of the datasheet.
Does PDTD143XTR require external base resistors?
No. PDTD143XTR integrates R1 = 4.7 kΩ (input-to-emitter) and R2 = 10 kΩ (collector-to-base) on-die. These eliminate the need for external bias resistors, simplifying layout and reducing component count in digital switching applications.
Is PDTD143XTR suitable for 3.3 V microcontroller GPIO drive?
Yes. With VI(on) ≤ 2.0 V at IC = 20 mA and VI(off) ≥ 0.5 V at IC = 100 µA, PDTD143XTR reliably switches with standard 3.3 V logic levels. Its low input threshold ensures full saturation even with marginally driven GPIOs.
How does the R2/R1 ratio affect circuit performance?
The R2/R1 ratio of 2.13 ±0.21 provides negative feedback that stabilizes the operating point against variations in transistor hFE and temperature. This results in consistent switching thresholds and reduced sensitivity to process spread - critical for high-volume automotive production.
PDTD143XTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- 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):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 70 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 225 MHz
- Power - Max:
- 320 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTD143XTR FAQ
1.How can I place an order for PDTD143XTR through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTD143XTR 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 PDTD143XTR reliable?
The price and inventory of PDTD143XTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTD143XTR is usually 5 days.
3.What payment methods are accepted for PDTD143XTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTD143XTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTD143XTR?
PDTD143XTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTD143XTR 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 PDTD143XTR?
For technical support, including PDTD143XTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTD143XTR requirements.
6.How does Aetrix verify that PDTD143XTR is sourced from the original manufacturer or authorized distributors?
All PDTD143XTR 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 PDTD143XTR meets industry standards.
7.What is the process for return or replacement of PDTD143XTR?
All PDTD143XTR units undergo pre-shipment inspection (PSI). If there is an issue with PDTD143XTR, 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 PDTD143XTR part is unused and in its original packaging.
Return procedure for PDTD143XTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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