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Nexperia USA Inc. PDTD143XUX
- Part No.:
- PDTD143XUX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTD143XUX.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,355
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Product details
Overview
PDTD143XUX from Nexperia is a 500 mA, 50 V NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, integrating 4.7 kΩ input bias resistor (R1) and 10 kΩ base-emitter resistor (R2) with ±10 % ratio tolerance. It functions as a single-chip digital switch for logic-level driven loads in automotive and industrial control circuits, delivering 70 hFE at 50 mA and 100 mV VCE(sat) under standard switching conditions.
For engineers reviewing the PDTD143XUX datasheet, PDTD143XUX pinout, PDTD143XUX application, or PDTD143XUX equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C junction temperature rating, built-in resistor ratio of 2.13, VI(on) of 1.25 V typical at 20 mA IC, and compatibility with 3.3 V/5 V microcontroller GPIOs driving resistive or inductive loads.
Technical Context
This RET integrates an NPN silicon transistor with two monolithic thin-film resistors-R1 (4.7 kΩ) connected between input and base, R2 (10 kΩ) between base and emitter-to form a self-biased configuration. It eliminates external base resistors and simplifies drive circuitry for digital inputs.
The device operates with VI(off) ≤ 0.75 V (max) to ensure reliable turn-off under noise margin constraints, and supports high-temperature ambient operation up to +175 °C while maintaining 500 mA continuous output current capability and 50 V VCEO rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive and industrial power rails. |
| IO | 500 mA - Continuous collector current rating; supports direct switching of solenoids, relays, and LED arrays without external amplification. |
| R1 / R2 | 4.7 kΩ / 10 kΩ - Precise internal bias network with 2.13 ratio; ensures stable saturation and predictable turn-on threshold across temperature. |
| hFE | 70 (min) at IC = 50 mA - DC current gain sufficient for low-drive GPIO applications; reduces required base current to ~0.7 mA for 50 mA load. |
| VCE(sat) | 100 mV (max) at IC = 50 mA, IB = 2.5 mA - Low saturation voltage minimizes conduction loss and thermal rise in high-duty-cycle switching. |
| VI(on) | 1.25 V (typ) at IC = 20 mA - On-state input voltage compatible with 3.3 V logic families; guarantees activation with margin above 1.0 V threshold. |
| Tj max | 175 °C - Junction temperature limit enabling deployment in engine bay, powertrain, and industrial motor control environments. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.15 mm × 0.45 mm body, 3-terminal leadframe, tin-plated terminations, optimized for reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base via R1) | Logic-level signal input; connects internally to R1 (4.7 kΩ), then to transistor base - no external pull-up/down needed. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; serves as common return path for load current and bias network. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., relay coil or LED anode); requires external supply on load side. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Qualified per Automotive Electronics Council stress test standard for discrete semiconductors - suitable for under-hood and safety-critical modules. |
| Built-in R1/R2 network | Monolithic 4.7 kΩ + 10 kΩ resistor pair with ±10 % ratio tolerance - eliminates two external components and PCB layout uncertainty. |
| High-temperature operation | Rated for continuous operation at Tamb = −55 °C to +175 °C - supports engine control units, transmission controllers, and industrial PLC I/O stages. |
| Low VI(off) | 0.75 V (max) off-state input voltage - ensures robust immunity to noise and prevents false turn-on in noisy 12 V/24 V systems. |
| Reduced component count | Replaces BC807/BC817 + two base resistors - cuts BOM cost, assembly steps, and failure modes in high-volume automotive electronics. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Output |
|---|---|
|
Use Scenario: Driving door lock actuators and interior lighting from 3.3 V MCU GPIOs in BCM subassemblies. IC Role / Device Role / Timing Role: Single-chip logic-level switch replacing discrete BJT + resistors; provides fast, low-loss switching with integrated biasing. Use Value: Eliminates 2 external resistors per channel, reduces PCB area by 1.2 mm² per instance, and meets AEC-Q101 for 15-year vehicle lifetime. |
Use Scenario: Controlling 24 V solenoid valves and indicator LEDs in DIN-rail mounted PLC output cards. IC Role / Device Role / Timing Role: High-reliability digital output stage with guaranteed 500 mA sink capability and 175 °C thermal margin. Use Value: Enables compact 16-channel output modules with <1.5 W total dissipation per channel at full load and 100% duty cycle. |
| Consumer Appliance Motor Driver | Medical Diagnostic Equipment Fan Control |
|
Use Scenario: Switching small DC brush motors in smart washing machines using 5 V logic signals from main controller. IC Role / Device Role / Timing Role: Low-VI(on) NPN RET acting as level-shifting interface between MCU and motor H-bridge enable lines. Use Value: Ensures clean turn-on at 1.25 V typical VI(on), avoids shoot-through risk during power-up, and withstands 85 °C ambient in sealed enclosures. |
Use Scenario: Regulating cooling fan speed in portable ultrasound devices where EMI and space are critical constraints. IC Role / Device Role / Timing Role: Low-noise, low-capacitance (7 pF Cc) switching element for PWM-driven fans operating at 25 kHz. Use Value: Minimizes electromagnetic emissions due to low collector capacitance and sharp VCE(sat) transition, supporting Class B EMC compliance. |
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 |
|---|---|---|---|
| PDTD143EU | R2 = 4.7 kΩ (vs. 10 kΩ); R2/R1 ratio = 1.0 (vs. 2.13); higher VI(off) (0.9 V typ) | Lower input sensitivity; less immune to noise; suited for higher-voltage logic interfaces (>2.5 V) | Select when driving from 5 V CMOS outputs where tighter VI(off) margin is acceptable. |
| PDTC143XU | PNP complement; same R1/R2 values but inverted polarity; VECO = 50 V; IO = −500 mA | Used for high-side switching or complementary push-pull stages; not interchangeable without circuit redesign | Choose only for PNP-side load control or dual-NPN/PNP driver pairs in level-shifted interfaces. |
Compared with PDTD143EU, PDTD143XUX offers superior noise immunity and lower drive voltage requirements due to its higher R2/R1 ratio and lower VI(off); versus PDTC143XU, it provides direct NPN logic-compatible switching without polarity inversion or additional level-shifting circuitry.
Availability
PDTD143XUX is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital outputs, and medical diagnostic equipment requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for PDTD143XUX 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 and logic devices for automotive, industrial, and consumer markets.
PDTD143XUX belongs to the PDTD1xxxU series of AEC-Q101-qualified resistor-equipped transistors designed specifically for space-constrained, high-reliability digital switching in automotive and industrial control systems.
FAQ
What is the maximum allowable input voltage (VI) for PDTD143XUX?
The absolute maximum input voltage is +30 V, as specified in Table 6 of the datasheet. However, the recommended operating range is −7 V to +30 V, with VI(on) defined at 1.25 V typical and VI(off) at 0.75 V maximum - ensuring safe operation with standard 3.3 V and 5 V logic families without clamping diodes.
Can PDTD143XUX replace BC817-40 in existing designs?
Yes, with minor layout adjustment: PDTD143XUX integrates R1 and R2, so external base resistors must be removed. Its 500 mA IO and 50 V VCEO match BC817-40 ratings, and its 70 hFE exceeds BC817-40's minimum 250 hFE at 10 mA - making it suitable for lower-base-current drive scenarios while improving noise immunity.
Is thermal derating required for continuous 500 mA operation?
Yes - at Tamb = 25 °C on a 4-layer FR4 PCB, Ptot is 425 mW (Table 6). At 500 mA and 100 mV VCE(sat), power dissipation is 50 mW, well within limits. But at 100 °C ambient, derating reduces usable current; full 500 mA is sustainable only below ~85 °C ambient with adequate copper area.
Does PDTD143XUX support PWM switching at frequencies above 10 kHz?
Yes - with fT = 225 MHz (typical) and Cc = 7 pF, it supports clean switching up to at least 100 kHz. Measured VCE(sat) and VI(on)/VI(off) transitions remain stable across temperature, and its low 100 mV saturation voltage minimizes heating during high-duty-cycle PWM operation in fan and motor control.
PDTD143XUX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- 300 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTD143XUX FAQ
1.How can I place an order for PDTD143XUX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTD143XUX 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 PDTD143XUX reliable?
The price and inventory of PDTD143XUX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTD143XUX is usually 5 days.
3.What payment methods are accepted for PDTD143XUX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTD143XUX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTD143XUX?
PDTD143XUX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTD143XUX 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 PDTD143XUX?
For technical support, including PDTD143XUX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTD143XUX requirements.
6.How does Aetrix verify that PDTD143XUX is sourced from the original manufacturer or authorized distributors?
All PDTD143XUX 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 PDTD143XUX meets industry standards.
7.What is the process for return or replacement of PDTD143XUX?
All PDTD143XUX units undergo pre-shipment inspection (PSI). If there is an issue with PDTD143XUX, 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 PDTD143XUX part is unused and in its original packaging.
Return procedure for PDTD143XUX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTD143XUX Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
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DTC114EKAT146
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DRDNB16W-7
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PDTC114ET,215
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MMUN2211LT1G
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