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Nexperia USA Inc. PDTB143XUX
- Part No.:
- PDTB143XUX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTB143XUX.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,129
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Product details
Overview
PDTB143XUX from Nexperia is a PNP resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching applications with built-in bias resistors R1 = 4.7 kΩ and R2 = 10 kΩ, −50 V VCEO rating, −500 mA output current capability, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDTB143XUX datasheet, PDTB143XUX pinout, PDTB143XUX application, or PDTB143XUX equivalent, this device serves as a space- and BOM-optimized replacement for discrete base-resistor transistor configurations in logic-level interface, load switching, and high-temperature embedded control circuits.
Technical Context
This RET integrates a PNP bipolar transistor with two monolithically embedded silicon resistors: R1 (base input resistor) and R2 (base-emitter feedback resistor), enabling direct connection to CMOS/TTL outputs without external biasing components. Its R2/R1 ratio of 2.13 ±0.21 ensures stable saturation under varying temperature and process conditions.
The device operates across −55 °C to +175 °C ambient range, supports VI(on) ≤ −1.4 V at IC = −20 mA, and delivers VCE(sat) ≤ −100 mV at IC = −50 mA/IB = −2.5 mA - critical for low-power, high-reliability digital switching in constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - maximum collector-emitter voltage before breakdown; enables safe operation in 24 V automotive and industrial supply rails. |
| IO | −500 mA - continuous DC output current capacity; supports driving medium-power loads like relays, LEDs, and small solenoids. |
| R1 | 4.7 kΩ ±30 % - input bias resistor; sets base current when driven by logic-level signals, eliminating need for external pull-up/down. |
| R2 | 10 kΩ ±30 % - base-emitter feedback resistor; improves turn-off speed and noise immunity by shunting leakage current. |
| hFE | 70 (typ.) at IC = −50 mA - DC current gain; ensures robust saturation with low drive current, reducing MCU GPIO loading. |
| VCE(sat) | ≤ −100 mV at IC = −50 mA/IB = −2.5 mA - low saturation voltage minimizes power loss and self-heating in switching mode. |
| Tj max | +175 °C - maximum junction temperature; supports operation in engine bay, powertrain, and under-hood automotive modules. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 3-pin, ultra-small footprint (2.2 mm × 1.35 mm × 0.95 mm), optimized for high-density PCBs and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level input signal to control transistor conduction state. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; provides return path for load current and reference for input voltage thresholds. |
| 3 | Output (collector) | Switched high-side output node; sinks current from load connected between VCC and collector. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Eliminates 2 external resistors per switch, reducing BOM count, layout area, and assembly cost in multi-channel digital I/O designs. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, HAST, and ESD testing - suitable for body control modules and ADAS subsystems. |
| High-temperature operation | Rated up to +175 °C junction temperature - enables placement near heat sources (e.g., power converters, motors) without derating. |
| ±10 % R2/R1 tolerance | Ensures consistent turn-on/off behavior across production lots and temperature extremes, improving timing predictability in digital interfaces. |
| Low VI(off) threshold | VI(off) ≤ −0.75 V guarantees reliable cutoff even with noisy or weakly driven inputs, preventing unintended load activation. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Output |
|---|---|
|
Use Scenario: Driving door lock actuators, mirror heaters, and interior lighting from microcontroller GPIOs in vehicle body control units. IC Role / Device Role: High-side switch controlling 12 V/24 V resistive and inductive loads with integrated base biasing. Use Value: Reduces component count per channel by two resistors, improves thermal margin over discrete solutions, and meets AEC-Q101 requirements out-of-box. |
Use Scenario: Isolating and switching 24 V DC field devices (sensors, valves, indicators) in programmable logic controller output modules. IC Role / Device Role: Logic-compatible PNP switch translating 3.3 V/5 V controller outputs into robust 24 V load control. Use Value: Enables compact, high-channel-count output cards with guaranteed VI(on)/VI(off) margins and <100 mV saturation loss. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Interface |
|
Use Scenario: Controlling small DC brush motors and cooling fans in smart home appliances (dishwashers, HVAC systems) where space and reliability are critical. IC Role / Device Role: Low-power, thermally efficient switching element interfacing MCU outputs to motor driver enable lines or fan PWM stages. Use Value: Delivers −500 mA peak current with minimal board area and no external bias network, supporting UL/IEC60730 Class B compliance via reduced failure modes. |
Use Scenario: Enabling/disabling analog sensor signal paths and isolation relays in portable diagnostic tools requiring long-term stability and low leakage. IC Role / Device Role: Precision-controlled switch ensuring <0.6 µA ICEO at −50 V and −40 °C to prevent signal path crosstalk or drift. Use Value: Guarantees sub-microamp off-state leakage and stable hFE across medical operating temperature ranges (−20 °C to +55 °C). |
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 |
|---|---|---|---|
| PDTB143EU | R2 = 4.7 kΩ (R2/R1 = 1.0); lower R2/R1 ratio reduces turn-off speed and increases sensitivity to input noise. | Less suitable for fast-switching or noisy environments; higher risk of false turn-on in EMI-prone industrial settings. | Select PDTB143EU only when faster turn-on is prioritized over noise immunity and guaranteed cutoff. |
| PDTC143XU | NPN complement; same R1/R2 values but opposite polarity; requires inverted logic drive and low-side load configuration. | Cannot replace PDTB143XUX in high-side switching topologies without circuit redesign and level-shifting. | Choose PDTC143XU only for low-side switching applications where NPN topology is preferred and layout permits emitter-referenced loads. |
Compared with PDTB143EU and PDTC143XU, PDTB143XUX uniquely combines high R2/R1 ratio (2.13) for noise-immune cutoff, PNP high-side topology, and AEC-Q101 qualification - making it optimal for automotive and industrial digital output stages where reliability and layout simplicity are non-negotiable.
Availability
PDTB143XUX is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital outputs, and consumer appliance motor drivers requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for PDTB143XUX 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 leading global semiconductor expert focused on essential efficiency technologies, delivering high-performance, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
PDTB143XUX belongs to the PDTB1xxxU series of resistor-equipped transistors, engineered specifically to simplify digital interface design in space-constrained, high-reliability applications - especially where AEC-Q101 compliance and thermal resilience are mandatory.
FAQ
What is the maximum allowable input voltage (VI) for PDTB143XUX?
The absolute maximum input voltage is −30 V (negative-going) and +7 V (positive-going), per Table 6. This rating ensures safe operation during transient events such as load dump or ESD spikes in automotive environments, while the +7 V upper limit prevents forward-biasing the internal R1–base junction beyond safe limits.
Does PDTB143XUX require an external flyback diode when switching inductive loads?
Yes - although the device has −50 V VCEO rating, it does not integrate a flyback diode. When switching relays or solenoids, an external reverse-biased diode (e.g., BAS216) must be placed across the load to clamp inductive kickback and prevent collector-emitter breakdown during turn-off.
How does the R2/R1 ratio of 2.13 affect switching performance?
An R2/R1 ratio of 2.13 provides strong base-emitter shunting, which accelerates turn-off by rapidly discharging base charge. This results in shorter fall time and improved noise immunity versus lower-ratio variants like PDTB143EU (R2/R1 = 1.0), especially in electrically noisy industrial or automotive harness environments.
Can PDTB143XUX be used in parallel for higher current handling?
No - due to inherent parameter variation (hFE, VCE(sat), R1/R2 tolerance), paralleling multiple PDTB143XUX devices is not recommended. Current sharing will be uneven, risking thermal runaway in one unit. For >500 mA loads, select a higher-current RET or discrete solution with forced current balancing.
PDTB143XUX 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:
- PNP - 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:
- 140 MHz
- Power - Max:
- 300 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTB143XUX FAQ
1.How can I place an order for PDTB143XUX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTB143XUX 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 PDTB143XUX reliable?
The price and inventory of PDTB143XUX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTB143XUX is usually 5 days.
3.What payment methods are accepted for PDTB143XUX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTB143XUX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTB143XUX?
PDTB143XUX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTB143XUX 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 PDTB143XUX?
For technical support, including PDTB143XUX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTB143XUX requirements.
6.How does Aetrix verify that PDTB143XUX is sourced from the original manufacturer or authorized distributors?
All PDTB143XUX 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 PDTB143XUX meets industry standards.
7.What is the process for return or replacement of PDTB143XUX?
All PDTB143XUX units undergo pre-shipment inspection (PSI). If there is an issue with PDTB143XUX, 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 PDTB143XUX part is unused and in its original packaging.
Return procedure for PDTB143XUX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTB143XUX Tags
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MUN5211T1G
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PDTC114ET,215
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