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Nexperia USA Inc. PDTC143ZU-QAX
- Part No.:
- PDTC143ZU-QAX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC143ZU-QAX.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,513
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Product details
Overview
PDTC143ZU-QAX from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, featuring integrated bias resistors R1 = 4.7 kΩ and R2 = 47 kΩ, 50 V VCEO, 100 mA IO, and optimized for automotive digital switching applications such as IC input control and load switching.
For engineers reviewing the PDTC143ZU-QAX datasheet, PDTC143ZU-QAX pinout, PDTC143ZU-QAX application, or PDTC143ZU-QAX equivalent, this page delivers verified electrical parameters, validated pin functions, automotive-grade thermal derating data, and direct alternatives for cost-sensitive digital interface designs.
Technical Context
This RET integrates a monolithic NPN transistor with two precision on-die bias resistors-R1 connected between base and input, R2 from base to emitter-enabling single-resistor drive logic-level interfacing without external components. It operates with VI(on) = 0.9–1.3 V at IC = 5 mA and VI(off) = 0.5–0.6 V at IC = 100 µA, ensuring robust noise immunity in 3.3 V/5 V digital systems.
The device exhibits hFE ≥ 100 at VCE = 5 V, IC = 10 mA, and maintains VCE(sat) ≤ 100 mV under IC = 5 mA / IB = 0.25 mA conditions. Its fT = 230 MHz (typ.) supports high-speed switching up to ~10 MHz in buffered digital paths, while Cc = 2.5 pF minimizes capacitive loading on driving nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin. |
| IO | 100 mA - Continuous output current rating; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 4.7 kΩ (typ.) - Input bias resistor value; sets base current for logic-level turn-on with standard CMOS/TTL outputs. |
| R2/R1 ratio | 10 (typ.) - Ensures stable saturation and prevents unintended conduction due to leakage or noise. |
| VCE(sat) | ≤100 mV at IC = 5 mA - Low saturation voltage reduces power loss and heat generation in switching mode. |
| fT | 230 MHz (typ.) - Transition frequency of internal transistor; supports fast edge rates in digital signal buffering. |
| Ptot | 200 mW at Tamb ≤ 25 °C - Total power dissipation limit on FR4 PCB; requires derating above 25 °C per Fig. 1. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 3-pin, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body, designed for high-density automotive PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base node) | Connected internally to R1; accepts logic-level drive signals directly from MCU GPIO or buffer outputs. |
| 2 | Ground (emitter) | Emitter terminal tied to system ground; provides return path for load current and R2 bias network. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode, relay coil) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in R1 + R2 bias network | Eliminates need for two external resistors, reducing BOM count and PCB area by ≥2 components per switch node. |
| AEC-Q101 qualification | Validated for automotive temperature range (−40 °C to +150 °C junction), vibration, and humidity stress per discrete semiconductor standard. |
| Low VI(on) threshold | 0.9–1.3 V enables reliable turn-on from 1.8 V and 3.3 V logic families without level-shifting circuitry. |
| Controlled VI(off) window | 0.5–0.6 V off-state input voltage ensures noise margins >0.4 V against typical automotive EMI environments. |
| Thermal resistance Rth(j-a) | 625 K/W on FR4 PCB - enables operation up to 125 °C ambient when power dissipation remains below derated limit. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Output |
|---|---|
|
Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: Digital load switch with integrated biasing, replacing discrete BJT + two resistors. Use Value: Reduces component count by 2 per channel and eliminates resistor placement errors during SMT assembly. |
Use Scenario: Driving optocoupler inputs and small DC loads in programmable logic controller output stages. IC Role / Device Role / Timing Role: Level-translating digital buffer with guaranteed saturation at 24 V supply. Use Value: Enables direct connection to 3.3 V FPGA I/O banks while delivering 100 mA sink capability into 24 V loads. |
| Automotive Infotainment GPIO Expander | Cost-Sensitive Consumer Appliance Control |
|
Use Scenario: Controlling backlight dimming circuits and sensor enable lines in head unit subsystems. IC Role / Device Role / Timing Role: Low-power digital interface switch with <100 ns propagation delay (derived from fT = 230 MHz). Use Value: Supports PWM frequencies up to 10 kHz without distortion, preserving brightness resolution in LED drivers. |
Use Scenario: Replacing BC847-Q series transistors in white goods control boards for motor enable and valve actuation. IC Role / Device Role / Timing Role: Drop-in RET alternative with identical SOT323 footprint and enhanced thermal robustness. Use Value: Eliminates external bias resistors while maintaining compatibility with legacy layout and test fixtures. |
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 |
|---|---|---|---|
| PDTC124E-Q | R1 = 22 kΩ, R2 = 47 kΩ → higher input impedance, lower base current (≈230 µA vs 640 µA @ 3.3 V) | Better suited for ultra-low-power microcontroller GPIOs with limited drive strength | Select when driving from weak-sourcing pins (e.g., some ARM Cortex-M0+ I/O) where base current must stay <300 µA |
| PDTC114Y-Q | R1 = 10 kΩ, R2 = 100 kΩ → R2/R1 = 10 same, but higher absolute R values reduce power consumption in standby | Lower quiescent current improves battery life in always-on automotive modules | Prefer for sleep-mode-critical applications where VI(off) leakage must be minimized across temperature |
Compared with PDTC124E-Q and PDTC114Y-Q, the PDTC143ZU-QAX offers higher base drive (640 µA @ 3.3 V), faster switching due to lower R1, and tighter VI(on)/VI(off) windows-making it optimal for general-purpose 3.3 V/5 V digital switching where speed and noise margin outweigh ultra-low standby current needs.
Availability
PDTC143ZU-QAX is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, infotainment subsystems, and consumer appliance control requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTC143ZU-QAX 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.
PDTC143ZU-QAX belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) product line, engineered specifically to simplify digital interface design in harsh-environment automotive ECUs and industrial controls.
FAQ
What is the maximum continuous collector current for PDTC143ZU-QAX?
The PDTC143ZU-QAX is rated for 100 mA continuous output current (IO) under ambient temperature ≤25 °C with proper PCB thermal relief. At 85 °C ambient, derating reduces usable current to approximately 60 mA based on its 625 K/W junction-to-ambient thermal resistance and 200 mW Ptot limit.
Can PDTC143ZU-QAX replace BC847B in a 5 V digital switch application?
No-BC847B is a bare NPN transistor requiring external bias resistors, whereas PDTC143ZU-QAX integrates R1 = 4.7 kΩ and R2 = 47 kΩ. Direct replacement is possible only if the existing BC847B circuit uses identical resistor values and layout allows SOT323 footprint; otherwise, redesign is needed to remove external resistors and verify VI(on)/VI(off) compatibility.
Is PDTC143ZU-QAX suitable for PWM-driven LED dimming?
Yes-its fT = 230 MHz and VCE(sat) ≤ 100 mV support clean switching up to 10 kHz PWM frequencies. At 100 mA load, power dissipation stays below 10 mW in saturation, minimizing self-heating and duty-cycle-dependent thermal drift in automotive interior lighting applications.
What does the '-Q' suffix indicate in PDTC143ZU-QAX?
The '-Q' suffix denotes AEC-Q101 qualification-confirming full stress testing per Automotive Electronics Council standards for temperature cycling, humidity, mechanical shock, and reliability. The 'AX' suffix indicates tape-and-reel packaging per standard SOT323 carrier specifications, not a functional variant.
PDTC143ZU-QAX 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):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 4.7 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 100mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- 230 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC143ZU-QAX FAQ
1.How can I place an order for PDTC143ZU-QAX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143ZU-QAX 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 PDTC143ZU-QAX reliable?
The price and inventory of PDTC143ZU-QAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143ZU-QAX is usually 5 days.
3.What payment methods are accepted for PDTC143ZU-QAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143ZU-QAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143ZU-QAX?
PDTC143ZU-QAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143ZU-QAX 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 PDTC143ZU-QAX?
For technical support, including PDTC143ZU-QAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143ZU-QAX requirements.
6.How does Aetrix verify that PDTC143ZU-QAX is sourced from the original manufacturer or authorized distributors?
All PDTC143ZU-QAX 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 PDTC143ZU-QAX meets industry standards.
7.What is the process for return or replacement of PDTC143ZU-QAX?
All PDTC143ZU-QAX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143ZU-QAX, 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 PDTC143ZU-QAX part is unused and in its original packaging.
Return procedure for PDTC143ZU-QAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143ZU-QAX Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
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DTC114EKAT146
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DDTD113ZC-7-F
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DRDNB16W-7
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PDTC114ET,215
Nexperia USA Inc.
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PDTC143ZT,215
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PDTC143ET,215
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PDTC143XT,215
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MMUN2211LT1G
onsemi
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