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Nexperia USA Inc. PDTD123EUX
- Part No.:
- PDTD123EUX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTD123EUX.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,031
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Product details
Overview
PDTD123EUX from Nexperia is an NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching applications with 50 V VCEO, 500 mA IO, and built-in bias resistors R1 = 2.2 kΩ and R2 = 2.2 kΩ. It simplifies BJT-based logic interface circuits in automotive control modules, LED drivers, and microcontroller I/O load switching.
For engineers reviewing the PDTD123EUX datasheet, PDTD123EUX pinout, PDTD123EUX application, or PDTD123EUX equivalent, key selection criteria include its ±10% R2/R1 ratio tolerance, AEC-Q101 qualification, 175 °C maximum junction temperature, and guaranteed VCE(sat) ≤ 100 mV at IC = 50 mA / IB = 2.5 mA.
Technical Context
This RET integrates a monolithic NPN transistor with two precision on-die bias resistors-R1 connected between input (base) and collector, and R2 between base and emitter-enabling single-resistor drive from CMOS/TTL logic without external bias network. Its internal structure eliminates base current dependency on external components, reducing layout sensitivity.
The device operates as a saturated switch with guaranteed hFE ≥ 40 at IC = 50 mA and VCE = 5 V, supports VI(on) ≤ 2.0 V and VI(off) ≥ 0.6 V across −40 °C to +125 °C, and maintains stable performance up to Tj = 175 °C per AEC-Q101 stress testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; enables use in 24 V automotive and industrial supply rails. |
| IO | 500 mA - Continuous output current rating; supports driving medium-power loads like relays, small solenoids, and LED strings. |
| R1 | 2.2 kΩ - Input bias resistor value; sets base current when driven from logic-level sources, enabling direct MCU GPIO interfacing. |
| R2 | 2.2 kΩ - Base-emitter resistor value; ensures reliable turn-off by shunting leakage current and improving noise immunity. |
| VCE(sat) | ≤ 100 mV at IC = 50 mA / IB = 2.5 mA - Low saturation voltage minimizes power loss and self-heating during switching. |
| hFE | ≥ 40 at VCE = 5 V, IC = 50 mA - Guaranteed DC current gain ensures robust saturation under worst-case temperature and process variation. |
| Tj(max) | 175 °C - Junction temperature limit validated per AEC-Q101; supports operation in under-hood automotive environments. |
Pinout & Package
Package: SOT323 (SC-70), surface-mount plastic package with 3 leads, footprint dimensions 2.2 mm × 1.35 mm × 0.95 mm (L × W × H), optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Logic-level input node connected internally to R1 and R2; accepts 0–12 V drive signals without external pull-up/down. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; serves as common return path for load current and bias network. |
| 3 | Output (collector) | Switched output node connected to load; sinks current from VCC-referenced loads (e.g., LEDs, relays). |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | Monolithic R1 = 2.2 kΩ and R2 = 2.2 kΩ eliminate discrete bias components, reducing BOM count and PCB area by ≥2 parts per switch. |
| AEC-Q101 qualification | Qualified for automotive-grade reliability including HTOL, TC, ESD, and mechanical stress tests-validates suitability for engine control, body electronics, and ADAS subsystems. |
| High-temperature operation | Rated for continuous operation up to Tj = 175 °C, enabling placement near heat sources (e.g., power converters, motor drivers) without derating. |
| ±10 % R2/R1 tolerance | Ensures consistent turn-on/turn-off thresholds across production lots, critical for deterministic timing in digital control interfaces. |
| Low VCE(sat) | ≤100 mV at rated current guarantees <10 mW conduction loss at 100 mA, supporting energy-efficient designs in battery-powered systems. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Output |
|---|---|
Use Scenario: Driving 12 V indicator LEDs and small solenoid valves in door latch, mirror, and lighting control units. IC Role / Device Role: Single-transistor load switch replacing discrete BJT + two resistors; receives 3.3 V/5 V GPIO commands from microcontroller. Use Value: Reduces component count per channel by 2 parts, improves thermal margin via 175 °C rating, and meets AEC-Q101 requirements for vehicle longevity. |
Use Scenario: Isolating and switching 24 V DC field devices (sensors, actuators) in DIN-rail mounted programmable logic controllers. IC Role / Device Role: Logic-level compatible output stage translating 3.3 V FPGA or ARM core signals to 24 V load drive capability. Use Value: Eliminates level-shifting ICs or optocouplers; achieves <100 mV saturation drop for minimal power dissipation in high-channel-count modules. |
| Consumer Appliance Motor Interface | Medical Diagnostic Equipment I/O |
Use Scenario: Controlling small DC brush motors and buzzer drivers in smart home appliances (e.g., washing machine dispensers, HVAC dampers). IC Role / Device Role: Digitally controlled power switch interfacing MCU GPIO directly to inductive loads with integrated flyback protection support. Use Value: Built-in R1/R2 ensure clean turn-off even with high-impedance MCU pins; 500 mA rating covers typical appliance actuator currents. |
Use Scenario: Enabling/disabling signal paths and sensor biasing in portable diagnostic tools requiring low-noise, reliable digital switching. IC Role / Device Role: Precision-controlled enable switch for analog front-end subcircuits, where predictable VI(on)/VI(off) thresholds prevent false triggering. Use Value: Tight ±10 % R2/R1 ratio ensures repeatable switching thresholds across temperature (−40 °C to +125 °C), critical for clinical accuracy. |
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 |
|---|---|---|---|
| BC807-40 | Discrete NPN BJT without integrated bias resistors; requires external RB and RBE network. | Higher BOM count and layout complexity; less suitable for space-constrained or high-reliability automotive designs. | Select when fine-tuned biasing or higher hFE (>100) is required, and board area allows for two extra resistors. |
| PDTB123EU | PNP complement with identical R1/R2 values (2.2 kΩ/2.2 kΩ), same SOT323 package, and matching AEC-Q101 qualification. | Used for high-side switching or complementary driver stages; not interchangeable in NPN-configured circuits. | Choose for complementary pair design in H-bridge or push-pull outputs where matched RET characteristics are essential. |
Compared with BC807-40, PDTD123EUX reduces component count and layout risk but trades off bias flexibility; versus PDTB123EU, it provides NPN topology for low-side switching while maintaining identical thermal and automotive qualifications.
Availability
PDTD123EUX is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC outputs, and medical diagnostic equipment requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for PDTD123EUX 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 high-volume, high-reliability standard products, with leadership in logic, discretes, and MOSFETs for automotive, industrial, and consumer markets.
PDTD123EUX belongs to the PDTD1xxxU series of resistor-equipped transistors engineered specifically for simplified digital switching in space- and reliability-critical applications, especially where AEC-Q101 qualification and SC-70 miniaturization are mandatory.
FAQ
What is the maximum ambient temperature for continuous operation?
PDTD123EUX supports continuous operation up to +125 °C ambient temperature when mounted on a 4-layer FR4 PCB, based on its 425 mW power dissipation rating and 353 K/W thermal resistance. Derating applies above this point per the published power derating curve.
Can PDTD123EUX replace a standard BJT like BC817 in existing designs?
Yes, with layout modification: remove external base and base-emitter resistors, connect MCU GPIO directly to Pin 1 (input), load to Pin 3 (collector), and ground Pin 2 (emitter). Verify VI(on)/VI(off) thresholds match your logic family's output swing and noise margins.
Is the R2/R1 ratio truly 1.0 for PDTD123EUX?
Yes-the datasheet specifies R2/R1 = 0.9 to 1.1 (±10 %), with typical value 1.0. This 1:1 ratio ensures symmetrical turn-on and turn-off behavior, making it ideal for applications requiring balanced switching thresholds.
Does PDTD123EUX require a flyback diode when switching inductive loads?
Yes-although the device itself does not integrate flyback protection, its 50 V VCEO rating assumes external clamping. Always place a fast recovery diode (e.g., BAS21) cathode-to-collector, anode-to-emitter when driving relays or solenoids to suppress inductive kickback.
PDTD123EUX 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):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 2.2 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 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
PDTD123EUX FAQ
1.How can I place an order for PDTD123EUX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTD123EUX 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 PDTD123EUX reliable?
The price and inventory of PDTD123EUX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTD123EUX is usually 5 days.
3.What payment methods are accepted for PDTD123EUX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTD123EUX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTD123EUX?
PDTD123EUX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTD123EUX 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 PDTD123EUX?
For technical support, including PDTD123EUX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTD123EUX requirements.
6.How does Aetrix verify that PDTD123EUX is sourced from the original manufacturer or authorized distributors?
All PDTD123EUX 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 PDTD123EUX meets industry standards.
7.What is the process for return or replacement of PDTD123EUX?
All PDTD123EUX units undergo pre-shipment inspection (PSI). If there is an issue with PDTD123EUX, 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 PDTD123EUX part is unused and in its original packaging.
Return procedure for PDTD123EUX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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