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Nexperia USA Inc. PDTD123EUF
- Part No.:
- PDTD123EUF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTD123EUF.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,744
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Product details
Overview
PDTD123EUF from Nexperia is a 500 mA, 50 V NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, integrating 2.2 kΩ input bias resistor (R1) and 2.2 kΩ base-emitter resistor (R2) with ±10 % ratio tolerance. It functions as a single-chip digital switch for IC-driven loads in space-constrained automotive and industrial control circuits.
For engineers reviewing the PDTD123EUF datasheet, PDTD123EUF pinout, PDTD123EUF application, or PDTD123EUF equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C junction temperature rating, built-in resistor network eliminating external bias components, and compatibility with 3.3 V/5 V logic-level drive.
Technical Context
This RET integrates an NPN transistor with two monolithically embedded thin-film resistors: R1 (2.2 kΩ) between input and base, and R2 (2.2 kΩ) between base and emitter. The 1:1 R2/R1 ratio enables predictable saturation behavior under standard logic drive conditions.
It operates as a digitally controlled switch with guaranteed VI(on) ≤ 2.0 V at IC = 20 mA and VI(off) ≥ 0.6 V at IC = 100 µA, supporting direct interfacing to microcontroller GPIOs without level-shifting or external pull-down networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Supports switching of 24 V DC loads with 2× safety margin in industrial control. |
| IO | 500 mA - Drives solenoids, relays, or LED arrays without external current amplification. |
| R1 / R2 | 2.2 kΩ / 2.2 kΩ - Enables self-biasing with precise 1.0 ±0.1 resistor ratio for stable turn-on/turn-off thresholds. |
| VCE(sat) | ≤ 100 mV at IC = 50 mA - Minimizes conduction loss and thermal rise in high-duty-cycle switching. |
| Tj(max) | 175 °C - Qualified for under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 | Qualified - Meets stress-test requirements for discrete semiconductors in automotive applications. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.3 mm × 1.8 mm footprint, 0.95 mm height, 3-terminal leadframe with gull-wing geometry optimized for reflow soldering on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base via R1) | Logic-level signal entry point; internal R1 limits base current and eliminates need for external series resistor. |
| 2 | GND (emitter) | Reference node for both load return path and internal R2 connection; must be low-impedance ground plane. |
| 3 | Output (collector) | Switched high-side or low-side load connection; rated for 50 V and 500 mA continuous DC current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic R1 + R2 eliminates 2 external resistors, reducing BOM count and PCB area by >30 % vs. discrete BJT + bias solution. |
| ±10 % R2/R1 tolerance | Ensures consistent VI(on)/VI(off) thresholds across production lots, enabling reliable logic-level interfacing without calibration. |
| 175 °C junction rating | Permits operation in engine control units, powertrain modules, and industrial motor drives without derating at ambient up to 125 °C. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, HTRB, and ESD (HBM ≥ 8 kV), supporting ASIL-B system integration. |
Applications
| Automotive Body Control Module | Industrial PLC Output Stage |
|---|---|
Use Scenario: Driving door lock actuators and interior lighting from 3.3 V MCU GPIOs in compact BCM PCBs. IC Role / Device Role: Digital load switch replacing BC817 with integrated biasing. Use Value: Eliminates two 0402 resistors per channel, reducing assembly cost and improving thermal stability over temperature. |
Use Scenario: Switching 24 V solenoid valves in DIN-rail mounted programmable logic controllers. IC Role / Device Role: Low-side driver stage interfaced to isolated digital output ASICs. Use Value: Withstands 125 °C ambient and delivers 500 mA without heatsink, enabling fanless enclosure design. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Fan Control |
Use Scenario: Controlling small DC brush motors in smart washing machine control boards using 5 V logic. IC Role / Device Role: Logic-compatible interface between MCU and motor H-bridge enable lines. Use Value: Guaranteed VI(on) ≤ 2.0 V ensures full saturation even with 5 % supply droop, preventing partial turn-on heating. |
Use Scenario: Regulating cooling fans in portable ultrasound systems requiring low EMI and high reliability. IC Role / Device Role: PWM-controlled fan driver with fail-safe off-state leakage < 0.5 µA. Use Value: ICEO ≤ 0.5 µA prevents unintended fan rotation during standby, extending battery life. |
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 BJT requiring external 10 kΩ base resistor; no integrated R2; hFE = 250–630 (wider spread). | Lacks built-in bias network; requires additional PCB area and layout validation for noise immunity. | Select when higher hFE or lower VCE(sat) (< 70 mV) is required and board space allows external biasing. |
| PDTB123EU | PNP complement with identical R1/R2 values; same SOT323 package; VECO = 50 V, IO = −500 mA. | Used for high-side switching or complementary push-pull stages; not interchangeable in NPN topology. | Select only for PNP-side switching in dual-transistor configurations where polarity reversal is needed. |
Compared with BC807-40, PDTD123EUF reduces component count and improves consistency but trades off some hFE range; versus PDTB123EU, it provides NPN functionality essential for low-side load control without polarity inversion.
Availability
PDTD123EUF is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC outputs, and medical equipment fan control requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTD123EUF 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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
PDTD123EUF belongs to the PDTD1xxxU series of resistor-equipped transistors designed specifically for space-constrained, high-temperature digital switching in automotive and industrial systems.
FAQ
What is the maximum continuous collector current for PDTD123EUF?
The absolute maximum continuous collector current is 500 mA at Tamb ≤ 25 °C on a 4-layer FR4 PCB. Derating applies above 25 °C: at 100 °C ambient, maximum usable current drops to approximately 350 mA based on thermal resistance of 353 K/W and 300 mW total power dissipation limit.
Can PDTD123EUF replace a standard BC817 transistor directly?
No direct drop-in replacement: PDTD123EUF has integrated bias resistors and fixed gain characteristics, while BC817 requires external base resistors and offers wider hFE range (100–630). Circuit redesign is needed to remove external bias components and verify VI(on)/VI(off) compatibility with driving logic levels.
Is the R2/R1 resistor ratio truly matched at 1.0 for PDTD123EUF?
Yes - datasheet Table 8 specifies R2/R1 = 0.9 to 1.1 (±10 %), with typical value 1.0. This tight matching ensures symmetrical input threshold behavior, critical for consistent logic-level switching across temperature and process variation.
Does PDTD123EUF support PWM switching at frequencies above 10 kHz?
Yes - with fT = 225 MHz and Cc = 7 pF, it supports clean switching up to at least 500 kHz. However, practical PWM performance depends on load inductance and PCB layout; for 24 V inductive loads, snubber design and gate drive strength remain key considerations.
PDTD123EUF 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
PDTD123EUF FAQ
1.How can I place an order for PDTD123EUF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTD123EUF 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 PDTD123EUF reliable?
The price and inventory of PDTD123EUF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTD123EUF is usually 5 days.
3.What payment methods are accepted for PDTD123EUF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTD123EUF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTD123EUF?
PDTD123EUF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTD123EUF 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 PDTD123EUF?
For technical support, including PDTD123EUF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTD123EUF requirements.
6.How does Aetrix verify that PDTD123EUF is sourced from the original manufacturer or authorized distributors?
All PDTD123EUF 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 PDTD123EUF meets industry standards.
7.What is the process for return or replacement of PDTD123EUF?
All PDTD123EUF units undergo pre-shipment inspection (PSI). If there is an issue with PDTD123EUF, 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 PDTD123EUF part is unused and in its original packaging.
Return procedure for PDTD123EUF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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