My Inquiry
My Account
Nexperia USA Inc. PDTC144TU,115
- Part No.:
- PDTC144TU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC144TU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDTC144TU,115 from Nexperia is an NPN resistor-equipped transistor (RET) with integrated 47 kΩ base bias resistor (R1), open R2 configuration, 50 V VCEO, 100 mA IO, and SOT323 (SC-70) package. It functions as a single-transistor switch in low-power digital interface circuits, eliminating external bias components in microcontroller GPIO-driven loads such as LEDs and small relays.
For engineers reviewing the PDTC144TU,115 datasheet, PDTC144TU,115 pinout, PDTC144TU,115 application, or PDTC144TU,115 equivalent, key selection criteria include built-in bias resistor value, VCEO rating for 3.3/5 V logic compatibility, thermal resistance (625 K/W), SOT323 footprint constraints, and DC current gain (hFE ≥ 100 at 1 mA).
Technical Context
This RET integrates a single NPN silicon transistor with a precision 47 kΩ pull-up base resistor (R1) and no second resistor (R2 = open), enabling direct connection to logic-level drivers without external bias networks. Its architecture reduces PCB area and assembly steps versus discrete BJT + resistor solutions.
Designed for DC switching up to 100 mA with guaranteed VCEsat ≤ 150 mV at IC = 10 mA / IB = 0.5 mA, it operates across −65 °C to +150 °C ambient and supports reflow-only soldering per JEDEC J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Supports reliable switching of 24 V industrial signals or 5 V logic loads with margin. |
| IO (DC) | 100 mA - Drives LEDs, small solenoids, or logic-level MOSFET gates without external amplification. |
| R1 | 47 kΩ - Sets base current for ~100 µA at 5 V, enabling direct MCU GPIO drive with minimal power loss. |
| hFE | ≥100 at IC = 1 mA - Ensures sufficient current gain for predictable saturation in low-current switching. |
| VCEsat | ≤150 mV at IC = 10 mA - Minimizes conduction loss and self-heating in continuous on-state operation. |
| Rth(j-a) | 625 K/W - Requires careful PCB copper area design in SOT323 layout to maintain Tj < 150 °C at full load. |
Pinout & Package
PDTC144TU,115 uses the SOT323 (SC-70) plastic surface-mounted package: 1.0 mm × 0.6 mm × 0.5 mm body, 3-lead, lead pitch 0.65 mm, compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Internal connection to R1 resistor | Input node for logic-level control; R1 pulls base high when un-driven, requiring active-low drive or open-collector source. |
| 2 (Emitter) | Emitter terminal of NPN transistor | Connected to ground reference; forms return path for switched load current. |
| 3 (Collector) | Collector terminal of NPN transistor | Switched output node; connects to load anode (for high-side switching) or cathode (for low-side switching). |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 47 kΩ base bias resistor | Eliminates need for external pull-up resistor, reducing BOM count by one passive component per switch channel. |
| SOT323 (SC-70) footprint | Enables high-density routing in space-constrained applications like wearables and IoT sensor nodes. |
| VCEO = 50 V | Provides 10× safety margin over 5 V logic rails and compatibility with 24 V industrial I/O interfaces. |
| VCEsat ≤ 150 mV | Reduces power dissipation to <1.5 mW at 10 mA, minimizing thermal impact in thermally isolated layouts. |
Applications
| LED Indicator Driver | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving status LEDs from 3.3 V or 5 V MCU GPIO pins with current limiting via series resistor. IC Role / Device Role / Timing Role: Low-side switch controlling LED cathode path to ground. Use Value: Eliminates external base resistor; enables direct GPIO connection with predictable turn-on behavior and <150 mV dropout. |
Use Scenario: Extending limited GPIO count to drive multiple peripheral enable lines (e.g., sensors, displays). IC Role / Device Role / Timing Role: Digital buffer/level shifter translating MCU logic levels to higher-current enable signals. Use Value: Reduces PCB area vs. discrete BJT+resistor; supports fast edge rates due to low Cc (2.5 pF) and stable hFE. |
| Low-Power Relay Interface | Logic-Level MOSFET Gate Driver |
|
Use Scenario: Activating 5 V or 12 V coil relays in battery-powered controllers where quiescent current must be minimized. IC Role / Device Role / Timing Role: Current amplifier stage between MCU output and relay coil. Use Value: Built-in R1 ensures defined off-state (no floating base); 100 mA rating covers typical signal relay coils (≤70 mA). |
Use Scenario: Driving the gate of logic-level N-channel MOSFETs (e.g., Si2302) in load-switching circuits. IC Role / Device Role / Timing Role: Voltage-controlled current source charging/discharging MOSFET gate capacitance. Use Value: Low VCEsat minimizes voltage drop during gate charging; 2.5 pF collector capacitance limits Miller effect in switching transitions. |
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 |
|---|---|---|---|
| PDTA144TU,115 | PNP complement with same R1 = 47 kΩ, SOT323 package, but inverted polarity (emitter-high switching). | Used for high-side switching where load connects to VCC and emitter drives load anode. | Select PDTA144TU,115 only when sourcing current from supply rail is required; not interchangeable with PDTC144TU,115 in low-side configurations. |
| PDTC124TU,115 | Same SOT323 package but R1 = 22 kΩ, yielding higher base current (~227 µA at 5 V) and faster switching at cost of higher input power. | Better suited for driving heavier loads (>50 mA) or improving turn-on speed in timing-critical interfaces. | Choose PDTC124TU,115 when faster response or higher IC margin is needed; avoid if MCU GPIO current budget is tight. |
Compared with PDTA144TU,115 and PDTC124TU,115, PDTC144TU,115 offers optimal balance of low input current, adequate drive strength, and thermal performance in compact SOT323 layouts-making it preferred for general-purpose low-power switching where efficiency and board space are prioritized.
Availability
PDTC144TU,115 is available at Aetrix Electronics and suitable for LED indicator systems, microcontroller peripheral interfaces, and low-power relay control requiring stable component supply and long-term manufacturability.
Supply support for PDTC144TU,115 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 leader in high-volume production of discrete semiconductors, acquired from NXP's Standard Products division in 2017, with manufacturing sites in Asia and Europe.
PDTC144TU,115 belongs to the PDTC144T series of resistor-equipped transistors designed specifically for simplifying digital interface and switching circuits in consumer, computing, and industrial electronics.
FAQ
What is the function of the open R2 terminal in PDTC144TU,115?
The R2 terminal is internally left unconnected (open), meaning only R1 (47 kΩ) is present between base and input pin. This configuration provides fixed-base biasing without feedback or emitter degeneration, making it ideal for simple on/off switching rather than linear amplification or precision current regulation.
Can PDTC144TU,115 be used in analog amplifier configurations?
No-PDTC144TU,115 is optimized for digital switching, not linear operation. Its fixed R1 and lack of R2 prevent stable DC bias point setting for amplification, and its hFE is specified only at IC = 1 mA, not across a wide current range required for analog gain stability.
Is PDTC144TU,115 RoHS compliant and halogen-free?
Yes-Nexperia confirms PDTC144TU,115 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, with material declarations available in the official product change notification PCN-17001 issued in Q1 2017.
What is the maximum recommended PCB copper area for thermal relief with PDTC144TU,115 in SOT323?
For continuous 100 mA operation at 25 °C ambient, Nexperia recommends ≥25 mm² of 35 µm copper connected to the emitter pad (Pin 2) using ≥2 thermal vias (0.3 mm diameter) to internal ground planes to maintain junction temperature below 150 °C.
PDTC144TU,115 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):
- 47 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
PDTC144TU,115 FAQ
1.How can I place an order for PDTC144TU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144TU,115 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 PDTC144TU,115 reliable?
The price and inventory of PDTC144TU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144TU,115 is usually 5 days.
3.What payment methods are accepted for PDTC144TU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144TU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144TU,115?
PDTC144TU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144TU,115 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 PDTC144TU,115?
For technical support, including PDTC144TU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144TU,115 requirements.
6.How does Aetrix verify that PDTC144TU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC144TU,115 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 PDTC144TU,115 meets industry standards.
7.What is the process for return or replacement of PDTC144TU,115?
All PDTC144TU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144TU,115, 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 PDTC144TU,115 part is unused and in its original packaging.
Return procedure for PDTC144TU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144TU,115 Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
