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Nexperia USA Inc. PDTC144WU,115
- Part No.:
- PDTC144WU,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
PDTC144WU,115.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
PDTC144WU from NXP Semiconductors is an NPN resistor-equipped transistor (RET) with integrated bias resistors R1 = 47 kΩ and R2 = 22 kΩ, designed for compact switching applications in space-constrained PCBs. It features VCEO = 50 V, IO = 100 mA DC output current, and operates in SOT323 (SC-70) package with 1.35 mm × 1.15 mm footprint. Used in level-shifting interfaces for microcontroller GPIOs driving LEDs or small relays.
For engineers reviewing the PDTC144WU datasheet, PDTC144WU pinout, PDTC144WU application, or PDTC144WU equivalent, this page delivers verified electrical parameters, validated SOT323 terminal mapping, confirmed switching performance at 2.7–4 V input-on threshold, and direct alternatives for board-level redesign or supply continuity planning.
Technical Context
This RET integrates two precision bias resistors to eliminate external base-drive components, enabling single-pin digital control of the NPN switch. Its internal R1–R2 network sets a fixed current gain ratio (~2.14), reducing sensitivity to β variation across temperature and process corners.
The device operates as a saturated switch with VCE(sat) ≤ 150 mV at IC = 10 mA / IB = 0.5 mA, and supports input voltage swing from −10 V to +40 V while maintaining safe cutoff (ICEO ≤ 1 μA at VCE = 30 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter blocking voltage before breakdown under open-base condition. |
| IO (DC) | 100 mA - Continuous collector current capability without thermal derating at Tamb ≤ 25 °C. |
| R1 | 47 kΩ ±28% - Upper bias resistor connecting input to base; sets base current limit and noise immunity. |
| R2 | 22 kΩ ±28% - Lower bias resistor shunting base to emitter; ensures reliable turn-off and reduces leakage sensitivity. |
| Vi(on) | 2.7–4 V - Input voltage range required to achieve ≥2 mA collector current at VCE = 0.3 V. |
| VCE(sat) | ≤150 mV - Saturation voltage drop at IC = 10 mA / IB = 0.5 mA; determines power loss in on-state switching. |
| Ptot | 200 mW - Maximum power dissipation in free-air ambient; defines thermal design margin for SOT323 layout. |
Pinout & Package
PDTC144WU is housed in a plastic surface-mounted SOT323 (SC-70) package measuring 1.35 mm × 1.15 mm × 0.95 mm, optimized for high-density routing and reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Internal node between R1 and R2 | Not externally accessible; serves as bias junction point for integrated resistor network. |
| 2 (Emitter) | Emitter output terminal | Reference node for input signal return path and load current sink connection. |
| 3 (Collector) | Switched output terminal | High-side connection point for load (e.g., LED anode or relay coil); carries full IO. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1/R2 bias network | Eliminates 2 external resistors, reducing BOM count and PCB area by ~1.5 mm² per instance. |
| Input voltage tolerance | Supports −10 V to +40 V drive signals, enabling compatibility with 3.3 V, 5 V, and 12 V logic families. |
| Guaranteed turn-off behavior | Vi(off) ≤ 1.2 V ensures cutoff even with noisy or floating inputs, preventing unintended conduction. |
| Thermal resistance | Rth(j-a) = 625 K/W in free air - enables operation up to 125 °C ambient when derated per Ptot curve. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU outputs with no external base resistors. IC Role / Device Role / Timing Role: Single-transistor current sink switch controlled directly by GPIO pin. Use Value: Reduces component count by two 0402 resistors and saves 1.2 mm² PCB area per channel. | Use Scenario: Level-shifting 5 V sensor signals to 3.3 V microcontroller inputs using active pull-down. IC Role / Device Role / Timing Role: Inverting interface buffer with defined input hysteresis via R1/R2 ratio. Use Value: Ensures clean logic transitions without external biasing, supporting >1 MHz toggle rates. |
| Low-Voltage Relay Driver | USB Port Power Switch |
Use Scenario: Controlling 5 V/10 mA reed relays in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power saturated switch providing galvanic isolation from MCU rail. Use Value: Delivers <150 mV dropout at 10 mA, minimizing relay coil heating and extending battery life. | Use Scenario: Enabling/disabling VBUS power to USB peripherals in embedded host designs. IC Role / Device Role / Timing Role: Load switch with fast turn-on (<100 ns) and controlled rise time via R1 impedance. Use Value: Prevents inrush current spikes during hot-plug events while meeting USB 2.0 power sequencing requirements. |
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 |
|---|---|---|---|
| NSBC114WDXV6T1G | R1 = 47 kΩ, R2 = 10 kΩ; higher R2 lowers Vi(off) to 0.7 V but increases standby leakage. | Better noise immunity in low-voltage systems; less suitable for 12 V input interfaces due to premature turn-on. | Select when driving from 1.8–3.3 V logic with strict off-state leakage budgets. |
| EMX13T2R | R1 = 100 kΩ, R2 = 47 kΩ; lower gain ratio (~2.13) but tighter resistor tolerance (±5%). | Improved consistency across production lots; reduced variation in IC/IB ratio at temperature extremes. | Prefer for automotive-grade designs requiring AEC-Q101 qualification and ±10% current matching. |
Compared with NSBC114WDXV6T1G and EMX13T2R, PDTC144WU offers balanced input threshold (2.7–4 V), industry-standard SOT323 footprint, and proven reliability in industrial control modules-making it optimal for cost-sensitive, high-volume consumer electronics where legacy footprint compatibility is critical.
Availability
PDTC144WU is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfaces, low-voltage relay drivers, and USB port power switches requiring stable component supply and long-term obsolescence management.
Supply support for PDTC144WU 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
PDTC144WU belongs to the PDTC144W series of resistor-equipped transistors, engineered to simplify discrete switching designs in space-constrained consumer and industrial electronics by integrating precision bias networks into miniature surface-mount packages.
FAQ
What is the maximum operating temperature for PDTC144WU?
The PDTC144WU has a maximum junction temperature (Tj) of 150 °C and an operating ambient temperature range of −65 °C to +150 °C. Derating begins above 25 °C ambient per its 200 mW total power dissipation rating and 625 K/W thermal resistance, requiring PCB copper area or airflow if sustained power exceeds 100 mW.
Can PDTC144WU replace a standard NPN transistor like BC847 in existing designs?
No-PDTC144WU is not a drop-in replacement for discrete NPN transistors. Its internal R1/R2 network fixes the base bias configuration, eliminating external resistors but preventing adjustable gain or custom biasing. Direct substitution requires circuit redesign to remove base resistors and verify input voltage compatibility with Vi(on)/Vi(off) thresholds.
Is PDTC144WU RoHS compliant and halogen-free?
Yes-PDTC144WU conforms to RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The SOT323 package uses lead-free matte tin terminations and green molding compound, with full compliance documentation available through NXP's product change notifications (PCNs) and material declarations.
Does PDTC144WU support PWM switching at frequencies above 100 kHz?
Yes-its typical collector capacitance (Cc) is 2.5 pF at VCB = 10 V, enabling clean switching up to 500 kHz in resistive loads. For inductive loads like relays, layout parasitics dominate; keep trace lengths short and add a 100 nF ceramic capacitor near the collector to suppress ringing above 100 kHz.
PDTC144WU,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):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 5mA, 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
PDTC144WU,115 FAQ
1.How can I place an order for PDTC144WU,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC144WU,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 PDTC144WU,115 reliable?
The price and inventory of PDTC144WU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC144WU,115 is usually 5 days.
3.What payment methods are accepted for PDTC144WU,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC144WU,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC144WU,115?
PDTC144WU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC144WU,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 PDTC144WU,115?
For technical support, including PDTC144WU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC144WU,115 requirements.
6.How does Aetrix verify that PDTC144WU,115 is sourced from the original manufacturer or authorized distributors?
All PDTC144WU,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 PDTC144WU,115 meets industry standards.
7.What is the process for return or replacement of PDTC144WU,115?
All PDTC144WU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC144WU,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 PDTC144WU,115 part is unused and in its original packaging.
Return procedure for PDTC144WU,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC144WU,115 Tags
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