PDTC144WU Nexperia Integrated Circuit (SOT23 (3-Pin)) In Stock
Nexperia PDTC144WU is an NPN digital transistor with a built-in 47 kΩ base resistor and 0.47 resistor ratio, rated at 100 mA collector current and 50 V collector-emitter voltage. Housed in a compact 3-pin UMT (SOT-323) package with minimum hFE of 60, it simplifies switching design by eliminating external bias components. Available from stock with worldwide shipping.
- Manufacturer
- Nexperia
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- PDTC144WU Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.0447(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PDTC144WU?
- NPN digital transistor with integrated 47 kΩ bias resistor and 0.47 R1/R2 ratio, eliminating external base network components
- 100 mA collector current and 50 V VCEO rating cover a wide range of low-power signal switching applications
- Minimum hFE of 60 ensures reliable saturation from low-current GPIO or logic gate drive signals
- Ultra-compact 3-pin UMT/SOT-323 package reduces PCB footprint versus standard SOT-23 in space-critical designs
What is PDTC144WU used for?
The PDTC144WU is used in microcontroller-driven switch circuits where an NPN transistor must be driven directly from a GPIO output without external resistors, such as LED array drivers, relay coil switches, and logic-level signal inverters. Its 47 kΩ built-in base resistor suits designs where the drive source operates at 3.3 V or 5 V with limited source current capability. The 50 V VCEO rating also makes it appropriate for open-collector interface lines and low-voltage solenoid switching in consumer and industrial electronics.
What are the specifications of PDTC144WU?
| Date Of Intro | 1997-09-16 |
| YTEOL | 7 |
| Additional Feature | BUILT-IN BIAS RESISTOR RATIO IS 0.47 |
| Collector Current-Max (IC) | 0.1A |
| Collector-Emitter Voltage-Max | 50V |
| Configuration | SINGLE WITH BUILT-IN RESISTOR |
| DC Current Gain-Min (hFE) | 60 |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity/Channel Type | NPN |
| Surface Mount | YES |
| Terminal Finish | TIN |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| Country of Origin | Malaysia |
Where can I find the PDTC144WU datasheet?
PDTC144WU Datasheet DownloadOfficial datasheet from Nexperia
What are equivalent replacements for PDTC144WU?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What built-in resistor value and ratio does the PDTC144WU provide, and how does this simplify GPIO switching circuit design?
The PDTC144WU integrates a 47 kΩ base resistor with a 0.47 resistor ratio (R1/R2), so a microcontroller GPIO driving 3.3 V or 5 V can directly control the transistor without any external base resistor. This integrated biasing eliminates at least 1 passive component per switch stage, reducing PCB area, BOM count, and placement time in high-density designs with multiple switched outputs.
What are the collector current and voltage ratings of PDTC144WU, and what load types can it switch reliably?
The PDTC144WU is rated for a maximum collector current (IC) of 100 mA and a collector-emitter voltage (VCEO) of 50 V. These specifications allow it to switch LEDs drawing up to 100 mA, small relay coils with 12 V to 48 V coil voltages, and open-collector bus pull-up resistors on lines with supply rails up to 50 V, covering the majority of low-power NPN switching applications in embedded designs.
How does the PDTC144WU's minimum hFE of 60 determine the minimum base drive current needed for full saturation?
With hFE of at least 60 and a maximum collector load of 100 mA, the base current required for saturation is at most 100 mA / 60 = approximately 1.7 mA. The 47 kΩ integrated base resistor limits base current to roughly 70 µA at 3.3 V drive (3.3 V / 47 kΩ), which is sufficient to saturate the transistor for collector currents up to about 4 mA, making the PDTC144WU ideal for very light loads like indicator LEDs driven from high-impedance GPIO pins.
When should a designer choose PDTC144WU over PDTC143Z or PDTC144ET in a 3.3 V GPIO-controlled LED driver circuit?
PDTC144WU uses a higher 47 kΩ base resistor compared to PDTC143Z (4.7 kΩ) and PDTC144ET (47 kΩ with a different package), drawing only about 70 µA from a 3.3 V GPIO versus approximately 700 µA for PDTC143Z. For MCUs with GPIO source current limits of 100 to 200 µA per pin, the PDTC144WU is the safer choice, while PDTC143Z is better when driving heavier loads requiring higher base overdrive for fast switching with collector currents near 100 mA.
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Why Buy from FindMyChip
About Nexperia
Nexperia is a leading electronic component manufacturer. FindMyChip sources Nexperia ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1490 | $0.15 |
| 85+ | $0.0671 | $5.70 |
| 747+ | $0.0447 | $33.39 |
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