PDTC143EU Nexperia Integrated Circuit (SOT23 (3-Pin)) In Stock
Nexperia PDTC143EU is an NPN digital transistor with a built-in 4.7 kΩ bias resistor, rated at 100 mA collector current, 50 V collector-emitter voltage, and minimum hFE of 30, in a compact 3-pin UMT package. The integrated resistor eliminates external base resistors and simplifies PCB layout for digital switching applications. Available globally through authorized distributors with competitive pricing for high-volume designs.
- Manufacturer
- Nexperia
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- PDTC143EU Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated 4.7 kΩ base bias resistor with unity resistor ratio eliminates external components, reducing BOM count and PCB area in digital switching circuits
- 50 V collector-emitter voltage and 100 mA maximum collector current support a wide range of LED drive, relay control, and logic-level switching applications
- Ultra-compact 3-pin UMT (SOT323) package with 2.5 pF maximum collector-base capacitance enables high-density placement on space-constrained PCBs
Applications
The PDTC143EU digital transistor is used in LED indicator drive circuits, relay coil control, and logic-level signal inversion where the integrated 4.7 kΩ base resistor allows direct connection from 3.3 V or 5 V MCU GPIO pins without external resistors. It simplifies base drive design in battery-powered consumer electronics, IoT sensor nodes, and industrial control panels where PCB space is limited. The 50 V, 100 mA rating makes it suitable for driving small relays, optocouplers, and solenoid pre-drivers in automated equipment.
Specifications
| Date Of Intro | 1995-11-01 |
| YTEOL | 7 |
| Additional Feature | BUILT IN BIAS RESISTOR RATIO IS 1 |
| Collector Current-Max (IC) | 0.1A |
| Collector-Base Capacitance-Max | 2.5pF |
| Collector-Emitter Voltage-Max | 50V |
| Configuration | SINGLE WITH BUILT-IN RESISTOR |
| DC Current Gain-Min (hFE) | 30 |
| 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 |
| Power Dissipation-Max (Abs) | 0.2W |
| Reference Standard | IEC-60134 |
| 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 |
| Transition Frequency-Nom (fT) | 230MHz |
| VCEsat-Max | 0.15V |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What base resistor value is built into PDTC143EU, and how does it simplify GPIO drive circuits?
The PDTC143EU includes a 4.7 kΩ internal base resistor with a unity bias resistor ratio. This allows direct connection from a 3.3 V or 5 V MCU GPIO pin without any external series resistor, limiting base current to approximately 0.7 mA from a 3.3 V rail, which is within the output drive capability of most CMOS logic outputs.
What are the collector current and voltage limits of PDTC143EU, and what loads can it switch?
The PDTC143EU supports up to 100 mA collector current and 50 V collector-emitter voltage. These ratings allow it to switch small relays with 5 V or 12 V coils drawing up to 80 mA, drive LED arrays up to 100 mA, and control optocoupler input diodes or small solenoids in automation equipment.
How does the UMT package size of PDTC143EU compare to SOT-23, and what does this mean for PCB density?
The 3-pin UMT (equivalent to SOT323) package is approximately 30% smaller in footprint than a standard SOT-23, with a body measuring roughly 1.0 mm by 0.6 mm versus SOT-23's 2.9 mm by 1.3 mm. This enables placement of PDTC143EU at higher density on portable product PCBs where SOT-23 components would be too large for the available space.
When is PDTC143EU a better choice than a discrete NPN transistor plus external base resistors in a switching circuit?
PDTC143EU is preferred when PCB area is at a premium and at least 1 external 4.7 kΩ resistor would otherwise be needed per transistor. At 100 mA / 50 V ratings, it replaces a 2N3904 plus one resistor, saving a component placement, reducing assembly errors, and cutting PCB area by eliminating a 0402 or 0603 resistor footprint per switching channel in multi-output IO expanders or LED matrix drivers.
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