PDTC123EU Nexperia Integrated Circuit (SOT23 (3-Pin)) In Stock
Nexperia PDTC123EU is an NPN digital transistor with built-in 2.2 kΩ bias resistors (ratio 1:1), 100 mA collector current, and 50 V collector-emitter voltage in a compact 3-pin SOT-323 (UMT) package. Eliminates external base resistors for simplified circuit design. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Nexperia
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- PDTC123EU Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Built-in 2.2 kΩ bias resistors with 1:1 ratio eliminate external base resistors, reducing PCB component count and assembly cost
- 100 mA collector current and 50 V VCE rating with minimum DC current gain (hFE) of 30 for reliable switching performance
- Compact 3-pin SOT-323 (UMT) surface-mount package enables high-density PCB placement for space-constrained digital switching circuits
Applications
The PDTC123EU is used as a logic-level switching transistor in consumer electronics, microcontroller output stages, and LED driver circuits where a single NPN transistor with built-in base resistors simplifies design. Its 100 mA, 50 V rating and 2.2 kΩ integrated biasing allow direct drive from 3.3 V or 5 V logic outputs without additional passive components. The SOT-323 package supports automated pick-and-place assembly in high-volume production of smartphones, home appliances, and industrial control boards.
Specifications
| Date Of Intro | 1999-05-21 |
| YTEOL | 7 |
| Additional Feature | BUILT IN BIAS RESISTANCE RATIO IS 1 |
| Collector Current-Max (IC) | 0.1A |
| 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 |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the built-in resistor values in the PDTC123EU and how do they simplify PCB design?
The PDTC123EU integrates 2.2 kΩ resistors in a 1:1 bias ratio configuration between the base and the input and base-emitter terminals. This eliminates the need for discrete external base resistors when driving from a microcontroller GPIO, reducing the component count by at least 1 to 2 passives per transistor switch and simplifying the PCB layout for LED drivers and relay control circuits.
Can the PDTC123EU switch loads directly from a 3.3 V MCU output, and what current can it handle?
Yes, the PDTC123EU is designed for direct drive from 3.3 V or 5 V microcontroller GPIO pins thanks to its built-in 2.2 kΩ base resistor. It can switch collector currents up to 100 mA at up to 50 V VCE, making it suitable for driving LEDs, small relays, buzzers, and logic-level signal conversion tasks without exceeding the GPIO source current limit.
How does the SOT-323 package of the PDTC123EU compare to SOT-23 for space-constrained board layouts?
The PDTC123EU uses a 3-pin SOT-323 (UMT) package, which is smaller than the standard SOT-23 at approximately 2.0 × 1.25 mm versus 2.9 × 1.6 mm. This roughly 40% reduction in footprint area allows designers to place more switching transistors per square centimeter in dense PCB regions such as LED array drivers, button debounce circuits, and port expander output stages on compact consumer product boards.
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