PDTC114YU Nexperia Transistor RET NPN (SOT23 (3-Pin)) In Stock
PDTC114YU is an NPN resistor-equipped transistor (RET) from Nexperia in SC-70 (SOT-323) 3-pin package with 50 V collector-emitter voltage, 100 mA collector current, and built-in 4.7 kΩ bias resistor. Eliminates external base resistors for simplified circuit design and reduced component count. Ideal for digital switching and logic interface applications in portable and consumer electronics. Available from stock with worldwide shipping.
- Manufacturer
- Nexperia
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- PDTC114YU Datasheet PDF
- Category
- Transistor RET NPN
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Built-in 4.7 kΩ bias resistor eliminates external base resistors, reducing component count and PCB space
- 50 V collector-emitter voltage and 100 mA collector current support a wide range of switching and interface applications
- SC-70 (SOT-323) 3-pin package with 2.5 pF collector-base capacitance for compact high-speed digital switching
- Minimum DC current gain (hFE) of 100 ensures reliable saturation switching from 3.3 V and 5 V logic drive signals
Applications
PDTC114YU is used in digital logic interface circuits, LED drive stages, and relay switching applications where a direct connection from a microcontroller GPIO (3.3 V or 5 V) to the transistor base is required without an external series resistor. Its built-in 4.7 kΩ resistor sets the base drive current automatically, simplifying PCB layout and reducing BOM count in portable consumer electronics, IoT sensor nodes, and industrial I/O expander boards. The compact SC-70 package allows placement in space-constrained designs such as wearables, smart card readers, and miniaturized control modules.
Specifications
| Date Of Intro | 1997-09-16 |
| YTEOL | 7 |
| Additional Feature | BUILT IN BIAS RESISTOR RATIO IS 4.7 |
| 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) | 100 |
| 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 | 0.1V |
| 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
How does the built-in 4.7 kΩ bias resistor in PDTC114YU simplify GPIO-to-transistor interface design at 3.3 V logic levels?
When driven from a 3.3 V GPIO output, the PDTC114YU's internal 4.7 kΩ base resistor limits the base current to approximately 0.6 mA ((3.3 V - 0.7 V) / 4.7 kΩ), which is sufficient to saturate the transistor at up to 100 mA collector current given the minimum hFE of 100. Without an internal resistor, the designer must add an external 4.7 kΩ resistor in series with the base, consuming additional PCB area and a BOM line item. The PDTC114YU integrates this resistor into the SC-70 package, reducing the total component count for each switched output by 1 discrete resistor.
For an LED driver circuit operating at 5 V, how many milliamps can PDTC114YU reliably switch and what limits this?
The PDTC114YU is rated for a maximum collector current of 100 mA (0.1 A) continuous at a collector-emitter voltage up to 50 V. In a 5 V LED drive circuit, the transistor can switch a single high-brightness LED drawing 20 mA to 80 mA comfortably within the 100 mA rating. The upper limit is set by both the maximum IC of 100 mA and the SC-70 package's power dissipation capability (approximately 200 mW at 25°C ambient). For LED loads exceeding 100 mA, a higher-current RET or discrete transistor with external base resistor should be selected instead.
What advantages does PDTC114YU's 2.5 pF collector-base capacitance offer in high-frequency switching circuits?
The 2.5 pF maximum collector-base capacitance (Ccb) of PDTC114YU reduces the Miller effect at the base, enabling faster switching transitions when driven from logic-level signals at frequencies from 100 kHz to several MHz. Low Ccb minimizes the charge that must be supplied to the base to charge the collector-base junction during turn-on, reducing propagation delay. In digital switching applications such as RS-485 bus driver enable control or clock signal gating at 1 MHz to 10 MHz, the 2.5 pF Ccb of PDTC114YU provides faster edge rates compared to transistors with 5 pF to 10 pF collector-base capacitance.
How does PDTC114YU compare to a discrete NPN transistor plus external resistor solution for a relay coil driver?
A relay coil driver using a discrete NPN transistor (e.g., BC817) requires an external 4.7 kΩ base resistor and a separate 1N4148 freewheeling diode, adding 2 components per relay channel. PDTC114YU integrates the 4.7 kΩ base resistor in the SC-70 package, reducing 3-component discrete solutions to 2 (PDTC114YU + diode). With a 50 V VCE rating and 100 mA IC, it can drive relay coils drawing up to 80 mA from a 5 V coil supply with margin remaining. In a 10-channel relay board, this saves 10 external resistors and approximately 30 mm² of PCB space.
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