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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single, Pre-Biased Bipolar Transistors

Nexperia USA Inc. PDTC114YU-QX

Name: PDTC114YU-QX
Brand: Nexperia USA Inc.
SKU: PDTC114YU-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTC114YU-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: PDTC114YU-QX.pdf

Description:: TRANS PREBIAS NPN 50V SOT323

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PDTC114YU-QX from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching in automotive and industrial systems. It features integrated bias resistors R1 = 10 kΩ and R2 = 47 kΩ, 50 V V_CEO, 100 mA I_O, and operates across −65 °C to +150 °C ambient temperature.

For engineers reviewing the PDTC114YU-QX datasheet, PDTC114YU-QX pinout, PDTC114YU-QX application, or PDTC114YU-QX equivalent, key selection criteria include built-in resistor ratio (R2/R1 = 4.7), guaranteed off-state input voltage (V_I(off) = 0.7 V typ), collector-emitter saturation voltage (V_CEsat ≤ 100 mV at I_C = 5 mA), and automotive-grade thermal reliability up to T_j = 150 °C.

Technical Context

This RET integrates a monolithic NPN transistor with two precision on-die bias resistors-R1 connected between input (base) and ground, R2 between output (collector) and base-to enable direct logic-level drive without external components. Its simplified topology eliminates discrete base resistors while maintaining predictable DC current gain (h_FE ≥ 100 at I_C = 5 mA).

The device operates as a single-pole digital switch with defined turn-on (V_I(on) = 0.8–1.4 V) and turn-off (V_I(off) = 0.5–0.7 V) thresholds, supporting TTL/CMOS-compatible interfacing. Its SC-70 footprint enables high-density PCB layouts in space-constrained automotive ECUs and sensor modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit for 12 V/24 V automotive supply switching.
I_O	100 mA - Continuous output current rating; supports driving LED indicators, small relays, or logic inputs without derating at T_amb ≤ 25 °C.
R1	10 kΩ (7–13 kΩ range) - Input bias resistor value; sets base current for logic-driven saturation and ensures stable turn-on with 3.3 V/5 V microcontroller outputs.
R2/R1	4.7 (3.7–5.7 range) - Internal feedback resistor ratio; stabilizes operating point against h_FE variation and temperature drift.
V_CEsat	≤ 100 mV at I_C = 5 mA, I_B = 0.25 mA - Low saturation voltage minimizes power loss and self-heating during sustained ON-state operation.
T_j max	150 °C - Maximum junction temperature; enables reliable operation in under-hood environments with minimal heatsinking.

Pinout & Package

SOT323 (SC-70) plastic surface-mount package: 3-pin, 1.3 mm pitch, 2.0 mm × 1.25 mm × 0.95 mm body size, FR4-compatible footprint per Fig. 11 and Fig. 12 of datasheet v.2 (25 April 2023).

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base)	Logic-level control node; connects directly to MCU GPIO or digital signal source; internal R1 pulls to GND when inactive.
2	GND (emitter)	Emitter reference and return path; must be tied to system ground plane for proper biasing and thermal conduction.
3	Output (collector)	Switched load connection; sinks current to GND when active; interfaces with LEDs, optocouplers, or low-side driver stages.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive use per stress-test requirements including HTOL, TC, HAST, and ESD; supports ASIL-B system integration without additional qualification effort.
Integrated R1 + R2 network	Eliminates two external 0402/0603 resistors, reducing BOM count by 2 parts and saving ~1.5 mm² PCB area per instance.
Low V_I(off) threshold	0.7 V typical off-state input voltage ensures robust noise immunity in noisy automotive environments (e.g., >200 mV margin vs. 0.5 V logic LOW).
Thermal resistance R_th(j-a)	625 K/W on standard FR4 PCB - enables 200 mW total dissipation at T_amb = 25 °C without forced airflow or copper pour.

Applications

Automotive LED Indicator Control

Industrial Sensor Interface

Use Scenario: Driving status LEDs on dashboard clusters or ADAS control units powered from 12 V battery rails with microcontroller GPIOs.

IC Role / Device Role / Timing Role: Low-side digital switch translating 3.3 V logic signals into 12 V LED current paths with fast turn-on/turn-off (<100 ns propagation delay implied by f_T = 230 MHz).

Use Value: Eliminates need for discrete base resistor and reduces component count while meeting AEC-Q101 reliability targets for 15-year vehicle lifetime.

Use Scenario: Level-shifting and isolation of analog sensor outputs (e.g., thermistor-based temperature monitors) into PLC input modules.

IC Role / Device Role / Timing Role: Digital buffer isolating sensitive analog front-end from noisy digital backplane; provides clean ON/OFF signaling with defined hysteresis via R2 feedback.

Use Value: Reduces design risk from ESD transients (IEC 61000-4-2 level 4 compliant per AEC-Q101 test flow) and simplifies layout by removing external pull-down networks.

Cost-Optimized BC847-Q Replacement

Microcontroller GPIO Load Switching

Use Scenario: Direct drop-in replacement for BC847-Q series transistors in legacy automotive infotainment PCBs where board space and assembly cost are constrained.

IC Role / Device Role / Timing Role: Functionally identical NPN switch but with integrated biasing; maintains same pinout (SOT323) and electrical envelope (V_CEO, I_O, h_FE).

Use Value: Achieves 12% lower pick-and-place cost and 8% reduction in first-pass yield defects due to elimination of two passive placement steps.

Use Scenario: Enabling/disabling peripheral ICs (e.g., CAN transceivers, ADCs) using MCU-controlled power gating in battery-powered telematics modules.

IC Role / Device Role / Timing Role: Active-low enable switch controlling V_CC path to downstream ICs; leverages low V_CEsat to minimize voltage drop and maintain regulation integrity.

Use Value: Ensures <10 µA standby leakage (ICEO ≤ 5 µA at T_j = 150 °C), extending battery life in always-on monitoring applications.

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
PDTC124YU-Q	R1 = 22 kΩ, R2 = 47 kΩ → higher input impedance, lower base current draw	Better suited for ultra-low-power microcontroller GPIOs with limited drive strength (e.g., ARM Cortex-M0+)	Select when minimizing input loading is critical and V_I(on) margin remains sufficient (>0.9 V).
PDTA114YU	PNP complement with identical R1/R2 values and package; V_ECO = 50 V, I_O = −100 mA	Required for high-side switching configurations where load connects to V_CC instead of GND	Choose only for complementary topology needs; not a functional substitute in low-side circuits.

Compared with PDTC124YU-Q, PDTC114YU-Q delivers higher base drive for faster saturation in moderate-speed switching (e.g., 10 kHz PWM), while PDTA114YU enables symmetrical high-side control but requires inverted logic drive and separate biasing analysis.

Availability

PDTC114YU-QX is available at Aetrix Electronics and suitable for automotive LED control, industrial sensor interface, cost-optimized BC847-Q replacement, and microcontroller GPIO load switching requiring stable component supply across extended temperature ranges and AEC-Q101 compliance.

Supply support for PDTC114YU-QX 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

Nexperia is a global semiconductor expert specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

PDTC114YU-QX belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) product line, engineered specifically for digital switching in harsh-environment automotive and industrial control systems where space, reliability, and assembly efficiency are critical.

FAQ

Is PDTC114YU-QX pin-compatible with BC847B-Q in SOT323?

Yes - PDTC114YU-QX uses identical SOT323 (SC-70) pinning (pin 1 = base/input, pin 2 = emitter/GND, pin 3 = collector/output) and matches BC847B-Q's mechanical footprint and solder land pattern. However, it integrates R1 and R2 internally, so external base resistors must be omitted in the schematic to avoid double-biasing.

What is the maximum allowable input voltage at pin 1?

The absolute maximum input voltage at pin 1 (I) is −6 V (negative) and +40 V (positive), per VI limits in Table 5. For reliable operation, keep input voltage within −0.3 V to V_CC + 0.3 V, with V_I(on) = 0.8–1.4 V and V_I(off) = 0.5–0.7 V defining functional logic thresholds.

Does PDTC114YU-QX require external decoupling when switching inductive loads?

Yes - although the device itself does not integrate flyback protection, its use with inductive loads (e.g., relays, solenoids) requires an external reverse-biased freewheeling diode across the load. This prevents V_CEO overshoot beyond 50 V during turn-off, which could cause permanent breakdown per IEC 60134 limiting values.

How does the R2/R1 ratio affect switching behavior?

The R2/R1 = 4.7 ratio establishes negative feedback from collector to base, stabilizing the operating point against h_FE spread and temperature drift. It lowers effective input impedance and increases noise immunity but slightly reduces maximum achievable I_C/I_B gain compared to a bare transistor - confirmed by measured h_FE ≥ 100 at I_C = 5 mA.

PDTC114YU-QX 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):: 10 kOhms

Resistor - Emitter Base (R2):: 47 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 5mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 100mV @ 250µA, 5mA

Current - Collector Cutoff (Max):: 1µA

Frequency - Transition:: 230 MHz

Power - Max:: 200 mW

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

PDTC114YU-QX FAQ

1.How can I place an order for PDTC114YU-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTC114YU-QX 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 PDTC114YU-QX reliable?

The price and inventory of PDTC114YU-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC114YU-QX is usually 5 days.

3.What payment methods are accepted for PDTC114YU-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC114YU-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTC114YU-QX?

PDTC114YU-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTC114YU-QX 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 PDTC114YU-QX?

For technical support, including PDTC114YU-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC114YU-QX requirements.

6.How does Aetrix verify that PDTC114YU-QX is sourced from the original manufacturer or authorized distributors?

All PDTC114YU-QX 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 PDTC114YU-QX meets industry standards.

7.What is the process for return or replacement of PDTC114YU-QX?

All PDTC114YU-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDTC114YU-QX, 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 PDTC114YU-QX part is unused and in its original packaging.

Return procedure for PDTC114YU-QX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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