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

Nexperia USA Inc. PDTC143XTVL

Name: PDTC143XTVL
Brand: Nexperia USA Inc.
SKU: PDTC143XTVL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTC143XTVL

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PDTC143XTVL.pdf

Description:: TRANS PREBIAS NPN TO236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PDTC143XT from Nexperia is an NPN resistor-equipped transistor (RET) in SOT23 package, designed for digital switching applications where integrated bias resistors simplify drive circuitry. It delivers 100 mA output current, features built-in R1 = 4.7 kΩ and R2/R1 = 2.1 ratio, and is AEC-Q101 qualified for automotive signal control and industrial I/O interfacing.

For engineers reviewing the PDTC143XT datasheet, PDTC143XT pinout, PDTC143XT application, or PDTC143XT equivalent, key selection criteria include its 50 V V_CEO, 100 mV V_CEsat at 10 mA/0.5 mA, VI(on)/VI(off) thresholds, thermal resistance of 500 K/W, and compatibility with reflow-only assembly on FR4 PCBs.

Technical Context

This RET integrates a monolithic NPN transistor with two precision on-chip resistors: R1 (4.7 kΩ) connects base to input, and R2 (10 kΩ) connects base to emitter, enabling single-resistor drive logic-level switching without external bias components. Its architecture eliminates base current calculation and reduces layout sensitivity.

The device operates as a saturated switch with guaranteed turn-on at VI(on) ≤ 1.5 V (IC = 20 mA) and reliable turn-off at VI(off) ≥ 0.9 V (IC = 100 µA), supporting direct interface with 3.3 V and 5 V microcontroller GPIOs. Thermal performance is specified for SOT23 mounting on standard FR4 with 500 K/W junction-to-ambient resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter voltage before breakdown; supports 24 V industrial bus and automotive 12 V systems with margin.
I_O	100 mA - Continuous output current capability; sufficient for driving LEDs, small relays, and logic inputs.
R1	4.7 kΩ - Input bias resistor value; sets base current for defined saturation when driven from 3.3 V or 5 V sources.
V_CEsat	100 mV max at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating during conduction.
h_FE	50 min at V_CE = 5 V, I_C = 10 mA - DC current gain ensures robust saturation under worst-case temperature and process variation.
f_T	230 MHz typical - Transition frequency confirms suitability for high-speed digital switching up to ~10–20 MHz edge rates.
P_tot	250 mW at T_amb ≤ 25 °C - Total power dissipation limit defines safe operating area for continuous DC switching.

Pinout & Package

PDTC143XT is housed in a plastic surface-mounted SOT23 (TO-236AB) package measuring 2.9 mm × 1.3 mm × 1.0 mm, optimized for automated placement and reflow soldering on standard FR4 PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base)	Connects to driving logic; internal R1 pulls this node toward V_IN, enabling direct MCU GPIO interface without external resistor.
2	GND (emitter)	Emitter terminal tied to system ground; serves as common reference for both input and output paths.
3	Output (collector)	Switched output node; sinks load current to ground when active; rated for 50 V and 100 mA continuous.

Key Features

Feature	Design Value
Integrated bias network	R1 = 4.7 kΩ + R2 = 10 kΩ enables single-pin logic-level drive and eliminates discrete base resistors.
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114.
Low V_CEsat	≤100 mV ensures <10 mW conduction loss at 100 mA, reducing thermal stress in compact layouts.
Reflow-only assembly	Qualified for JEDEC J-STD-020D reflow profiles only; no wave soldering recommended due to thermal constraints.
Small-footprint SOT23	Standard 3-lead package compatible with existing pick-and-place equipment and IPC-7351B land patterns.

Applications

Automotive Body Control Module

Industrial PLC Digital Output

Use Scenario: Switching 12 V indicator LEDs and solenoid drivers in door modules and lighting controllers.

IC Role / Device Role / Timing Role: NPN RET acting as low-side load switch controlled by 3.3 V microcontroller GPIO.

Use Value: Eliminates two external resistors per channel, reducing BOM count and PCB area while maintaining AEC-Q101 compliance.

Use Scenario: Driving 24 V DC field devices such as sensors, valves, and optocoupler inputs in modular I/O cards.

IC Role / Device Role / Timing Role: Digital interface buffer providing level-shifted, current-sinking output from FPGA or ARM-based controller.

Use Value: 100 mA rating and 50 V V_CEO support industrial supply rails; 100 mV V_CEsat limits self-heating during sustained operation.

Consumer Appliance UI Panel

Medical Diagnostic Equipment I/O

Use Scenario: Controlling backlight segments and tactile feedback actuators in smart home appliance control panels.

IC Role / Device Role / Timing Role: Discrete logic-level switch translating MCU outputs into higher-current loads with minimal component overhead.

Use Value: Built-in resistor ratio ensures consistent turn-on behavior across voltage tolerances (3.3 V ±10 %), improving production yield.

Use Scenario: Isolating and conditioning digital signals between microcontroller subsystems and sensor front-ends in portable diagnostics.

IC Role / Device Role / Timing Role: Signal-level translator and current amplifier for TTL/CMOS-compatible interfaces requiring galvanic separation via optocouplers.

Use Value: f_T = 230 MHz supports clean edge integrity for 1–5 MHz control signaling; low leakage (<1 µA ICEO) preserves signal integrity in low-power sleep states.

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
BC847B, SOT23	Discrete NPN BJT requiring external base resistor; no integrated R1/R2 network; h_FE = 200–450 vs. fixed gain behavior of RET.	Used where adjustable bias or analog amplification is needed; not drop-in for RET logic-switch designs.	Select BC847B only when precise base current tuning or linear operation is required; adds design complexity and component count.
PDTC143ET, SOT23	Same RET architecture but R1 = 10 kΩ, R2 = 10 kΩ (R2/R1 = 1.0); lower input sensitivity and higher VI(on) threshold (~2.5 V).	Better suited for 5 V logic families with higher noise margins; less compatible with 3.3 V GPIOs near V_IL limits.	Choose PDTC143ET when interfacing with legacy 5 V controllers or where reduced input sensitivity improves noise immunity.

Compared with BC847B and PDTC143ET, PDTC143XT offers optimal balance of 3.3 V GPIO compatibility, minimal external components, and automotive qualification-making it preferred for cost-sensitive, space-constrained digital switching in new designs.

Availability

PDTC143XT is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC outputs, consumer appliance UIs, and medical diagnostic I/O requiring stable component supply and long-term manufacturability.

Supply support for PDTC143XT 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 leader in high-volume production of discrete semiconductors, logic devices, and PowerMOS transistors, spun off from NXP in 2017 with focus on automotive, industrial, and computing markets.

PDTC143XT belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered to replace discrete BJT + resistor combinations in digital switching applications while ensuring AEC-Q101 reliability and reflow compatibility.

FAQ

What is the maximum allowable input voltage applied to Pin 1 (input) of PDTC143XT?

The absolute maximum input voltage (VI) is +20 V positive and −7 V negative, per limiting values table. Exceeding these risks permanent damage to the integrated R1 resistor or base-emitter junction. For reliable operation, keep VI within 0 V to 5.5 V when interfacing with standard logic families.

Can PDTC143XT be used in linear (analog amplification) mode?

No-PDTC143XT is characterized and qualified exclusively for digital switching operation. Its integrated resistors fix the base bias point, and datasheet parameters (e.g., h_FE min only, no linearity specs) confirm it is not intended for analog amplification. Use BC847B or similar discrete BJTs for linear applications.

Is wave soldering permitted for PDTC143XT in SOT23 package?

No-reflow soldering is the only recommended method, as stated in Section 11 of the datasheet. Wave soldering subjects the device to prolonged thermal stress exceeding its qualification profile and may cause delamination or parametric shift. SOT23 footprint is optimized for reflow per JEDEC J-STD-020D.

How does the R2/R1 ratio of 2.1 affect switching behavior?

The R2/R1 = 2.1 ratio sets the internal feedback path that stabilizes the base voltage during conduction, ensuring predictable saturation even with varying h_FE. This results in consistent VI(on) ≤ 1.5 V and VI(off) ≥ 0.9 V across temperature and process corners-critical for noise-immune digital interfacing.

PDTC143XTVL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN - Pre-Biased

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: -

Resistor - Base (R1):: 4.7 kOhms

Resistor - Emitter Base (R2):: 10 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 50 @ 10mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 100mV @ 500µA, 10mA

Current - Collector Cutoff (Max):: 1µA

Frequency - Transition:: 230 MHz

Power - Max:: -

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PDTC143XTVL FAQ

1.How can I place an order for PDTC143XTVL through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTC143XTVL 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 PDTC143XTVL reliable?

The price and inventory of PDTC143XTVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143XTVL is usually 5 days.

3.What payment methods are accepted for PDTC143XTVL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143XTVL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTC143XTVL?

PDTC143XTVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTC143XTVL 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 PDTC143XTVL?

For technical support, including PDTC143XTVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143XTVL requirements.

6.How does Aetrix verify that PDTC143XTVL is sourced from the original manufacturer or authorized distributors?

All PDTC143XTVL 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 PDTC143XTVL meets industry standards.

7.What is the process for return or replacement of PDTC143XTVL?

All PDTC143XTVL units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143XTVL, 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 PDTC143XTVL part is unused and in its original packaging.

Return procedure for PDTC143XTVL:

1.Submit a request within 90 days.

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

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