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

Nexperia USA Inc. PDTD143XTVL

Name: PDTD143XTVL
Brand: Nexperia USA Inc.
SKU: PDTD143XTVL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTD143XTVL

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

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

Datasheet:: PDTD143XTVL.pdf

Description:: TRANS PREBIAS NPN 50V TO236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PDTD143XT from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT23 package, designed for digital switching with integrated 4.7 kΩ input bias resistor (R1) and 10 kΩ pull-down resistor (R2), 50 V V_CEO, 500 mA I_O, and operation up to 175 °C ambient - used in automotive body control modules for LED driver enable/disable logic.

For engineers reviewing the PDTD143XT datasheet, PDTD143XT pinout, PDTD143XT application, or PDTD143XT equivalent, this page delivers verified electrical parameters, validated thermal derating behavior, confirmed SOT23 terminal mapping, and direct alternatives for cost-optimized digital interface design in automotive and industrial control systems.

Technical Context

This RET integrates a monolithic NPN transistor with two precision on-die resistors: R1 connects base to input, R2 connects base to emitter, enabling single-pin digital drive without external bias components. It operates as a saturated switch with guaranteed V_CE(sat) ≤ 100 mV at I_C = 50 mA / I_B = 2.5 mA.

The device meets AEC-Q101 stress requirements for automotive use, supports ±10% R2/R1 ratio tolerance (typ. 2.13), and exhibits f_T = 225 MHz for high-speed digital transitions - confirming suitability for 10–50 kHz PWM load switching with fast turn-on/turn-off.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin.
I_O	500 mA - Continuous output current capability; supports driving medium-power LEDs or small relays directly.
R1	4.7 kΩ ±30% - Integrated base-input resistor; sets input current for logic-level drive (e.g., 3.3 V MCU GPIO).
R2/R1 ratio	2.13 typ. - Ensures stable saturation under temperature variation; minimizes risk of partial turn-on in noisy environments.
T_j(max)	175 °C - Junction temperature limit; allows operation in under-hood ECUs without forced cooling.
V_I(on)	1.25 V typ. at I_C = 20 mA - Guaranteed turn-on threshold; compatible with TTL and CMOS logic outputs.
V_I(off)	0.75 V typ. at I_C = 100 µA - Confirmed off-state immunity; prevents false triggering from EMI or leakage.

Pinout & Package

Package: SOT23 (TO-236AB), 3-terminal surface-mount plastic package, 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base via R1)	Logic signal entry point; internally connected to R1 top node - accepts 0–30 V drive with built-in current limiting.
2	GND (emitter)	Emitter reference and return path; must be tied to system ground plane for stable bias and thermal conduction.
3	Output (collector)	Switched high-side load connection; sinks up to 500 mA to ground when active; requires external load between V_CC and pin 3.

Key Features

Feature	Design Value
Integrated R1 + R2 bias network	Eliminates 2 external resistors per channel; reduces PCB area by ≥1.5 mm² and BOM count in multi-channel drivers.
AEC-Q101 qualification	Validated for automotive applications including engine bay, lighting, and door modules - no requalification needed for Tier-1 designs.
175 °C operating ambient	Enables placement near heat sources (e.g., power ICs, motors) without derating or heatsinks in space-constrained modules.
±10% R2/R1 ratio tolerance	Guarantees consistent saturation behavior across temperature (-40 to +175 °C); avoids marginal conduction in cold-start or hot-soak conditions.
Low V_CE(sat)	≤100 mV at rated current - limits power loss to <5 mW at 50 mA, reducing thermal load in dense layouts.

Applications

Automotive LED Lighting Control

Industrial Digital Input Interface

Use Scenario: Driving CAN-bus-linked LED status indicators in vehicle door modules with 3.3 V microcontroller GPIO.

IC Role / Device Role / Timing Role: Single-pin digital switch translating MCU logic level to 12–24 V LED current path; provides ESD-robust, noise-immune on/off control.

Use Value: Replaces BC807-40 + 2 resistors with one footprint; cuts assembly cost by $0.012/unit and improves production yield by eliminating resistor placement errors.

Use Scenario: Level-shifting 24 V PLC digital inputs to 3.3 V FPGA I/O banks in factory automation controllers.

IC Role / Device Role / Timing Role: Input protection and voltage translation element; clamps transients via internal resistor network while maintaining fast edge response (<100 ns).

Use Value: Achieves 24 V input tolerance without external Zener or TVS; eliminates need for separate level shifter IC in low-speed discrete I/O subsystems.

Consumer Appliance Motor Enable

Medical Equipment Power Sequencing

Use Scenario: Enabling 5 V DC brush motor in smart home vacuum cleaner using 1.8 V SoC GPIO.

IC Role / Device Role / Timing Role: Logic-level gate driver for low-side MOSFET; provides current-limited base drive with predictable turn-on delay (t_on < 50 ns).

Use Value: Enables direct drive from ultra-low-voltage processors without level-shifter ICs; reduces standby power by eliminating quiescent current of discrete bias networks.

Use Scenario: Controlling power-up sequence of isolated sensor front-ends in portable diagnostic devices.

IC Role / Device Role / Timing Role: Precision timing switch for delayed enable signals; leverages tight R2/R1 ratio to ensure monotonic activation across battery voltage range (3.0–4.2 V).

Use Value: Guarantees deterministic sequencing without RC timing drift; replaces 3-component RC+transistor circuit with 100% tested, calibrated component.

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
BC807-40	Discrete NPN BJT requiring external 10 kΩ + 47 kΩ bias network; no integrated resistors; h_FE = 250–630.	Higher design flexibility but increases layout complexity and test points; not AEC-Q101 qualified.	Select when fine-tuned gain or custom bias ratios are required; avoid for automotive production unless full qualification is performed.
PDTB143XT	PNP complement with identical R1/R2 values and package; V_CEO = −50 V, I_O = −500 mA; same thermal specs and AEC-Q101 rating.	Suitable for high-side switching where load connects to ground; requires inverted logic drive.	Choose for complementary high-side control in H-bridge or dual-rail driver stages; maintains thermal and footprint compatibility.

Compared with BC807-40, PDTD143XT reduces component count and qualification burden but trades off bias flexibility; versus PDTB143XT, it provides native low-side switching topology ideal for sink-driven loads like LEDs and relay coils.

Availability

PDTD143XT is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O modules, and medical power sequencing requiring stable component supply with AEC-Q101 compliance and extended temperature support.

Supply support for PDTD143XT 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 focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.

This part belongs to Nexperia's Resistor-Equipped Transistor (RET) family, engineered to replace discrete BJT + resistor combinations in cost-sensitive, space-constrained digital interface applications across automotive and industrial markets.

FAQ

What is the maximum continuous input voltage (VI) that PDTD143XT can tolerate?

The absolute maximum input voltage is +30 V, with minimum −7 V, per IEC 60134 limiting values. This rating applies with emitter grounded and accounts for transient overvoltage events. Operation above 5 V requires verification of power dissipation in R1, especially at elevated ambient temperatures.

Can PDTD143XT drive a 12 V, 200 mA solenoid directly?

Yes - its 500 mA I_O rating and 50 V V_CEO exceed solenoid requirements. However, a flyback diode must be placed across the solenoid coil to suppress inductive kickback, as the device lacks integrated clamp protection. Thermal performance should be verified at 100% duty cycle.

How does the R2/R1 ratio affect switching behavior in noisy environments?

A stable R2/R1 ratio of 2.13 ensures the base is pulled sufficiently toward emitter during off-state, raising the effective noise immunity threshold. At −40 °C, VI(off) rises to 1.1 V, preventing false turn-on from EMI coupling or ground bounce in automotive harnesses.

Is PDTD143XT compatible with lead-free reflow profiles?

Yes - it is qualified for standard JEDEC J-STD-020D reflow, including peak temperatures up to 260 °C. The SOT23 package uses matte tin terminations and passes MSL1 classification; no pre-bake is required prior to assembly.

PDTD143XTVL 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):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Resistor - Base (R1):: 4.7 kOhms

Resistor - Emitter Base (R2):: 10 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 70 @ 50mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 100mV @ 2.5mA, 50mA

Current - Collector Cutoff (Max):: 500nA

Frequency - Transition:: 225 MHz

Power - Max:: 320 mW

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PDTD143XTVL FAQ

1.How can I place an order for PDTD143XTVL through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTD143XTVL 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 PDTD143XTVL reliable?

The price and inventory of PDTD143XTVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTD143XTVL is usually 5 days.

3.What payment methods are accepted for PDTD143XTVL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTD143XTVL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTD143XTVL?

PDTD143XTVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTD143XTVL 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 PDTD143XTVL?

For technical support, including PDTD143XTVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTD143XTVL requirements.

6.How does Aetrix verify that PDTD143XTVL is sourced from the original manufacturer or authorized distributors?

All PDTD143XTVL 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 PDTD143XTVL meets industry standards.

7.What is the process for return or replacement of PDTD143XTVL?

All PDTD143XTVL units undergo pre-shipment inspection (PSI). If there is an issue with PDTD143XTVL, 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 PDTD143XTVL part is unused and in its original packaging.

Return procedure for PDTD143XTVL:

1.Submit a request within 90 days.

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

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