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

Nexperia USA Inc. PDTC143TM,315

Name: PDTC143TM,315
Brand: Nexperia USA Inc.
SKU: PDTC143TM,315
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTC143TM,315

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: SC-101, SOT-883

Datasheet:: PDTC143TM,315.pdf

Description:: TRANS PREBIAS NPN 50V SOT883

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Product details

Overview

PDTC143TM from Nexperia is an NPN resistor-equipped transistor (RET) with integrated 4.7 kΩ base bias resistor (R1), open R2 configuration, 50 V V_CEO, 100 mA I_O, and SOT883 ultra-small surface-mount package. It functions as a single-transistor switch in space-constrained digital interface circuits, replacing discrete BJT + two resistors in level-shifting and GPIO-driven load control.

For engineers reviewing the PDTC143TM datasheet, PDTC143TM pinout, PDTC143TM application, or PDTC143TM equivalent, key selection criteria include its built-in bias network, 100 mV V_CEsat at 5 mA/0.25 mA drive, thermal resistance of 500 K/W (reflow mounted), and SC-101 footprint compatibility for high-density PCB layouts.

Technical Context

This device integrates a monolithic NPN transistor with a precision 4.7 kΩ input resistor (R1) connected between base and emitter; R2 is unconnected (open), enabling direct logic-level drive without external pull-down. It operates as a saturated switch with guaranteed h_FE ≥ 200 at I_C = 1 mA, V_CE = 5 V.

Designed for reflow soldering only, it uses the SOT883 package - leadless, 1.0 × 0.6 × 0.5 mm body with three solder lands - requiring FR4 PCBs with 60 μm copper strip lines per Nexperia's mounting specification. Its 150 °C max junction temperature supports operation in thermally demanding industrial ambient environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - maximum collector-emitter voltage before breakdown; enables use in 24 V industrial bus interfaces and 3.3/5 V logic-controlled 12 V loads.
I_O	100 mA DC - continuous output current rating; sufficient to drive LEDs, small relays, or logic inputs without derating at T_amb ≤ 25 °C.
R1	4.7 kΩ ±25% - integrated base bias resistor; eliminates need for external resistor, reducing BOM count and layout area by ~2 components per switch node.
V_CEsat	100 mV max at I_C = 5 mA, I_B = 0.25 mA - low saturation voltage minimizes power loss (≤0.5 mW) and self-heating in always-on or PWM-driven switching nodes.
h_FE	200 min at V_CE = 5 V, I_C = 1 mA - ensures reliable turn-on with standard CMOS logic outputs (e.g., 3.3 V MCU GPIO), even under worst-case process variation.
P_tot	250 mW at T_amb ≤ 25 °C - total power dissipation limit; defines safe operating area when combined with 500 K/W thermal resistance in standard reflow mount.

Pinout & Package

SOT883 (SC-101) is a leadless ultra-small plastic package with 3 solder lands, body dimensions 1.0 × 0.6 × 0.5 mm. It requires reflow soldering only and is mounted on FR4 with 60 μm copper strip lines per Nexperia specification.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Input control node	Connected internally to R1; accepts logic-level voltage directly-no external base resistor needed for standard CMOS drive.
2 (Emitter)	Current return path	Internally tied to one end of R1; forms common reference for bias network and output current sink.
3 (Collector)	Switched output node	Carries full load current (up to 100 mA); placed on PCB edge or thermal pad for heat dissipation in high-duty-cycle applications.

Key Features

Feature	Design Value
Built-in R1 bias resistor	4.7 kΩ monolithic resistor reduces component count by one per switch, eliminating placement error and solder joint failure risk.
Open R2 configuration	No internal pull-down resistor - preserves full logic-high swing at base, enabling clean turn-off with high-impedance drivers (e.g., microcontroller sleep modes).
Low V_CEsat	≤100 mV ensures minimal voltage drop across collector-emitter during conduction, critical for battery-powered systems where efficiency impacts runtime.
SOT883 footprint	1.0 × 0.6 mm body enables routing beneath fine-pitch ICs and fits within 1.2 mm pitch grids - ideal for wearables and miniaturized IoT sensor nodes.

Applications

LED Indicator Control

Microcontroller GPIO Interface

Use Scenario: Driving status LEDs from 3.3 V MCU pins in compact medical handheld devices.

IC Role / Device Role / Timing Role: Single-stage current sink switch, activated by GPIO high signal.

Use Value: Eliminates need for external base resistor and saves 0.8 mm² PCB area per LED channel while maintaining <100 mV dropout at 10 mA.

Use Scenario: Level-shifting and buffering between 1.8 V FPGA I/O banks and 5 V peripheral enable lines.

IC Role / Device Role / Timing Role: Logic-compatible voltage translator with fast turn-on (<100 ns propagation delay implied by C_c = 2.5 pF).

Use Value: Enables direct connection without level shifter ICs; R1 value ensures full saturation with sub-0.5 mA drive current.

Relay Driver Stage

Load Switch for Sensor Modules

Use Scenario: Controlling 12 V/40 mA coil relays in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Low-side switch with flyback diode protection externally added.

Use Value: 50 V V_CEO safely absorbs inductive kickback; 100 mV V_CEsat limits relay coil heating and improves contact life.

Use Scenario: Power gating for low-power environmental sensors (e.g., I²C temperature/humidity) in battery-operated gateways.

IC Role / Device Role / Timing Role: Enable-controlled power rail switch with near-zero quiescent current when off.

Use Value: Open R2 ensures no leakage path to ground; ICEO ≤ 1 μA guarantees <100 nA system standby current contribution.

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
PDTC143TK	SOT346 (SC-59) package; larger 1.3 × 1.0 mm body; same R1 = 4.7 kΩ, V_CEO = 50 V, I_O = 100 mA	Requires more PCB area but offers higher thermal mass and easier manual rework; compatible with wave soldering.	Select when board assembly includes mixed SMT/thru-hole processes or thermal cycling reliability >1000 cycles is required.
PDTC143TE	SOT416 (SC-75) package; 0.95 × 0.60 mm body; lower P_tot = 150 mW; same electrical specs	Smaller than SOT883 in length but taller; limited to lower power density designs due to 833 K/W thermal resistance.	Select only for ultra-low-current (<20 mA) switching where footprint is secondary to cost and legacy footprint reuse.

Compared with PDTC143TK and PDTC143TE, PDTC143TM delivers optimal balance of miniaturization (SOT883), thermal performance (500 K/W), and manufacturability (reflow-only), making it preferred for high-volume, space-constrained consumer and industrial electronics.

Availability

PDTC143TM is available at Aetrix Electronics and suitable for LED indicator control, microcontroller GPIO interfacing, and relay driver stages requiring stable component supply across automotive infotainment, industrial HMI, and portable medical equipment programs.

Supply support for PDTC143TM 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 discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on high-volume, high-reliability components for automotive, industrial, computing, and consumer markets.

The PDTC143T series belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered to simplify digital switching circuits by integrating bias networks into standard transistor packages - reducing design time and improving manufacturing yield.

FAQ

Is PDTC143TM pin-compatible with standard SOT-23 transistors?

No. PDTC143TM uses the SOT883 (SC-101) package with 1–2–3 pinning: Base–Emitter–Collector. Standard SOT-23 has different dimensions, land pattern, and typically E–B–C or C–B–E pinout. Direct replacement requires PCB redesign and footprint validation per Nexperia's SOT883 outline drawing.

Can PDTC143TM be used in linear amplification mode?

No. This device is optimized and characterized exclusively for saturated switching operation. Its h_FE is specified only at I_C = 1 mA, and V_CEsat is guaranteed - not small-signal gain or frequency response. Linear use risks thermal instability and undefined gain behavior outside datasheet conditions.

What is the maximum allowable PCB trace width for SOT883 thermal relief?

Nexperia specifies use of FR4 with 60 μm copper strip lines for SOT883 mounting. For thermal management, a minimum 0.5 mm wide copper pour connected to pin 3 (collector) is recommended. Wider traces (>1.0 mm) improve heat dissipation but must comply with IPC-2221 spacing rules for 250 mW operation at 70 °C ambient.

Does PDTC143TM require a flyback diode when driving inductive loads?

Yes. Although V_CEO is rated at 50 V, inductive kickback from relays or solenoids can exceed this during turn-off. A Schottky diode (e.g., PMEG2005AEH) must be placed cathode-to-collector, anode-to-emitter to clamp voltage spikes and prevent junction breakdown.

PDTC143TM,315 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-101, SOT-883

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):: 4.7 kOhms

Resistor - Emitter Base (R2):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 1mA, 5V

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

Current - Collector Cutoff (Max):: 1µA

Frequency - Transition:: -

Power - Max:: 250 mW

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-883

PDTC143TM,315 FAQ

1.How can I place an order for PDTC143TM,315 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTC143TM,315 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 PDTC143TM,315 reliable?

The price and inventory of PDTC143TM,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143TM,315 is usually 5 days.

3.What payment methods are accepted for PDTC143TM,315?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143TM,315 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTC143TM,315?

PDTC143TM,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTC143TM,315 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 PDTC143TM,315?

For technical support, including PDTC143TM,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143TM,315 requirements.

6.How does Aetrix verify that PDTC143TM,315 is sourced from the original manufacturer or authorized distributors?

All PDTC143TM,315 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 PDTC143TM,315 meets industry standards.

7.What is the process for return or replacement of PDTC143TM,315?

All PDTC143TM,315 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143TM,315, 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 PDTC143TM,315 part is unused and in its original packaging.

Return procedure for PDTC143TM,315:

1.Submit a request within 90 days.

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

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