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

NXP Semiconductors PDTC124EM,315

Name: PDTC124EM,315
Brand: NXP Semiconductors
SKU: PDTC124EM,315
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTC124EM,315

Manufacturer:: NXP Semiconductors

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: PDTC124EM,315.pdf

Description:: TRANS PREBIAS

Quantity:: RFQ Add To RFQ list

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Inventory:860,200

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Product details

Overview

PDTC124EM from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT883 (DFN1006-3) package, featuring integrated 22 kΩ input bias resistor (R1) and 22 kΩ emitter feedback resistor (R2), 50 V V_CEO, 100 mA I_O, and 230 MHz f_T. It functions as a single-chip digital switch for automotive control inputs and industrial logic-level load switching.

For engineers reviewing the PDTC124EM datasheet, PDTC124EM pinout, PDTC124EM application, or PDTC124EM equivalent, this page delivers verified electrical parameters, validated SOT883 terminal mapping, confirmed AEC-Q101 qualification status, and direct alternatives for BC847-based digital interface designs.

Technical Context

This RET integrates a monolithic NPN transistor with two precision laser-trimmed on-die resistors-R1 connected between base and input, R2 between base and emitter-enabling direct TTL/CMOS-compatible drive without external bias components. Its 1:1 R2/R1 ratio (0.8–1.2 typ.) ensures stable saturation across temperature.

The device operates with VI(on) = 1.7–2.5 V at IC = 5 mA and VI(off) = 0.8–1.1 V at IC = 100 µA, delivering predictable turn-on/turn-off thresholds. Its 100 mA output current capability and 100 mV V_CEsat at IC = 10 mA support robust low-side switching in space-constrained automotive modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter voltage before breakdown; supports 24 V automotive rail switching with margin.
I_O	100 mA - Continuous output current rating; sufficient for driving LED indicators, small relays, or logic inputs.
R1	22 kΩ (15.4–28.6 kΩ) - Input bias resistor value; sets base current for defined saturation under 3.3 V/5 V logic drive.
R2/R1	1.0 (0.8–1.2) - Feedback-to-input resistor ratio; stabilizes operating point against β variation and temperature drift.
f_T	230 MHz - Transition frequency of internal transistor; enables fast edge response in digital signal paths up to ~10 MHz.
V_CEsat	100 mV max at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating in high-duty-cycle switching.
h_FE	60 min at V_CE = 5 V, IC = 5 mA - Guaranteed DC current gain ensures reliable saturation with standard logic-level drive.

Pinout & Package

Package: DFN1006-3 (SOT883), ultra-small leadless plastic package (1.0 mm × 0.6 mm × 0.48 mm), optimized for high-density automotive PCBs and reflow-only assembly.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base node)	Logic-level signal entry point; internally connected to R1; accepts 1.7–2.5 V VI(on) for guaranteed turn-on.
2	GND (emitter)	Emitter reference and return path; tied to system ground; forms common node for R2 feedback network.
3	Output (collector)	Switched load connection; sinks up to 100 mA; requires external pull-up or load to positive rail.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive applications per stress test requirements including HTOL, TC, HTRB, and ESD-HBM ≥ 2 kV.
Integrated R1 + R2 bias network	Eliminates two external resistors; reduces BOM count, layout area, and placement cost in digital interface circuits.
Ultra-small SOT883 footprint	1.0 mm × 0.6 mm body size enables use in compact ECUs, sensor modules, and space-limited industrial controllers.
Low V_CEsat and VI(on)	100 mV saturation voltage and 1.7 V minimum on-threshold ensure compatibility with 3.3 V microcontrollers and low-power logic.

Applications

Automotive Body Control Module

Industrial PLC Digital Input Stage

Use Scenario: Level-shifting and conditioning of door lock switch signals into 3.3 V MCU GPIO pins.

IC Role / Device Role / Timing Role: Digital input buffer and noise-immune switch interface with built-in hysteresis via R2 feedback.

Use Value: Replaces discrete BC847 + two resistors, reducing component count by 3× and improving board-level ESD immunity.

Use Scenario: Converting 24 V dry-contact sensor inputs to 5 V logic levels for programmable logic controller (PLC) input cards.

IC Role / Device Role / Timing Role: High-voltage tolerant digital translator with defined VI(on)/VI(off) thresholds and fast 230 MHz f_T.

Use Value: Enables direct 24 V sensing without external voltage divider; maintains <1 µs propagation delay across temperature.

LED Indicator Driver

Microcontroller Peripheral Enable Switch

Use Scenario: Driving status LEDs on automotive instrument clusters where space and thermal budget are constrained.

IC Role / Device Role / Timing Role: Low-side constant-current switch with fixed 100 mA capability and minimal V_CEsat loss.

Use Value: Delivers full LED brightness at 3.3 V logic drive while dissipating only 10 mW at 10 mA load current.

Use Scenario: Enabling/disabling peripheral ICs (e.g., CAN transceivers, ADCs) using MCU GPIO pins with limited drive strength.

IC Role / Device Role / Timing Role: Logic-controlled power gate with defined turn-on threshold and fast 100 ns t_on (derived from f_T).

Use Value: Prevents partial enable states during power-up; eliminates need for external pull-up/pull-down networks.

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
PDTC114EM	R1 = 10 kΩ, R2 = 10 kΩ; lower input resistance increases base current draw at same VI(on).	Better suited for 1.8 V logic interfaces but draws ~2× more input current than PDTC124EM at 3.3 V.	Select when driving from low-voltage MCUs or when faster turn-on is required despite higher input loading.
BC847B	Discrete NPN transistor; no integrated resistors; requires external R_B and R_E for biasing.	Offers higher h_FE (200 min) and wider V_CEO (45 V), but adds 2 passive components and layout complexity.	Select when precise bias tuning, higher gain, or non-standard R2/R1 ratios are needed-only if board space and BOM cost allow.

Compared with PDTC114EM, PDTC124EM provides lower input current consumption at 3.3 V logic; compared with BC847B, it eliminates two passives and improves production yield, though with fixed resistor values and reduced gain flexibility.

Availability

PDTC124EM is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, LED indicator subsystems, and microcontroller peripheral enable circuits requiring stable component supply and AEC-Q101 compliance.

Supply support for PDTC124EM 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 essential semiconductors-including logic, discretes, MOSFETs, and analog devices-for automotive, industrial, and consumer markets.

PDTC124EM belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) product line, designed specifically to replace discrete BJT + resistor combinations in automotive digital interface and industrial control applications.

FAQ

Is PDTC124EM compatible with lead-free reflow soldering?

Yes. The SOT883 package is qualified exclusively for reflow soldering per JEDEC J-STD-020, with peak temperatures up to 260 °C. The datasheet specifies reflow as the only recommended soldering method and provides a dedicated footprint (Fig. 11) with 0.35 mm pitch land patterns and solder paste stencil recommendations.

What is the maximum ambient temperature for continuous 100 mA operation?

At Tamb ≤ 25 °C on a standard FR4 PCB with 70 µm copper, PDTC124EM supports 100 mA continuously with P_tot = 250 mW. Above 25 °C, derating applies: Fig. 1 shows linear derating to zero at ~125 °C ambient, meaning sustained 100 mA operation is limited to Tamb ≤ 75 °C with appropriate PCB copper area.

Can PDTC124EM be used in high-frequency switching applications?

Its 230 MHz f_T supports digital switching up to ~10 MHz with clean edges, but it is not optimized for RF or PWM power conversion. For >10 MHz clock distribution or >100 kHz PWM, consider dedicated high-speed switches or MOSFETs-this RET is intended for logic-level interface and moderate-speed load control.

How does the R2/R1 ratio affect switching behavior?

The 1.0 ±0.2 R2/R1 ratio establishes negative feedback that stabilizes the base voltage during conduction, reducing sensitivity to transistor β variation and temperature drift. This yields consistent VI(on)/VI(off) thresholds and prevents thermal runaway-critical for reliable operation across -40 °C to +125 °C automotive environments.

PDTC124EM,315 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Transistor Type:: -

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

Voltage - Collector Emitter Breakdown (Max):: -

Resistor - Base (R1):: -

Resistor - Emitter Base (R2):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

Frequency - Transition:: -

Power - Max:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

PDTC124EM,315 FAQ

1.How can I place an order for PDTC124EM,315 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTC124EM,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 PDTC124EM,315 reliable?

The price and inventory of PDTC124EM,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC124EM,315 is usually 5 days.

3.What payment methods are accepted for PDTC124EM,315?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC124EM,315 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTC124EM,315?

PDTC124EM,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTC124EM,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 PDTC124EM,315?

For technical support, including PDTC124EM,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC124EM,315 requirements.

6.How does Aetrix verify that PDTC124EM,315 is sourced from the original manufacturer or authorized distributors?

All PDTC124EM,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 PDTC124EM,315 meets industry standards.

7.What is the process for return or replacement of PDTC124EM,315?

All PDTC124EM,315 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC124EM,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 PDTC124EM,315 part is unused and in its original packaging.

Return procedure for PDTC124EM,315:

1.Submit a request within 90 days.

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

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