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

NXP Semiconductors PDTA124XMB,315

Name: PDTA124XMB,315
Brand: NXP Semiconductors
SKU: PDTA124XMB,315
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTA124XMB,315

Manufacturer:: NXP Semiconductors

Category:: Single, Pre-Biased Bipolar Transistors

Package:: SC-101, SOT-883

Datasheet:: PDTA124XMB,315.pdf

Description:: TRANS PREBIAS PNP 50V 0.1A 3DFN

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Product details

Overview

PDTA124XMB from Nexperia is a PNP resistor-equipped transistor (RET) in a DFN1006B-3 (SOT883B) package, designed for digital switching in space-constrained applications. It integrates base bias resistors R1 = 22 kΩ and R2 = 47 kΩ, delivers −100 mA output current, features −50 V V_CEO, and is AEC-Q101 qualified for automotive use.

For engineers reviewing the PDTA124XMB datasheet, PDTA124XMB pinout, PDTA124XMB application, or PDTA124XMB equivalent, key selection criteria include built-in resistor ratio (R2/R1 = 2.1 typ), low-profile 0.37 mm height, thermal resistance of 500 K/W, and compatibility with FR4 PCB reflow soldering footprints.

Technical Context

This RET implements a monolithic PNP bipolar transistor with two integrated silicon-based bias resistors-R1 connected between base and input, R2 between base and emitter-enabling single-resistor drive logic interface. Its fixed R2/R1 ratio of 2.1 ensures stable saturation under −5 V V_CE and −5 mA I_C conditions.

The device operates across −65 °C to +150 °C ambient, with junction temperature limited to 150 °C and total power dissipation capped at 250 mW at 25 °C. Thermal resistance from junction-to-ambient is 500 K/W on standard FR4 PCB, supporting reliable operation in thermally dense mobile and automotive control modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum safe collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin.
I_O	−100 mA: Continuous output current capability; sufficient for driving LED indicators, small relays, or logic inputs.
R1	22 kΩ (typ): Input bias resistor value; sets base current for defined turn-on threshold with standard CMOS/TTL logic levels.
R2/R1	2.1 (typ): Fixed internal resistor ratio; ensures predictable DC current gain (h_FE ≥ 80 at −5 mA) without external tuning.
V_CE(sat)	−150 mV (max): Low saturation voltage at −10 mA I_C/−0.5 mA I_B; minimizes power loss and self-heating in high-duty-cycle switching.
f_T	180 MHz (typ): Transition frequency at −5 V V_CE, −10 mA I_C; supports fast digital switching up to ~10–20 MHz edge rates.
P_tot	250 mW (max at 25 °C): Total power dissipation limit; requires derating above 25 °C per 500 K/W thermal resistance.

Pinout & Package

DFN1006B-3 (SOT883B) is a leadless ultra-small surface-mount plastic package measuring 1.0 × 0.6 × 0.37 mm, optimized for high-density PCB layouts and automated assembly. Its three solder lands are arranged in a triangular footprint with pin 1 marked by binary code "0001" on the top surface.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base)	Connected to internal R1; accepts logic-level drive signal (e.g., MCU GPIO); polarity-sensitive for PNP operation.
2	GND (emitter)	Emitter terminal tied to system ground; serves as common reference for input and output paths in low-side switch configuration.
3	Output (collector)	Switched high-side output node; sinks current to ground when active; connects to load (e.g., LED cathode or IC input pull-down).

Key Features

Feature	Design Value
Integrated bias network	Eliminates need for two external resistors, reducing BOM count and PCB area in digital interface circuits.
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-suitable for body electronics and infotainment modules.
Ultra-low profile	0.37 mm max height enables use in slim mobile devices and stacked PCB assemblies where Z-axis clearance is constrained.
FR4-compatible footprint	Standard reflow soldering pad layout (per Fig 11) ensures manufacturability with mainstream SMT lines without custom stencil design.
Low V_CE(sat)	−150 mV max at rated current reduces conduction loss by >40% versus discrete PNP + resistor alternatives, improving efficiency in battery-powered systems.

Applications

Automotive Interior Lighting Control

Portable Device Status Indication

Use Scenario: Driving individual LED segments in dashboard backlighting or door courtesy lighting.

IC Role / Device Role / Timing Role: Acts as a low-side current sink switch controlled by microcontroller PWM output.

Use Value: Built-in resistors eliminate external components, while −100 mA rating supports multi-LED strings and AEC-Q101 ensures long-term reliability in cabin temperature environments.

Use Scenario: Enabling/disabling status LEDs on Bluetooth earbuds or smartwatches.

IC Role / Device Role / Timing Role: Digital on/off switch interfacing between ultra-low-power MCU GPIO and LED anode/cathode path.

Use Value: 0.37 mm height fits tight mechanical envelopes; −150 mV V_CE(sat) extends battery life by minimizing voltage drop across the switch.

Industrial Sensor Interface Logic

Consumer Appliance Input Conditioning

Use Scenario: Level-shifting and noise-immune signal conditioning for Hall-effect sensor outputs feeding PLC input modules.

IC Role / Device Role / Timing Role: Inverting buffer with hysteresis-like behavior enabled by R1/R2 feedback; converts open-collector sensor signals to clean CMOS-compatible levels.

Use Value: R2/R1 = 2.1 ratio provides stable switching threshold across −40 °C to +105 °C, reducing need for external hysteresis circuitry.

Use Scenario: Debouncing and current-limiting for pushbutton inputs in microwave ovens or washing machine control panels.

IC Role / Device Role / Timing Role: Digital input protector and driver-sinks button leakage current and prevents false triggers from ESD or EMI.

Use Value: −7 V V_EBO and −40 V negative VI rating tolerate transient coupling; AEC-Q101 grade exceeds industrial surge immunity requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PDTC124XMB	NPN complement with identical R1/R2 values (22 kΩ/47 kΩ), same package, but opposite polarity and +100 mA I_O.	Requires inverted logic drive and high-side load connection; unsuitable where ground-referenced sinking is mandatory.	Select when sourcing current from V_CC is preferred, e.g., driving PMOS gate or active-high enable lines.
EMH11T2R	PNP RET in SC-70 package (2.2 × 1.35 × 0.95 mm); R1 = 47 kΩ, R2 = 100 kΩ; higher V_CEO (−60 V), lower I_O (−50 mA).	Larger footprint and taller profile limit use in ultra-thin designs; higher resistor values reduce drive sensitivity.	Choose when higher voltage margin or legacy SC-70 board compatibility outweighs size and current requirements.

Compared with PDTC124XMB and EMH11T2R, PDTA124XMB uniquely balances ultra-miniature size, automotive qualification, and −100 mA sinking capability-making it optimal for next-gen compact, safety-conscious digital interface nodes.

Availability

PDTA124XMB is available at Aetrix Electronics and suitable for automotive interior lighting control, portable device status indication, industrial sensor interface logic, and consumer appliance input conditioning requiring stable component supply and long-lifecycle support.

Supply support for PDTA124XMB 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.

This part belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to replace discrete BJT + resistor combinations in digital switching applications-reducing footprint, assembly cost, and design complexity.

FAQ

What is the maximum operating temperature for PDTA124XMB?

The PDTA124XMB has a maximum junction temperature (T_j) of 150 °C and an ambient operating range of −65 °C to +150 °C. Its thermal resistance (R_th(j-a)) is 500 K/W on standard FR4 PCB, so sustained operation above 85 °C ambient requires power derating per the published curve in Figure 2.

Can PDTA124XMB be used as a direct replacement for a discrete PNP transistor plus two resistors?

Yes-it integrates a PNP BJT with precisely trimmed R1 = 22 kΩ and R2 = 47 kΩ, enabling direct substitution in digital switch circuits. No recalculating base resistors is needed; simply connect input to pin 1, ground to pin 2, and load to pin 3. Layout simplification and pick-and-place cost reduction are immediate benefits.

Is PDTA124XMB compatible with lead-free reflow soldering processes?

Yes-the DFN1006B-3 package is qualified for standard lead-free reflow profiles (J-STD-020). The recommended footprint (Figure 11) uses 0.3 mm wide solder lands with 0.4 mm spacing and 0.25 mm paste deposits, ensuring robust wetting and void-free joints without tombstoning.

Does PDTA124XMB support PWM dimming of LEDs?

Yes-its 180 MHz f_T and −150 mV V_CE(sat) support clean switching at PWM frequencies up to 20 kHz with minimal rise/fall time distortion. For high-frequency dimming (>1 kHz), ensure gate drive strength meets the input capacitance (C_C = 3 pF) and avoid excessive trace inductance on pin 1.

PDTA124XMB,315 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

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

Packaging:: Bulk

Product Status:: Active

Transistor Type:: PNP - Pre-Biased

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

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

Resistor - Base (R1):: 22 kOhms

Resistor - Emitter Base (R2):: 47 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 80 @ 5mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 150mV @ 500µA, 10mA

Current - Collector Cutoff (Max):: 1µA

Frequency - Transition:: 180 MHz

Power - Max:: 250 mW

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DFN1006B-3

PDTA124XMB,315 FAQ

1.How can I place an order for PDTA124XMB,315 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTA124XMB,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 PDTA124XMB,315 reliable?

The price and inventory of PDTA124XMB,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA124XMB,315 is usually 5 days.

3.What payment methods are accepted for PDTA124XMB,315?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA124XMB,315 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTA124XMB,315?

PDTA124XMB,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTA124XMB,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 PDTA124XMB,315?

For technical support, including PDTA124XMB,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA124XMB,315 requirements.

6.How does Aetrix verify that PDTA124XMB,315 is sourced from the original manufacturer or authorized distributors?

All PDTA124XMB,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 PDTA124XMB,315 meets industry standards.

7.What is the process for return or replacement of PDTA124XMB,315?

All PDTA124XMB,315 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA124XMB,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 PDTA124XMB,315 part is unused and in its original packaging.

Return procedure for PDTA124XMB,315:

1.Submit a request within 90 days.

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

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