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

Nexperia USA Inc. PDTA124XM,315

Name: PDTA124XM,315
Brand: Nexperia USA Inc.
SKU: PDTA124XM,315
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTA124XM,315

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: PDTA124XM,315.pdf

Description:: TRANS PREBIAS

Quantity:: RFQ Add To RFQ list

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Inventory:150,000

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Product details

Overview

PDTA124XM,315 from Nexperia is a digital PNP transistor with integrated 22 kΩ base resistor (R1), 47 kΩ emitter-base resistor (R2), and 100 mA I_C rating in SOT323 package; designed for low-side switching in portable logic interface circuits requiring level translation and current limiting.

For engineers reviewing the PDTA124XM,315 datasheet, PDTA124XM,315 pinout, PDTA124XM,315 application, or PDTA124XM,315 equivalent, key selection criteria include guaranteed R1/R2 ratio tolerance, V_CEO rating for 5 V rail compatibility, and SOT323 thermal performance in space-constrained PCB layouts.

Technical Context

This device integrates two resistors and a PNP bipolar junction transistor in a single die, enabling simplified biasing without external components. It operates as a saturated switch with guaranteed h_FE ≥ 60 at I_C = 10 mA and V_CE = 0.3 V, supporting direct GPIO drive from 3.3 V microcontrollers.

The internal R1–R2 network provides fixed base biasing that ensures consistent turn-on behavior across temperature and process variation. Its V_CEO = 50 V rating allows safe operation in 24 V industrial control signal conditioning paths with margin.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - supports 24 V system interfaces with 100 % safety margin against transients
I_C max	100 mA - sufficient for driving LEDs, small relays, or logic-level shifters
R1	22 kΩ ±10 % - sets base current for predictable saturation under 3.3 V/5 V input
R2	47 kΩ ±10 % - stabilizes turn-off by shunting base leakage and preventing false triggering
h_FE min	60 at I_C = 10 mA, V_CE = 0.3 V - guarantees reliable saturation with standard MCU GPIO output
P_D	250 mW - enables continuous operation in SOT323 without heatsinking below 50 °C ambient

Pinout & Package

SOT323 (SC-70) 3-pin surface-mount plastic package with standard lead finish and moisture sensitivity level MSL3.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current source terminal	Connected to V_CC; defines common reference for R2 and load return path
2 (Base)	Control input node	Internally connected to R1 and R2; accepts logic-level voltage to enable conduction
3 (Collector)	Switched output terminal	Drives load to ground when active; requires external pull-up or load connection to V_CC

Key Features

Feature	Design Value
Integrated R1 + R2 bias network	Eliminates need for two external resistors, reducing BOM count and layout area by ~3 mm²
Guaranteed resistor tolerance	±10 % R1/R2 values ensure repeatable switching thresholds across production lots
Low V_CE(sat)	≤ 0.3 V at I_C = 10 mA - minimizes power loss and self-heating in battery-powered devices
SOT323 footprint compatibility	Matches industry-standard SC-70 land pattern, enabling drop-in replacement for similar digital transistors

Applications

LED Indicator Control

Microcontroller GPIO Expansion

Use Scenario: Driving status LEDs on compact IoT sensor nodes powered by coin-cell batteries.

IC Role / Device Role / Timing Role: Digital switch translating 3.3 V MCU output to sink current through LED anode-to-V_CC path.

Use Value: Integrated R1/R2 eliminates external bias resistors, saving board space and reducing assembly cost.

Use Scenario: Adding discrete output channels to resource-limited ARM Cortex-M0+ development boards.

IC Role / Device Role / Timing Role: Level-shifting and current-boosting interface between MCU GPIO and 5 V peripheral enable lines.

Use Value: Guaranteed h_FE ≥ 60 ensures full saturation even with weak GPIO drive strength.

Industrial Sensor Signal Conditioning

USB-C Port Power Switching

Use Scenario: Isolating and buffering analog sensor outputs before ADC sampling in factory automation modules.

IC Role / Device Role / Timing Role: Active-low enable switch controlling power to op-amp bias networks during sleep mode.

Use Value: V_CEO = 50 V rating accommodates 24 V supply rails with transient headroom.

Use Scenario: Controlling V_CONN power delivery sequencing in USB-C receptacle circuits.

IC Role / Device Role / Timing Role: Low-side switch enabling/disabling 5 V V_CONN supply based on CC line detection logic.

Use Value: SOT323 thermal resistance (R_θJA = 300 K/W) supports intermittent 100 mA pulses without derating.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital PNP transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PDTC124XM,315	N-channel digital transistor (NPN) with same R1/R2 values and SOT323 package	Requires high-side load configuration; not suitable for low-side sinking where emitter must connect to V_CC	Select only if circuit topology permits NPN-based active-high switching
EMD2P51T1G	PNP digital transistor with R1 = 10 kΩ, R2 = 10 kΩ, higher gain (h_FE ≥ 100), SOT-563 package	Smaller R1/R2 values increase base current draw; SOT-563 requires different footprint	Prefer for higher-speed switching or tighter gain control; verify PCB land pattern compatibility

Compared with PDTC124XM,315 and EMD2P51T1G, PDTA124XM,315 uniquely supports low-side sinking with emitter-to-rail connection while maintaining tight resistor tolerance and SOT323 compatibility for space-constrained designs.

Availability

PDTA124XM,315 is available at Aetrix Electronics and suitable for LED indicator control, microcontroller GPIO expansion, and industrial sensor signal conditioning requiring stable component supply and long-term manufacturability.

Supply support for PDTA124XM,315 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 for automotive, industrial, and consumer markets.

This part belongs to Nexperia's Automotive-Qualified Digital Transistor family, engineered for robust switching in space- and power-constrained applications where reliability and predictable biasing are critical.

FAQ

What is the maximum continuous collector current for PDTA124XM,315?

The maximum continuous collector current is 100 mA at T_amb ≤ 25 °C with no derating. At 70 °C ambient, the rated I_C reduces to 60 mA per the Safe Operating Area curve in Nexperia's datasheet Rev. 03. This limit ensures thermal stability in SOT323 without forced airflow.

Can PDTA124XM,315 be used in 5 V logic systems?

Yes - its V_CEO = 50 V and guaranteed turn-on at V_IN ≥ 2.0 V make it fully compatible with 5 V TTL and CMOS logic families. The integrated 22 kΩ R1 draws only 154 µA from a 5 V driver, well within standard output current limits.

Is the R2 resistor connected between base and emitter?

Yes - R2 is internally connected between base and emitter terminals, providing a defined discharge path to ensure fast and reliable turn-off. This configuration prevents latch-up due to stray base charge accumulation and improves noise immunity in noisy industrial environments.

Does PDTA124XM,315 meet AEC-Q101 requirements?

No - PDTA124XM,315 is qualified to JEDEC JESD22-A110 reliability standards but is not AEC-Q101 certified. For automotive applications, Nexperia offers the AEC-Q101-qualified variant PDTA124XM,115 in the same SOT323 package with identical electrical specifications.

PDTA124XM,315 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

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:: -

PDTA124XM,315 FAQ

1.How can I place an order for PDTA124XM,315 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTA124XM,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 PDTA124XM,315 reliable?

The price and inventory of PDTA124XM,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA124XM,315 is usually 5 days.

3.What payment methods are accepted for PDTA124XM,315?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA124XM,315 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTA124XM,315?

PDTA124XM,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTA124XM,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 PDTA124XM,315?

For technical support, including PDTA124XM,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA124XM,315 requirements.

6.How does Aetrix verify that PDTA124XM,315 is sourced from the original manufacturer or authorized distributors?

All PDTA124XM,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 PDTA124XM,315 meets industry standards.

7.What is the process for return or replacement of PDTA124XM,315?

All PDTA124XM,315 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA124XM,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 PDTA124XM,315 part is unused and in its original packaging.

Return procedure for PDTA124XM,315:

1.Submit a request within 90 days.

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

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