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

NXP Semiconductors PDTA115TU,115

Name: PDTA115TU,115
Brand: NXP Semiconductors
SKU: PDTA115TU,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTA115TU,115

Manufacturer:: NXP Semiconductors

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: PDTA115TU,115.pdf

Description:: TRANS PNP W/RES 50V SOT323

Quantity:: RFQ Add To RFQ list

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Inventory:206,400

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Product details

Overview

PDTA115TU,115 from Nexperia is a PNP resistor-equipped transistor (RET) with integrated 100 kΩ base bias resistor (R1), designed for general-purpose switching and amplification in compact surface-mount applications. It features −50 V V_CEO, −100 mA DC output current, 200 mW power dissipation in SOT323, and operates across −65 °C to +150 °C ambient temperature - used in logic-level interface circuits and low-power load switching.

For engineers reviewing the PDTA115TU,115 datasheet, PDTA115TU,115 pinout, PDTA115TU,115 application, or PDTA115TU,115 equivalent, key selection criteria include its built-in R1 value (70–130 kΩ), SOT323 (SC-70) package footprint, PNP polarity with emitter-grounded configuration, and suitability for space-constrained digital I/O buffering and level translation.

Technical Context

This device integrates a single PNP bipolar junction transistor with one external-base bias resistor (R1 = 100 kΩ typ., 70–130 kΩ range) and an open R2 terminal - enabling simplified single-resistor drive without external base pull-up/down. Its internal resistor network eliminates need for discrete bias components in standard switch configurations.

The SOT323 package defines its thermal resistance at 625 K/W (junction-to-ambient, free air), limiting continuous DC operation to ≤200 mW at T_amb ≤ 25 °C. Electrical behavior follows standard BJT saturation and cutoff characteristics, with h_FE ≥ 100 at I_C = −1 mA and V_CE = −5 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum collector-emitter voltage before breakdown; sets safe operating range for low-voltage PNP switching.
I_O (DC)	−100 mA: Continuous collector current capability; supports driving small relays, LEDs, or logic inputs.
R1	70–130 kΩ: Integrated base bias resistor tolerance; enables direct microcontroller GPIO connection without external resistor.
P_tot	200 mW: Total power dissipation limit in SOT323; constrains max I_C×V_CE product at room temperature.
h_FE	≥100: Minimum DC current gain at −1 mA collector current; ensures reliable saturation with low base drive.
V_CE(sat)	−150 mV max at I_C = −5 mA, I_B = −0.25 mA: Low saturation voltage reduces power loss in on-state switching.
C_c	3 pF: Collector capacitance at −10 V V_CB; impacts high-frequency response and switching speed in digital applications.

Pinout & Package

SOT323 (SC-70) is a 3-lead surface-mount plastic package measuring 2.2 × 1.35 × 1.15 mm (L × W × H), optimized for automated placement and reflow soldering only.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base)	Connected internally to R1; accepts logic-level drive signal directly from MCU or gate output.
2	GND (emitter)	Emitter tied to system ground; forms common reference for PNP switching topology.
3	Output (collector)	Switched output node; sinks current when active, suitable for low-side load control or inverted logic output.

Key Features

Feature	Design Value
Built-in bias resistor R1	100 kΩ typical (70–130 kΩ range); eliminates external component for basic switching, reducing BOM count by one resistor.
Emitter-grounded configuration	Pin 2 = emitter; simplifies PCB layout by fixing reference node and enabling direct GND tie without routing.
Low V_CE(sat)	≤ −150 mV at I_C = −5 mA; minimizes conduction loss in battery-powered or thermally constrained designs.
Wide operating temperature	−65 °C to +150 °C storage/junction range; supports industrial and automotive under-hood environments.
Reflow-only assembly	Qualified for lead-free reflow per J-STD-020; not compatible with wave or hand-soldering due to thermal limits.

Applications

LED Driver Circuit

Microcontroller I/O Buffer

Use Scenario: Driving indicator LEDs from 3.3 V or 5 V microcontroller GPIO pins with current limiting.

IC Role / Device Role / Timing Role: PNP switch sinking LED anode current through collector, with emitter grounded and base driven via integrated R1.

Use Value: Eliminates need for external base resistor; ensures consistent turn-on with 0.25 mA base current at 3.3 V drive.

Use Scenario: Level-shifting and inverting logic signals between mixed-voltage domains (e.g., 1.8 V MCU to 5 V peripheral).

IC Role / Device Role / Timing Role: Inverter stage using PNP RET as active-low driver; input at base, output at collector, emitter grounded.

Use Value: Provides clean rail-to-rail inversion with <150 mV saturation drop, preserving noise margin in digital interfaces.

Relay Coil Driver

Power Rail Enable Switch

Use Scenario: Controlling low-power electromagnetic relays (≤100 mA coil current) in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: High-side switch replacement in sink-configured systems; collector drives relay coil to V_CC, emitter grounded.

Use Value: Delivers full −100 mA output with guaranteed h_FE ≥ 100, enabling reliable relay actuation from 3.3 V logic.

Use Scenario: Enabling/disabling auxiliary power rails (e.g., sensor bias, analog front-end) in portable medical devices.

IC Role / Device Role / Timing Role: Load switch controlling V_OUT path; collector connected to load, emitter to GND, base driven by enable signal.

Use Value: Achieves <1 µA leakage in cutoff (ICEO ≤ −1 µA), minimizing standby current in battery-critical applications.

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
PDTC115TU	NPN complement; same SOT323 package, identical R1 value and ratings but opposite polarity.	Requires high-side drive or active-high control logic instead of active-low; unsuitable where PNP sourcing is required.	Select PDTC115TU only when circuit topology demands NPN switching with identical bias integration.
PDTA123EU	Same PNP RET function but R1 = 2.2 kΩ (vs. 100 kΩ); lower base resistance enables higher drive current and faster switching.	Better suited for higher-speed digital switching (>1 MHz) or loads requiring >10 mA base current; increases power draw in static states.	Choose PDTA123EU when faster turn-on/turn-off or higher I_C drive is needed; avoid if GPIO current budget is tight.

Compared with PDTA115TU,115, PDTC115TU offers complementary NPN functionality in identical packaging but requires redesign of control logic polarity, while PDTA123EU trades higher base current consumption for improved switching performance - making PDTA115TU optimal for low-power, low-speed, active-low interface roles.

Availability

PDTA115TU,115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller I/O buffering, relay coil driving, and power rail enable switching requiring stable component supply and long-term industrial availability.

Supply support for PDTA115TU,115 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, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.

The PDTA115TU,115 belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to reduce component count and simplify PCB layout in cost-sensitive, space-constrained digital interface and switching applications.

FAQ

What is the function of the internal resistor R1 in PDTA115TU,115?

R1 is a 100 kΩ (70–130 kΩ) base bias resistor integrated between pin 1 (base) and the internal transistor base node. It allows direct connection to logic outputs without external components, providing fixed base current for predictable saturation at defined drive voltages - eliminating design iteration for bias network sizing.

Can PDTA115TU,115 be used in place of a standard PNP transistor like BC807?

No - PDTA115TU,115 is not a drop-in replacement for discrete BJTs such as BC807 because it lacks a standalone base terminal; its base is internally accessed only through R1. Substitution requires circuit redesign to accommodate the integrated resistor and emitter-grounded pinout (pins 1–2–3 = base–emitter–collector).

What is the maximum allowable continuous collector current at 85 °C ambient?

At T_amb = 85 °C, derating applies: P_tot drops linearly from 200 mW at 25 °C to 0 mW at 150 °C. At 85 °C, max P_tot ≈ 133 mW. With V_CE(sat) ≤ −150 mV, max continuous I_C ≈ 887 mA - but absolute limiting value remains −100 mA per datasheet Table 6, so −100 mA is the hard ceiling regardless of temperature.

Is wave soldering permitted for the SOT323 package of PDTA115TU,115?

No - the datasheet explicitly states "reflow soldering is the only recommended soldering method" for SOT323. Wave soldering exceeds thermal limits of the package and risks delamination or die damage; only JEDEC-compliant reflow profiles (per J-STD-020) are qualified for this device.

PDTA115TU,115 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:: -

PDTA115TU,115 FAQ

1.How can I place an order for PDTA115TU,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTA115TU,115 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 PDTA115TU,115 reliable?

The price and inventory of PDTA115TU,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA115TU,115 is usually 5 days.

3.What payment methods are accepted for PDTA115TU,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA115TU,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTA115TU,115?

PDTA115TU,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTA115TU,115 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 PDTA115TU,115?

For technical support, including PDTA115TU,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA115TU,115 requirements.

6.How does Aetrix verify that PDTA115TU,115 is sourced from the original manufacturer or authorized distributors?

All PDTA115TU,115 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 PDTA115TU,115 meets industry standards.

7.What is the process for return or replacement of PDTA115TU,115?

All PDTA115TU,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA115TU,115, 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 PDTA115TU,115 part is unused and in its original packaging.

Return procedure for PDTA115TU,115:

1.Submit a request within 90 days.

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

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