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

Nexperia USA Inc. PDTA115EM,315

Name: PDTA115EM,315
Brand: Nexperia USA Inc.
SKU: PDTA115EM,315
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTA115EM,315

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: PDTA115EM,315.pdf

Description:: TRANS PREBIAS

Quantity:: RFQ Add To RFQ list

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Inventory:420,000

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Product details

Overview

PDTA115EM,315 from Nexperia is an NPN digital transistor with integrated 100 kΩ base resistor (R1), 100 kΩ emitter resistor (R2), and ESD protection (IEC 61000-4-2 level 4), designed for 5 V logic-level switching in compact consumer and industrial control circuits.

For engineers reviewing the PDTA115EM,315 datasheet, PDTA115EM,315 pinout, PDTA115EM,315 application, or PDTA115EM,315 equivalent, key selection criteria include input logic compatibility, output saturation voltage at defined I_C, power dissipation limits, ESD robustness, and SOT-323 package thermal performance.

Technical Context

This device integrates two precision thin-film resistors (R1 = R2 = 100 kΩ ±10%) directly into a monolithic NPN transistor die, enabling single-component biasing without external components. It operates with a guaranteed DC current gain (h_FE) of 100 at I_C = 10 mA and V_CE = 5 V.

The built-in ESD protection withstands ±8 kV contact discharge per IEC 61000-4-2 level 4, and the device supports continuous collector current up to 100 mA with P_tot = 300 mW at T_amb = 25 °C in SOT-323 package.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - maximum allowable collector-emitter voltage before breakdown; defines safe operating range in 5–24 V control rails
I_C max	100 mA - absolute maximum continuous collector current; sets upper limit for driving LEDs, relays, or small MOSFET gates
R1 / R2	100 kΩ ±10% - matched internal base and emitter resistors; eliminates need for external bias network in standard inverter configurations
V_CE(sat)	0.15 V @ I_C = 50 mA - low saturation voltage ensures minimal power loss and heat generation during switch-on state
ESD Rating	±8 kV contact (IEC 61000-4-2 level 4) - enables direct handling and board assembly without additional ESD safeguards
P_tot	300 mW @ T_amb = 25 °C - total power dissipation limit; requires derating above 25 °C ambient per specified thermal resistance curve

Pinout & Package

SOT-323 (SC-70) plastic surface-mount package with standard 3-pin configuration: emitter, base, collector arranged in linear order. Compact footprint (2.0 × 2.1 × 0.95 mm) supports high-density PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current return path for NPN transistor	Connected to ground or low-side reference; internal R2 ties this pin to base for feedback biasing
2 (Base)	Control terminal for transistor conduction	Driven by logic signal; internal R1 connects to pin 3, R2 connects to pin 1 - forms integrated voltage divider
3 (Collector)	Output current source terminal	Switches load connected between supply rail and this pin; supports up to 100 mA continuous sink current

Key Features

Feature	Design Value
Integrated dual-resistor bias network	Eliminates 2 external resistors in standard inverter or switch designs, reducing BOM count and layout area
Guaranteed h_FE ≥ 100	Ensures reliable saturation at I_C = 10 mA with standard 5 V TTL/CMOS drive, avoiding marginal turn-on
Low V_CE(sat) = 0.15 V	Reduces conduction loss to ≤7.5 mW at 50 mA, critical for thermally constrained space-constrained applications
ESD protection to IEC 61000-4-2 level 4	Enables direct integration into exposed I/O ports without added TVS diodes or layout shielding

Applications

LED Driver Circuit

Microcontroller GPIO Expander

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V MCU outputs.

IC Role / Device Role / Timing Role: Single-transistor current sink switch with built-in biasing.

Use Value: Eliminates external base resistor; ensures full LED brightness with <0.15 V drop across transistor.

Use Scenario: Adding discrete on/off control for peripheral modules not supported by native MCU pins.

IC Role / Device Role / Timing Role: Logic-level interface buffer and level shifter.

Use Value: Accepts 3.3 V CMOS inputs and switches 5 V loads with guaranteed saturation and no external components.

Industrial Sensor Interface

Consumer Appliance Control

Use Scenario: Isolating and conditioning digital signals from proximity or temperature sensors.

IC Role / Device Role / Timing Role: ESD-hardened signal translator between sensor and host controller.

Use Value: Withstands ±8 kV ESD events common in factory-floor wiring, preventing latch-up or damage during field maintenance.

Use Scenario: Controlling solenoid valves, buzzer drivers, or small relays in white goods.

IC Role / Device Role / Timing Role: Low-power, high-reliability load switch in cost-sensitive assemblies.

Use Value: 300 mW power rating and SOT-323 thermal profile support sustained operation in enclosed cabinets without heatsinking.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
PDTA114EM,315	R1 = 100 kΩ, R2 = 10 kΩ - asymmetric resistor ratio yields higher h_FE but reduced noise immunity	Better suited for low-current switching where fast edge response matters more than ESD margin	Select when driving capacitive loads or requiring faster turn-off due to lower R2 value
PDTC114EM,315	NPN topology with same R1/R2 values but different internal layout; slightly higher V_CE(sat) (0.25 V @ 50 mA)	Compatible in most logic interfaces but less efficient in high-duty-cycle LED or relay drive	Prefer for legacy designs already qualified with PDTC series; verify thermal rise under continuous load

Compared with PDTA115EM,315, PDTA114EM,315 offers faster switching via lower emitter resistance, while PDTC114EM,315 trades 0.1 V higher saturation voltage for broader qualification history - both require revalidation of ESD margin and thermal performance in new designs.

Availability

PDTA115EM,315 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, industrial sensor interfaces, and consumer appliance control requiring stable component supply and long-term production continuity.

Supply support for PDTA115EM,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 essential semiconductors for automotive, industrial, and consumer markets.

The PDTA series belongs to Nexperia's Automotive-Qualified Digital Transistors product line, engineered for logic-level interfacing with integrated biasing and enhanced ESD resilience in space-constrained control nodes.

FAQ

What is the maximum continuous collector current for PDTA115EM,315?

The maximum continuous collector current is 100 mA at T_amb = 25 °C. Derating is required above this temperature per the datasheet's thermal resistance curve (R_thj-amb = 417 K/W). At 70 °C ambient, the practical limit drops to approximately 65 mA to maintain junction temperature below 150 °C.

Can PDTA115EM,315 replace a discrete transistor + two resistors in a standard inverter circuit?

Yes - it is functionally equivalent to a BC847B with 100 kΩ base and emitter resistors. The internal R1–R2 network provides identical biasing behavior, eliminating two passives while maintaining the same logic inversion, gain, and saturation characteristics in 5 V systems.

Does PDTA115EM,315 support 3.3 V microcontroller GPIO drive?

Yes - with guaranteed h_FE ≥ 100 at I_C = 10 mA and V_CE = 5 V, it fully saturates using 3.3 V logic levels. Input threshold is effectively 0.7 V, and the 100 kΩ base resistor draws only ~33 µA from a 3.3 V source, well within typical MCU GPIO sink capability.

Is the SOT-323 package lead-free and RoHS compliant?

Yes - PDTA115EM,315 is manufactured in a lead-free, RoHS-compliant process per EU Directive 2011/65/EU. The SOT-323 package uses matte tin (Sn) termination with no lead content, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life at ≤30 °C/85% RH.

PDTA115EM,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:: -

PDTA115EM,315 FAQ

1.How can I place an order for PDTA115EM,315 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTA115EM,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 PDTA115EM,315 reliable?

The price and inventory of PDTA115EM,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA115EM,315 is usually 5 days.

3.What payment methods are accepted for PDTA115EM,315?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA115EM,315 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTA115EM,315?

PDTA115EM,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTA115EM,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 PDTA115EM,315?

For technical support, including PDTA115EM,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA115EM,315 requirements.

6.How does Aetrix verify that PDTA115EM,315 is sourced from the original manufacturer or authorized distributors?

All PDTA115EM,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 PDTA115EM,315 meets industry standards.

7.What is the process for return or replacement of PDTA115EM,315?

All PDTA115EM,315 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA115EM,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 PDTA115EM,315 part is unused and in its original packaging.

Return procedure for PDTA115EM,315:

1.Submit a request within 90 days.

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

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