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

Nexperia USA Inc. PDTA123YQBZ

Name: PDTA123YQBZ
Brand: Nexperia USA Inc.
SKU: PDTA123YQBZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTA123YQBZ

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: 3-XDFN Exposed Pad

Datasheet:: PDTA123YQBZ.pdf

Description:: PDTA123YQB/SOT8015/DFN1110D-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PDTA123YQB from Nexperia is a 50 V, 100 mA PNP resistor-equipped transistor (RET) in a DFN1110D-3 (SOT8015) leadless package with side-wettable flanks. It integrates R1 = 2.2 kΩ and R2 = 10 kΩ bias resistors, functions as a single-stage digital switch for IC input control or low-power load switching, and delivers V_CE(sat) ≤ −150 mV at I_C = −10 mA / I_B = −0.5 mA.

For engineers reviewing the PDTA123YQB datasheet, PDTA123YQB pinout, PDTA123YQB application, or PDTA123YQB equivalent, this device serves as a space-optimized, AOI-compatible replacement for BC847-series transistors in digital logic interfacing, level translation, and microcontroller GPIO-driven switching circuits where built-in biasing reduces external component count.

Technical Context

This PNP RET uses an integrated dual-resistor network (R1 to base, R2 from base to emitter) to provide fixed-current biasing, eliminating external base resistors. Its internal transistor exhibits h_FE ≥ 35 at V_CE = −5 V and I_C = −5 mA, with f_T = 180 MHz under specified conditions.

The DFN1110D-3 package enables ultra-thin mounting (0.48 mm body height) and supports automated optical inspection of solder joints via side-wettable flanks. Thermal resistance R_th(j-a) is 298 K/W on 70 µm copper FR4 PCB - optimized for compact, thermally constrained digital board layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum safe collector-emitter voltage with open base - defines off-state blocking capability in high-side switch configurations.
I_O	−100 mA: Continuous DC output current rating - supports driving logic inputs, LEDs, or small relays without external current limiting.
R1	2.2 kΩ ±30%: Input bias resistor value - sets base current magnitude when driven from 3.3 V or 5 V logic rails.
R2/R1 ratio	4.5 (typ): Ratio determines internal feedback strength - stabilizes operating point against h_FE variation across temperature and unit spread.
V_CE(sat)	≤ −150 mV at I_C = −10 mA / I_B = −0.5 mA: Low saturation voltage ensures minimal power loss and reliable logic-level output swing.
f_T	180 MHz: Transition frequency of internal transistor - supports fast digital switching up to ~10–20 MHz with adequate margin.
Package	DFN1110D-3 (SOT8015): 1.1 mm × 1.0 mm × 0.48 mm, 3-terminal leadless package with side-wettable flanks - enables 0.65 mm pitch fine-pitch assembly and AOI verification.

Pinout & Package

DFN1110D-3 (SOT8015) is a 3-terminal, leadless, ultra-thin surface-mount package with side-wettable flanks for automated optical inspection. Dimensions: 1.1 mm × 1.0 mm × 0.48 mm body, 0.65 mm pitch.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base)	Connected internally to R1; accepts logic-level drive signal - simplifies interface with MCU GPIO or gate outputs.
2	Ground (emitter)	Emitter terminal tied to system ground - establishes reference for PNP switching action and enables low-side return path.
3	Output (collector)	Switched high-side output node - connects to load (e.g., LED anode or IC input) referenced to positive rail.

Key Features

Feature	Design Value
Integrated bias network	R1 = 2.2 kΩ + R2 = 10 kΩ eliminates two external resistors - reduces BOM count and layout area by ~1.5 mm² per instance.
Low profile packaging	0.48 mm max height - enables use in ultra-thin consumer electronics and stacked PCB assemblies where Z-height is constrained.
Side-wettable flanks	Exposed copper on package edges - allows automated optical inspection of solder joint integrity without X-ray.
100 mA output capability	Rated continuous I_C supports direct driving of multiple 74LVC inputs or small-signal loads without buffering.
−150 mV V_CE(sat)	Ensures <150 µW dissipation at 1 mA load - critical for battery-powered systems requiring ultra-low quiescent loss.

Applications

Microcontroller GPIO Interface

Logic-Level Translation

Use Scenario: Driving enable inputs of voltage regulators or reset lines of peripherals from 3.3 V MCU GPIOs.

IC Role / Device Role / Timing Role: PNP switch configured as active-low level shifter - pulls target input low when MCU pin is low.

Use Value: Eliminates need for discrete base resistor and pull-up, reducing footprint and improving signal rise/fall time consistency.

Use Scenario: Converting 1.8 V logic outputs to 5 V-tolerant input levels for legacy ICs.

IC Role / Device Role / Timing Role: High-side level translator using emitter-follower configuration with grounded emitter.

Use Value: Achieves sub-100 ns propagation delay with no external passive components - maintains timing integrity in mixed-voltage systems.

LED Indicator Control

Small-Load Switching

Use Scenario: Controlling status LEDs on portable devices powered from 3.3 V or 5 V rails.

IC Role / Device Role / Timing Role: Constant-current sink switch - collector connected to LED cathode, anode to supply.

Use Value: Delivers stable 10–20 mA LED current with <±5% variation over temperature due to R2 feedback stabilization.

Use Scenario: Enabling/disabling sensor modules or communication interfaces in IoT edge nodes.

IC Role / Device Role / Timing Role: Power-domain enable switch - controls V_CC path to downstream circuitry.

Use Value: Limits inrush current and provides clean power sequencing with <200 mV dropout at 50 mA load.

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
PDTC123YQB	NPN complement with identical R1/R2 values and package - requires inverted logic drive and low-side switching topology.	Suitable only where load is grounded and control signal must sink current - not drop-in for high-side PNP configurations.	Select when existing design uses NPN logic architecture or requires common-emitter gain stage instead of emitter-follower.
BC847B	Discrete PNP transistor without integrated resistors - requires external R_B and R_E; h_FE = 200–450 (vs. RET's stabilized β ≈ 45).	Offers higher current gain but increases component count, layout area, and sensitivity to h_FE variation across batches/temperature.	Choose only if precise analog amplification or variable bias tuning is required - otherwise RET reduces design risk and cost.

Compared with PDTC123YQB and BC847B, PDTA123YQB uniquely combines PNP polarity, integrated biasing, and ultra-compact packaging - delivering lowest assembly cost and highest reliability in fixed-ratio digital switching applications where logic inversion or external bias tuning is unnecessary.

Availability

PDTA123YQB is available at Aetrix Electronics and suitable for microcontroller interface design, LED indicator control, logic-level translation, and small-load switching requiring stable component supply and consistent parametric performance across production lots.

Supply support for PDTA123YQB 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

This part belongs to Nexperia's Resistor-Equipped Transistor (RET) product line - engineered specifically to replace discrete transistor + resistor combinations in digital logic interfacing, reducing design complexity and manufacturing cost.

FAQ

What is the maximum ambient temperature for continuous operation?

The PDTA123YQB is rated for continuous operation from −55 °C to +150 °C ambient temperature. At full 100 mA load, derating begins above +75 °C per the published power derating curve - with 420 mW max dissipation on 70 µm copper FR4 at 25 °C ambient.

Can this device be used in linear amplifier configurations?

No - the PDTA123YQB is optimized for digital switching, not analog amplification. Its integrated R1/R2 network fixes bias conditions, and h_FE is specified only at one operating point (I_C = −5 mA). Small-signal gain and linearity are not characterized or guaranteed.

Is the DFN1110D-3 package compatible with standard reflow profiles?

Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D moisture sensitivity level 1 (MSL1) and JEDEC-standard lead-free reflow profiles. The recommended stencil thickness is 0.1 mm, and solder land dimensions are provided in Figure 12 of the datasheet.

How does the R2/R1 ratio affect switching behavior?

The R2/R1 ratio of 4.5 provides negative feedback that stabilizes the operating point against h_FE variation and temperature drift. This ensures consistent V_CE(sat) and turn-off speed across units and conditions - unlike discrete transistors where β spread causes significant performance dispersion.

PDTA123YQBZ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: 3-XDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP - Pre-Biased

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

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

Resistor - Base (R1):: 2.2 kOhms

Resistor - Emitter Base (R2):: 10 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 35 @ 5mA, 5V

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

Current - Collector Cutoff (Max):: 100nA

Frequency - Transition:: 180 MHz

Power - Max:: 340 mW

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: DFN1110D-3

PDTA123YQBZ FAQ

1.How can I place an order for PDTA123YQBZ through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTA123YQBZ 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 PDTA123YQBZ reliable?

The price and inventory of PDTA123YQBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA123YQBZ is usually 5 days.

3.What payment methods are accepted for PDTA123YQBZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA123YQBZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTA123YQBZ?

PDTA123YQBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTA123YQBZ 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 PDTA123YQBZ?

For technical support, including PDTA123YQBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA123YQBZ requirements.

6.How does Aetrix verify that PDTA123YQBZ is sourced from the original manufacturer or authorized distributors?

All PDTA123YQBZ 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 PDTA123YQBZ meets industry standards.

7.What is the process for return or replacement of PDTA123YQBZ?

All PDTA123YQBZ units undergo pre-shipment inspection (PSI). If there is an issue with PDTA123YQBZ, 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 PDTA123YQBZ part is unused and in its original packaging.

Return procedure for PDTA123YQBZ:

1.Submit a request within 90 days.

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

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