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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. PMBT2222A-QR

Name: PMBT2222A-QR
Brand: Nexperia USA Inc.
SKU: PMBT2222A-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PMBT2222A-QR

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PMBT2222A-QR.pdf

Description:: TRANS NPN 40V 0.6A TO-236AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,878

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Product details

Overview

PMBT2222A-QR from Nexperia is an AEC-Q101-qualified NPN bipolar junction transistor in SOT23 package, designed for automotive-grade switching and linear amplification. It delivers 600 mA collector current, 40 V V_CEO, DC current gain (h_FE) of 35–300 at I_C = 0.1–500 mA, and operates across –65 °C to +150 °C ambient temperature.

For engineers reviewing the PMBT2222A-QR datasheet, PMBT2222A-QR pinout, PMBT2222A-QR application, or PMBT2222A-QR equivalent, this page provides verified electrical parameters, thermal behavior under FR4 PCB mounting, switching timing (t_on ≤ 35 ns, t_off ≤ 250 ns), saturation voltage (V_CEsat ≤ 1.2 V at I_C = 150 mA), and automotive qualification evidence.

Technical Context

This discrete NPN transistor operates as a low-voltage, medium-current switch with base-driven control logic. Its h_FE spans 35–300 depending on I_C and temperature, enabling stable biasing in both active and saturation regions across automotive temperature extremes.

It exhibits V_BEsat ≤ 1.2 V and V_CEsat ≤ 1.2 V at I_C/I_B = 10, supporting efficient drive in relay drivers and LED load switches. Thermal resistance R_th(j-a) is 500 K/W on standard FR4 PCB, defining power derating above 25 °C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - Maximum safe collector-emitter voltage with base open; defines rail compatibility in 12 V/24 V automotive systems.
I_C (continuous)	600 mA - Continuous collector current rating; supports driving small solenoids, fans, or logic-level loads without forced cooling.
h_FE	35–300 - DC current gain range across I_C = 0.1–500 mA and T_amb = –55 to +150 °C; enables predictable base resistor selection.
V_CEsat	≤1.2 V at I_C = 150 mA, I_B = 15 mA - Low saturation voltage minimizes conduction loss and self-heating in switching applications.
t_off	≤250 ns - Turn-off time under defined test conditions (I_Boff = –15 mA); critical for PWM frequency up to ~1 MHz in motor control.
R_th(j-a)	500 K/W - Junction-to-ambient thermal resistance on standard FR4 PCB; dictates 250 mW max power dissipation at T_amb ≤ 25 °C.

Pinout & Package

SOT23 plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body; optimized for automated reflow assembly on FR4 PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires series resistor to limit I_B ≤ 200 mA peak and ensure h_FE-based saturation.
2	Emitter (E)	Reference terminal for current flow; connected to ground or low-side return path in common-emitter configurations.
3	Collector (C)	High-side output node; sinks load current up to 600 mA; must be routed with adequate copper area for thermal management.

Key Features

Feature	Design Value
AEC-Q101 qualified	Stress-tested per automotive discrete semiconductor standard; validated for under-hood and chassis-mounted use.
Low V_CEsat (≤1.2 V)	Reduces power loss and heat generation in high-duty-cycle switching, extending reliability in thermally constrained layouts.
Wide operating temperature	–65 °C to +150 °C ambient range ensures functionality in cold-start and engine-bay thermal environments.
Fast switching (t_off ≤ 250 ns)	Enables efficient PWM control of inductive loads without excessive switching loss or voltage overshoot.

Applications

Automotive Door Module

Engine Control Unit (ECU) Signal Conditioning

Use Scenario: Driving window lift motors and door lock actuators in 12 V battery-powered modules.

IC Role / Device Role / Timing Role: NPN switch controlling ground path for resistive/inductive loads; operates in saturation with <1.2 V drop.

Use Value: AEC-Q101 qualification ensures long-term reliability under vibration and thermal cycling; 600 mA rating covers typical actuator peak currents.

Use Scenario: Level-shifting and buffering sensor signals (e.g., throttle position, coolant temp) before ADC input.

IC Role / Device Role / Timing Role: Linear amplifier in common-emitter configuration; biased for low-distortion analog gain at 100 µA–1 mA collector current.

Use Value: h_FE stability over –40 to +125 °C maintains signal fidelity; low noise figure (4 dB @ 1 kHz) preserves SNR.

LED Headlamp Dimming Circuit

Body Control Module (BCM) Relay Driver

Use Scenario: PWM-controlled current sink for high-brightness LED strings in adaptive front lighting systems.

IC Role / Device Role / Timing Role: Fast-switching NPN transistor modulating LED current at 1–10 kHz; operates in hard saturation.

Use Value: t_off ≤ 250 ns limits dead-time distortion; V_CEsat ≤ 1.2 V keeps forward voltage drop minimal for efficiency.

Use Scenario: Driving 12 V automotive relays (e.g., HVAC blower, horn, wiper) from microcontroller GPIO pins.

IC Role / Device Role / Timing Role: Low-side switch interfacing MCU outputs to relay coils; handles inductive kickback via flyback diode.

Use Value: 40 V V_CEO withstands relay coil flyback spikes; 800 mA I_CM peak rating absorbs turn-on surge currents.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC817-40-Q	Higher h_FE (250–630), same V_CEO (45 V), identical SOT23 package and AEC-Q101 qualification.	Better suited for low-base-drive designs where I_B must be minimized; slightly higher cost.	Select when tighter h_FE tolerance or lower base current is required without changing layout.
PMBT2222A,115	Non-automotive grade (no AEC-Q101), otherwise identical electrical specs and SOT23 package.	Limited to non-safety-critical consumer or industrial applications; not approved for automotive production.	Choose only for cost-sensitive prototypes or non-automotive end equipment where qualification is not mandated.

Compared with BC817-40-Q and PMBT2222A,115, the PMBT2222A-QR offers balanced h_FE, guaranteed automotive qualification, and proven thermal performance on FR4-making it optimal for production-grade automotive switching where reliability and supply continuity are mandatory.

Availability

PMBT2222A-QR is available at Aetrix Electronics and suitable for automotive door modules, engine control units, LED headlamp dimming circuits, and body control module relay drivers requiring stable component supply across extended temperature ranges and lifecycle assurance.

Supply support for PMBT2222A-QR 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 semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.

The PMBT2222A-QR belongs to Nexperia's AEC-Q101-qualified discrete transistor portfolio, engineered specifically for robust, high-volume automotive switching and amplification where thermal resilience and qualification compliance are non-negotiable.

FAQ

Is PMBT2222A-QR pin-compatible with the legacy 2N2222A through-hole transistor?

No. PMBT2222A-QR uses SOT23 surface-mount packaging with Base–Emitter–Collector pinout (1–2–3), while 2N2222A uses TO-18 metal can with Emitter–Base–Collector (1–2–3) ordering. Layout redesign and footprint adaptation are required; no mechanical or soldering compatibility exists.

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current is 200 mA, but continuous I_B must be limited by thermal design. At I_C = 600 mA and h_FE = 35, minimum I_B ≈ 17 mA; practical continuous I_B should remain ≤ 50 mA to avoid junction overheating given R_th(j-a) = 500 K/W.

Does PMBT2222A-QR require a flyback diode when switching inductive loads?

Yes. Although V_CEO = 40 V exceeds typical 12 V automotive rail, relay or motor coil flyback voltages can exceed this during turn-off. A reverse-biased Schottky diode (e.g., PMEG3010AEJ) across the load is mandatory to clamp inductive kick and prevent V_CB > 75 V breakdown.

How does thermal performance change if mounted on a 2-layer versus 4-layer PCB?

R_th(j-a) = 500 K/W assumes single-sided FR4 with standard SOT23 footprint. On a 2-layer board with internal ground plane, R_th(j-a) improves to ~350 K/W; on a 4-layer board with thermal vias and copper pours, it may reach ~250 K/W-enabling higher continuous I_C before derating.

PMBT2222A-QR Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 600 mA

Voltage - Collector Emitter Breakdown (Max):: 40 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 50mA, 500mA

Current - Collector Cutoff (Max):: 10nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 10V

Power - Max:: 250 mW

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PMBT2222A-QR FAQ

1.How can I place an order for PMBT2222A-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for PMBT2222A-QR 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 PMBT2222A-QR reliable?

The price and inventory of PMBT2222A-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMBT2222A-QR is usually 5 days.

3.What payment methods are accepted for PMBT2222A-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMBT2222A-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMBT2222A-QR?

PMBT2222A-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PMBT2222A-QR 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 PMBT2222A-QR?

For technical support, including PMBT2222A-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMBT2222A-QR requirements.

6.How does Aetrix verify that PMBT2222A-QR is sourced from the original manufacturer or authorized distributors?

All PMBT2222A-QR 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 PMBT2222A-QR meets industry standards.

7.What is the process for return or replacement of PMBT2222A-QR?

All PMBT2222A-QR units undergo pre-shipment inspection (PSI). If there is an issue with PMBT2222A-QR, 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 PMBT2222A-QR part is unused and in its original packaging.

Return procedure for PMBT2222A-QR:

1.Submit a request within 90 days.

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

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