Nexperia USA Inc. PMBT2222A,235

Overview

PMBT2222A from Nexperia is an AEC-Q101-qualified NPN bipolar junction transistor in SOT23 package, rated for 40 V V_CEO, 600 mA I_C, and DC current gain (h_FE) of 100–300 at 150 mA, used as a general-purpose switching device in automotive body control modules and power management circuits.

For engineers reviewing the PMBT2222A datasheet, PMBT2222A pinout, PMBT2222A application, or PMBT2222A equivalent, key selection criteria include saturation voltage at 150 mA/15 mA drive, thermal resistance (500 K/W), AEC-Q101 qualification status, and SOT23 footprint compatibility with high-density PCB layouts.

Technical Context

This discrete NPN transistor operates in active or saturation mode with V_CE(sat) ≤ 1.2 V at I_C = 150 mA and I_B = 15 mA, and exhibits f_T = 300 MHz at V_CE = 20 V and I_C = 20 mA. Its low C_c = 8 pF and C_e = 25 pF support fast switching with t_on ≤ 35 ns and t_off ≤ 250 ns under defined test conditions.

Designed for surface-mount assembly on FR4 PCBs with standard SOT23 footprint, it delivers stable h_FE across −55 °C to +150 °C ambient, with junction temperature limited to 150 °C and thermal resistance R_th(j-a) = 500 K/W in free air.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) 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.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBT2222ALT1G and BC817-40,215, the PMBT2222A uniquely balances AEC-Q101 compliance, verified h_FE performance at 150 mA, and industry-standard SOT23 pinout-making it the preferred choice for drop-in replacement in automotive and industrial switching where reliability and layout continuity are mandatory.

Availability

PMBT2222A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and USB-C power delivery systems requiring stable component supply across extended product lifecycles.

Supply support for PMBT2222A 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 discrete and logic devices for automotive, industrial, and consumer markets.

The PMBT2222A belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for robust, cost-effective switching in harsh-environment automotive and industrial control applications.

FAQ

Is PMBT2222A suitable for linear amplification?

No-while the datasheet lists "switching and linear amplification" in Applications, the device is optimized for switching: its h_FE variation across I_C (Fig. 2), lack of linearity characterization, and absence of noise figure specs beyond 1 kHz confirm primary design intent is saturated-switch operation-not analog gain staging.

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current is 200 mA (I_BM), but continuous base current must be limited to ensure junction temperature stays ≤150 °C. At I_C = 600 mA and h_FE = 40 (min at 500 mA), required I_B ≈ 15 mA; sustained >20 mA risks thermal runaway without additional heatsinking.

Does PMBT2222A require external protection diodes in inductive load circuits?

Yes-when switching relays, solenoids, or motors, a flyback diode (e.g., BAS216) must be placed across the load. The transistor has no integrated clamp; V_CEO = 40 V provides no margin against inductive kickback exceeding this rating, risking avalanche failure without external suppression.

Can PMBT2222A be used in parallel for higher current handling?

No-unlike MOSFETs, bipolar transistors exhibit negative thermal feedback that causes current hogging. Even matched units will thermally diverge under load, leading to premature failure of one device. For >600 mA, select a single higher-rated transistor or implement active current balancing circuitry.