Infineon Technologies SMBT2222AE6327HTSA1

Overview

SMBT2222AE6327HTSA1 from Infineon Technologies is an NPN silicon switching transistor in SOT-23 package, rated for 40 V V_CEO, 600 mA I_C, and 330 mW P_tot at T_S ≤ 77 °C. It delivers low V_CE(sat) (0.3 V typ. at I_C = 150 mA, I_B = 15 mA), f_T = 300 MHz, and is AEC-Q101 qualified for automotive signal switching applications.

For engineers reviewing the SMBT2222AE6327HTSA1 datasheet, SMBT2222AE6327HTSA1 pinout, SMBT2222AE6327HTSA1 application, or SMBT2222AE6327HTSA1 equivalent, key selection criteria include saturation voltage performance under pulsed base drive, thermal derating behavior above 77 °C, DC current gain variation across I_C = 100 µA–500 mA, and complementary pairing with SMBT2907A in push-pull configurations.

Technical Context

This NPN transistor operates as a general-purpose medium-speed switch with defined saturation characteristics optimized for digital logic interfacing and low-power load control. Its h_FE ranges from 35 (min at I_C = 100 µA) to 300 (max at I_C = 150 mA), and it maintains usable gain up to 500 mA collector current at V_CE = 10 V.

Thermal design relies on R_thJS ≤ 220 K/W and a junction temperature limit of 150 °C. Switching performance is characterized by t_d ≤ 10 ns, t_r ≤ 25 ns, t_stg ≤ 225 ns, and t_f ≤ 60 ns under specified test conditions (V_CC = 30 V, I_C = 150 mA).

Key Specifications

Pinout & Package

SOT-23 surface-mount plastic package with gull-wing leads, 1.3 mm × 2.9 mm footprint, 1.15 mm height, and Pb-free (RoHS-compliant) finish. Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBT2222ALT1G and BC847BW, SMBT2222AE6327HTSA1 uniquely combines AEC-Q101 qualification, 40 V robustness, and validated thermal performance in SOT-23-making it the preferred choice for automotive body electronics and industrial controls requiring long-term reliability under thermal stress.

Availability

SMBT2222AE6327HTSA1 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input stages, and medical diagnostic fan drivers requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for SMBT2222AE6327HTSA1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.

SMBT2222AE6327HTSA1 belongs to Infineon's discrete bipolar transistor product line, engineered for high-reliability signal switching in automotive and industrial environments where thermal stability and process consistency are critical.

FAQ

Is SMBT2222AE6327HTSA1 pin-compatible with generic 2N2222A variants?

No-SMBT2222AE6327HTSA1 uses SOT-23 package with pinout Base-Emitter-Collector (1-2-3), whereas through-hole 2N2222A follows E-B-C (1-2-3) in TO-18 and many SOIC variants use different pin mappings. Always verify physical layout and thermal pad clearance before substitution.

What is the maximum safe continuous collector current at 100 °C ambient?

At 100 °C ambient, junction temperature must remain ≤150 °C. With R_thJS ≤ 220 K/W and typical PCB copper, derated I_C is approximately 320 mA assuming 0.3 V V_CE(sat), verified using the P_tot vs. T_S curve in Figure 6 of the datasheet.

Does this part support linear (analog) amplification applications?

Yes-its f_T = 300 MHz and h_FE stability across I_C = 100 µA–150 mA support low-noise preamplifier stages, though F = 4 dB at 1 kHz indicates it is optimized for switching rather than ultra-low-noise audio paths.

Can SMBT2222AE6327HTSA1 replace MMBT2222A in existing designs?

Yes-SMBT2222AE6327HTSA1 and MMBT2222A share identical electrical specifications, SOT-23 package, and pinout. The "S" prefix denotes Infineon's standardized automotive-grade variant with full AEC-Q101 qualification and enhanced traceability, making it a drop-in upgrade for reliability-critical applications.