Infineon Technologies PZTA92E6433HTMA1

Overview

PZTA92E6433HTMA1 from Infineon Technologies is a PNP silicon high-voltage bipolar junction transistor rated for V_CEO = 300 V, V_CBO = 300 V, and I_C = 500 mA, with low V_CE(sat) = 0.5 V at I_C = 20 mA / I_B = 2 mA, housed in an SOT223 surface-mount package. It serves as a high-voltage switching or linear amplification device in industrial power supplies and relay drivers.

For engineers reviewing the PZTA92E6433HTMA1 datasheet, PZTA92E6433HTMA1 pinout, PZTA92E6433HTMA1 application, or PZTA92E6433HTMA1 equivalent, key selection criteria include verified breakdown voltage margin, saturation voltage under defined drive conditions, thermal resistance (R_thJS = 17 K/W), and complementary NPN pairing with PZTA42 in high-side switch designs.

Technical Context

This PNP BJT operates in active or saturation regions for DC-coupled high-voltage switching, supporting collector-emitter blocking up to 300 V with guaranteed I_CBO ≤ 250 nA at 25°C and ≤ 20 µA at 150°C. Its f_T = 100 MHz enables moderate-frequency amplification when biased at I_C = 20 mA and V_CE = 10 V.

The device uses a planar epitaxial structure with emitter-base breakdown voltage V_(BR)EBO ≥ 5 V, ensuring stable base control under reverse-biased conditions. Thermal derating follows a defined P_tot vs. T_S curve, with full 1.5 W dissipation only at T_S = 124°C and R_thJS = 17 K/W enabling predictable junction temperature estimation.

Key Specifications

Pinout & Package

Package: SOT223 - Surface-mount plastic package with exposed collector tab for enhanced thermal conduction and mechanical stability in power applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage PNP transistor applications.

Compared with BCV62,115 and MJD2955G, PZTA92E6433HTMA1 uniquely balances 300 V blocking, 500 mA current, and SOT223 thermal performance-making it the sole option among the three for compact, high-voltage, medium-power discrete switching.

Availability

PZTA92E6433HTMA1 is available at Aetrix Electronics and suitable for industrial relay drivers, offline AC-DC power supplies, and high-voltage level shifters requiring stable component supply and long-term manufacturability.

Supply support for PZTA92E6433HTMA1 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, and industrial control ICs and discrete devices.

The PZTA92 belongs to Infineon's high-voltage bipolar transistor product line, designed specifically for robust, cost-effective switching in industrial power conversion and control systems where reliability under sustained high-voltage stress is critical.

FAQ

What is the maximum allowable junction temperature for PZTA92E6433HTMA1?

The absolute maximum junction temperature (T_j) is 150°C, as specified in the Infineon datasheet. Operation beyond this limit risks permanent degradation of h_FE, increased leakage, and accelerated failure. Derating curves assume T_S = 124°C for full 1.5 W dissipation; actual T_j must be calculated using R_thJS = 17 K/W and measured solder point temperature.

Is PZTA92E6433HTMA1 pin-compatible with PZTA42?

No - PZTA92 (PNP) and PZTA42 (NPN) share identical SOT223 packaging and pinout (B-C-E-C), but their complementary polarity means they cannot be substituted without reversing biasing and signal logic. Their matched parameters (V_CEO/V_EBO, h_FE, f_T) enable coordinated use in push-pull topologies, not interchangeability.

Does PZTA92E6433HTMA1 require a heatsink in typical applications?

A dedicated heatsink is not required for ≤0.8 W continuous dissipation on standard 1-oz copper FR-4 with 25 mm² exposed pad area. The SOT223 package's R_thJS = 17 K/W allows direct thermal transfer to the PCB; however, forced airflow or thermal vias are recommended above 1 W to maintain T_j < 125°C under worst-case ambient conditions.

What is the meaning of the 'E6433' suffix in the part number?

E6433 denotes the packing code: tape-and-reel format on a 330 mm diameter reel containing 4,000 units. This differs from E6327 (180 mm reel, 1,000 units) and is used for high-volume production orders. The 'HTMA1' suffix indicates Infineon's internal assembly and test lot traceability, not a functional variant.