Diodes Incorporated ZX5T953GTA

Overview

ZX5T953GTA from Diodes Incorporated is a 100V PNP medium-power transistor in SOT223 package, rated for -5A continuous collector current and -10A peak pulse current, with V_CE(sat) < -90mV at -1A and R_SAT = 60mΩ. It is AEC-Q101 qualified and used in high-side switching, motor driving, and SLIC applications.

For engineers reviewing the ZX5T953GTA datasheet, ZX5T953GTA pinout, ZX5T953GTA application, or ZX5T953GTA equivalent, key selection criteria include guaranteed h_FE ≥25 at -10A, -100V V_CEO, low saturation voltage under high-current drive, and thermal resistance R_θJA = 42°C/W on 52mm×52mm 2oz copper PCB.

Technical Context

This PNP bipolar junction transistor operates in linear and switching modes with specified h_FE down to -10A (min 5), enabling robust current amplification in high-side configurations. Its -100V V_CEO rating and -140V V_CBO support operation in industrial line-switching circuits with transient overvoltage margins.

The device features low V_CE(sat) (-70mV typ at -1A) and tight V_BE(sat) (-985mV typ at -4A), ensuring minimal conduction loss and predictable base drive requirements. Thermal performance is characterized with R_θJL = 10.4°C/W (junction-to-lead), supporting solder-point temperature monitoring in power-stage designs.

Key Specifications

Pinout & Package

Package: SOT223 - Surface-mount plastic package with exposed collector tab for thermal conduction and mechanical anchoring; 0.112g mass; UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power transistor applications.

Compared with MJD127-TP and PN2907A, ZX5T953GTA uniquely combines -100V rating, -5A continuous current, AEC-Q101 qualification, and h_FE ≥25 at -10A - making it the sole option for thermally demanding, automotive-grade high-side switching where gain stability at full load is mandatory.

Availability

ZX5T953GTA is available at Aetrix Electronics and suitable for motor driving, line switching, and high-side switching applications requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability.

Supply support for ZX5T953GTA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.

The ZX5T953GTA belongs to Diodes' high-voltage PNP transistor product line, engineered for robust high-side switching in automotive, industrial, and telecom infrastructure where voltage margin, thermal stability, and AEC-Q101 compliance are essential.

FAQ

What is the maximum allowable junction temperature for ZX5T953GTA?

The absolute maximum junction temperature is +150°C, with continuous operation permitted from -55°C to +150°C. Derating begins at +25°C ambient, with 24mW/°C reduction in power dissipation above that point when mounted on 52mm×52mm 2oz copper. Thermal shutdown is not integrated; external thermal monitoring is required for safety-critical use.

Can ZX5T953GTA be used in parallel configurations?

No - the device lacks built-in emitter ballasting or matched h_FE binning, and its negative temperature coefficient of V_CE(sat) causes current hogging under parallel operation. For higher current, use a single larger-package device or implement active current-sharing circuitry with individual base resistors and sensing.

Is the SOT223 collector tab electrically isolated?

No - the exposed collector tab is internally connected to the collector terminal and must be treated as a live, high-current node. It must be soldered to a dedicated copper pour tied to the collector net; isolation requires insulating thermal pads or dielectric coatings, which degrade thermal performance.

Does ZX5T953GTA support pulsed operation beyond its DC ratings?

Yes - it supports -10A peak pulse current (I_CM) with pulse width ≤300µs and duty cycle ≤2%. Safe operating area (SOA) curves confirm capability up to -100V × -10A for 100µs pulses. Transient thermal impedance data shows junction-to-lead resistance remains below 15°C/W for pulses shorter than 1ms.