Diodes Incorporated FZT751TA

Overview

FZT751TA from Diodes Incorporated is a 60V PNP medium-power transistor in SOT223 package, rated for -3A continuous collector current and -6A peak pulse current, with V_CE(sat) < -300mV at -1A. It serves as a high-current switching device in gate-drive and lighting circuits, delivering low saturation voltage and robust thermal performance on standard PCB copper areas.

For engineers reviewing the FZT751TA datasheet, FZT751TA pinout, FZT751TA application, or FZT751TA equivalent, key selection criteria include verified V_CEO = -60V, h_FE = 70–200 at IC = -50mA to -2A, f_T = 100–140MHz, R_θJA = 62.5°C/W (25mm × 25mm copper), and complementary pairing with FZT651.

Technical Context

This PNP bipolar junction transistor operates in linear and saturated switching modes, supporting fast turn-on (t_on = 40ns) and controlled turn-off (t_off = 450ns) under pulsed conditions (≤300µs, ≤2% duty). Its safe operating area (SOA) is defined up to -60V and -6A with derating above 25°C ambient.

The device uses a planar epitaxial die structure with low R_θJL = 12.9°C/W (junction-to-leads), enabling efficient heat transfer through the collector lead to PCB copper. It meets JEDEC JESD22-A114 HBM ESD rating of 4kV and complies with RoHS 3 and halogen/antimony-free "Green" requirements.

Key Specifications

Pinout & Package

Package: SOT223 (Type DN), surface-mount, 4-pin outline with exposed collector tab (pin 3) for thermal conduction. Molded green compound, UL 94V-0 rated, 0.112g weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZXTN25050DFH and MJD44H11T4G, FZT751TA uniquely balances 60V rating, 3A current, 140MHz f_T, and SOT223 thermal performance-making it optimal for compact, high-frequency gate-drive and LED driver designs requiring both speed and ruggedness.

Availability

FZT751TA is available at Aetrix Electronics and suitable for LED driver stages, MOSFET/IGBT gate driving, and industrial power supply sequencing requiring stable component supply and RoHS-compliant manufacturing.

Supply support for FZT751TA 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The FZT751TA belongs to Diodes' high-reliability power transistor product line, engineered specifically for robust switching in lighting, motor control, and power conversion systems where thermal stability and fast transient response are critical.

FAQ

What is the maximum safe operating temperature for FZT751TA?

The FZT751TA has an operating junction temperature range of -55°C to +150°C. With R_θJA = 62.5°C/W on 25mm × 25mm 2oz copper, it sustains 2W dissipation at 25°C ambient. Derating begins linearly above 25°C, reaching zero power at 150°C junction temperature. Thermal design must ensure T_J stays within this limit under worst-case load and ambient conditions.

Can FZT751TA replace FZT751TC in production?

Yes-FZT751TA and FZT751TC share identical electrical and thermal specifications and differ only in packaging: TA uses a 7-inch, 12mm tape with 1,000 units/reel; TC uses a 13-inch, 12mm tape with 4,000 units/reel. Both are SOT223 (Type DN) devices with identical marking, date code format, and RoHS/Green compliance. No redesign or requalification is required for reel-size substitution.

Is FZT751TA qualified for automotive applications?

The standard FZT751TA is not AEC-Q101 qualified. However, Diodes offers the pin- and footprint-compatible FZT751Q variant, which undergoes full AEC-Q101 stress testing and is specified for automotive lighting and body control modules. Customers requiring automotive qualification must specify FZT751Q-not FZT751TA-for such applications.

How does the SOT223 collector tab affect PCB layout?

The exposed collector tab (Pin 3) must be soldered directly to a minimum 25mm² copper area for thermal performance matching the 2W rating. The tab is electrically connected to the collector; routing isolation around it is unnecessary and counterproductive. Use thermal vias beneath the tab to inner-layer copper planes if multilayer boards are used, and avoid silkscreen or solder mask over the tab area to ensure full solder wetting.