Diodes Incorporated ZXTP25020CFHTA

Overview

ZXTP25020CFHTA from Diodes Incorporated is a 20V PNP low-power transistor in SOT23 package, rated for -4A continuous collector current, -55mV V_CE(sat) at -1A, and 34mΩ R_CE(sat). It serves as a high-efficiency switching device in MOSFET/IGBT gate drive stages and DC-DC converter power stages where low saturation voltage and fast switching are critical.

For engineers reviewing the ZXTP25020CFHTA datasheet, ZXTP25020CFHTA pinout, ZXTP25020CFHTA application, or ZXTP25020CFHTA equivalent, key selection criteria include verified V_CE(sat) performance at high I_C, thermal resistance under PCB-defined mounting conditions (R_θJA = 69–171°C/W), and complementary pairing with ZXTN25020CFH for push-pull topologies.

Technical Context

This PNP bipolar junction transistor operates in linear and saturated switching modes with guaranteed BV_CEO = -20V and BVECO = -7V, enabling reverse-blocking capability in half-bridge and level-shifting configurations. Its f_T = 285MHz and sub-200ns total switching time (t_d+t_r+t_s+t_f) support high-frequency gate driving up to ~1MHz.

The device delivers h_FE = 85–500 across I_C = -10mA to -4A, with base-emitter saturation voltage V_BE(sat) = -930mV at -4A/-200mA drive, ensuring predictable base current requirements in discrete driver circuits. Thermal design relies on validated R_θJL = 74.95°C/W and JEDEC-compliant derating curves for 15mm×15mm to 50mm×50mm FR4 layouts.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1, weight 0.008g, UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP low-saturation transistor applications.

Compared with MMBT2907ALT1G and DXT3906-7-F, ZXTP25020CFHTA uniquely combines -4A current capability with sub-55mV saturation voltage in SOT23, enabling compact, high-efficiency gate drive without thermal derating penalties typical of lower-performance PNP transistors.

Availability

ZXTP25020CFHTA is available at Aetrix Electronics and suitable for MOSFET/IGBT gate driving, DC-DC converter switching stages, and automotive body control modules requiring stable component supply and JEDEC-qualified reliability.

Supply support for ZXTP25020CFHTA 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 components for automotive, industrial, and computing markets with IATF 16949-certified facilities.

ZXTP25020CFHTA belongs to Diodes' low-voltage PNP transistor product line, engineered specifically for high-current, low-loss switching in power management and gate driver circuits where thermal efficiency and PCB space are constrained.

FAQ

What is the maximum allowable continuous collector current for ZXTP25020CFHTA?

The ZXTP25020CFHTA is rated for -4A continuous collector current when mounted on a 15mm × 15mm × 1.6mm FR4 PCB with 1oz copper in still air. Derating applies above +25°C ambient: power dissipation drops linearly from 0.73W at 25°C to zero at +150°C junction temperature per the published R_θJA = 171°C/W curve.

Can ZXTP25020CFHTA be used in automotive applications?

Yes - ZXTP25020CFHTA is qualified to AEC-Q101 standards and manufactured in IATF 16949-certified facilities. While it lacks the "Q" suffix denoting formal PPAP submission, its JEDEC qualification, green material composition, and -55°C to +150°C operating range meet core automotive reliability requirements for non-safety-critical body electronics and lighting modules.

How does the R_CE(sat) value translate to practical circuit design?

R_CE(sat) = 34mΩ means the transistor behaves like a 34mΩ resistor between collector and emitter when fully saturated. At -2A collector current, this yields -68mV drop - enabling precise current sensing using a 10mΩ shunt in series with the emitter, with minimal offset error from V_CE(sat) variation across temperature and current.

Is there a recommended PCB layout for optimal thermal performance?

For best thermal performance, use a 50mm × 50mm copper pour with 2oz thickness connected directly to the collector pad (Pin 3) via multiple thermal vias. The datasheet confirms R_θJA improves from 171°C/W (15mm × 15mm, 1oz) to 69°C/W under this layout, allowing full -4A operation up to +100°C ambient without heatsink.