Diodes Incorporated ZXTP23015CFHTA

Overview

ZXTP23015CFHTA from Diodes Incorporated (formerly Zetex Semiconductors) is a PNP medium-power bipolar junction transistor in SOT23 package, rated for V(BR)CES = −15 V, IC(CONT) = −6 A, RCE(SAT) = 20 mΩ typical, VCE(SAT) < −36 mV at −1 A, and PD = 1.25 W on 50 mm × 50 mm PCB. It serves as a high-side switch or gate driver in DC-DC converters and motor control circuits.

For engineers reviewing the ZXTP23015CFHTA datasheet, ZXTP23015CFHTA pinout, ZXTP23015CFHTA application, or ZXTP23015CFHTA equivalent, key selection criteria include its −6 A continuous collector current capability, low −36 mV saturation voltage at −1 A, 270 MHz transition frequency, SOT23 thermal performance with RJA = 100 °C/W, and complementary pairing with ZXTN23015CFH.

Technical Context

This PNP BJT employs an advanced process and optimized SOT23 package to achieve high peak current handling (−10 A pulsed) and low saturation voltage while maintaining robust blocking: −15 V collector-emitter and −6 V emitter-collector breakdown. Its fT = 270 MHz supports fast switching in gate drive and PWM applications.

Thermal design leverages PCB copper area: RJA drops from 171 °C/W (15 mm × 15 mm) to 100 °C/W (50 mm × 50 mm), enabling stable −6 A operation under controlled layout conditions. HFE ranges from 140–560 depending on bias point, supporting both linear and saturated-mode use cases.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount, 3-lead plastic package (JEDEC TO-236AB), footprint-compatible with industry-standard pick-and-place equipment and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBT3906LT1G, ZXTP23015CFHTA delivers 30× higher continuous current and 10× lower saturation voltage, enabling direct high-power switching; versus ZXTN23015CFH, it provides complementary polarity for high-side control where NPN would require level-shifting.

Availability

ZXTP23015CFHTA is available at Aetrix Electronics and suitable for high-side disconnect switches, DC-DC converter gate drivers, and relay/solenoid drivers requiring stable component supply across automotive, industrial automation, and medical equipment programs.

Supply support for ZXTP23015CFHTA 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 acquired Zetex Semiconductors in 2008 and maintains its portfolio of high-performance discrete semiconductors targeting power management and signal conditioning.

This device belongs to Zetex's "medium-power bipolar transistor" product line, engineered specifically for space-constrained, high-current switching applications where SOT23 footprint and thermal efficiency are critical.

FAQ

What is the maximum continuous collector current for ZXTP23015CFHTA under standard PCB conditions?

The ZXTP23015CFHTA supports −6 A continuous collector current when mounted on a 50 mm × 50 mm × 1.6 mm FR4 PCB with 2 oz copper, per datasheet condition (c). Derating applies above +25 °C ambient: linear reduction of 9.6 mW/°C.

Can ZXTP23015CFHTA be used as a direct replacement for standard SOT23 PNP transistors like MMBT3906?

No - while pin-compatible, ZXTP23015CFHTA delivers −6 A continuous current and −36 mV VCE(SAT) at −1 A, far exceeding MMBT3906's −200 mA and −300 mV ratings. Substitution requires verifying PCB thermal design and base drive capability.

What is the recommended base resistor value for switching a 1 A load?

For −1 A collector current and guaranteed saturation, apply IB = −100 mA (10% rule). With VBE(sat) ≈ −0.93 V and typical MCU GPIO high = 3.3 V, RB = (3.3 V − (−0.93 V)) / 0.1 A ≈ 42 Ω. Use 39 Ω ±5% standard value with 0.5 W rating.

Does ZXTP23015CFHTA require external flyback protection when driving inductive loads?

Yes - although V(BR)ECO = −6 V provides limited reverse blocking, inductive kickback can exceed this. A Schottky diode (e.g., PMEG4010CP) from collector to emitter is required to clamp flyback voltage and prevent secondary breakdown.