Diodes Incorporated ZXTN2010ZTA

Overview

ZXTN2010ZTA from Diodes Incorporated is a 60V NPN low-saturation transistor in SOT89 package, rated for 5A continuous collector current, with V_CE(SAT) < 65mV at I_C = 1A and R_SAT = 30mΩ, used as a high-current power switch in motor drive and gate-driving circuits.

For engineers reviewing the ZXTN2010ZTA datasheet, ZXTN2010ZTA pinout, ZXTN2010ZTA application, or ZXTN2010ZTA equivalent, key selection criteria include saturation voltage at high I_C, thermal resistance (R_θJC = 5.3°C/W), h_FE stability up to 10A, and SOT89 thermal pad layout compatibility.

Technical Context

This NPN bipolar junction transistor is optimized for low-loss switching in medium-power DC applications, featuring a minimum BV_CEO of 60V and guaranteed h_FE ≥ 20 at I_C = 10A - enabling robust current gain under high-load conditions. Its low R_SAT and sub-100mV V_CE(SAT) at 1–2A support efficient operation in thermally constrained layouts.

The device uses an exposed-collector SOT89 package with R_θJC = 5.3°C/W and R_θJL = 3.23°C/W, allowing direct thermal coupling to PCB copper. ESD ratings meet HBM 4kV and MM 400V, supporting industrial-level handling without additional protection circuitry.

Key Specifications

Pinout & Package

Package: SOT89 - surface-mount plastic package with exposed collector pad for enhanced thermal performance; dimensions per Diodes' outline drawing (D2 = 1.71 mm, H = 4.10 mm, E = 2.50 mm); RoHS-compliant matte tin plating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZXTN2010ZTA, ZXTN2020ZTA trades saturation efficiency for higher voltage safety margin, while MMBT4401LT1G lacks both current capacity and thermal capability - making ZXTN2010ZTA uniquely suited for 1–5A power switching where low loss and PCB-integrated cooling are essential.

Availability

ZXTN2010ZTA is available at Aetrix Electronics and suitable for emergency lighting control, DC fan motor drive, and backlight inverter designs requiring stable component supply, automotive-grade reliability, and thermal-efficient SOT89 packaging.

Supply support for ZXTN2010ZTA 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 for industrial, automotive, and consumer markets.

ZXTN2010ZTA belongs to Diodes' ZXT series of high-current, low-V_CE(SAT) bipolar transistors, engineered specifically for thermally demanding power-switching applications where SOT89 footprint and thermal pad integration are critical.

FAQ

What is the maximum safe operating current for ZXTN2010ZTA in continuous DC mode?

The datasheet specifies 5A continuous collector current (I_C) at T_A = +25°C with proper PCB copper area (25mm × 25mm 1oz Cu). Derating begins at 12 mW/°C above +25°C ambient, limiting usable current to ~3.5A at +85°C ambient under the same layout. Peak pulse current reaches 20A for short durations (≤100µs, duty cycle ≤2%).

Can ZXTN2010ZTA be used as a direct replacement for a MOSFET in low-side switching?

No - ZXTN2010ZTA is a bipolar transistor requiring sustained base current (e.g., 100mA at I_C = 1A), unlike MOSFETs that need only gate charge. Its V_CE(SAT) is lower than many logic-level MOSFETs at high current, but base drive complexity and lack of true zero-gate-current state make it unsuitable as a drop-in MOSFET replacement without redesigning the drive circuit.

Is ZXTN2010ZTA qualified for automotive applications?

ZXTN2010ZTA is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. While not pre-qualified for PPAP by default, Diodes supports automotive customers with change control, lot traceability, and qualification documentation upon request - making it suitable for non-safety-critical automotive subsystems like cabin lighting and HVAC fans.

How should the exposed collector pad on the SOT89 package be connected on the PCB?

The exposed collector pad must be soldered directly to a dedicated copper pour tied to the collector net - not left floating or grounded. For rated 1.5W power dissipation, Diodes specifies a minimum 25mm² (5mm × 5mm) area of 1oz copper on the top layer, thermally connected via ≥4 thermal vias (0.3mm diameter) to inner or bottom-layer planes. Smaller pads reduce thermal performance proportionally.