Diodes Incorporated ZXT10N50DE6TA

Overview

ZXT10N50DE6TA from Diodes Incorporated is a 50V NPN low-saturation switching transistor in SOT26 package, rated for 3A continuous collector current and 6A peak pulse current, with R_CE(SAT) = 75 mΩ and V_CE(SAT) ≤ 200 mV at 1A - optimized for high-efficiency DC-DC power switches and automotive load control circuits.

For engineers reviewing the ZXT10N50DE6TA datasheet, ZXT10N50DE6TA pinout, ZXT10N50DE6TA application, or ZXT10N50DE6TA equivalent, key selection criteria include verified AEC-Q101 qualification, low on-resistance under high-current drive (IC/IB = 10–100), thermal resistance to lead (18.6 °C/W), and safe operating area up to 50V/3A DC.

Technical Context

This NPN bipolar junction transistor features a rugged silicon die optimized for fast switching with t_on = 170 ns and t_off = 750 ns under 10V/1A conditions, and maintains stable h_FE from 100 to 450 across 10 mA–6 A collector current range. Its BV_CEO = 50 V and ESD HBM rating of 4 kV support robust operation in automotive body electronics and industrial I/O modules.

The device operates over –55°C to +150°C, with thermal resistance junction-to-lead (R_θJL) of 18.6 °C/W enabling direct heat conduction through the collector lead - critical for compact PCB layouts where heatsinking is constrained. It is fully RoHS-compliant, halogen- and antimony-free, and qualified per AEC-Q101 stress test standards.

Key Specifications

Pinout & Package

Package: SOT26 - surface-mount, 6-pin plastic package with exposed collector pad for thermal enhancement; dimensions per AP02002 (3.0 × 2.8 × 1.1 mm); moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZXT10N50DZTA and DMT6009LPS-13, ZXT10N50DE6TA uniquely combines AEC-Q101 qualification, dual-pin thermal/current enhancement, and logic-compatible base drive - making it optimal for cost-sensitive, thermally constrained automotive and industrial discrete switching where BJT simplicity and robustness are prioritized.

Availability

ZXT10N50DE6TA is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC output stages, and LED matrix drivers requiring stable component supply, AEC-Q101 compliance, and low-thermal-resistance discrete switching.

Supply support for ZXT10N50DE6TA 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 consumer markets.

ZXT10N50DE6TA belongs to the ZXT series of low-saturation NPN transistors engineered specifically for high-current, high-temperature automotive switching applications where robustness, thermal performance, and AEC-Q101 validation are mandatory.

FAQ

What is the maximum continuous collector current for ZXT10N50DE6TA?

The maximum continuous collector current (I_C) is 3 A at T_A = +25°C with proper PCB thermal relief. Derating applies above 25°C ambient: linear reduction of 8.8 mW/°C for devices mounted on 25 mm × 25 mm 1 oz copper on FR-4, per datasheet Note 5.

Is ZXT10N50DE6TA suitable for high-frequency PWM switching?

Yes - with t_on = 170 ns and t_off = 750 ns at V_CC = 10 V and I_C = 1 A, it supports reliable operation up to 500 kHz in hard-switched topologies. Its f_T of 100–165 MHz ensures sufficient gain margin for stable base drive at these frequencies.

How does the dual-pin configuration improve thermal performance?

The SOT26 package uses Pins 1 & 4 as parallel collectors and Pins 2 & 5 as parallel emitters, effectively halving bondwire inductance and reducing total thermal resistance from junction to PCB copper. This yields R_θJL = 18.6 °C/W - significantly lower than standard SOT23-3 or SOT89-3 alternatives.

Does ZXT10N50DE6TA require a base resistor in microcontroller-driven applications?

Yes - a current-limiting base resistor is required to set I_B for desired I_C. For 3A saturation with h_FE ≥ 40, I_B ≥ 75 mA is needed; with 3.3V GPIO, a 33 Ω resistor delivers ~70 mA after V_BE(SAT) drop (~0.95 V), ensuring full turn-on without overstressing the MCU output.