Diodes Incorporated ZLLS410TA

Overview

ZLLS410TA from Diodes Incorporated is a 10 V, 750 mA low-leakage Schottky diode in SOD323 package, featuring 580 mV max forward voltage at 1 A and only 6 µA max reverse leakage at 10 V and 25°C. It operates reliably up to +150°C junction temperature and is optimized for high-efficiency DC-DC conversion in thermally constrained space-constrained power rails.

For engineers reviewing the ZLLS410TA datasheet, ZLLS410TA pinout, ZLLS410TA application, or ZLLS410TA equivalent, key selection criteria include its ultra-low IR at elevated temperatures, thermal robustness in SOD323, VF consistency across 10 mA–1 A, and suitability for reverse blocking in compact 12 V/24 V automotive auxiliary circuits.

Technical Context

This Schottky diode uses a planar epitaxial structure with low-barrier metal-semiconductor junction to achieve sub-0.6 V forward drop while maintaining <6 µA IR at 10 V - a critical trade-off for high-temperature (>85°C) rectification where conventional Schottkys exhibit exponential leakage rise. Its 37 pF capacitance at 10 V enables fast switching in synchronous buck freewheeling paths.

The device's R_θJA of 310°C/W (on 1-inch² copper pad) and 410°C/W (on standard FR-4) directly supports continuous 750 mA operation within thermal limits when ambient stays ≤85°C. Its 1.35 A peak pulsed current rating allows transient surge handling in load-dump or inrush-limited applications.

Key Specifications

Pinout & Package

Package: SOD323 - surface-mount plastic package measuring 1.30 mm × 1.70 mm × 0.90 mm (L × W × H), thermally rated to +150°C, with matte tin-plated leads compliant to MIL-STD-202.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-leakage Schottky diode applications.

Compared with SBM110T3G and RB521S30T2R, ZLLS410TA uniquely balances ultra-low leakage (<6 µA), low V_F (580 mV), and 10 V rating - making it optimal for thermally demanding, low-quiescent-current 5–12 V power domains where both efficiency and standby integrity are critical.

Availability

ZLLS410TA is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and compact DC-DC converter designs requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for ZLLS410TA 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.

ZLLS410TA belongs to Diodes' ZLLS low-leakage Schottky diode family, engineered specifically for high-temperature, low-quiescent-power applications such as automotive infotainment power supplies and industrial IoT sensor nodes where traditional Schottkys fail due to thermal runaway.

FAQ

What is the maximum continuous forward current for ZLLS410TA at +100°C ambient?

At +100°C ambient on a 1-inch² copper pad, ZLLS410TA supports 420 mA continuous forward current. This is derived from its 310°C/W R_θJA, 150°C T_J(max), and thermal derating curve - ensuring junction temperature remains ≤150°C with 420 mA I_O.

Is ZLLS410TA qualified for automotive applications?

ZLLS410TA is qualified to AEC-Q101 for stress testing and JEDEC reliability standards. While not an automotive-grade Q-suffix part, it is used in non-safety-critical automotive modules like HVAC controls and lighting drivers where AEC-Q101 compliance is sufficient per system-level qualification.

How does ZLLS410TA's reverse leakage compare at +85°C versus 25°C?

At VR = 8 V, ZLLS410TA's reverse leakage increases from 0.7 µA at 25°C to 5 µA at +85°C - a 7× rise, yet still within the 6 µA 25°C spec limit at 10 V. This controlled leakage drift enables reliable operation in engine bay-adjacent electronics up to +105°C board temperature.

Can ZLLS410TA replace 1N5819 in existing designs?

ZLLS410TA can replace 1N5819 in SOD323-compatible layouts, offering 220 mV lower V_F (580 mV vs. 800 mV) and 10× lower I_R (6 µA vs. 60 µA). However, its 10 V V_RRM is lower than 1N5819's 40 V - verify reverse voltage margin before substitution in 24 V systems.