Taiwan Semiconductor Corporation SR806H

Overview

SR806H from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 60V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (0.70 V at 8A, 25°C), high surge capability (150 A), and junction temperature up to +150°C. It serves as a primary output rectifier in automotive-grade DC/DC converters and industrial SMPS where efficiency and reliability under thermal stress are critical.

For engineers reviewing the SR806H datasheet, SR806H pinout, SR806H application, or SR806H equivalent, key selection factors include its 60 V repetitive peak reverse voltage, 10 mA reverse leakage at 100°C, 10,000 V/µs dv/dt rating, and AEC-Q101 qualification for automotive power systems.

Technical Context

This single-die Schottky rectifier uses a guard ring structure to enhance overvoltage robustness and supports continuous forward current of 8 A with thermal resistance R_θJA = 40°C/W. Its low VF minimizes conduction loss, while the 150 A I_FSM rating enables reliable operation during transient load surges.

The device operates across -55°C to +150°C junction temperature range and meets JESD201 Class 2 whisker resistance and RoHS/halogen-free requirements per IEC 61249-2-21 - confirming suitability for under-hood automotive environments.

Key Specifications

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating. Weight ≈ 1.10 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-8EWH06FN-M3/45 and SB860-E3/45, SR806H uniquely combines AEC-Q101 qualification, +150°C operation, and 0.70 V VF - making it the only option validated for safety-critical automotive power conversion where both reliability and thermal headroom are mandatory.

Availability

SR806H is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, and telecom power adapters requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SR806H 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.

The SR802–SR820 family was designed specifically for high-reliability, high-efficiency rectification in automotive and industrial power supplies - emphasizing AEC-Q101 compliance, thermal robustness, and low-loss performance across 20–200 V voltage grades.

FAQ

What is the maximum junction temperature rating for SR806H?

The SR806H has a maximum junction temperature (T_J) rating of +150°C, verified per its AEC-Q101 qualification and thermal testing. This allows uninterrupted operation in high-ambient environments such as automotive engine compartments or sealed industrial enclosures without derating the 8 A continuous current rating below 85°C ambient.

Is SR806H pin-compatible with other parts in the SR802–SR820 series?

Yes, all SR802–SR820 devices share identical DO-201AD packaging, anode/cathode pinout, and mechanical dimensions. The SR806H maintains the same lead spacing, body length, and cathode band marking as SR802, SR805, and SR810 - enabling direct board-level substitution within the same voltage grade group when thermal and electrical margins permit.

Does SR806H meet automotive qualification standards?

Yes, SR806H is explicitly AEC-Q101 qualified, as confirmed in the ordering code suffix "H" and documented in Taiwan Semiconductor's J2105 specification revision. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock - validating its suitability for automotive powertrain and body electronics applications.

What is the forward voltage of SR806H at 8 A and 100°C junction temperature?

The SR806H forward voltage is not specified at 100°C in the datasheet; only the 25°C value (0.70 V max) and reverse leakage (10 mA at 100°C) are provided. However, typical VF increases ~0.2 mV/°C, so at 100°C, SR806H VF is estimated near 0.77 V - still significantly lower than silicon diodes and consistent with Schottky behavior.

How does the guard ring feature improve reliability in SR806H?

The guard ring in SR806H mitigates edge breakdown under high dv/dt or localized overvoltage conditions by distributing electric field stress away from the die periphery. In practice, this extends operational lifetime in automotive systems exposed to load dump transients or EMI-induced voltage spikes - a key factor behind its AEC-Q101 qualification and use in safety-critical 48 V DC/DC converters.