Diodes Incorporated SB350-T

Overview

SB350-T from Diodes Incorporated is a 3.0A, 50V Schottky barrier rectifier in DO-201AD package, featuring 0.74V forward voltage at 3.0A, 80A non-repetitive surge capability, and IEC 61000-4-2 ±15kV ESD protection. It serves as a low-loss freewheeling diode in DC-DC converters and polarity protection element in 12V/24V automotive power rails.

For engineers reviewing the SB350-T datasheet, SB350-T pinout, SB350-T application, or SB350-T equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance (R_θJA = 30°C/W), peak reverse voltage rating, surge robustness, and RoHS-compliant tin-plated terminals for lead-free reflow compatibility.

Technical Context

This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and sustain repetitive 50V DC blocking with <0.5mA reverse leakage at 25°C. Its low junction-to-lead thermal resistance (10°C/W) enables high-current operation without external heatsinking in compact PCB layouts.

The device operates across –65°C to +125°C junction temperature range and maintains stable forward conduction under 8.3ms half-sine surge events up to 80A - critical for inductive load switching in motor drivers and solenoid controls.

Key Specifications

Pinout & Package

Package: DO-201AD molded plastic case (UL 94V-0), cathode indicated by band, 1.1g weight, tin-plated terminals solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-3EJH05-M3/45 and SB350-E3/54, SB350-T delivers optimal balance of SMT manufacturability, thermal performance (30°C/W), and active production status - making it preferred for new 12–24V embedded power designs requiring BOM stability.

Availability

SB350-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer DC-DC power supplies requiring stable component supply and RoHS-compliant packaging.

Supply support for SB350-T 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

SB350-T belongs to the SB3xx Schottky rectifier product line, engineered for high-efficiency, low-voltage DC power conversion in cost-sensitive industrial and automotive systems where thermal and ESD robustness are mandatory.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The SB350-T has a maximum junction temperature of +125°C. Continuous operation at full 3.0A load requires maintaining junction temperature ≤125°C via adequate PCB copper area (minimum 63.5mm × 63.5mm pad) and ambient temperature ≤70°C, per the derating curve in Figure 1 of DS23023 Rev. 12.

Does SB350-T meet AEC-Q101 stress test requirements?

SB350-T is not individually AEC-Q101 qualified, but Diodes Incorporated states that automotive-grade versions of this family are available upon request with PPAP documentation. Standard SB350-T is built in IATF 16949-certified facilities and meets AEC-Q101 guidance for temperature cycling and HTRB, though formal qualification requires part-specific testing.

Can SB350-T replace SB340-T in an existing design?

Yes - SB350-T is a direct upgrade from SB340-T, offering identical package, pinout, and thermal characteristics but with higher 50V peak reverse voltage (vs. 40V). No layout or thermal redesign is needed, and the higher V_RRM improves margin against load-dump transients in 24V systems.

What is the typical reverse recovery time of SB350-T?

Schottky rectifiers like SB350-T have no minority-carrier storage, so reverse recovery time is effectively zero. The device exhibits only junction capacitance discharge (typical C_T = 80pF at 50V), enabling clean switching in high-frequency (>100kHz) topologies without reverse recovery losses or ringing.