Diodes Incorporated SDT30B100D1-13

Overview

SDT30B100D1-13 from Diodes Incorporated is a 30A, 100V trench Schottky rectifier in TO252 (DPAK) package, featuring 0.85V max forward voltage at 30A/25°C and 120µA max reverse leakage at 100V/25°C. It serves as a high-efficiency freewheel or output rectifier in DC-DC converters and AC-DC adapters operating up to +175°C junction temperature.

For engineers reviewing the SDT30B100D1-13 datasheet, SDT30B100D1-13 pinout, SDT30B100D1-13 application, or SDT30B100D1-13 equivalent, key selection criteria include thermal resistance (2°C/W), soft fast switching behavior, high-temperature leakage stability, RoHS/Green compliance, and TO252 mechanical mounting requirements.

Technical Context

This Schottky rectifier uses trench MOS structure to achieve low VF and reduced reverse recovery charge versus planar Schottkys. Its 100V VRRM rating supports 48V and 36V bus systems with margin, while the 130A IFSM enables robust surge handling in transient-heavy power supplies.

The device operates across –55°C to +175°C with stable IR performance-leakage remains ≤20mA at 100V/125°C-making it suitable for under-hood automotive and industrial power stages where thermal derating must be minimized.

Key Specifications

Pinout & Package

TO252 (DPAK) surface-mount package with exposed cathode pad for thermal dissipation. Three terminals: Anode (pin 1), Cathode (pin 2, large tab), and Cathode (pin 3, second tab connection). Polarity confirmed per Diodes Inc. marking diagram: cathode side marked with band and "SDT30B100D1" text orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with V30100CI-M3/4W and SB3100-T, SDT30B100D1-13 offers the lowest VF at high current and best thermal resistance in an SMT-compatible TO252 package-critical for thermally dense DC-DC modules where efficiency and board area are constrained.

Availability

SDT30B100D1-13 is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.

Supply support for SDT30B100D1-13 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 the Americas.

This device belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in automotive, industrial, and computing applications where low VF and thermal reliability are mandatory.

FAQ

What is the maximum junction temperature and how does it affect derating?

The SDT30B100D1-13 has a rated TJ range of –55°C to +175°C. Per Figure 4, average forward current must be linearly derated from 30A at TC = 110°C to zero at TC = 175°C. At 150°C case temperature, IO drops to ~12A-designers must calculate actual TC using RθJC = 2°C/W and power dissipation to ensure safe operation.

Is this part qualified for automotive applications?

While SDT30B100D1-13 is manufactured in IATF 16949-certified facilities and supports PPAP documentation, it is not formally AEC-Q101 qualified. For automotive use, Diodes recommends contacting their local representative to discuss change control, test reports, and qualification path-especially for under-hood or safety-critical subsystems.

How does the dual-cathode pin configuration improve thermal performance?

Pins 2 and 3 are both cathode connections tied internally to the same die surface and external copper tab. This dual-terminal layout reduces current density at the bond wire interface and improves heat spreading into the PCB thermal pad-verified by the 2°C/W RθJC value measured with standardized heatsink conditions.

Can SDT30B100D1-13 replace a standard FRD in existing designs?

Yes-provided reverse voltage and surge requirements are met. As a Schottky, it has no reverse recovery time (trr ≈ 0), eliminating switching losses and EMI associated with FRDs. However, its 100V VRRM limits use to ≤48V bus systems; also verify that leakage current at elevated temperature does not impact system standby behavior.