Diodes Incorporated G40E100CF5

Overview

G40E100CF5 from Littelfuse Semiconductor is a trench Schottky rectifier diode rated for 100 V reverse voltage and 40 A average forward current at TC = 120°C, featuring ultra-low VF (0.64 V @ 20 A, 125°C), low IR (30 mA @ 100 V, 125°C), and AEC-Q101 Rev_C qualification - deployed in high-efficiency DC-DC converters and AC-DC adapters.

For engineers reviewing the G40E100CF5 datasheet, G40E100CF5 pinout, G40E100CF5 application, or G40E100CF5 equivalent, key selection criteria include thermal resistance (RthJC = 1°C/W), junction capacitance (1100 pF), surge rating (300 A IFSM), and F5 PAK package compatibility with fin-type heatsinks.

Technical Context

This device uses trench Schottky architecture to minimize forward voltage drop while suppressing high-temperature reverse leakage - critical for thermally constrained power stages. Its RthJC of 1°C/W and RthJL of 2°C/W are measured per JESD-51 on a defined fin-type heatsink (32 mm × 85 mm × 24.2 mm).

Electrical behavior is characterized across temperature: VF drops from 0.71 V (25°C) to 0.64 V (125°C) at 20 A, while IR rises from 13.1 µA to 30 mA over the same range - enabling stable operation in automotive-grade ambient conditions (-55°C to +150°C).

Key Specifications

Pinout & Package

F5 PAK molded plastic package: "Green" halogen-free UL 94V-0 compound, MSL Level 1, lead-free, 0.989 g weight. Dimensions: D1 = 10.00 mm (typ), E = 15.00 mm (typ), e = 4.35 mm (ref). Mounting requires fin-type heatsink per JESD-51 test condition.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-40CPH10-M3 and MBR40100CT, G40E100CF5 delivers superior thermal performance (1°C/W vs. ≥1.2°C/W), tighter high-temperature leakage control (30 mA vs. unspecified), and automotive-grade reliability - making it optimal for thermally aggressive, mission-critical power stages.

Availability

G40E100CF5 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial AC-DC adapters, and server PSU output stages requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for G40E100CF5 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

Littelfuse Semiconductor designs high-reliability discrete power components, specializing in TVS, MOSFETs, and Schottky rectifiers for harsh-environment applications.

G40E100CF5 belongs to Littelfuse's AEC-Q101-qualified trench Schottky rectifier product line - engineered specifically for high-efficiency, high-temperature power conversion in automotive and industrial systems.

FAQ

What is the maximum case temperature for continuous 40 A operation?

The G40E100CF5 supports 40 A average forward current only when case temperature (TC) is maintained at ≤120°C, as shown in Figure 1's derating curve. Exceeding this temperature requires linear current reduction - e.g., 30 A at TC = 135°C - to prevent junction overheating beyond 150°C.

Is the F5 PAK package compatible with standard reflow profiles?

Yes - the F5 PAK package is qualified for lead-free reflow per J-STD-020 MSL Level 1, supporting peak temperatures up to 260°C. Its halogen-free molding compound and 0.989 g mass ensure uniform heating and minimal warpage during standard Pb-free reflow cycles.

Does G40E100CF5 require external snubbing in high-frequency LLC converters?

No external snubber is required due to its low junction capacitance (1100 pF) and soft reverse recovery behavior inherent to trench Schottky construction. Measured reverse characteristics (Figure 5) show monotonic leakage rise without snap-back, minimizing voltage overshoot at 100–300 kHz switching.

How does the 300 A IFSM rating translate to real-world surge endurance?

The 300 A rating applies to a single 8.3 ms half-sine surge at 60 Hz (Figure 2), corresponding to worst-case inrush into bulk capacitors or short-circuit fault clearing. At 100,000 cycles, the survivable surge drops to ~150 A - confirming suitability for repeated hot-plug events in modular power systems.