Diodes Incorporated G12U50F4

Overview

G12U50F4 from Diodes Incorporated is a trench Schottky rectifier optimized for low-voltage, high-frequency DC/DC conversion, with 50 V reverse voltage rating, 12 A average forward current at T_C = 115°C, and low 0.44 V forward voltage at 12 A/25°C. It features AEC-Q101 qualification, halogen- and antimony-free "Green" construction, and a compact F4 surface-mount package.

For engineers reviewing the G12U50F4 datasheet, G12U50F4 pinout, G12U50F4 application, or G12U50F4 equivalent, key selection criteria include its low VF at high IF, thermal resistance (R_thJC = 3°C/W), junction capacitance (750 pF @ 4 V), surge capability (260 A IFSM), and automotive-grade reliability per AEC-Q101 Rev_C.

Technical Context

This Schottky diode uses trench MOS structure to reduce forward voltage drop while maintaining low leakage-typical IR is only 30 µA at 50 V/25°C and 300 µA at 125°C. Its 750 pF junction capacitance at 1 MHz/4 V enables stable operation in high-frequency switching topologies up to several hundred kHz.

The F4 package provides direct case-to-PCB thermal conduction (R_thJC = 3°C/W) and low-profile mounting (max height 1.25 mm), supporting dense power stage layouts. Polarity is marked on the body, and moisture sensitivity is rated Level 1 per J-STD-020.

Key Specifications

Pinout & Package

The G12U50F4 is housed in the F4 surface-mount package-a low-profile, molded plastic case with cathode marking on the body. Dimensions: 5.20 mm × 6.70 mm × 1.15 mm (L × W × H), weight ≈126 mg. Moisture sensitivity level is J-STD-020 Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB1250-TB and SS1250H, the G12U50F4 delivers superior thermal performance (3°C/W), automotive qualification, and smaller footprint-making it the preferred choice for space-constrained, thermally demanding, and safety-critical applications.

Availability

G12U50F4 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, and server point-of-load power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.

Supply support for G12U50F4 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, specializing in high-efficiency power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.

The G12U50F4 belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-frequency, low-loss rectification in automotive and industrial power conversion systems where thermal density and reliability are critical.

FAQ

Is the G12U50F4 suitable for synchronous rectification in GaN-based converters?

Yes-the G12U50F4's low 750 pF junction capacitance and fast recovery characteristics minimize gate drive coupling and dead-time losses when used as a bootstrap or freewheeling diode alongside GaN FETs in high-frequency topologies up to 1 MHz. Its 0.44 V VF also reduces conduction loss during non-overlap intervals.

What is the recommended PCB pad layout for optimal thermal performance?

Diodes specifies a soldering pad layout with ≥200 mm² exposed copper area connected to the cathode terminal via multiple thermal vias (≥6×0.3 mm diameter) to inner ground/power planes. The F4 package's low R_thJC (3°C/W) is only achievable with this layout; insufficient copper reduces effective thermal resistance to >6°C/W.

Does the G12U50F4 require derating at elevated ambient temperatures?

Yes-derating follows the curve in Figure 1 of DS44479: at 100°C case temperature, maximum average forward current drops to ~8.5 A; at 125°C, it falls to ~5.5 A. Designers must calculate actual T_C using R_thJC, power dissipation, and PCB thermal design-not ambient alone.

Can the G12U50F4 replace older planar Schottky diodes like SR1250 in existing designs?

Yes, with validation-G12U50F4 offers lower VF and better thermal performance than SR1250, but its F4 footprint differs from DO-214AC. A board redesign is required for mechanical compatibility; electrical substitution improves efficiency and thermal headroom, especially above 5 A load current.