Description:

Square thyristor chip is a kind of thyristor chip, and a four-layer semiconductor structure with three PN junctions, including gate, cathode, silicon wafer and anode. The cathode, silicon wafer and anode are all flat and square shape. One side of the silicon wafer is attached with cathode, another side is attached with anode, a lead hole is opened on the cathode, and the gate is arranged in the hole. The gate, cathode and anode surface are lined with solder material. The main production processes include: silicon wafer cleaning, diffusion, oxidation, photolithography, corrosion, passivation protection, metallization, testing and dicing.

Production portfolio:

• ITAV=25A~200A,

• VRRM=1600V

Gate type:

• Triangle Corner Gate: ITAV=25A~60A

• Round Center Gate: ITAV=110A~200A

Structure:

• Double mesa

• Metallized anode is multi-layer metal TiNiAg or Al+TiNiAg

• Metallized cathode layer is Al or TiNiAg

Features:

• Distributed aluminum diffusion, low on-state voltage drop, high blocking voltage

• Double negative angle shape

• Passivation protection material: SIPOS+GLASS+LTO

• Low IL and wide application

• Thick aluminum layer and easy bonding

• Excellent trigger consistency