10pcs SFA70UP20DN Rectifier Tubes — 70A 200V, TO-3P Package, For Welding Machines & Power Supplies

If you’re repairing or building welding equipment, power supplies, or other high-current electronics, these SFA70UP20DN rectifier diodes are a handy component to have.

Each diode is rated for 70 amps and 200 volts, housed in a sturdy TO-3P package.

This 10-piece pack gives you plenty of spares for replacements or multiple projects.

They’re commonly used in welding machine circuits, battery chargers, and industrial power units where reliable rectification is needed.

Just make sure to match the specifications to your application — check polarity, heat sinking requirements, and circuit layout before installing.

A practical, bulk-value pack for technicians, hobbyists, or repair shops that work with high-power electronics.