New Industry Products

International Rectifier Introduces New DF Series of Bridge Rectifiers

August 13, 2000 by Jeff Shepard

International Rectifier (IR, El Segundo, CA) has introduced the new DF Series compact 1A, single-phase, full-wave bridge rectifiers with power-to-volume ratios designed to provide greater power density in high-volume industrial and consumer electronic devices. Typical applications include compact power supplies and battery chargers for cellular phones, notebook computers, and other portable and rechargeable devices.

According to IR, the new DF Series bridge rectifiers are compatible with all standard PC board assembly and soldering techniques. Soldering can be done below 245 degrees C to minimize solder oxidation without losing meniscus and fillet formation. The new rectifiers are also suitable for high-temperature soldering (250 degrees to 260 degrees C for 8 to 10 seconds.) These compact bridges offer unique power-to-volume ratios with stable operation in a temperature range from -55 degrees to 150 degrees C. The package has high thermal conductivity in an electrically insulated, UL-approved case. The junction-to-case thermal resistance is among the best in the market with 60 percent Celsius per watt. The maximum repetitive peak reverse-voltage range is 50V to 1,000V.

The new bridge rectifiers are made with glass-passivated die and encapsulated in either a four-pin through hole (D-70) or a surface-mount (D-71) dual in-line package. The through-hole devices are shipped in tubes, while surface-mount devices are supplied in tape-and-reel. These bridge rectifiers are designed for input circuits in industrial and consumer equipment. They are encapsulated with QMFZ2 molding compound, UL-certified under Class 94V-0. All materials used in the DF family are non-toxic and environmentally friendly. No CFC compounds are used during any stage of the manufacturing process. IR claims that the DF Series' compact packaging is especially useful for power supplies and battery chargers for cellular phones, notebook computers, and other portable and rechargeable electronic devices.

The DF Series full-wave bridge rectifiers are available immediately. Pricing begins at $0.42 each in quantities of 10,000.