BF375-20B Optoelectronics

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Lamps - Cold Cathode Fluorescent (CCFL) & UV provide a powerful lighting option especially in areas where display lighting is needed, such as in back-lit display cases, laboratories, electronic signage and architectural lighting. The BF375-20B is a Cold Cathode Fluorescent Lamp (CCFL) that uses Ultra-Violet (UV) radiation to create visible light.

A CCFL is a fluorescent lamp made of glass or plastic tubing, usually 6 to 10 mm in diameter, filled with an inert gas, such as argon, at a pressure of 0.25 to 1.4 atmospheres. Inside the tube is a cathode, or filament, that emits electrons when heated by a filament starter circuit. These electrons collide with atoms of the gas, creating a plasma due to collisions between particles. The plasma then emits ultraviolet light, a type of radiation that cannot be seen with the naked eye.

In order to create visible light, a phosphor coating is applied to the inside of the CCFL container. This coating absorbs the ultraviolet light emitted from the gas discharge and transforms it into visible light radiation. This visible light is usually emitted in shades of white, although other colors are also available. This process generally takes milliseconds and allows for the efficient and effective production of visible light.

The BF375-20B is a CCFL specifically designed for the display lighting market and is especially suitable for back lit displays. The product features an integrated starter circuit which helps to eliminate flickering and darkening, as well as a reliable ignition and operation. The tube is 6mm in diameter and houses a phosphor coating that emits a bright white light with a strong color saturation, making it ideal for display lighting. In addition, this product has a high operating frequency of 24kHz with a built-in damp dummy circuit that prevents breakdown of the fluorescent tube.

The operating principle of the BF375-20B is relatively simple. When the starter circuit is operating, a small voltage is applied to a small filament inside the tube. This causes the filament to heat up, emitting electrons. These electrons then collide with the gas atoms within the tube, which results in a plasma. This plasma then emits ultraviolet radiation. The phosphor coating inside the tube absorbs this ultraviolet light and transforms it into visible light radiation.

The BF375-20B is a reliable and effective solution for indoor backlit display lighting applications and is increasingly becoming a popular choice. Its many benefits include a compact design, integrated starter circuit, high frequency operation and quick ignition. Its superior color saturation ensures maximum visibility. Whether it is for backlit displays or display panels, this CCFL is an ideal solution.

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