SMLJ15A

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The SMLJ15A is a uni-directional silicon TVS diode, designed to protect sensitive components and circuits from transients. This diode has a power rating of 1500W and a working voltage requirement of 5.5V peak with 5nsec risetime. SMLJ15A is a cost-effective solution for transient voltage protection. It is suitable for both engineer-specified and commercial off-the-shelf (COTS) applications.

The device provides peace of mind protection in both in the field and on the bench. The SMLJ15A is designed using an advanced monolithic Silicon Avalanche Diode technology (SAD), which enables multi-level vigilance in a single package. SAD technology provides superior transient voltage clamping characteristics with extremely fast response time and high power handling capability.

The SMLJ15A has an operating temperature range of -55°C to +130°C and is available in a surface mount package. The device can be used for protection against lightning/power cross, electro-static discharge (ESD), switch transient, and induced lightning and static surge. It is designed to protect customer-specified applications such as PC peripherals, communication base stations, and consumer electronics.

The working principle of the SMLJ15A is the same as that of other TVS diodes. This element features a high asymmetrical breakdown voltage (part 1) and a low stand-off voltage (part 2). During normal voltage conditions, the diode is reverse biased and has very low leakage current. When the bias voltage rises above the breakdown voltage, an avalanche multiplication effect is triggered and current will flow in the forward direction. This diode will also receive an avalanche current when a voltage spike is applied across the diode. The diode provides energy absorption by clamping the voltage to a specified level, to limit the current through the circuit.

In addition, the SMLJ15A features a low-level impedance that provides superior protection without affecting the operation of the circuit it is protecting. The diode has a fast response time, which is important in applications that may be susceptible to high frequency transients. The device is designed for field use and is able to withstand mechanical shock and vibration, ensuring reliable protection.

Overall, the SMLJ15A is an excellent solution for applications that require transient voltage protection. This diode provides superior protection for sensitive components and circuits, with fast response times and a high power handling capability. The device is designed to provide peace of mind and an improved level of protection in both off-the-shelf and customer specified applications.

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