SMF58A-HE3-18

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Transient Voltage Suppressors (TVS) diodes are designed to protect sensitive electronic equipment from voltage transients, particularly from those generated by lightning. SMF58A-HE3-18, an unidirectional diode from DEVIN, falls under this category and is designed to protect against electrical overstress (EOS) and electrostatic discharge (ESD). Its TVS diode combines superior ESD protection, ultra-low leakage current and fast response time making it an ideal choice for computer systems, telecommunications, industrial, and consumer electronics.

The SMF58A-HE3-18 is made from silicon avalanche diode chip. It features a wide operation temperature range of -40°C to +125°C, ultra-low leakage current of 0.04Ω, clamping voltage of 18V (8/20μs Pulse Waveform), and a low capacitance of 0.05pF at 0V. The SMF58A-HE3-18 also offers a peak pulse power rating of 600W at 10/1000μs and a lead-free RoHS compliant package.

SMF58A-HE3-18 offers a wide variety of applications in the consumer electronics market due to its robust design and superior performance. It can be used for DC power systems, data and signal lines, computer power supplies, DVDs, flat panel TVs, and other similar consumer electronics. Furthermore, SMF58A-HE3-18 can also be used in automotive applications such as CAN-bus systems, Radio Frequency (RF) systems, ECU circuits, and airbags.

The working principle of SMF58A-HE3-18 involves clamping the transient voltage to a safe level. When the surge voltage exceeds the TVS diode’s threshold voltage, the diode is activated and clamps the voltage at a safe level. The current is then diverted safely away from the circuit, protecting it from EOS, EMI, and ESD. After the surge voltage has receded, the diode will reset and become inactive, ready for the next surge.

In addition, the SMF58A-HE3-18 features fast response time of 7ns typical, ensuring that the diode will be activated before any sensitive device is damaged. It is also designed to be compliant with international safety standards, such as IEC 61000-4-2, ensuring the TVS diode offers maximum protection when used in consumer electronics.

SMF58A-HE3-18 is a robust and reliable TVS diode providing superior protection against EOS, EMI, and ESD. With the wide variety of applications, fast response time, wide operating temperature range, and low capacitance, it is an ideal choice for a variety of consumer electronics applications.

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