Current - Peak Pulse (10/1000µs):	500A (8/20µs)
Base Part Number:	STIEC45
Supplier Device Package:	SMC (DO-214AB)
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	--
Series:	STIEC, TRANSIL™
Voltage - Clamping (Max) @ Ipp:	47V
Voltage - Breakdown (Min):	30V
Voltage - Reverse Standoff (Typ):	27V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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TVS - Diodes: STIEC45-27AS application field and working principle

TVS (Transient Voltage Suppressor) diodes are an important component used to protect sensitive electronics in the event of a voltage surge. STIEC45-27AS diodes, manufactured by STMicroelectronics, are reverse avalanche rated devices that provide protection from voltage surges up to 27 V. They offer excellent protection against over-voltage transients and are designed to provide over-voltage protection for automotive applications. STIEC45-27AS are also widely used in the industrial, consumer, telecommunications, and computer industries. TVS diodes work by “clamping” or “shunting” voltages that exceed a certain threshold. The STIEC45-27AS has a breakdown voltage of 27V, meaning that a voltage higher than 27V will trigger the diode into action. When the voltage rises above the diode’s threshold, the tunnel effect causes a rapid avalanche breakdown of the material inside the diode, which in turn forms a low-resistance path for the current. This reduces the voltage of the incoming surge and safely channels the excess energy away from sensitive components and into the diode. The STIEC45-27AS diode is constructed with a silicon-oxide-nitride-oxide-silicon (SONOS) structure, which helps to provide superior protection from voltage surges compared to conventional avalanche diodes. The SONOS structure is designed to allow for fast recovery from the breakdown voltage and low-voltage parasitic effects such as built-in electric fields. This helps to make sure that the diode is able to react quickly and efficiently in the event of a voltage surge. Overall, the STIEC45-27AS is an ideal choice for over-voltage protection applications in a variety of industries. The diode is capable of providing fast and reliable protection from voltage surges over 27V while allowing for high-speed circuit protection and low-noise operation. The device is also a low-cost, low-profile solution that is easy to integrate into existing designs. With its excellent protection capabilities and reliability, the STIEC45-27AS is a great choice for any protection or noise-reduction application.

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