SMAJ16A-QH

Current - Peak Pulse (10/1000µs):	15.3A
Supplier Device Package:	SMA (DO-214AC)
Package / Case:	DO-214AC, SMA
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	400W
Series:	Automotive, AEC-Q101, SMAJ
Voltage - Clamping (Max) @ Ipp:	26V
Voltage - Breakdown (Min):	17.8V
Voltage - Reverse Standoff (Typ):	16V
Unidirectional Channels:	1
Type:	Zener
Lead Free Status / RoHS Status:	--
Part Status:	Active

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SMAJ16A-QH TVS - Diodes

Transient Voltage Suppression (TVS) diodes are essential components of the electrical system which prevent damage to the system due to transient voltage spikes. The SMAJ16A-QH is a surge protective diode manufactured by Taiwan Semiconductor, designed to protect against Electrostatic Discharge (ESD), Lightning Induced Transient Voltage (LITV) and induced transient similar environment. In the article, the application field and working principle of SMAJ16A-QH will be briefly discussed. The SMAJ16A-QH TVS-diode is designed to protect sensitive electronic components from surges in voltage that may occur due to lightning strikes, electrical activity and other instances of ESD and induced transient. It is a special type of diode, equipped with a zener diode, to prevent damage from over-voltage conditions. The device is rated to 16VDC with a clamping voltage (Vc) of 12V, a maximum peak pulse power of 1500W, and an operating temperature range of -40°C to +125°C. The SMAJ16A-QH is available in a SMAJ2 package with three leads for mounting, as shown in the figure.Figure: SMAJ16A-QG TVS-DiodeThe function of the SMAJ16A-QH is to shunt the excess voltage away from the protected component, typically semiconductor devices, to an appropriate terminal. This is done by the zener diode’s ability to regulate the voltage at a given level, which is why it is important that the voltage rating is specified. The TVS-diode has two main types of operation, clamping and transient absorption (also called peak power absorbing or power switching). In clamping mode, the device works as a normal diode, allowing current to flow only in one direction. The main difference is that, when a voltage threshold is reached, the device will divert the excess to a terminal, preventing the component from receiving excessive amounts of power or being damaged by an over-voltage surge.In transient absorption mode, the device absorbs the over-voltage spikes which come into contact with the component, protecting it from any sudden change in power. The device also uses the characteristics of the zener diode, which will clamp the voltage at the rated level. While in this mode, it will also absorb any energy associated with the spike, and slowly discharges this energy to a safe level.In addition to its voltage protection capabilities, the SMAJ16A-QH also offers high surge current handling capability and fast response time. The maximum surge current rating (Ipp) of the device is 20A. The fast response time is necessary in order to protect the component from sudden, high energy transients.Finally, the SMAJ16A-QH is also able to handle loads up to 10 amps, making it suitable for low power applications such as LED lighting or battery packs, while still being able to protect against over-voltage conditions.In conclusion, the SMAJ16A-QH is a versatile and robust surge protection diode for protecting against over-voltage conditions, offering good surge current handling capability and fast response times. Its wide operating temperature range, high surge current rating, and low power handling capability makes it a great choice for protecting vulnerable components in electrostatic discharge and lightning-induced transient environments.

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