SA17CAHE3/54

Voltage - Clamping (Max) @ Ipp:	27.6V
Supplier Device Package:	DO-204AC (DO-15)
Package / Case:	DO-204AC, DO-15, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	500W
Current - Peak Pulse (10/1000µs):	18.1A
Series:	Automotive, AEC-Q101, TransZorb®
Voltage - Breakdown (Min):	18.9V
Voltage - Reverse Standoff (Typ):	17V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction:SA17CAHE3/54 is a unidirectional Transient Voltage Suppressor (TVS) diode that is widely used to protect voltage sensitive components from catastrophic circuit failure due to transient over-voltage events. Made in compliance with IEC 61000-4-2 as well as with JEDEC 020, it also offers superior protection from Electro-Static Discharge (ESD).Application Field:SA17CAHE3/54 is a robust device with a solid Repetitive Peak Off-state Voltage of 5.4V and an operating temperature range from -55°C to +150°C. This device is ideal for many applications including telecommunications, control, and instrumentation systems. It is particularly suitable for applications in harsh environments, since its construction allows it to deliver superior ESD protection and a high level of reliability. For example, SA17CAHE3/54 is frequently used to protect integrated circuits from electro-static discharges. Moreover, this device offers reliable functionality in any temperature environment, making it a great choice for applications that require a high level of temperature performance. Additionally, this diode can be used for power conditioning and transient voltage regulation in automotive, medical, industrial, and consumer systems.Working Principle: The working principle of the SA17CAHE3/54 diode is based on the underlying process of chip breakdown. When a voltage is applied across the diode, the electric field between the electrodes increases and eventually reaches a level at which it causes the electrons to breakdown along the junction. This surge of electric current then carries the transient voltage to ground.At the same time, an inversely-proportional transient current is established across the electronic junction. This current flows for a certain period of time, and the amount of current is dependent on the specific characteristics of the circuit in which the TVS diode is used.When this transient current touches a certain threshold, the SA17CAHE3/54 starts to clamp the voltage at the junction, limiting the power flowing through the junction and thus preventing the circuit itself from damage due to excess voltage.Conclusion:The SA17CAHE3/54 is a reliable and efficient TVS diode that is suitable for many applications, particularly in harsh environmental conditions. With its robust Repetitive Peak Off-state Voltage and operating temperature range from -55°C to +150°C, it is an ideal choice for transient voltage surge protection. Its working principle is based on the process of chip breakdown, in which an inversely proportional transient current is established, protecting the circuit from any damage due to additional voltage.

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