SMAJ5.0A-Q is an automotive-grade, unidirectional Transient Voltage Suppressor (TVS) diode from Bourns. It is designed to protect sensitive electronic circuits from Electrostatic Discharge (ESD), Electrical Fast Transients (EFT), lightning-induced surges, and other transient overvoltage events. The device is commonly used on 5 V power rails and communication interfaces in automotive, industrial, and telecom applications.
Key Features
Unidirectional TVS diode for DC line protection.
5 V reverse standoff voltage (VRWM) suitable for 5 V systems.
6.4 V minimum breakdown voltage (VBR).
9.2 V maximum clamping voltage (VC) at peak pulse current.
400 W peak pulse power dissipation (10/1000 μs waveform).
43.5 A peak pulse current (IPP) capability.
AEC-Q101 qualified for automotive applications.
Fast response time (<1 ps typical) for effective transient suppression.
Wide operating temperature range: -55°C to +150°C.
Surface-mount DO-214AC (SMA) package for compact PCB designs.
RoHS compliant and suitable for automated assembly processes.
Typical Applications
Automotive ECUs and power rails
5 V power supplies
Telecom equipment
Industrial control systems
I/O ports and communication interfaces
Consumer electronics requiring surge protection
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