SMDA15C-5

Current - Peak Pulse (10/1000µs):	5A (8/20µs)
Base Part Number:	SMDA
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	50pF @ 1MHz
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	300W
Series:	TVSarray™
Voltage - Clamping (Max) @ Ipp:	30V
Voltage - Breakdown (Min):	16.7V
Voltage - Reverse Standoff (Typ):	15V
Bidirectional Channels:	5
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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SMDA15C-5: TVS - Diodes

The SMDA15C-5 is a type of transient voltage suppressor (TVS) diode. A TVS diode is a semiconductor device that is specifically designed to protect sensitive electronic components from electrical transients or voltage spikes that exceed the rated breakdown voltage of the components. The SMDA15C-5 is a unidirectional device, meaning it can only protect against voltage spikes going in the positive direction (positive-to-negative transient events).

Application Field

The SMDA15C-5 is primarily used in applications where sensitive components or systems need to be protected from excessive voltage spikes and transients. Examples include telecommunications systems, automotive electronics, computer networks, and mobile devices. The SMDA15C-5 is particularly well-suited for automotive electronics, as its fast response time ensures that any voltage spikes or transients are quickly and effectively suppressed.

Design and Working Principle

The design of the SMDA15C-5 is based on Variation of Avalanche Multiplication Structure (VAMS) technology. It consists of two diode layers arranged in a series configuration with a trigger zone in between. When a voltage spike occurs, current flows through the trigger zone and the diode layers become forward-biased, triggering an avalanche multiplication process. The avalanche multiplication process limits or “clamps” the voltage spike, effectively reducing its amplitude before it reaches the sensitive components. The TVS diode’s response time is extremely fast—it can clamp voltage spikes in a matter of nanoseconds.

Advantages and Disadvantages

The main advantage of the SMDA15C-5 is its fast response time. This ensures that any voltage spikes or transients are clamped quickly and efficiently, preventing damage to sensitive components. Another advantage of the SMDA15C-5 is its low capacitance, which helps prevent signal distortion.The main disadvantage of the SMDA15C-5 is its limited power dissipation capability. Its power dissipation rating is comparatively low, meaning it can only protect against relatively small surges. As such, it may not be suitable for applications that are exposed to larger surges or transients.

Conclusion

The SMDA15C-5 is a type of TVS diode with a fast response time and low capacitance, making it well-suited for applications where sensitive components need to be protected from voltage surges and transients. While its power dissipation rating is comparatively low, it can still protect against small surges and transients.

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