What is 1.5KE15CA? – 12.8V, 1500W, TVS Rectifier, Diode

What is 1.5KE15CA?

It is a type of transient voltage suppressor (TVS) diode that is designed to protect electronic circuits from voltage surges and spikes. It has a peak pulse power rating of 1500 watts and a breakdown voltage of 15 volts.

TVS diodes like the 1.5KE15CA are commonly used to protect sensitive electronic devices from voltage transients caused by lightning, electrostatic discharge (ESD), or other sources of electrical noise. They work by shunting the excess voltage away from the protected device and dissipating it harmlessly through the diode.

Part Number: 1.5KE15CA

Function: 12.8V, 1500 Watt Mosorb Zener Transient Voltage Suppressor

Package: Axial Type

Manufacturer: ON Semiconductor


Mosorb devices are designed to protect voltage sensitive components from high voltage, high–energy transients. They have excellent clamping capability, high surge capability, low zener impedance and fast response time. These devices are ON Semiconductor’s exclusive, cost-effective, highly reliable Surmetic axial leaded package and are ideally-suited for use in communication systems, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/ consumer applications, to protect CMOS, MOS and Bipolar integrated circuits.

Image and pinouts :


Specification Features

• Working Peak Reverse Voltage Range – 5.8 V to 214 V

• Peak Power – 1500 Watts @ 1 ms

• ESD Rating of Class 3 (>16 KV) per Human Body Model

• Maximum Clamp Voltage @ Peak Pulse Current

• Low Leakage < 5 µA above 10 V

• UL 497B for Isolated Loop Circuit Protection

• Response Time is typically < 1 ns


1.5KE15CA Datasheet

The 1.5KE15CA is just one of many TVS diodes available, and the specific model chosen will depend on the voltage and power requirements of the application. Other commonly used TVS diodes include the 1.5KE33CA, 1.5KE200CA, and 1.5KE400CA.

Difference between tvs diode and normal diode?

A diode is a two-terminal electronic device that allows current to flow in one direction but blocks it in the other. It is commonly used in electronic circuits for rectification, voltage regulation, and signal isolation. A TVS (transient voltage suppressor) diode, on the other hand, is a specialized type of diode that is designed to protect electronic circuits from voltage surges and spikes caused by lightning, electrostatic discharge (ESD), or other sources of electrical noise.

The main difference between the two is that a TVS diode has a specific range of breakdown voltages and can withstand much higher levels of current and power for short periods of time.

1.5KE15CA Datasheet

1.5KE15CA pdf


SMDA05 Datasheet – 5V, Unidirectional TVS Array – Semtech

What is SMDA05?

It is a type of 5V, transient voltage suppressor (TVS) diode. TVS diodes are electronic components used to protect sensitive electronic circuits from voltage spikes and transients that could damage the circuit or cause malfunction.

Function: Unidirectional TVS Array for Protection of Four Lines

Package: SO-8 Pin type

Manufacturer: http://www.semtech.com/ ( Semtech Corporation )


SMDA05 Datasheet


The SMDA05 series of TVS arrays are designed to provide undirectional protection for sensitive electronics from damage or latch-up due to ESD, lightning, and other voltage-induced transient events.

TVS diodes are solid-state devices designed specifically for transient suppression. They offer desirable characteristics for board level protection including fast response time, low operating and clamping voltage and no device degradation.


1. Working voltage : 5 V
2. Transient protection for data lines to
(1) IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
(2) IEC 61000-4-4 (EFT) 40 A (5/50 ns)
(3) IEC 61000-4-5 (Lightning) 12 A (8/20 µs)
4. Unidirectional protection
5. Small SO-8 package
6. Protects four I/O lines
7. Low leakage current
8. Low operating and clamping voltages
9. Solid-state silicon-avalanche technology




1. RS-232 data lines
2. Microprocessor-based equipment
3. Notebooks, desktops, and servers
4. Instrumentation
5. LAN/WAN equipment
6. Peripherals
7. Serial and parallel ports


Official Site : http://www.semtech.com/circuit-protection/esd-protection/smda05/

The SMDA05 diode has a low clamping voltage and fast response time, making it suitable for use in high-speed digital circuits and communication interfaces such as Ethernet, USB, and HDMI. It is also commonly used in power supply circuits and automotive electronics.

SMDA05 Datasheet PDF


Other data sheets are available within the file: SMDA12, SMDA15, SMDA24