SMAJ120A-13-F
Unidirectional surface mount TVS diodes for voltage suppression
Manufacturer： diodes
series introduction
# Introduction to the SMAJ120A - 13 - F Product Series
## 1. Overview
The SMAJ120A - 13 - F product series belongs to the family of transient voltage suppressor (TVS) diodes. These diodes are crucial components in modern electronic circuits, designed to protect sensitive electronic devices from voltage spikes and transient events. Voltage spikes can occur due to various reasons such as lightning strikes, electrostatic discharge (ESD), and switching transients in power supplies. The SMAJ120A - 13 - F series offers reliable and efficient protection, ensuring the longevity and proper functioning of electronic equipment.
## 2. Key Features
### 2.1 High - Voltage Protection
The "120A" in the product name indicates that these TVS diodes are designed to handle a peak pulse power of up to 1200W (assuming a standard 10/1000μs waveform). This high - power handling capability makes them suitable for protecting circuits that are exposed to relatively large voltage transients. They can effectively clamp the voltage to a safe level, preventing damage to downstream components.
### 2.2 Low Clamping Voltage
The SMAJ120A - 13 - F series features a low clamping voltage characteristic. When a voltage spike occurs, the TVS diode quickly switches from a high - impedance state to a low - impedance state, diverting the excess current away from the protected circuit. The low clamping voltage ensures that the voltage across the protected device remains within its safe operating range, minimizing the risk of damage.
### 2.3 Fast Response Time
These diodes have an extremely fast response time, typically in the order of picoseconds. This rapid response allows them to react almost instantaneously to voltage transients, providing immediate protection to the connected electronic components. In applications where even a short - duration voltage spike can cause significant damage, such as in high - speed data communication circuits, the fast response time of the SMAJ120A - 13 - F series is a critical advantage.
### 2.4 Compact Package
The "SMA" in the product name refers to the Small Outline Diode (SOD) package, which is a popular and compact package type. The compact size of the SMA package makes it suitable for use in space - constrained printed circuit board (PCB) designs. It allows for easy integration into various electronic devices, from small consumer electronics to larger industrial control systems.
### 2.5 RoHS Compliance
The SMAJ120A - 13 - F series is compliant with the Restriction of Hazardous Substances (RoHS) directive. This means that the products are free from hazardous substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBBs), and polybrominated diphenyl ethers (PBDEs). RoHS compliance ensures that the products are environmentally friendly and meet the regulatory requirements of many countries and regions.
## 3. Electrical Specifications
### 3.1 Reverse Stand - off Voltage (VRWM)
The reverse stand - off voltage is the maximum DC or continuous AC voltage that the TVS diode can withstand in the reverse - biased condition without conducting significant current. For the SMAJ120A - 13 - F series, the reverse stand - off voltage is typically specified at a certain value (e.g., around 120V), which means that the diode will remain in a non - conducting state as long as the reverse voltage across it does not exceed this value.
### 3.2 Breakdown Voltage (VBR)
The breakdown voltage is the voltage at which the TVS diode starts to conduct current in the reverse - biased direction. It is slightly higher than
Images for reference
DO-214AC, SMA (Unidirectional)
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