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SMAJ18CA from CONCORD

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SMAJ18CA

Manufacturer: CONCORD, MICROSEMI, ON, FAIRCHILD

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Partnumber Manufacturer Quantity Availability
SMAJ18CA CONCORD, MICROSEMI, ON, FAIRCHILD 123000 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The **SMAJ18CA** is a **18V bidirectional TVS diode** manufactured by **ON Semiconductor**. It is part of the **SMAJ series** of **Transient Voltage Suppressors (TVS)** designed for **surge protection** in electronic circuits.  

### **Specifications:**  
- **Voltage - Reverse Standoff (V₃₀₀):** **18V**  
- **Voltage - Breakdown (Min):** **20V**  
- **Voltage - Clamping (Max) @ Iₚₚ:** **29.2V @ 10A**  
- **Peak Pulse Current (Iₚₚ):** **10A (8/20µs)**  
- **Power - Peak Pulse:** **400W (8/20µs)**  
- **Operating Temperature Range:** **-55°C to +150°C**  
- **Package / Case:** **DO-214AC (SMA)**  
- **Polarity:** **Bidirectional**  

### **Description:**  
The **SMAJ18CA** is designed to protect sensitive electronics from **transient voltage spikes** such as **ESD (Electrostatic Discharge), lightning, and inductive load switching**. It provides **bidirectional protection**, meaning it can suppress both positive and negative voltage transients.  

### **Features:**  
- **Low clamping voltage** for effective protection  
- **Fast response time** (typically <1ps)  
- **High surge capability** (400W peak pulse power)  
- **RoHS compliant**  
- **AEC-Q101 qualified** (for automotive applications)  

This diode is commonly used in **power supplies, communication systems, automotive electronics, and industrial controls** for **overvoltage protection**.  

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Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • P6SMB18CA --: Same 18V bidirectional TVS clamping function in a comparable SMB package, widely available and a common drop-in substitute.
  • SMBJ18CA --: Directly equivalent 18V bidirectional transient voltage suppressor in SMB package with similar peak pulse power rating.
  • 1SMB18CAT3G --: 18V bidirectional TVS diode in SMB with matching standoff voltage and surge capability, suitable as a functional replacement.
  • 1SMB18CA --: Bidirectional 18V TVS diode in SMB package with comparable surge rating, suitable as a functional replacement.

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