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SMAJ70CA from MICROSEMI

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SMAJ70CA

Manufacturer: MICROSEMI, CONCORD, FAIRCHILD, Littelfu..

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Partnumber Manufacturer Quantity Availability
SMAJ70CA MICROSEMI, CONCORD, FAIRCHILD, Littelfu.. 211000 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The SMAJ70CA is a bidirectional TVS (Transient Voltage Suppressor) diode manufactured by Fairchild Semiconductor (now part of ON Semiconductor). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Voltage - Reverse Standoff (V_RWM):** 70V  
- **Voltage - Breakdown (V_BR):** 77.8V (min)  
- **Voltage - Clamping (V_C):** 113V (max) at 10A  
- **Peak Pulse Current (I_PP):** 10A (8/20μs waveform)  
- **Power - Peak Pulse (P_PP):** 400W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AC (SMA)  

### **Description:**  
The SMAJ70CA is designed to protect sensitive electronics from high-voltage transients, such as ESD (Electrostatic Discharge), lightning, and inductive load switching. It is bidirectional, meaning it clamps both positive and negative transient voltages.  

### **Features:**  
- **Low Clamping Voltage:** Provides effective protection for sensitive circuits.  
- **Fast Response Time:** Responds quickly to transient events (typically <1ns).  
- **High Surge Capability:** Can handle high peak pulse currents.  
- **Bidirectional Operation:** Protects against both positive and negative transients.  
- **RoHS Compliant:** Meets environmental standards.  

This information is based on Fairchild’s datasheet and technical documentation. For detailed performance curves and application notes, refer to the official datasheet.

Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • P6SMB70CA --: Bidirectional TVS diode with 70V standoff voltage in SMB package, similar surge rating and a different series name.
  • SMBJ70CA --: Direct functional equivalent bidirectional TVS with 70V standoff in SMB, widely available from an alternate manufacturer.
  • 1SMB70CAT3G --: Bidirectional 70V TVS in SMB package with comparable clamping performance, different naming series.
  • P6SMB75CA --: Bidirectional TVS diode in SMB package with comparable 75V standoff and 600W peak pulse power, suitable drop-in replacement for 400W SMAJ70CA in many clamp applications.

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