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SMAJ64A from MICROSEMI

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SMAJ64A

Manufacturer: MICROSEMI, CONCORD, FAIRCHILD, Littelfu..

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Partnumber Manufacturer Quantity Availability
SMAJ64A MICROSEMI, CONCORD, FAIRCHILD, Littelfu.. 211000 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The SMAJ64A is a Transient Voltage Suppressor (TVS) diode manufactured by Microsemi (now part of Microchip Technology). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Peak Pulse Power (PPP):** 400W (10/1000μs waveform)  
- **Breakdown Voltage (VBR):** 71.2V (min) to 78.8V (max) at IT = 1mA  
- **Standoff Voltage (VRWM):** 64V  
- **Maximum Clamping Voltage (VC):** 103.4V at IPP = 1A  
- **Peak Pulse Current (IPP):** 3.88A (8/20μs waveform)  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AC (SMA)  

### **Descriptions:**  
- The SMAJ64A is a unidirectional TVS diode designed to protect sensitive electronics from voltage transients, including ESD, lightning, and inductive load switching.  
- It is part of the SMAJ series, which offers high surge capability in a compact SMA package.  

### **Features:**  
- **Low Clamping Voltage:** Provides effective protection for sensitive components.  
- **Fast Response Time:** Responds quickly to transient events (typically <1ps).  
- **High Surge Capability:** Can handle large transient currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **Unidirectional Operation:** Protects against positive voltage transients only.  

For bidirectional protection, the equivalent part would be the **SMAJ64CA**.  

This information is based on Microsemi's datasheet and product documentation.

Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • P6SMB68A --: Same 600W SMB unidirectional TVS class with a slightly higher standoff voltage, widely available and pin-compatible.
  • SMBJ64A --: Direct 600W SMB unidirectional TVS with matching 64V standoff and clamping characteristics from a different series.
  • 1SMB64AT3G --: 600W SMB unidirectional TVS with equivalent 64V standoff rating, alternate naming and second-source availability.
  • P6SMB75A --: Same 600W SMB unidirectional TVS class with a 75V standoff that clamps close to the SMAJ64A, widely available and a common drop-in for 64V rail protection.

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