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SMBJ48A from MICROSEMI

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SMBJ48A

Manufacturer: MICROSEMI, ST, FAIRCHILD, CONCORD, Littelfu..

Zener TVSs

Partnumber Manufacturer Quantity Availability
SMBJ48A MICROSEMI, ST, FAIRCHILD, CONCORD, Littelfu.. 213000 In Stock

Description and Introduction

Zener TVSs The SMBJ48A is a transient voltage suppressor (TVS) diode manufactured by **FAIRCHILD Semiconductor** (now part of ON Semiconductor). Below are its key specifications, descriptions, and features based on available data:  

### **Specifications:**  
- **Voltage - Reverse Standoff (V_RWM):** 48V  
- **Voltage - Breakdown (V_BR):** 53.3V (min)  
- **Voltage - Clamping (V_C):** 77.4V at 1A  
- **Peak Pulse Current (I_PP):** 1A (8/20µs waveform)  
- **Power - Peak Pulse (P_PP):** 600W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package / Case:** SMB (DO-214AA)  

### **Descriptions:**  
- **Type:** Uni-directional TVS diode (protects against positive voltage transients).  
- **Application:** Designed for surge protection in electronic circuits, particularly for low-voltage applications.  
- **Compliance:** Meets industry standards for transient suppression.  

### **Features:**  
- **Fast Response Time:** Reacts quickly to transient voltage spikes.  
- **High Surge Capability:** Can handle high transient currents.  
- **Low Clamping Voltage:** Limits voltage to safe levels during surges.  
- **RoHS Compliant:** Lead-free and environmentally friendly.  

This information is based on Fairchild's datasheet and industry-standard specifications. For detailed performance curves and application notes, refer to the official documentation.

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • P6SMB48A --: Same 600W SMB package unidirectional TVS with 48V standoff voltage, direct functional equivalent from a different series.
  • 1SMB48AT3G --: 600W SMB unidirectional TVS diode with matching 48V working voltage and clamping characteristics.
  • SMAJ48A --: Similar 48V standoff unidirectional TVS in SMA package; lower 400W rating but usable in many lower-surge applications.
  • P6SMB51A --: Same SMB package unidirectional TVS with a close standoff voltage (43.6V vs 48V) and comparable clamping, making it a strong drop-in choice for 48V rail protection.
  • 1SMB51AT3G --: SMB-packaged unidirectional TVS diode with similar standoff voltage and power rating, widely available and electrically compatible for transient suppression.

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