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SMBJ78CA from CONCORD

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SMBJ78CA

Manufacturer: CONCORD, FAIRCHILD, MICROSEMI

Zener TVSs

Partnumber Manufacturer Quantity Availability
SMBJ78CA CONCORD, FAIRCHILD, MICROSEMI 113000 In Stock

Description and Introduction

Zener TVSs The SMBJ78CA is a transient voltage suppressor (TVS) diode manufactured by Fairchild Semiconductor (now part of ON Semiconductor). Below are its specifications, descriptions, and features based on available data:

### **Specifications:**  
- **Voltage - Reverse Standoff (V₉):** 78V  
- **Voltage - Breakdown (Min):** 86.7V  
- **Voltage - Clamping (Max) @ Iₚₚ:** 125V @ 5.8A  
- **Current - Peak Pulse (10/1000µs):** 5.8A  
- **Power - Peak Pulse:** 600W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package / Case:** SMB (DO-214AA)  
- **Polarity:** Bidirectional (CA suffix indicates bi-directional)  

### **Descriptions:**  
- Designed to protect sensitive electronics from high-voltage transients.  
- Clamps transient voltages to safe levels.  
- Suitable for applications requiring surge protection.  

### **Features:**  
- **Low Clamping Voltage:** Provides effective protection.  
- **Fast Response Time:** Reacts quickly to transient events.  
- **High Surge Capability:** Handles large transient currents.  
- **Bidirectional Protection:** Guards against both positive and negative voltage spikes.  
- **RoHS Compliant:** Meets environmental standards.  

For exact application details, refer to the official datasheet from ON Semiconductor (Fairchild legacy documentation).

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • P6SMB78CA --: Same 600W bidirectional TVS with 78V standoff voltage in the SMB package, widely available and a direct functional drop-in.
  • 1SMB78CAT3G --: Bidirectional 78V SMB TVS diode with comparable clamping and power ratings, from a major supplier with good availability.
  • SMAJ78CA --: Bidirectional 78V TVS in SMA package with lower 400W rating; acceptable if surge energy is below 400W, but verify power margin.
  • SMBJ78CA-E3/52 --: Equivalent 600W SMB bidirectional transient voltage suppressor with same voltage rating; alternate vendor option.

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