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SMBJ78A from VISHAY

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SMBJ78A

Manufacturer: VISHAY, CONCORD, FAIRCHILD, MICROSEMI

TECHNICAL SPECIFICATIONS OF SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR
Partnumber Manufacturer Quantity Availability
SMBJ78A VISHAY, CONCORD, FAIRCHILD, MICROSEMI 118600 In Stock

Description and Introduction

TECHNICAL SPECIFICATIONS OF SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR The SMBJ78A is a transient voltage suppressor (TVS) diode designed to protect sensitive electronics from voltage transients and surges.  

### **Manufacturer Specifications:**  
- **Voltage - Reverse Standoff (Vrwm):** 78V  
- **Voltage - Breakdown (Vbr):** 86.7V (Min), 95.7V (Max)  
- **Voltage - Clamping (Vc) @ Ipp:** 125V (Typical at 1A)  
- **Current - Peak Pulse (Ipp):** 1A (8/20μs)  
- **Power - Peak Pulse:** 1500W (8/20μs)  
- **Operating Temperature:** -55°C to +150°C  
- **Package / Case:** DO-214AA (SMB)  
- **Polarity:** Unidirectional  

### **Descriptions and Features:**  
- **Type:** Unidirectional TVS Diode  
- **Purpose:** Protects circuits from transient overvoltage events such as ESD, lightning, and inductive load switching.  
- **Fast Response Time:** Reacts quickly to transient events (typically in picoseconds).  
- **Low Clamping Voltage:** Helps limit voltage spikes to safe levels.  
- **RoHS Compliant:** Meets environmental standards for hazardous substances.  
- **Applications:** Used in power supplies, communication equipment, automotive electronics, and industrial systems.  

This information is based on standard datasheet specifications for the SMBJ78A TVS diode.

Application Scenarios & Design Considerations

TECHNICAL SPECIFICATIONS OF SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR

Alternative Part Number

  • P6SMB78A --: Same SMB (DO-214AA) package, 78V standoff unidirectional TVS with comparable 600W peak pulse power; direct functional drop-in from a different series.
  • 1SMB78AT3G --: SMB-packaged 78V unidirectional TVS diode with similar clamping and power ratings, widely available and pin-compatible.
  • SMAJ78A --: 78V unidirectional TVS in SMA package; slightly lower 400W rating but usable in lower-surge designs, different series naming for easy distinction.
  • P6SMB91A --: Same SMB (DO-214AA) package unidirectional TVS with comparable 78V standoff class; widely available and electrically similar.

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