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SMCJ78CA from VISHAY

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SMCJ78CA

Manufacturer: VISHAY, MICROSEMI, CONCORD, FAIRCHILD

Zener TVSs
Partnumber Manufacturer Quantity Availability
SMCJ78CA VISHAY, MICROSEMI, CONCORD, FAIRCHILD 113900 In Stock

Description and Introduction

Zener TVSs The SMCJ78CA is a transient voltage suppressor (TVS) diode manufactured by Fairchild Semiconductor. Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Voltage - Reverse Standoff (V_RWM):** 78V  
- **Voltage - Breakdown (V_BR):** 86.7V (min)  
- **Voltage - Clamping (V_C):** 125V at 10A  
- **Peak Pulse Current (I_PP):** 10A (8/20µs waveform)  
- **Power - Peak Pulse (P_PP):** 1500W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AB (SMC)  

### **Description:**  
The SMCJ78CA is a bidirectional TVS diode designed to protect sensitive electronics from high-voltage transients, such as ESD, lightning, and inductive load switching. It offers robust clamping performance and fast response times.  

### **Features:**  
- **Bidirectional Protection:** Guards against both positive and negative voltage transients.  
- **Low Clamping Voltage:** Ensures effective suppression of transient spikes.  
- **High Power Handling:** Capable of dissipating large transient energy (1500W).  
- **Fast Response Time:** Reacts quickly to transient events (sub-nanosecond).  
- **RoHS Compliant:** Meets environmental standards.  

This information is strictly based on the manufacturer's datasheet. For detailed application guidelines, refer to Fairchild's official documentation.

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • 1.5SMC82CA --: Bidirectional TVS diode in the 1.5SMC series with a comparable standoff voltage and 1500W peak pulse rating, suitable as a functional replacement for SMCJ78CA.
  • P6SMB91CA --: Bidirectional SMB-package TVS diode with a similar clamping voltage and 600W rating; a common cross-reference for SMCJ78CA in lower-power surge protection designs.
  • SMAJ78CA --: Bidirectional TVS diode with the same 78V standoff voltage in a smaller SMA package, offering a compact alternative when lower peak pulse power is acceptable.
  • 1.5SMC78CA --: Same 1500W peak pulse power and 78V bidirectional standoff voltage in the SMC (DO-214AB) package, widely available and a direct functional drop-in for transient voltage suppression.
  • SMDJ78CA --: 3000W bidirectional TVS with 78V standoff in the same SMC footprint, offering higher surge capability as a robust upgrade when board space is fixed.
  • P6SMB78CA --: 600W bidirectional TVS at 78V standoff in a smaller SMB package; suitable when lower surge rating is acceptable and a compact alternative is needed.
  • P6SMB82CA --: Bidirectional TVS diode with similar clamping characteristics and a nearby standoff voltage, usable as a lower-power alternative when board space allows the SMB package.
  • SMBJ78CA --: Bidirectional TVS in the SMBJ series with the same 78V standoff voltage and SMB footprint, providing a direct functional replacement.

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