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SMCJ40A from CONCORD

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SMCJ40A

Manufacturer: CONCORD, MICROSEMI, FAIRCHILD

Zener TVSs
Partnumber Manufacturer Quantity Availability
SMCJ40A CONCORD, MICROSEMI, FAIRCHILD 113000 In Stock

Description and Introduction

Zener TVSs The SMCJ40A is a transient voltage suppressor (TVS) diode manufactured by **FAIRCHILD**. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Voltage - Reverse Standoff (V_RWM):** 40V  
- **Voltage - Breakdown (V_BR):** 44.4V (min)  
- **Peak Pulse Current (I_PP):** 24.2A (8/20µs waveform)  
- **Clamping Voltage (V_C):** 64.5V at I_PP  
- **Power - Peak Pulse (P_PP):** 600W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AB (SMC)  

### **Descriptions:**  
- Designed to protect sensitive electronics from high-voltage transients.  
- Bi-directional TVS diode for surge protection in AC or DC circuits.  
- Low incremental surge resistance for effective clamping.  

### **Features:**  
- **Fast Response Time:** Typically <1.0ps.  
- **High Surge Capability:** Withstands repetitive surges.  
- **Low Leakage Current:** Ensures minimal power loss.  
- **RoHS Compliant:** Meets environmental standards.  

This information is based solely on the manufacturer's datasheet for the **SMCJ40A** by **FAIRCHILD**.

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • 1.5SMC43A --: Same 1500W SMC package unidirectional TVS with a close standoff voltage (43V vs 40V), providing comparable clamping protection for the same circuit.
  • P6SMB43A --: 600W SMB unidirectional TVS with similar 43V standoff; suitable drop-in when lower peak pulse power is acceptable and board space is limited.
  • SMAJ40A --: 400W SMA unidirectional TVS with identical 40V standoff voltage, offering the same working voltage in a smaller package for lower-energy transient protection.
  • 1.5SMC40A --: Same 1500W peak pulse power, 40V standoff unidirectional TVS in SMC package; widely available drop-in replacement with equivalent clamping performance.
  • P6SMB40A --: 600W SMB unidirectional TVS with 40V standoff; suitable if lower surge rating is acceptable, offering a smaller footprint alternative.
  • 1SMC40AT3G --: Same 1500W unidirectional TVS class with 40V standoff voltage, offered by the successor brand to Fairchild's discrete business.

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