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SMCJ40CA from VISHAY

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SMCJ40CA

Manufacturer: VISHAY, CONCORD, FAIRCHILD, MICROSEMI

Zener TVSs

Partnumber Manufacturer Quantity Availability
SMCJ40CA VISHAY, CONCORD, FAIRCHILD, MICROSEMI 114700 In Stock

Description and Introduction

Zener TVSs The SMCJ40CA is a bidirectional TVS (Transient Voltage Suppressor) diode designed to protect sensitive electronic components from voltage transients and surges.  

### **Manufacturer Specifications:**  
- **Voltage - Reverse Standoff (V_RWM):** 40V  
- **Voltage - Breakdown (V_BR):** 44.4V (min)  
- **Voltage - Clamping (V_CL):** 64.5V at 1A  
- **Peak Pulse Current (I_PP):** 1A (8/20μs waveform)  
- **Power - Peak Pulse (P_PP):** 600W (10/1000μs waveform)  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package / Case:** DO-214AB (SMC)  

### **Descriptions:**  
- The SMCJ40CA is part of the **SMCJ series** of TVS diodes.  
- It provides **bidirectional protection**, meaning it clamps both positive and negative voltage transients.  
- Designed for **high-speed suppression** of transient overvoltages in circuits.  

### **Features:**  
- **Low Clamping Voltage:** Ensures minimal stress on protected components.  
- **Fast Response Time:** Reacts quickly to transient events (picosecond range).  
- **High Surge Capability:** Can handle high transient currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **AEC-Q101 Qualified:** Suitable for automotive applications.  

This diode is commonly used in **power supplies, communication lines, and industrial electronics** for surge protection.

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • 1.5SMC43CA --: Bidirectional TVS diode in the 1.5SMC series with a comparable 1500 W peak pulse rating and a 43 V standoff voltage close to the SMCJ40CA, suitable for similar transient protection.
  • SMDJ40CA --: Bidirectional 3000 W SMD TVS diode with the same 40 V standoff voltage, offering higher surge capability as a robust drop-in style replacement in the same SMC footprint.
  • P6SMB43CA --: Bidirectional 600 W SMB TVS diode with a nearby 43 V standoff voltage, usable as a lower-power alternative when board space or clamping requirements allow.
  • SMAJ40CA --: Bidirectional TVS diode with the same 40V standoff voltage in a smaller SMA package, useful where board space is limited and surge energy is lower.
  • TPSMB43CA --: Automotive-grade bidirectional TVS in SMB package with 43V standoff, providing robust transient suppression and a reliable cross-reference option.

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