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SMCJ28CA from MICROSEMI

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SMCJ28CA

Manufacturer: MICROSEMI, FAIRCHILD, CONCORD

Zener TVSs

Partnumber Manufacturer Quantity Availability
SMCJ28CA MICROSEMI, FAIRCHILD, CONCORD 113000 In Stock

Description and Introduction

Zener TVSs The SMCJ28CA is a bidirectional 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 (V_RWM):** 28V  
- **Voltage - Breakdown (V_BR):** 31.1V (min)  
- **Voltage - Clamping (V_C):** 45.4V at 23.2A (I_PP)  
- **Peak Pulse Current (I_PP):** 23.2A (8/20μs waveform)  
- **Power - Peak Pulse (P_PP):** 600W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AB (SMC)  

### **Description:**  
The SMCJ28CA is designed to protect sensitive electronics from high-voltage transients, such as ESD (Electrostatic Discharge), lightning, and other voltage surges. It is a bidirectional TVS diode, meaning it clamps both positive and negative voltage spikes.  

### **Features:**  
- Low incremental surge resistance  
- Fast response time (<1ps)  
- Bidirectional polarity  
- High reliability  
- RoHS compliant  

This diode is commonly used in applications like power supplies, communication systems, and automotive electronics for transient protection.  

(Note: Always verify datasheets for the latest specifications, as Fairchild's product lines are now managed by ON Semiconductor.)

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • 1SMC28CA --: Same 1500W bidirectional TVS diode with 28V standoff voltage in the SMC package, directly interchangeable.
  • P6SMB28CA --: Bidirectional TVS with matching 28V standoff and clamping characteristics, though 600W rating requires verifying surge margin.
  • SMAJ28CA --: Bidirectional 28V TVS in SMA package offering a compact alternative, but lower 400W power rating should be checked against the application.
  • 1.5SMC28CA --: Same 1500W bidirectional TVS class with 28V standoff voltage, widely available and electrically equivalent for surge clamping.
  • 1.5SMC30CA --: Bidirectional TVS diode in the 1.5SMC series with a comparable 1500W peak pulse rating and a 30V standoff close to the SMCJ28CA, suitable for similar transient protection.
  • SMDJ28CA --: Bidirectional SMD TVS diode with the same 28V standoff voltage and higher 3000W surge rating, providing a robust drop-in style alternative in a different series.
  • P6SMB30CA --: Bidirectional TVS diode with a nearby 30V standoff and 600W rating, usable for lower-energy clamping applications as a cost-effective alternative.

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