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SMBJ28CA from FAIRCHILD,Fairchild Semiconductor

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SMBJ28CA

Manufacturer: FAIRCHILD, CONCORD, CCD, MICROSEMI

Zener TVSs

Partnumber Manufacturer Quantity Availability
SMBJ28CA FAIRCHILD, CONCORD, CCD, MICROSEMI 113500 In Stock

Description and Introduction

Zener TVSs The SMBJ28CA is a transient voltage suppressor (TVS) diode manufactured by FAIRCHILD. Below are its specifications, descriptions, and features:  

### **Specifications:**  
- **Voltage - Reverse Standoff (V_RWM):** 28V  
- **Voltage - Breakdown (V_BR):** 31.1V (Min)  
- **Voltage - Clamping (V_C):** 45.4V @ 1A  
- **Peak Pulse Current (I_PP):** 1A  
- **Power - Peak Pulse (P_PP):** 600W  
- **Operating Temperature:** -55°C to +150°C  
- **Package / Case:** DO-214AA (SMB)  
- **Mounting Type:** Surface Mount  
- **Polarity:** Bidirectional  

### **Description:**  
The SMBJ28CA is designed to protect sensitive electronics from high-voltage transients, such as ESD, lightning, and inductive load switching. It provides bidirectional clamping for both positive and negative voltage spikes.  

### **Features:**  
- **Low Clamping Voltage:** Ensures effective protection for sensitive components.  
- **Fast Response Time:** Reacts quickly to transient events.  
- **High Surge Capability:** Can handle large transient currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **Reliable Performance:** Suitable for industrial and automotive applications.  

This diode is commonly used in power supplies, communication systems, and other electronic circuits requiring transient protection.

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • P6SMB28CA --: Same SMB (DO-214AA) package, 28V bidirectional TVS with 600W peak pulse power, direct functional equivalent.
  • 1SMB28CAT3G --: SMB package bidirectional 28V TVS diode with comparable clamping voltage and 600W surge rating, widely available.
  • SMAJ28CA --: Bidirectional 28V TVS in SMA package; slightly lower 400W rating but usable as a drop-in alternative where surge requirements are moderate.
  • P6SMB30CA --: Same SMB package bidirectional TVS with a close standoff voltage (30V vs 28V) and comparable clamping, widely available from a major brand.
  • 1KSMB30CA --: Bidirectional SMB TVS diode with similar 30V standoff and surge rating, suitable drop-in replacement in most 28V clamping applications.
  • 1SMB30CAT3G --: Bidirectional 30V SMB TVS diode in the same DO-214AA footprint, widely available and electrically similar to the SMBJ28CA.

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