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SMAJ17CA from MICROSEMI

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SMAJ17CA

Manufacturer: MICROSEMI, FAIRCHILD, CONCORD, Littelfu..

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS
Partnumber Manufacturer Quantity Availability
SMAJ17CA MICROSEMI, FAIRCHILD, CONCORD, Littelfu.. 211000 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The SMAJ17CA is a bidirectional TVS (Transient Voltage Suppressor) diode manufactured by Fairchild Semiconductor (now part of ON Semiconductor).  

### **Specifications:**  
- **Voltage - Reverse Standoff (Typ):** 17V  
- **Voltage - Breakdown (Min):** 18.9V  
- **Voltage - Clamping (Max) @ Ipp:** 27.5V @ 10A (8/20µs pulse)  
- **Current - Peak Pulse (10/1000µs):** 30A  
- **Power - Peak Pulse:** 600W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AC (SMA)  

### **Descriptions:**  
- Designed to protect sensitive electronics from high-voltage transients.  
- Bidirectional polarity for clamping both positive and negative surges.  
- Low incremental surge resistance for effective clamping.  

### **Features:**  
- **Fast Response Time:** Reacts quickly to transient events.  
- **High Surge Capability:** Handles large transient currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **Low Leakage Current:** Minimizes power loss in normal operation.  

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

(Note: Fairchild Semiconductor was acquired by ON Semiconductor in 2016, but legacy part numbers like SMAJ17CA may still be referenced under the original manufacturer name.)

Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • P6SMB17CA --: Same 17V bidirectional TVS clamping function in a comparable SMB package, widely available and electrically similar.
  • SMBJ17CA --: Directly equivalent 17V bidirectional TVS diode in SMB package with matching standoff voltage and surge rating.
  • 1SMB17CAT3G --: 17V bidirectional TVS in SMB package offering similar clamping performance and a different series naming for easy distinction.
  • P6SMB18CAT3G --: Bidirectional TVS diode in SMB package with comparable standoff voltage and clamping performance; ON Semiconductor is the successor to Fairchild, so supply continuity and technical support are strong.
  • SMBJ17CA-E3/52 --: Direct SMB-package bidirectional TVS with 17V standoff, matching the SMAJ17CA's working voltage and surge rating; widely available from a major TVS supplier.
  • 1SMB17CA --: 17V bidirectional transient voltage suppressor in SMB outline, suitable drop-in replacement for general surge clamping.
  • P6SMB18CA --: Same manufacturer, similar SMB package bidirectional TVS with close standoff voltage (18V vs 17V) and comparable surge rating, good drop-in choice.
  • SMBJ18CA --: Industry-standard SMB bidirectional TVS with 18V standoff, widely available from multiple vendors and electrically close to SMAJ17CA.
  • 1SMB18CAT3G --: SMB bidirectional TVS with 18V standoff voltage and similar clamping performance, offered by a major supplier as a functional substitute.

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