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SMAJ33CA from VIS

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SMAJ33CA

Manufacturer: VIS, FAIRCHILD, CONCORD, Littelf, MICROSEMI

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Partnumber Manufacturer Quantity Availability
SMAJ33CA VIS, FAIRCHILD, CONCORD, Littelf, MICROSEMI 123500 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The SMAJ33CA is a transient voltage suppressor (TVS) diode manufactured by Fairchild Semiconductor (now part of ON Semiconductor). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Part Number:** SMAJ33CA  
- **Manufacturer:** FAIRCHILD (now ON Semiconductor)  
- **Type:** Bidirectional TVS Diode  
- **Working Peak Reverse Voltage (V₃₃):** 33V  
- **Breakdown Voltage (VBR):** 36.7V (min) to 40.5V (max) at 1mA  
- **Clamping Voltage (Vc):** 53.3V at 16.7A (8/20µs pulse)  
- **Peak Pulse Current (IPP):** 16.7A (8/20µs)  
- **Maximum Reverse Leakage Current (IR):** 1µA at 33V  
- **Power Dissipation (PPPM):** 400W (peak pulse power)  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** DO-214AC (SMA)  

### **Descriptions:**  
The SMAJ33CA is designed to protect sensitive electronics from voltage transients, including ESD, lightning, and inductive load switching. It is a bidirectional TVS diode, meaning it clamps both positive and negative voltage spikes.  

### **Features:**  
- **Bidirectional Protection:** Safeguards against overvoltage in both polarities.  
- **Low Clamping Voltage:** Provides effective transient suppression.  
- **Fast Response Time:** Reacts quickly to transient events (picosecond range).  
- **High Surge Capability:** Handles high peak pulse currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **Compact SMA Package:** Suitable for space-constrained applications.  

This information is based on Fairchild's datasheet and specifications. For detailed performance curves and application notes, refer to the official documentation.

Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • SMBJ33CA --: Same 33V bidirectional TVS in a larger SMB package, offering higher surge rating and a different series/prefix for easy distinction.
  • P6SMB33CA --: Bidirectional 33V TVS with comparable clamping voltage in SMB package; different series name and widely available as a drop-in upgrade.
  • 1.5SMC33CA --: 33V bidirectional TVS with higher 1500W peak pulse power in SMC package, suitable when extra surge margin is needed and clearly different naming.
  • P6SMB39CA --: Bidirectional TVS diode in SMB package with comparable 33V standoff class and similar clamping performance, widely available and a common drop-in replacement.
  • 1SMB33CAT3G --: Bidirectional 33V TVS in SMB with matching electrical characteristics and a different naming series, suitable as a functional equivalent.

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