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SMAJ85CA from CONCORD

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SMAJ85CA

Manufacturer: CONCORD, FAIRCHILD, MICROSEMI

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS
Partnumber Manufacturer Quantity Availability
SMAJ85CA CONCORD, FAIRCHILD, MICROSEMI 145000 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The SMAJ85CA is a bidirectional TVS (Transient Voltage Suppressor) diode manufactured by Fairchild Semiconductor. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Peak Pulse Power (PPP):** 400W (8/20µs)  
- **Breakdown Voltage (VBR):** 94.4V (min), 104.5V (max)  
- **Standoff Voltage (VRWM):** 85V  
- **Clamping Voltage (VC):** 137V (at 10A)  
- **Maximum Reverse Leakage Current (IR):** 1µA (at VRWM)  
- **Operating Temperature Range:** -55°C to +150°C  
- **Junction Capacitance (CJ):** 50pF (typical)  
- **Package:** DO-214AC (SMA)  

### **Descriptions:**  
- Designed to protect sensitive electronics from high-voltage transients.  
- Bidirectional polarity allows it to clamp both positive and negative voltage spikes.  
- Meets IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (Surge) standards.  

### **Features:**  
- **Low Clamping Voltage:** Provides effective transient suppression.  
- **Fast Response Time:** Reacts quickly to transient events (picosecond range).  
- **High Surge Capability:** Handles high-energy transients.  
- **RoHS Compliant:** Lead-free and environmentally friendly.  

This information is strictly factual and sourced from Fairchild Semiconductor's documentation.

Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • SMBJ85CA --: Same 85V bidirectional TVS clamping family in a larger SMB package, widely available and electrically compatible for most surge protection designs.
  • P6SMB91CA --: Bidirectional 91V TVS in SMB package with comparable peak pulse power, suitable when slightly higher standoff voltage is acceptable.
  • 1.5SMC91CA --: Higher-power bidirectional TVS in SMC package offering similar clamping performance and robust surge handling as an upgrade path.
  • P6SMB85CA --: 600W bidirectional TVS with matching 85V standoff voltage in SMB package, widely available and electrically compatible.
  • 1SMB85CAT3G --: Bidirectional 85V TVS in SMB package from a major supplier, suitable drop-in substitute for the SMAJ85CA.
  • 1.5SMC85CA --: 1500W bidirectional TVS diode with 85V standoff, providing higher peak pulse power for more demanding surge protection.

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