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SMBJ85CA from MICROSEMI

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SMBJ85CA

Manufacturer: MICROSEMI, CONCORD, FAIRCHILD

Zener TVSs

Partnumber Manufacturer Quantity Availability
SMBJ85CA MICROSEMI, CONCORD, FAIRCHILD 113000 In Stock

Description and Introduction

Zener TVSs The SMBJ85CA is a bidirectional TVS (Transient Voltage Suppressor) diode manufactured by Fairchild Semiconductor (now part of ON Semiconductor). Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Voltage - Reverse Standoff (V₃₀):** 85V  
- **Voltage - Breakdown (VBR):** 94.4V (min)  
- **Voltage - Clamping (VCL):** 137V (max) at 10A  
- **Peak Pulse Current (IPP):** 10A (8/20µs waveform)  
- **Power - Peak Pulse (PPK):** 600W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** SMB (DO-214AA)  

### **Descriptions:**  
- **Type:** Bidirectional TVS Diode  
- **Application:** Protects sensitive electronics from voltage transients, surges, and ESD (Electrostatic Discharge).  
- **Configuration:** Two Zener diodes connected back-to-back for bidirectional clamping.  

### **Features:**  
- **Low Clamping Voltage:** Provides effective transient protection.  
- **Fast Response Time:** Reacts quickly to transient events (picosecond range).  
- **High Surge Capability:** Handles high transient currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **Bidirectional Operation:** Protects against both positive and negative voltage transients.  

This diode is commonly used in power supplies, communication systems, and industrial electronics for surge protection.  

(Note: Fairchild Semiconductor was acquired by ON Semiconductor, so the part may now be listed under ON Semi's product line.)

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • P6SMB91CA --: Bidirectional TVS diode in the P6SMB series with a comparable 600W peak pulse rating and a standoff voltage close to the SMBJ85CA, suitable for similar transient protection.
  • 1SMB90CA --: Bidirectional SMB-package TVS diode with 400W peak pulse power and a nearby standoff voltage, offering a compact drop-in style alternative for clamping transients.
  • SMAJ85CA --: Bidirectional TVS diode in the SMAJ series with the same 85V standoff voltage; lower 400W surge rating but a good fit for lower-energy transient suppression where space is limited.
  • 1SMB85CA --: Bidirectional 85V TVS in SMB package with matching clamping characteristics, from a different series/prefix so it is easily distinguished from the source.

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