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SMBJ85A from FAIRCHILD,Fairchild Semiconductor

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SMBJ85A

Manufacturer: FAIRCHILD, CONCORD, MICROSEMI, WILLAS

Zener TVSs
Partnumber Manufacturer Quantity Availability
SMBJ85A FAIRCHILD, CONCORD, MICROSEMI, WILLAS 116962 In Stock

Description and Introduction

Zener TVSs The SMBJ85A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by WILLAS.  

### **Specifications:**  
- **Voltage - Reverse Standoff (V_RWM):** 85V  
- **Voltage - Breakdown (V_BR):** Min. 94.4V, Typ. 105V  
- **Voltage - Clamping (V_C):** 137V @ 10A (I_PP)  
- **Peak Pulse Current (I_PP):** 10A (8/20μs)  
- **Power - Peak Pulse (P_PP):** 1500W  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** SMB (DO-214AA)  

### **Descriptions & Features:**  
- **Unidirectional TVS Diode:** Protects against positive transient voltage spikes.  
- **Low Clamping Voltage:** Ensures effective protection for sensitive circuits.  
- **Fast Response Time:** Reacts quickly to transient events (typically <1ns).  
- **High Surge Capability:** Handles large transient currents.  
- **RoHS Compliant:** Meets environmental standards.  
- **Applications:** Used in power supplies, communication systems, automotive electronics, and industrial equipment for ESD and surge protection.  

This information is based on WILLAS's datasheet for the SMBJ85A TVS diode.

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • P6SMB91A --: Same SMB package unidirectional TVS with a comparable standoff voltage and clamping performance, widely available and a common drop-in replacement.
  • 1SMB85AT3G --: SMB-packaged unidirectional TVS with matching 85V standoff and similar surge rating, from a major supplier with strong availability.
  • SMAJ85A --: Unidirectional TVS with the same 85V standoff voltage in the smaller SMA package; suitable if slightly lower peak pulse power and board space allow.

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