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SMCJ85A from CONCORD

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SMCJ85A

Manufacturer: CONCORD, MICROSEMI, FAIRCHILD

TECHNICAL SPECIFICATIONS OF SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR
Partnumber Manufacturer Quantity Availability
SMCJ85A CONCORD, MICROSEMI, FAIRCHILD 113000 In Stock

Description and Introduction

TECHNICAL SPECIFICATIONS OF SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR The **SMCJ85A** is a **Transient Voltage Suppressor (TVS) Diode** manufactured by **Microsemi** (now part of **Microchip Technology**).  

### **Specifications:**  
- **Peak Pulse Power (PPP):** 1500W (10/1000μs waveform)  
- **Breakdown Voltage (VBR):** 94.05V (min) to 103.95V (max)  
- **Standoff Voltage (VRWM):** 85V  
- **Clamping Voltage (VC):** 137V at 10A (IPP)  
- **Peak Pulse Current (IPP):** 10.95A  
- **Leakage Current (IR):** 1μA (max) at VRWM  
- **Operating Temperature Range:** -55°C to +150°C  
- **Junction Capacitance (CJ):** 500pF (typical)  
- **Package:** DO-214AB (SMC)  

### **Description:**  
The **SMCJ85A** is a **unidirectional** TVS diode designed to protect sensitive electronics from high-voltage transients, such as ESD, lightning, and inductive load switching. It offers fast response times and high surge capability.  

### **Features:**  
- **Low Clamping Voltage** for superior protection  
- **High Surge Capability** (1500W peak pulse power)  
- **RoHS Compliant**  
- **AEC-Q101 Qualified** (for automotive applications)  
- **Unidirectional Polarity** (protects against positive transients)  

This device is commonly used in **telecommunications, automotive, industrial, and power supply circuits** for transient voltage suppression.  

Would you like additional details on any specific parameter?

Application Scenarios & Design Considerations

TECHNICAL SPECIFICATIONS OF SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR

Alternative Part Number

  • 1.5SMC91A --: Same SMC (DO-214AB) package unidirectional TVS with comparable standoff voltage and clamping performance, widely available and a common drop-in substitute.
  • SMDJ85A --: Higher-power SMDJ series in the same SMC footprint with matching 85V standoff, offering greater surge capability as a robust replacement.
  • P6SMB91A --: SMB-package unidirectional TVS with similar standoff and clamping voltage; smaller footprint but electrically suitable for many of the same protection roles.
  • 1SMC85A --: Same 1500W unidirectional TVS diode with 85V standoff voltage and SMC package, direct functional equivalent from a major TVS supplier.
  • P6SMB85A --: Unidirectional TVS with matching 85V standoff and similar clamping performance; 600W rating is lower so verify surge margin, but widely available and pin-compatible in SMB.
  • SMAJ85A --: Same 85V standoff unidirectional TVS in SMA package; lower 400W power rating requires checking surge requirements, but offers a compact drop-in style alternative.
  • 1SMC85AT3G --: Same 1500W unidirectional TVS class with 85V standoff voltage, from the successor brand of Fairchild, drop-in compatible in most designs.
  • P6SMB100A --: Widely available SMB TVS with comparable clamping performance for 85V standoff applications, good second-source option.

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