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SMCJ28A from FAIRCHILD,Fairchild Semiconductor

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SMCJ28A

Manufacturer: FAIRCHILD, MICROSEMI, CONCORD, MIC

Zener TVSs

Partnumber Manufacturer Quantity Availability
SMCJ28A FAIRCHILD, MICROSEMI, CONCORD, MIC 113750 In Stock

Description and Introduction

Zener TVSs The SMCJ28A is a transient voltage suppressor (TVS) diode manufactured by **Fairchild Semiconductor**. Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Peak Pulse Power (PPP):** 1500W (10/1000μs waveform)  
- **Breakdown Voltage (VBR):** 31.2V (min) to 34.5V (max)  
- **Standoff Voltage (VRWM):** 28V  
- **Maximum Clamping Voltage (VC):** 45.4V at 10A  
- **Peak Pulse Current (IPP):** 33.1A (8/20μs waveform)  
- **Leakage Current (IR):** 1μA (max) at VRWM  
- **Junction Capacitance (CJ):** 500pF (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The **SMCJ28A** is a **surface-mount TVS diode** designed to protect sensitive electronics from high-voltage transients, such as ESD, lightning, and inductive load switching. It is part of Fairchild's **SMCJ series**, offering **bidirectional** protection in a **DO-214AB (SMC) package**.  

### **Features:**  
- **Low Clamping Voltage** for effective transient suppression  
- **Fast Response Time** (typically <1ps)  
- **High Surge Capability** (1500W peak pulse power)  
- **Bidirectional Polarity** for AC/DC circuit protection  
- **RoHS Compliant** (lead-free and halogen-free)  
- **AEC-Q101 Qualified** for automotive applications  

This information is strictly based on the manufacturer's datasheet for the **SMCJ28A** by **Fairchild Semiconductor**.

Application Scenarios & Design Considerations

Zener TVSs

Alternative Part Number

  • 1SMC28AT3G --: Same 1500W unidirectional TVS diode with 28V standoff voltage in the SMC package, directly interchangeable.
  • P6SMB28A --: Unidirectional TVS with matching 28V standoff and SMB footprint; lower power rating but suitable for many clamp applications.
  • SMAJ28A --: 28V standoff unidirectional TVS in SMA package, good drop-in for space-constrained designs with lower surge requirement.

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