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SMAJ170CA from CONCORD

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SMAJ170CA

Manufacturer: CONCORD, MICROSEMI, FAIRCHILD

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Partnumber Manufacturer Quantity Availability
SMAJ170CA CONCORD, MICROSEMI, FAIRCHILD 146800 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The SMAJ170CA is a transient voltage suppressor (TVS) diode manufactured by Fairchild Semiconductor (now part of ON Semiconductor). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Peak Pulse Power (PPP):** 400W (10/1000μs waveform)  
- **Breakdown Voltage (VBR):** 189V (min) – 209V (max)  
- **Standoff Voltage (VRWM):** 170V  
- **Clamping Voltage (VC):** 274V (at IPP = 1A)  
- **Maximum Reverse Leakage Current (IR):** 1μA (at VRWM)  
- **Junction Capacitance (CJ):** 50pF (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The SMAJ170CA is a bidirectional TVS diode designed to protect sensitive electronics from voltage transients, such as ESD (electrostatic discharge), lightning, and inductive load switching. It is housed in a DO-214AC (SMA) package.  

### **Features:**  
- **Bidirectional Protection:** Guards against both positive and negative voltage transients.  
- **Low Clamping Voltage:** Provides effective protection for sensitive circuits.  
- **Fast Response Time:** Responds to transients in nanoseconds.  
- **High Surge Capability:** Handles high transient energy.  
- **RoHS Compliant:** Meets environmental standards.  

This diode is commonly used in telecommunications, industrial, and automotive applications for surge protection.  

(Note: Fairchild Semiconductor was acquired by ON Semiconductor, so newer datasheets may reflect ON branding.)

Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • SMBJ170CA --: Same 170V bidirectional TVS in a larger SMB package with higher surge rating; widely available and a common drop-in upgrade.
  • P6SMB170CA --: 170V bidirectional transient voltage suppressor in SMB package, functionally equivalent with comparable clamping voltage.
  • 1.5SMC170CA --: 170V bidirectional TVS in SMC package offering similar standoff voltage and higher peak pulse power for robust protection.

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