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SMAJ40

Manufacturer: VISHAY, Shind, SHIN

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS
Partnumber Manufacturer Quantity Availability
SMAJ40 VISHAY, Shind, SHIN 3800 In Stock

Description and Introduction

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS The SMAJ40 is a transient voltage suppressor (TVS) diode manufactured by Shindengen. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Part Number:** SMAJ40  
- **Manufacturer:** Shindengen  
- **Type:** Uni-directional or Bi-directional TVS Diode (depending on variant)  
- **Peak Pulse Power:** 400W (10/1000μs waveform)  
- **Breakdown Voltage (VBR):** 44.4V (min) – 49.2V (max)  
- **Standoff Voltage (VRWM):** 40V  
- **Clamping Voltage (VC):** 64.5V (max) at 1A  
- **Peak Pulse Current (IPP):** 6.2A  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** SMA (DO-214AC)  

### **Descriptions:**  
- Designed to protect sensitive electronics from voltage transients, ESD, and surges.  
- Used in applications such as power supplies, communication lines, and automotive systems.  
- Compliant with industry standards for surge protection.  

### **Features:**  
- **Fast Response Time:** Reacts quickly to transient events (nanosecond range).  
- **High Surge Capability:** Handles high transient currents.  
- **Low Clamping Voltage:** Limits voltage to safe levels for downstream components.  
- **RoHS Compliant:** Meets environmental standards.  

For exact details, refer to the official Shindengen datasheet.

Application Scenarios & Design Considerations

SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS

Alternative Part Number

  • P4SMA40A --: Same SMA package unidirectional TVS diode with 40V standoff voltage and comparable clamping performance, widely available from a major TVS supplier.
  • SMBJ40A --: SMB package TVS with identical 40V standoff and higher surge rating; slightly larger footprint but electrically compatible for most protection designs.
  • 1SMA40AT3G --: SMA-packaged 40V unidirectional TVS diode from a reputable manufacturer, offering similar clamping voltage and power handling as a drop-in style alternative.
  • SMAJ40A --: Equivalent SMA TVS diode family with matching 40V working voltage and similar clamping performance.
  • SMA6J40A --: Higher surge-rated SMA TVS diode with 40V standoff, suitable where extra peak pulse power margin is acceptable.

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