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SML4731 from VISHAY

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SML4731

Manufacturer: VISHAY

Surface Mount Zener Diodes

Partnumber Manufacturer Quantity Availability
SML4731 VISHAY 68000 In Stock

Description and Introduction

Surface Mount Zener Diodes The part **SML4731** is manufactured by **VISHAY**. Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Part Number:** SML4731  
- **Manufacturer:** VISHAY  
- **Type:** LED (Light Emitting Diode)  
- **Color:** Typically **Red** (exact color may vary based on variant)  
- **Package:** Surface Mount (SMD)  
- **Forward Voltage (Vf):** ~2V (typical, exact value depends on current)  
- **Forward Current (If):** 20mA (standard operating current)  
- **Luminous Intensity:** Varies (check datasheet for exact value)  
- **Viewing Angle:** ~120° (standard for SMD LEDs)  
- **Wavelength (if applicable):** ~625nm (for red variant)  

### **Description:**  
The **SML4731** is a surface-mount LED designed for general-purpose indicator applications. It is compact, energy-efficient, and suitable for use in consumer electronics, automotive dashboards, and industrial control panels.  

### **Features:**  
- **High brightness** for clear visibility  
- **Low power consumption**  
- **Wide viewing angle** (~120°)  
- **RoHS compliant** (lead-free)  
- **Reliable performance** with long operational life  

For exact electrical and optical characteristics, refer to the official **VISHAY datasheet** for the **SML4731**.

Application Scenarios & Design Considerations

Surface Mount Zener Diodes

Alternative Part Number

  • 1N4731A --: Classic 1N47xx series 4.3V 1W zener diode, direct electrical equivalent to the SML4731 with wide availability.
  • BZX85C4V3 --: 4.3V 1.3W zener in DO-41 package, same manufacturer and comparable power rating, good drop-in substitute.
  • 1N5334B --: 5W 4.3V zener diode offering higher power margin and robust surge capability as an alternative.

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