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1SMA4738 from SEMICOND

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15.625ms

1SMA4738

Manufacturer: SEMICOND

1.25 Watts Surface Mount Silicon Zener Diode

Partnumber Manufacturer Quantity Availability
1SMA4738 SEMICOND 35000 In Stock

Description and Introduction

1.25 Watts Surface Mount Silicon Zener Diode The **1SMA4738** is a high-performance Zener diode designed for voltage regulation and protection in electronic circuits. As part of the **SMA** package series, it offers a compact, surface-mount design, making it suitable for modern PCB applications where space efficiency is critical.  

With a nominal Zener voltage of **8.2V** and a power dissipation rating of **1.5W**, this component is well-suited for stabilizing voltage levels in power supplies, signal conditioning, and transient suppression. Its robust construction ensures reliable operation under varying load conditions while maintaining low leakage current.  

Key features of the **1SMA4738** include a tight voltage tolerance (±5%) and excellent thermal characteristics, allowing it to perform efficiently across a wide temperature range. The diode’s ability to clamp excessive voltages makes it particularly useful in safeguarding sensitive components from electrical surges.  

Engineers often integrate the **1SMA4738** into automotive, industrial, and consumer electronics applications where precise voltage control is essential. Its surface-mount compatibility simplifies automated assembly processes, reducing manufacturing costs.  

For optimal performance, proper heat dissipation and adherence to specified operating conditions are recommended. When used correctly, the **1SMA4738** provides a dependable solution for voltage regulation and circuit protection.

Partnumber Manufacturer Quantity Availability
1SMA4738 PANJIT 35000 In Stock

Description and Introduction

1.25 Watts Surface Mount Silicon Zener Diode The part 1SMA4738 is manufactured by PANJIT. It is a TVS (Transient Voltage Suppressor) diode designed for transient voltage suppression applications. The key specifications include:

- **Peak Pulse Power**: 400W (8/20µs waveform)
- **Standoff Voltage (V_RWM)**: 6.8V
- **Breakdown Voltage (V_BR)**: 7.53V (min) to 8.38V (max) at 1mA
- **Clamping Voltage (V_C)**: 12.4V at 16.5A
- **Maximum Reverse Leakage Current (I_R)**: 1µA at V_RWM
- **Operating Temperature Range**: -55°C to +150°C
- **Package**: SMA (DO-214AC)

This diode is commonly used for protecting sensitive electronics from voltage transients, such as ESD (Electrostatic Discharge), lightning, and other surge events.

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