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STMicroelectronics 1.28 V Uni-Directional Zener Diode, Surface Mount 2-Pin, 400 W Power Dissipation SMM4F28A-TR

Category Zener Diodes Brand STMicroelectronics Condition New

Specifications

Country of Origin India
Brand STMicroelectronics
Height 0.95mm
Length 3.9mm
Model SMM4F28A-TR
Mount Type Surface
Series SMM4FxxA
Maximum Operating Temperature 175°C
Package Type StmiteFLAT
Minimum Operating Temperature -55°C
Pin Count 2
Number of Elements per Chip 1
Maximum Power Dissipation Pd 400W
Diode Configuration Single
Maximum Reverse Leakage Current 200nA
Nominal Zener Voltage Vz 28V
Zener Type Uni-Directional
Stand-off voltage range from 5 V to 33 V

Key Features

  • Single diode configuration with 2 pins for surface mounting applications.
  • Maximum power dissipation of 400 W ensures robust surge protection.
  • Low maximum reverse leakage current of 200 nA improves efficiency.
  • Operates reliably from -55°C to 175°C operating temperature range.
  • Compact dimensions of 3.9 mm length and 0.95 mm height minimize PCB space consumption.
  • Stand-off voltage range from 5 V to 33 V for versatile protection use cases.
  • Manufactured with STmiteFLAT package type suitable for high-end equipment and SMPS.
  • Halogen free molding compound enhances environmental compliance.

Product Description

STMicroelectronics SMM4F28A-TR is a uni-directional Zener diode with a nominal Zener voltage of 1.28 V, designed for surface mount technology applications. This diode offers a maximum power dissipation capacity of 400 W (10/1000 μs), making it suitable for protecting sensitive electronic equipment from electrostatic discharges and electrical overstress.

The device features a planar technology that ensures compatibility with high-end equipment and switched-mode power supplies (SMPS), providing low leakage current and high junction temperature tolerance for enhanced reliability and stability over extended use.

Its compact STmiteFLAT package minimizes PCB space requirements, making it ideal for modern electronics with limited space. The maximum reverse leakage current is only 200 nA, supporting energy-efficient designs. The diode can operate within a temperature range of -55°C to 175°C, allowing it to perform well in demanding industrial and commercial environments.

The stand-off voltage range spans from 5 V to 33 V, ensuring versatile application options. Furthermore, the device contains a halogen-free molding compound aligning with environmental standards. The low clamping voltage characteristic offers an improved safety margin to protect sensitive circuits, extending the lifespan of protected components.

The SMM4FxxA series is widely used in industrial, automotive, telecommunications, and consumer electronics applications where reliable surge protection is critical. The robust construction and tested performance make this diode an excellent choice for enhancing circuit durability against transient voltage spikes.

Single diode configuration with 2 pins. Maximum power dissipation of 400 W. Reverse leakage current of 200 nA maximum. Operating temperature from -55°C to 175°C. Compact size with 3.9 mm length and 0.95 mm height. Stand-off voltage from 5 V to 33 V.

STmiteFLAT package with halogen-free molding. Low clamping voltage for better circuit protection. Designed for ESD and electrical overstress protection. Explore our extensive range of semiconductor diodes at EnvMart to find quality components for your next project or industrial application.

Explore more products in our Zener Diodes category.

STMicroelectronics 1.28 V Uni-Directional Zener Diode, Surface Mount 2-Pin, 400 W Power Dissipation SMM4F28A-TR
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Frequently Asked Questions

The maximum power dissipation of this model is 400 W, making it suitable for protecting sensitive electronic equipment from electrical overstress.

The nominal Zener voltage of the SMM4F28A-TR is 1.28 V.

It operates reliably within a temperature range of -55°C to 175°C.

The maximum reverse leakage current is 200 nA, which helps improve energy efficiency.

This unit has compact dimensions of 3.9 mm in length and 0.95 mm in height, minimizing PCB space consumption.

It is manufactured with an STmiteFLAT package type, which is suitable for high-end equipment and switched-mode power supplies (SMPS).

The stand-off voltage range spans from 5 V to 33 V, allowing for versatile protection use cases.

This diode features a single diode configuration with 2 pins, designed for surface mounting applications.

It is widely used in industrial, automotive, telecommunications, and consumer electronics applications where reliable surge protection is critical.

Yes, it is made with a halogen-free molding compound, enhancing its environmental compliance.

This model belongs to the SMM4FxxA series, which is known for its robust performance in surge protection.

It is a uni-directional Zener diode, designed specifically for surface mount technology applications.

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