SMAJ28A

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SMAJ28A

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TVS DIODE 32.8VWM 45.4VC DO214AC

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Thông số kỹ thuật

thuộc tính Giá trị
Package / Case Tape & Reel (TR)
Series SMAJ
Part Status Active
Type Zener
Unidirectional Channels 1
Voltage - Reverse Standoff (Typ) 32.8V
Voltage - Clamping (Max) @ Ipp 45.4V
Power - Peak Pulse 400W
Applications General Purpose
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Surface Mount

Tổng quan

Description

The SMAJ28A is a 28V unidirectional TVS diode designed to protect sensitive electronics from voltage transients, such as ESD, lightning, and inductive load switching. Key features include:
- Standoff Voltage (VWM): 28V
- Breakdown Voltage (VBR): 31.1V (min)
- Peak Pulse Current (IPP): 24.2A (8/20µs)
- Low Clamping Voltage: Limits overvoltage to safe levels
- Package: SMA (DO-214AC) for surface-mount applications
Commonly used in power supplies, communication ports, and automotive systems, the SMAJ28A provides robust ESD and surge protection (IEC 61000-4-2/4-5). Its fast response time (<1ns) ensures quick reaction to transient threats.
For bidirectional protection, consider the SMAJ28CA. Always verify circuit requirements before selection.

Features

The SMAJ28A is a 28V unidirectional TVS diode designed for transient voltage suppression in electronic circuits. Key features:
- Voltage Rating: Standoff voltage of 28V, breakdown voltage (min) 31.1V, clamping voltage 45.4V at 10A.
- Peak Pulse Power: 400W (8/20µs pulse).
- Low Leakage Current: 1µA max at standoff voltage.
- Fast Response Time: <1ps for quick surge protection.
- Package: DO-214AC (SMA) for compact PCB mounting.
- Applications: Protects sensitive electronics from ESD, lightning, and inductive surges in power lines, communication ports, and automotive systems.
Ideal for high-reliability, space-constrained designs.

Pinout

The SMAJ28A is a unidirectional TVS diode designed for transient voltage suppression.
- Pin Count: 2 (standard SMA package: anode and cathode)
- Function: Protects circuits from voltage spikes by clamping transient voltages to a safe level (28V standoff, 38.9V clamping voltage at 1A).
It’s commonly used in ESD protection for power lines, data lines, and communication interfaces.
Key specs:
- Peak Pulse Power: 400W (8/20µs waveform)
- Breakdown Voltage: 31.1V (min)
- Package: SMA (DO-214AC)
Concise and robust for surge protection.

Manufacturer

The SMAJ28A is a transient voltage suppressor (TVS) diode manufactured by Littelfuse, a leading global company specializing in circuit protection, power control, and sensing technologies.
Littelfuse is known for its high-quality electronic components, including fuses, TVS diodes, varistors, and other protection devices. The company serves industries such as automotive, industrial, telecommunications, and consumer electronics, providing solutions to safeguard circuits from overvoltage and overcurrent events.
The SMAJ28A is part of Littelfuse’s SMAJ series, designed for surge protection in applications like power supplies, data lines, and communication systems. It offers robust clamping performance and fast response to transient voltage spikes.
In summary:
- Manufacturer: Littelfuse
- Type: TVS diode (surge protection)
- Company Focus: Circuit protection & power management solutions.

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