SMAJ28A-TR

1. Product Overview

1.1 Belonging Product

The SMAJ28A-TR belongs to the category of electronic components, specifically within the realm of semiconductor devices.

1.2 Basic Information Overview

• Category: Electronic Components
• Use: Voltage Suppression and Transient Protection
• Characteristics: Fast response time, low clamping voltage, compact size
• Package: DO-214AC (SMA)
• Essence: Protects sensitive electronic components from voltage transients
• Packaging/Quantity: Available in tape and reel packaging, quantity varies by supplier

2. Specifications

• Part Number: SMAJ28A-TR
• Standoff Voltage: 28V
• Breakdown Voltage: 31.1V
• Clamping Voltage: 45.4V
• Peak Pulse Current: 36.1A
• Operating Temperature Range: -55°C to +150°C
• Storage Temperature Range: -55°C to +150°C

3. Detailed Pin Configuration

The SMAJ28A-TR is a unidirectional TVS (transient voltage suppressor) diode with two pins. The cathode is connected to the ground or reference voltage, while the anode is connected to the protected circuit.

4. Functional Features

• Provides protection against voltage transients and surges
• Fast response time ensures minimal damage to sensitive components
• Low clamping voltage diverts excess voltage away from the protected circuit

5. Advantages and Disadvantages

5.1 Advantages

• Compact size allows for easy integration into circuit designs
• Fast response time provides effective protection
• Low clamping voltage minimizes stress on protected components

5.2 Disadvantages

• Limited peak pulse current handling compared to larger TVS diodes
• Standoff voltage may not be suitable for higher voltage applications

6. Working Principles

When a transient voltage surge occurs, the SMAJ28A-TR conducts current and clamps the voltage to a safe level, protecting the downstream circuitry from damage. This is achieved through the rapid conduction of the diode when the voltage exceeds its breakdown voltage.

7. Detailed Application Field Plans

The SMAJ28A-TR is commonly used in various electronic systems, including: - Power supply units - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

8. Detailed and Complete Alternative Models

Some alternative models to the SMAJ28A-TR include: - SMBJ28A-TR: Similar characteristics but in an SMB package - P6SMB28A: Higher peak pulse current rating in a larger package - SMCJ28A: Higher power dissipation capability in an SMC package

In conclusion, the SMAJ28A-TR is a vital component in protecting sensitive electronic circuits from voltage transients, offering fast response times and low clamping voltages. Its compact size and effectiveness make it a popular choice across various industries.

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