SMAJ4738E3/TR13

Product Overview

Category

The SMAJ4738E3/TR13 belongs to the category of electronic components, specifically within the realm of semiconductor devices.

Use

This product is primarily used for transient voltage suppression in electronic circuits to protect sensitive components from voltage spikes and surges.

Characteristics

• Voltage Suppression: Capable of suppressing transient voltages to protect downstream components.
• Fast Response Time: Rapid reaction to voltage spikes ensures minimal impact on the circuit.
• Compact Size: Small form factor for easy integration into electronic designs.
• Robustness: Designed to withstand high-energy transients without degradation.

Package

The SMAJ4738E3/TR13 is typically available in a surface mount package, which facilitates easy installation onto printed circuit boards (PCBs).

Essence

The essence of this product lies in its ability to safeguard electronic circuits from voltage transients, thereby enhancing the reliability and longevity of electronic devices.

Packaging/Quantity

The SMAJ4738E3/TR13 is commonly packaged in reels or tape and reel format, with quantities varying based on manufacturer specifications.

Specifications

• Part Number: SMAJ4738E3/TR13
• Standoff Voltage: 38V
• Peak Pulse Power: 400W
• Operating Temperature Range: -55°C to +150°C
• Breakdown Voltage: 42.2V
• Reverse Standoff Voltage: 38V

Detailed Pin Configuration

The SMAJ4738E3/TR13 features a standard SMC (DO-214AB) package with two pins for connection to the circuit board. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

• Transient Voltage Suppression: Provides rapid clamping of transient voltages to protect downstream components.
• Low Clamping Voltage: Ensures that the protected circuitry is exposed to minimal voltage during transient events.
• Bidirectional Protection: Offers protection for both positive and negative voltage transients.

Advantages and Disadvantages

Advantages

• Effective transient voltage suppression
• Fast response time
• Compact size for space-constrained designs
• Robust protection against voltage surges

Disadvantages

• Limited to specific voltage ratings
• Requires careful consideration of placement within the circuit for optimal performance

Working Principles

The SMAJ4738E3/TR13 operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage across it exceeds the breakdown voltage. This effectively diverts the excess energy away from the protected circuitry, preventing damage.

Detailed Application Field Plans

The SMAJ4738E3/TR13 finds application in various electronic systems, including: - Power supply units - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

• Alternative Model 1: SMBJ4738A
  • Standoff Voltage: 38V
  • Peak Pulse Power: 600W
  • Package: SMB (DO-214AA)
• Alternative Model 2: P6SMBJ4738CA
  • Standoff Voltage: 38V
  • Peak Pulse Power: 600W
  • Package: SMB (DO-214AA)

In conclusion, the SMAJ4738E3/TR13 serves as a crucial component in protecting electronic circuits from transient voltage events, offering a balance of performance, size, and reliability.

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