SMBJ6.0A LITTELFUSE

The LITTELFUSE SMBJ6.0A is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust circuit protection in a compact surface-mount package. This component belongs to the SMBJ series and is housed in a DO-214AA package, making it suitable for automated assembly. Its core function is to clamp transient over-voltage events, safeguarding sensitive electronic components. With a peak pulse power dissipation of 600W and a breakdown voltage range of 6.67V to 7.67V, it is engineered to handle high surge currents up to 100A. It operates effectively across a wide temperature range from -55°C to +150°C, ensuring reliability in demanding environments such as telecommunications infrastructure, industrial power supplies, and automotive systems.

Features

• High Surge Protection: Capable of withstanding peak pulse currents up to 100A, providing robust defense against transient voltage spikes.
• Compact SMD Footprint: The DO-214AA (SMB) package offers a space-saving solution for high-density PCB designs.
• Wide Operating Temperature Range: Supports reliable performance from -55°C to +150°C, suitable for industrial and automotive applications.
• Precise Clamping Voltage: Features a specified breakdown voltage of 6.67V to 7.67V for predictable over-voltage protection.

Technical Specifications

• Polarity: Unidirectional
• Operating Voltage: 3.5 V
• Breakdown Voltage: 6.67 V to 7.67 V
• Peak Surge Current: 100 A
• Peak Pulse Power Dissipation: 600 W
• Package / Case: DO-214AA
• Minimum Operating Temperature: -55 °C
• Maximum Operating Temperature: +150 °C
• Channels: 1 Channel
• Dimensions: 4.57 mm x 3.94 mm x 2.62 mm (L x W x H)
• Termination Style: SMD/SMT
• Packaging: Reel

Pin Configuration and Functions

• No pin definition: This is a two-terminal passive component. Pin 1 is typically the anode and pin 2 is the cathode for a unidirectional TVS diode.

Typical Applications

• Telecommunications equipment: Protecting data lines and power inputs from ESD and lightning-induced surges.
• Automotive electronics: Safeguarding ECUs and sensors from load-dump and transients.
• Industrial power supplies: Clamping voltage spikes on DC power rails.
• Consumer electronics: Providing ESD protection for USB ports and other I/O interfaces.

Equivalent / Alternative Parts

• SMBJ6.0A (ON Semiconductor): Equivalent unidirectional TVS with matching voltage and power ratings.
• SMBJ6.0A (Vishay): Direct functional alternative offering similar clamping performance.

Advantages

• High Power Handling: The 600W peak pulse power rating offers superior protection compared to lower-power TVS diodes in similar packages.
• Excellent Thermal Performance: The wide operating temperature range up to 150°C ensures stability in high-ambient environments.
• Fast Response Time: TVS diodes react almost instantaneously to transients, effectively diverting surge currents away from protected circuits.

Limitations

• Unidirectional Clamping: Only protects against positive voltage transients relative to ground; not suitable for AC lines or bipolar signals without additional components.
• Fixed Voltage Rating: The 6.67-7.67V breakdown voltage is not adjustable, limiting flexibility for circuits operating at significantly different voltages.
• Parasitic Capacitance: Like all TVS diodes, it has inherent capacitance which may affect high-speed data line integrity.

Package Information

DO-214AA (SMB) package (4.57mm x 3.94mm), 2 pins, surface mount.

Manufacturer Information

LITTELFUSE is a renowned global manufacturer specializing in circuit protection, power control, and sensing technologies. The company provides a wide portfolio of products, including fuses, semiconductors, polymers, and relays, known for their high reliability and performance in demanding applications across various industries.

Design-in Tips

• Minimize Trace Length: Place the TVS diode as close as possible to the protected connector or IC to reduce parasitic inductance and maximize clamping efficiency.
• Ensure Adequate Grounding: Use a low-impedance ground connection for the TVS cathode to provide a clean path for surge currents.
• Consider Power Dissipation: For repetitive transients, ensure the average power dissipation remains within the component's derated limits at the maximum operating temperature.

Lifecycle Status & PCN/PDN Notes

Lifecycle status information is not provided. No product change notifications (PCN) or product discontinuation notices (PDN) are referenced in the available data.