STMicroelectronics

SMAJ6.5A-TR

SMAJ6.5A-TR Description

The SMAJ6.5A-TR from STMicroelectronics is a unidirectional Zener-type TVS (Transient Voltage Suppression) diode designed for general-purpose surge protection in electronic circuits. Packaged in a surface-mount SMA form factor and supplied in Tape & Reel (TR), this diode offers robust 6.5V reverse standoff voltage with a minimum breakdown voltage of 7.2V, ensuring reliable clamping during transient events. Its peak pulse power dissipation of 400W and clamping voltage of 14.5V at 160A (8/20µs) make it highly effective in suppressing high-energy transients, protecting sensitive components from voltage spikes.

SMAJ6.5A-TR Features

• High Surge Capability: Handles 160A peak pulse current (8/20µs) and 400W peak pulse power, ideal for harsh electrical environments.
• Precise Voltage Clamping: Clamps transients at 14.5V max, ensuring downstream circuitry remains protected.
• Low Standoff Voltage: 6.5V reverse standoff suits low-voltage applications like 5V logic lines or communication interfaces.
• RoHS3 & REACH Compliant: Meets environmental regulations, suitable for green electronics.
• MSL1 (Unlimited): No moisture sensitivity concerns, simplifying storage and assembly.
• Unidirectional Protection: Optimized for positive voltage transients, commonly used in DC power rails.

SMAJ6.5A-TR Applications

• Industrial Electronics: Protects PLC I/O ports, sensor interfaces, and motor drives from inductive load surges.
• Consumer Devices: Safeguards USB ports, HDMI lines, and power management ICs in smart home gadgets.
• Automotive Systems: Used in 12V/24V automotive buses to mitigate load-dump transients.
• Telecom Infrastructure: Shields RS-485/232 lines and Ethernet PHYs from ESD and lightning-induced surges.
• Power Supplies: Acts as a secondary protection layer in DC-DC converters and AC-DC adapters.

Conclusion of SMAJ6.5A-TR

The SMAJ6.5A-TR stands out for its high power handling, precise clamping, and compact SMA package, making it a versatile choice for transient suppression in low-voltage systems. Its unidirectional design and compliance with industry standards ensure reliability in diverse applications, from industrial controls to consumer electronics. For engineers seeking cost-effective, high-performance TVS protection, this diode delivers a balanced combination of robustness and precision.