STMicroelectronics

SM15T39CA

SM15T39CA Description

The SM15T39CA from STMicroelectronics is a bidirectional Zener-type TVS diode designed for general-purpose transient voltage suppression in sensitive electronic circuits. Housed in a compact SMC (DO-214AB) surface-mount package, it offers robust protection with a 33.3V reverse standoff voltage (Typ) and a 37.1V minimum breakdown voltage. Its 69.7V maximum clamping voltage at 143A peak pulse current (8/20µs) ensures effective suppression of high-energy transients, while its 1500W peak pulse power (1.5kW) rating provides reliable performance under extreme conditions. Compliant with ROHS3 and REACH standards, this diode is ideal for automotive, industrial, and telecommunications applications where space and reliability are critical.

SM15T39CA Features

• Bidirectional Protection: Single-channel design for clamping both positive and negative transients.
• High Power Handling: 1500W peak pulse power (8/20µs) ensures durability against surges.
• Low Clamping Voltage: 69.7V max at 143A, minimizing stress on protected components.
• Surface-Mount SMC Package: Compact DO-214AB footprint for high-density PCB designs.
• Wide Operating Range: -55°C to +150°C junction temperature suitability for harsh environments.
• Compliance: ROHS3, REACH Unaffected, and EAR99 for global market compatibility.

SM15T39CA Applications

• Industrial Electronics: Protects PLCs, sensors, and motor drives from voltage spikes.
• Automotive Systems: Safeguards ECUs, CAN buses, and infotainment systems against load dump and ESD.
• Telecom Infrastructure: Shields base stations and networking equipment from lightning-induced surges.
• Consumer Electronics: Used in power supplies and USB ports for ESD protection.
• Renewable Energy: Protects solar inverters and battery management systems from transient events.

Conclusion of SM15T39CA

The SM15T39CA stands out for its high power dissipation, low clamping voltage, and bidirectional protection in a compact SMC package. Its wide application range and compliance with stringent environmental standards make it a versatile choice for engineers designing robust surge protection solutions. Compared to similar models, its optimized balance of standoff voltage and clamping performance ensures superior reliability in demanding scenarios. Ideal for space-constrained, high-reliability designs, this TVS diode is a critical component for modern electronic systems exposed to transient threats.