Semtech Corporation today introduced the TDS5311P, the first circuit protection device engineered for 48‑V USB Power Delivery (PD) Extended Power Range (EPR) systems. The device delivers near‑constant clamping voltage from the first microsecond of a surge event, protects power buses up to 53 V, and can absorb 1,512 W of peak pulse power with a 24‑A peak pulse current. It meets IEC 61000‑4‑5 industrial surge standards and is packaged in a compact 2.0 × 2.0 mm DFN‑6 package, making it suitable for space‑constrained high‑power consumer and industrial devices.
The TDS5311P builds on Semtech’s SurgeSwitch® technology, which uses a surge‑rated field‑effect transistor architecture to provide consistent protection across a wide temperature range of –40 °C to +125 °C. The near‑constant clamping voltage and rapid response time differentiate it from traditional TVS diodes, ensuring that 48‑V USB‑PD EPR systems—used in next‑generation laptops, monitors, and industrial equipment—receive reliable, industrial‑grade protection against over‑voltage transients.
Semtech’s launch of the TDS5311P expands its SurgeSwitch portfolio into the high‑power USB‑PD market, a segment that is growing alongside the company’s broader focus on high‑performance semiconductors for data centers, IoT connectivity, and cellular infrastructure. Fiscal 2026 revenue exceeded $1 billion, with the Signal Integrity segment—driven by data‑center demand—showing strong growth, while the Analog Mixed Signal and Wireless segment, which now includes the new 48‑V protection device, is also expanding. The IoT segment has experienced softness, but the new product strengthens the company’s position in the high‑power niche.
"USB Power Delivery Extended Power Range is bringing 48 V into application environments that demand industrial‑grade reliability," said Tamir Reshef, vice president of product marketing and applications for Semtech’s Analog Mixed Signal and Wireless group. "The TDS5311P gives designers the consistent protection behavior those systems require, in a package small enough to fit the space constraints of the devices they're building."
The TDS5311P’s introduction positions Semtech as a first mover in the 48‑V USB‑PD EPR protection space, offering a solution that outperforms conventional TVS diodes in both speed and voltage stability. By addressing a critical need for high‑power USB‑PD systems, the device supports the company’s strategy to capture market share in the rapidly expanding USB‑PD ecosystem and reinforces its competitive advantage in the circuit protection market.
The launch underscores Semtech’s commitment to expanding its high‑performance semiconductor portfolio and supports its broader strategy of leveraging AI data‑center growth and advanced optical components. The new 48‑V protection device is expected to contribute to revenue growth in the Analog Mixed Signal and Wireless segment and to strengthen the company’s position in the high‑power USB‑PD market.
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