Semtech Corporation SC700WLTRC

Overview

TDS2211P from Semtech is a transient diverting suppressor designed to protect 22V-rated I/O or power lines against EOS, ESD, and surge events. It delivers ±30kV IEC 61000-4-2 contact/air ESD immunity, 40A (8/20μs) peak pulse current handling, 27.5–28V clamping voltage at 24–40A, and 20mΩ dynamic resistance - enabling robust USB Type-C PD bus protection in space-constrained industrial and portable systems.

For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include its constant-clamp behavior across temperature and current, DFN 1.6×1.6mm 6-lead footprint, low 175pF junction capacitance, and FET-based shunt architecture that avoids voltage rise with increasing IPP - critical for protecting sensitive 22V USB PD controllers and load switches.

Technical Context

The TDS2211P uses a surge-rated FET as the primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains stable (27.5–28V) from −40°C to +125°C and across 24–40A peak pulse current due to decreasing R_DS(on) under surge conditions.

It features three parallel input terminals (Pins 4–6) and three ground terminals (Pins 1–3), requiring all six pins to be connected for full 40A rating. Its 175pF capacitance at 22V/1MHz and 130–600nA reverse leakage support high-speed data line integration without signal integrity degradation.

Key Specifications

Pinout & Package

Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging (3,000 pcs/reel).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Compared with SP1003-02HTG and SMAJ22A, the TDS2211P uniquely combines 22V working voltage, 28V clamping stability across temperature and current, and ultra-compact DFN packaging - making it the only option qualified for high-reliability USB PD and industrial load switch protection where voltage margin and thermal derating are design-critical.

Availability

TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT device power rails requiring stable component supply, long-lifecycle availability, and guaranteed RoHS/WEEE compliance.

Supply support for TDS2211P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, protection, sensing, and connectivity.

The TDS2211P belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS protection applications where stable clamping, temperature resilience, and space efficiency are mandatory.

FAQ

What is the maximum operating temperature range for the TDS2211P?

The TDS2211P operates reliably from −40°C to +125°C ambient temperature. Its clamping voltage remains stable within 27.5–28V across this full range, unlike standard TVS diodes whose clamping increases with temperature. This makes the TDS2211P especially suitable for industrial and automotive-adjacent applications where thermal margins are tight and consistent protection is required.

How does the TDS2211P differ from a standard TVS diode in surge response?

The TDS2211P uses a precision-triggered FET shunt instead of a pn-junction avalanche structure. This results in near-constant clamping voltage (27.5–28V) across 1–40A and −40°C to +125°C, whereas a standard TVS exhibits linear V_C = V_BR + I_PP×R_DYN rise. The TDS2211P's 20mΩ dynamic resistance and FET-based conduction enable superior energy handling without thermal runaway - a key distinction confirmed in Semtech's comparative clamping curves.

Can the TDS2211P be used on USB SuperSpeed differential pairs?

No - the TDS2211P is not intended for USB SuperSpeed (TX/RX) or DisplayPort lines due to its 175pF junction capacitance, which would degrade signal integrity. Semtech explicitly recommends low-capacitance devices like RClamp3371ZC (<0.25pF) for those lines. The TDS2211P is specified only for single-ended, high-voltage rails such as USB PD V_BUS, load switch inputs, and 22V power buses.

What is the recommended PCB layout for optimal performance of the TDS2211P?

Place the TDS2211P as close as possible to the protected connector. Connect all three IN pins (4–6) via a single short, wide trace to the protected line, and tie all three GND pins (1–3) directly to a solid ground plane using multiple vias. Avoid thermal pads - energy is dissipated internally. This layout minimizes parasitic inductance and ensures full 40A surge capability, as validated in Semtech's layout guidelines and Figure 7 of the datasheet.

Is the TDS2211P RoHS and halogen-free compliant?

Yes - the TDS2211P is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is lead-free. Compliance is documented in the "Mechanical Characteristics" section of the official Semtech datasheet (Rev 2.5, Nov 2021), and the part is supplied in tape-and-reel packaging with marking code "T22" followed by date code.