Semtech Corporation SC5014MLTRT

Overview

SC5014MLTRT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range. It protects USB Type-C power delivery buses and load switch inputs in industrial and IoT equipment.

For engineers reviewing the SC5014MLTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over 40A surge current, low 20mΩ dynamic resistance, 175pF junction capacitance at 22V, DFN 1.6×1.6mm package constraints, and compatibility with 22V working voltage systems requiring robust EOS hardening.

Technical Context

The SC5014MLTRT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing R_DS(on) under surge-enabling predictable protection at 27.5–28V up to 40A.

It operates across –40°C to +125°C with <600nA reverse leakage at 22V and maintains stable 25–27.9V breakdown voltage. Its functional architecture separates input (pins 4–6) and ground (pins 1–3) terminals to minimize parasitic inductance, supporting high-speed transient diversion without thermal pad dependency.

Key Specifications

Pinout & Package

SC5014MLTRT is housed in a Pb-free, RoHS-compliant DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with exposed thermal pad not required. All pins must be soldered: pins 1–3 serve exclusively as GND return paths, pins 4–6 form a parallel input node for the protected line.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TDS2211P (identical device) and SMAJ22A (conventional TVS), SC5014MLTRT delivers guaranteed 27.5–28V clamping at full 40A and 125°C-enabling robust, temperature-insensitive protection where SMAJ22A's voltage drift would risk downstream IC damage.

Availability

SC5014MLTRT is available at Aetrix Electronics and suitable for USB Type-C power delivery interfaces, industrial load switch inputs, and 22V IoT power rail applications requiring stable component supply and long-term lifecycle support.

Supply support for SC5014MLTRT 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 analog and mixed-signal ICs for precision protection, sensing, and signal integrity.

SC5014MLTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications demanding stable clamping, wide temperature operation, and compact footprint.

FAQ

What is the exact function of SC5014MLTRT in a circuit?

SC5014MLTRT functions as a transient diverting suppressor that shunts high-energy electrical overstress (EOS) events-such as ESD, lightning surges, and EFT-to ground. It uses a precision-triggered FET to clamp the protected 22V line at 27.5–28V, regardless of surge magnitude up to 40A or temperature from –40°C to +125°C. This behavior makes SC5014MLTRT distinct from standard TVS diodes and critical for protecting sensitive USB PD controllers and load switches.

Is SC5014MLTRT pin-compatible with other Semtech TDS devices?

No-SC5014MLTRT is specifically configured for single-line 22V protection in a 6-pin DFN with dedicated GND (pins 1–3) and input (pins 4–6) groups. Other Semtech TDS variants like TDS3301P (33V) or TDS1201P (12V) share the same package and pinout, but SC5014MLTRT is not interchangeable with multi-line or different-voltage TDS parts without redesign. Always verify voltage rating and surge rating alignment before substitution.

Does SC5014MLTRT require a thermal pad or heatsink?

No-SC5014MLTRT does not require a thermal pad or external heatsink. Its FET-based architecture dissipates surge energy efficiently with low dynamic resistance (20mΩ), and the DFN package is rated for full 40A surge performance without thermal enhancement. The datasheet explicitly states "no thermal pad is needed," and layout guidelines emphasize low-inductance grounding instead of thermal conduction.

Can SC5014MLTRT be used on data lines like USB SuperSpeed or DisplayPort?

No-SC5014MLTRT is intended only for power or low-frequency I/O lines (e.g., VBUS, CC, SBU, load switch inputs) due to its 175pF junction capacitance. For high-speed differential data lines such as USB SuperSpeed (TX/RX) or DisplayPort, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF). Using SC5014MLTRT on such lines would severely degrade signal integrity.

What is the marking code and packaging format for SC5014MLTRT?

SC5014MLTRT is marked with "T22" followed by a two-digit date code (e.g., T2223) and supplied in tape-and-reel format with 3,000 units per 7-inch reel. The dot on the package indicates pin 1 location. This marking and packaging align with Semtech's standard for TDS2211P, confirming SC5014MLTRT as a valid orderable variant of the same device.