Semtech Corporation GS6151-INE3

Overview

GS6151-INE3 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 a stable 27.6–28V clamping voltage across full temperature range (−40°C to +125°C). It is used in USB Type-C PD input protection where low, temperature-invariant clamping prevents damage to downstream controllers.

For engineers reviewing the GS6151-INE3 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge current and temperature, dynamic resistance (<20 mΩ), junction capacitance (175 pF), and DFN 1.6×1.6mm 6-lead package compatibility with high-density USB PD layouts.

Technical Context

The GS6151-INE3 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.6–28V at 40A-due to decreasing R_DS(on) under surge, not fixed dynamic resistance.

It operates across −40°C to +125°C with <600 nA reverse leakage at 22V and integrates three parallel input terminals (Pins 4–6) and three ground terminals (Pins 1–3) to maximize surge current handling and minimize parasitic inductance in PCB layout.

Key Specifications

Pinout & Package

GS6151-INE3 is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with six leads and UL 94V-0 molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TDS2211P.C (identical performance, alternate ordering code) and uClamp2411ZA (lower surge rating, smaller voltage margin), GS6151-INE3 provides the only combination of 40A surge handling, 22V working voltage, and stable 28V clamping in a 1.6 mm² footprint - making it uniquely suited for space-constrained, high-reliability 22V power rail protection.

Availability

GS6151-INE3 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, consistent lead-time visibility, and long-term lifecycle support.

Supply support for GS6151-INE3 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 sensing, protection, and signal integrity.

GS6151-INE3 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–24V power rail protection where clamping stability across temperature and current is critical.

FAQ

What is the primary protection function of the GS6151-INE3?

The GS6151-INE3 functions as a Transient Diverting Suppressor that actively shunts high-energy EOS events-including 40A surges (8/20μs) and ±30kV ESD-to ground using a triggered FET architecture. Unlike passive TVS diodes, GS6151-INE3 maintains a near-constant clamping voltage of 27.6–28V across its full operating temperature and current range, making it ideal for protecting sensitive 22V-rated power rails in USB PD and industrial systems.

Does the GS6151-INE3 require external bias or control signals to operate?

No, the GS6151-INE3 is fully autonomous and requires no external bias, enable signals, or configuration. Its internal precision trigger circuit activates the shunt FET automatically when input voltage exceeds the breakdown threshold (~25–27.9V), initiating clamping within nanoseconds. This self-contained operation makes GS6151-INE3 suitable for always-on protection in unattended equipment such as IoT gateways and remote meters.

Can GS6151-INE3 be used on high-speed data lines like USB SuperSpeed or PCIe?

No, GS6151-INE3 is not suitable for high-speed data lines. Its 175 pF junction capacitance at 22V would severely degrade signal integrity on differential pairs operating above ~100 Mbps. It is specifically designed for DC power rails and low-frequency I/O lines. For USB SS, DP/DM, or CC lines, Semtech recommends low-capacitance alternatives like RClamp3371ZC (0.25 pF) or uClamp2411ZA (130 pF), not GS6151-INE3.

How does the GS6151-INE3 compare to standard TVS diodes in terms of thermal performance?

GS6151-INE3 exhibits superior thermal stability: its clamping voltage remains ~27.6 V from −40°C to +125°C, whereas conventional TVS diodes show significant voltage rise with temperature due to fixed dynamic resistance. Additionally, GS6151-INE3 dissipates surge energy primarily in its low-R_DS(on) FET channel rather than a PN junction, reducing thermal stress and enabling repeatable surge endurance - a key advantage in industrial environments where ambient temperatures exceed 85°C.

What PCB layout practices are essential for optimal GS6151-INE3 performance?

To achieve rated 40A surge capability, all three GND pins (1–3) and all three IN pins (4–6) must be connected with short, wide copper traces and multiple vias to an internal ground plane. GS6151-INE3 must be placed within 3 mm of the protected connector, with no stubs or branches on the protected line. Avoid thermal relief on GND pads - solid copper connections are mandatory to minimize inductance and ensure fast, low-impedance transient diversion during ESD or surge events.