Semtech Corporation GS12182-INTE3Z

Overview

GS12182-INTE3Z from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, 20mΩ dynamic resistance, and DFN 1.6×1.6×0.55mm 6-lead package - deployed in USB Type-C PD bus protection.

For engineers reviewing the GS12182-INTE3Z datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat VC response, DFN board-space efficiency, and compatibility with industrial surge standards (±1kV, 1.2/50μs + 8/20μs).

Technical Context

The GS12182-INTE3Z uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly turns on the shunt path. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A IPP due to decreasing R_DS(on) under surge conditions.

It operates over –40°C to +125°C with stable 27.5–28V clamping at rated current, 175pF junction capacitance at 22V/1MHz, and <600nA reverse leakage at VRWM. The device protects one bidirectional line with 22V working voltage and meets IEC 61000-4-4 (±4kV EFT) and IEC 61000-4-5 (40A/8/20μs, ±1kV/1.2/50μs).

Key Specifications

Pinout & Package

GS12182-INTE3Z is housed in a RoHS-compliant, halogen-free DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All six terminals are surface-mount; pin 1 is marked by laser dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TDS2211P.C (identical spec and form), GS12182-INTE3Z offers identical performance and drop-in compatibility; versus uClamp2411ZA, it provides 3.3× higher surge current, 5.5V lower clamping, and 70% smaller footprint - making it the sole viable option for 22V power rail EOS protection.

Availability

GS12182-INTE3Z is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and guaranteed surge performance consistency across production batches.

Supply support for GS12182-INTE3Z 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 connectivity in industrial, communications, and consumer markets.

The GS12182-INTE3Z belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-voltage, high-surge applications where clamping stability across temperature and current is critical.

FAQ

What is the primary protection function of the GS12182-INTE3Z?

The GS12182-INTE3Z functions as a Transient Diverting Suppressor that shunts high-energy EOS events - including ESD, lightning-induced surges, and EFT - away from sensitive downstream components. It achieves this using a precision-triggered surge-rated FET, delivering stable 27.5–28V clamping at 40A without voltage rise across current or temperature ranges. This makes GS12182-INTE3Z especially effective on 22V power rails like USB-C VBUS.

Does the GS12182-INTE3Z require external bias or control signals?

No, the GS12182-INTE3Z operates autonomously with no external bias, enable pins, or configuration interfaces. Its internal trigger circuit activates the shunt FET when input voltage exceeds the breakdown threshold (~25–27.9V), and the device returns to high-impedance standby mode once the transient subsides. This self-contained operation simplifies design integration and eliminates dependency on system power sequencing - a key advantage of GS12182-INTE3Z in always-on industrial and IoT applications.

How does the GS12182-INTE3Z differ from standard TVS diodes in clamping behavior?

Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the GS12182-INTE3Z maintains near-constant clamping (27.5–28V) from 24A to 40A due to its FET-based architecture and ultra-low 20mΩ dynamic resistance. This eliminates thermal derating concerns at high ambient temperatures - where conventional TVS devices can exceed 35V clamping at 125°C. That flat response is a defining characteristic of GS12182-INTE3Z.

Can the GS12182-INTE3Z be used on bidirectional signal lines such as USB DP/DM?

No - the GS12182-INTE3Z is optimized for unidirectional or bidirectional power rail protection (e.g., VBUS, load switch inputs) with 175pF junction capacitance, which would degrade signal integrity on high-speed differential pairs. For USB SuperSpeed lanes (TX/RX), Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF). GS12182-INTE3Z is specified and validated only for 22V power-line EOS suppression, not data-line applications.

What PCB layout practices maximize surge performance for the GS12182-INTE3Z?

To maximize surge performance, place GS12182-INTE3Z within 2 mm of the protected connector; tie all IN pins (4,5,6) together with a short, wide trace; connect all GND pins (1,2,3) to a solid ground plane using ≥3 thermal vias; avoid stubs or splits in the IN/GND paths; and ensure no other high-speed traces run parallel beneath the device. These practices minimize parasitic inductance - critical for preserving the 27.5–28V clamping window during fast-rising ESD events. GS12182-INTE3Z does not require an exposed thermal pad.