Semtech Corporation ECLAMP8052PQTCT

Overview

ECLAMP8052PQTCT from Semtech is a transient diverting suppressor designed for high-energy EOS protection of single 22V I/O or power 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 175pF junction capacitance in a DFN 1.6×1.6×0.55mm 6-lead package.

For engineers reviewing the ECLAMP8052PQTCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for minimal voltage overshoot, compact DFN footprint for space-constrained USB Type-C and industrial load switch inputs, and compatibility with 22V bus systems requiring robust EOS protection without thermal derating penalties.

Technical Context

ECLAMP8052PQTCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V-from 24A to 40A peak pulse current due to decreasing R_DS(on) under surge conditions.

The device operates over –40°C to +125°C, maintains stable clamping across temperature (±0.1V variation), and delivers 1120W peak pulse power. Its 175pF capacitance at 22V/1MHz and 130–600nA reverse leakage support high-speed interface protection where signal integrity and low standby power are critical.

Key Specifications

Pinout & Package

Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS/WEEE compliant, 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, ECLAMP8052PQTCT shares identical performance and footprint but may differ in tape-and-reel packaging or date-code labeling conventions; versus uClamp2411ZA, it delivers 67% higher surge current capacity and 15× higher capacitance - making it suitable for power rail, not signal line, protection.

Availability

ECLAMP8052PQTCT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V IoT power bus designs requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for ECLAMP8052PQTCT 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.

ECLAMP8052PQTCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection with superior clamping stability and thermal resilience.

FAQ

What is the maximum continuous operating voltage for ECLAMP8052PQTCT?

ECLAMP8052PQTCT has a reverse stand-off voltage (V_RWM) of 22V, meaning it can continuously block up to 22V DC or RMS without significant leakage or degradation. This makes it suitable for nominal 20V USB PD VBUS and 22V industrial power rails. Exceeding 22V risks premature conduction and accelerated wear. The device's 25–27.9V breakdown voltage (V_BR) provides margin above V_RWM, and ECLAMP8052PQTCT is rated for operation from –40°C to +125°C at this voltage level.

How does ECLAMP8052PQTCT achieve stable clamping across temperature and current?

ECLAMP8052PQTCT uses a surge-rated FET as its main protection element, triggered by an internal precision circuit. As surge current increases, the FET's R_DS(on) decreases, counteracting voltage rise and maintaining clamping near 27.5–28V from 24A to 40A and –40°C to +125°C. This behavior contrasts with TVS diodes, whose clamping rises linearly with current and temperature. ECLAMP8052PQTCT's dynamic resistance is specified at 20mΩ, confirming its low-voltage-drop shunt architecture.

Can ECLAMP8052PQTCT be used to protect USB Type-C superspeed differential pairs?

No, ECLAMP8052PQTCT is not suitable for USB Type-C superspeed (TX/RX) lines. Its 175pF junction capacitance would severely degrade signal integrity at multi-Gbps data rates. Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) for those lines. ECLAMP8052PQTCT is specifically intended for VBUS and other high-current, high-voltage lines such as load switch inputs, where its 40A surge rating and 22V working voltage provide optimal protection without compromising power delivery.

What is the recommended PCB layout for ECLAMP8052PQTCT?

Place ECLAMP8052PQTCT as close as possible to the protected connector. Connect all three IN pins (4,5,6) via a single short, wide trace to minimize inductance; likewise, tie all three GND pins (1,2,3) directly to a solid ground plane using multiple vias. Avoid thermal pads - energy is dissipated in the FET channel, not the junction. Follow Semtech's land pattern for DFN 1.6×1.6mm (0.55mm height) and ensure no copper under the center pad unless explicitly called out in the datasheet. This layout maximizes ECLAMP8052PQTCT's 40A surge capability and ESD robustness.

Is ECLAMP8052PQTCT RoHS and halogen-free compliant?

Yes, ECLAMP8052PQTCT 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. These compliance attributes are confirmed in Semtech's official datasheet Rev 2.5 and supported by material declarations available through Semtech's quality portal. ECLAMP8052PQTCT is suitable for global commercial and industrial deployments requiring strict environmental regulatory adherence.