Semtech Corporation JANTX1N5619.TR

Overview

JANTX1N5619.TR 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, and 20mΩ dynamic resistance. It protects USB PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.

For engineers reviewing the JANTX1N5619.TR datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance, DFN-6 package layout constraints, and compatibility with 22V bus protection in USB Type-C and industrial power interfaces.

Technical Context

The JANTX1N5619.TR 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 and across −40°C to +125°C due to decreasing R_DS(on) under surge.

It operates with three input terminals (pins 4–6) tied together to the protected line and three ground terminals (pins 1–3), requiring all six pins to be connected for full 40A rating. Its 175pF junction capacitance at 22V/1MHz and 130–600nA leakage at VRWM make it suitable for moderate-speed power-line protection-not high-frequency signal lines.

Key Specifications

Pinout & Package

Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound. Exposed thermal pad not required; energy dissipated in silicon FET.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TDS2211P.C, JANTX1N5619.TR adds military-grade screening and traceability but shares identical protection performance; versus SMAJ22A, JANTX1N5619.TR delivers 8V lower clamping, 3.3× higher IPP, and stable voltage across temperature-enabling smaller safety margins and broader environmental deployment.

Availability

JANTX1N5619.TR is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and IoT device power rails requiring stable component supply with MIL-PRF-19500 compliance and extended temperature validation.

Supply support for JANTX1N5619.TR 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 semiconductors for power management, protection, and signal integrity.

JANTX1N5619.TR belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power-line protection where clamping stability, surge robustness, and temperature insensitivity are critical.

FAQ

What is the primary protection function of the JANTX1N5619.TR?

The JANTX1N5619.TR functions as a transient diverting suppressor that actively shunts high-energy electrical overstress (EOS) events-including ESD, EFT, and lightning surges-to ground using a precision-triggered FET. Unlike passive TVS diodes, JANTX1N5619.TR maintains a near-constant 27.5–28V clamping voltage across its full 40A surge rating and entire −40°C to +125°C operating range, making it ideal for protecting sensitive 24V-rated ICs in demanding environments.

How does the JANTX1N5619.TR differ from standard TVS diodes like SMAJ22A?

JANTX1N5619.TR differs fundamentally: it uses a triggered FET architecture instead of a pn-junction, resulting in 20mΩ dynamic resistance and flat clamping (27.5–28V at 40A), whereas SMAJ22A exhibits rising clamping (35.5V at 12.3A) due to fixed RDYN. JANTX1N5619.TR also delivers 1120W peak power vs. SMAJ22A's 200W, supports ±30kV ESD (vs. ~15–20kV), and holds clamping stable across temperature-key advantages validated in Semtech's TDS2211P datasheet.

What are the PCB layout requirements for optimal performance of the JANTX1N5619.TR?

For optimal JANTX1N5619.TR performance, connect all three IN pins (4–6) via a single short, wide trace to the protected line-and all three GND pins (1–3) to a solid ground plane using multiple low-inductance vias. Place JANTX1N5619.TR within 5mm of the connector entry point to minimize parasitic inductance. Avoid thermal pads; the device dissipates energy internally. Layout deviations reduce effective IPP and increase clamping voltage under surge.

Is the JANTX1N5619.TR suitable for protecting high-speed data lines such as USB SuperSpeed or PCIe?

No, the JANTX1N5619.TR is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V is optimized for power-rail and moderate-speed control-line protection-not signal integrity-critical paths. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF). JANTX1N5619.TR is intended exclusively for 22V VBus, load switch inputs, and other DC/low-frequency power interfaces.

Does the JANTX1N5619.TR require external biasing or control signals to operate?

No, the JANTX1N5619.TR is fully autonomous and requires no external bias, enable signals, or configuration. It operates passively: the integrated trigger circuit senses overvoltage on the IN-to-GND path and activates the internal shunt FET within nanoseconds. All six pins are either IN (4–6) or GND (1–3); no additional components or connections are needed for basic protection functionality. JANTX1N5619.TR is a true "install-and-protect" solution.