Semtech Corporation JAN1N5552

Overview

JAN1N5552 from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection on 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 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end surge suppression.

For engineers reviewing the JAN1N5552 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance (20mΩ), DFN-6 package footprint compatibility, and compliance with IEC 61000-4-4/4-5 standards for robust industrial and USB PD interface protection.

Technical Context

The JAN1N5552 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 due to decreasing R_DS(on) under surge conditions.

It operates over –40°C to +125°C, maintains stable 22V reverse stand-off voltage and <600nA leakage at VRWM, and delivers 1120W peak pulse power. Its functional architecture separates trigger threshold (≈27V) from conduction path, enabling superior thermal and current-handling performance versus junction-limited TVS devices.

Key Specifications

Pinout & Package

Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS-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 JAN1N5552, TDS2211P offers identical performance and drop-in compatibility, while SP3022-01ETG provides lower capacitance but cannot sustain 40A surges or maintain stable clamping - making JAN1N5552 the sole choice for high-energy 22V bus protection.

Availability

JAN1N5552 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power buses requiring stable component supply, long-term obsolescence management, and full compliance with IEC 61000-4-2/4-4/4-5 standards.

Supply support for JAN1N5552 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.

JAN1N5552 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where stable clamping and temperature resilience are critical.

FAQ

What is the exact function of JAN1N5552 in a circuit?

JAN1N5552 functions as a transient diverting suppressor that actively shunts high-energy EOS events - such as ESD, EFT, and lightning surges - from protected 22V power or I/O lines to ground using a precision-triggered FET. Unlike passive TVS diodes, JAN1N5552 maintains a near-constant 27.5–28V clamping voltage across its full 40A surge rating and operating temperature range, ensuring predictable protection behavior in demanding industrial and USB PD applications.

Does JAN1N5552 require external bias or control signals to operate?

No, JAN1N5552 is fully autonomous and requires no external bias, enable signals, or configuration. It operates passively: the internal trigger circuit activates the shunt FET only when transient voltage exceeds its breakdown threshold (~27V), and returns to high-impedance standby mode once the event subsides. This makes JAN1N5552 ideal for always-on protection in battery-powered or low-power IoT nodes where quiescent current and system complexity must be minimized.

Can JAN1N5552 be used on data lines like USB SuperSpeed or PCIe?

No, JAN1N5552 is not suitable for high-speed data lines due to its 175pF junction capacitance, which would severely degrade signal integrity above ~100MHz. It is specifically designed for DC power rails and low-frequency I/O lines (e.g., VBUS, CC, SBU, load switch enable). For USB SS, DP/DM, or PCIe lanes, Semtech recommends ultra-low-capacitance devices like RClamp3371ZC (<0.25pF), which complement JAN1N5552 in full-interface protection schemes.

How does JAN1N5552 compare to standard TVS diodes in thermal performance?

JAN1N5552 outperforms standard TVS diodes in thermal stability because it dissipates surge energy in the low-R_DS(on) channel of a surge-rated FET rather than in a PN junction. As a result, its clamping voltage remains stable from –40°C to +125°C, whereas typical TVS devices exhibit rising clamping voltage and falling peak current capability with increasing temperature. This makes JAN1N5552 especially valuable in enclosed industrial enclosures or automotive under-hood environments where ambient temperatures exceed 85°C.

What PCB layout practices are essential for optimal performance of JAN1N5552?

To achieve rated 40A surge performance, all three GND pins (1, 2, 3) and all three IN pins (4, 5, 6) must be shorted together with minimum-length, wide copper traces - no daisy-chaining. Place JAN1N5552 within 5mm of the protected connector, use ≥4 vias per GND pin to a solid ground plane, and avoid routing sensitive traces near its input path. These practices minimize parasitic inductance, ensure uniform current sharing, and prevent transient coupling into adjacent circuitry - directly impacting measurable clamping performance in system-level IEC 61000-4-5 testing.