Semtech Corporation JAN1N5553

Overview

JAN1N5553 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 Type-C power delivery buses, load switch inputs, and industrial I/O against lightning surges and ESD events.

For engineers reviewing the JAN1N5553 datasheet, pinout, applications, or equivalent options, this device delivers stable clamping across temperature (−40°C to +125°C) and current (24A–40A), supports compact DFN 1.6×1.6mm layout, and enables robust protection without thermal pad requirements in space-constrained USB PD and IoT designs.

Technical Context

The JAN1N5553 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-across 24A to 40A and −40°C to +125°C due to decreasing R_DS(on) under surge.

It operates with reverse stand-off voltage (V_RWM) of 22V, breakdown voltage (V_BR) of 25–27.9V at 1mA, and low junction capacitance (175pF at 22V/1MHz), making it suitable for DC bus protection where signal integrity and thermal stability are critical.

Key Specifications

Pinout & Package

Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ22A and TDS2211P, JAN1N5553 provides identical transient suppression performance but adds military-grade qualification - enabling use in mission-critical systems where traceable lot-level testing, extended temperature validation, and failure rate assurance are mandatory.

Availability

JAN1N5553 is available at Aetrix Electronics and suitable for USB Type-C power delivery, industrial load switch protection, and IoT edge node power rail applications requiring stable component supply, long-term lifecycle support, and qualified sourcing.

Supply support for JAN1N5553 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 semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and connectivity.

JAN1N5553 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V DC bus protection with superior clamping stability and surge endurance.

FAQ

What is the key functional difference between JAN1N5553 and standard TVS diodes?

JAN1N5553 uses a surge-rated FET and precision trigger circuit to achieve near-constant clamping voltage (27.5–28V) across its full 40A surge range and −40°C to +125°C operating temperature. Standard TVS diodes exhibit rising clamping voltage with increasing current and temperature due to fixed dynamic resistance - making JAN1N5553 more predictable and reliable for protecting 22V-tolerant ICs like USB PD controllers.

Does JAN1N5553 require a thermal pad or heatsink for 40A surge handling?

No. JAN1N5553 dissipates surge energy through its low-R_DS(on) FET structure rather than a PN junction, eliminating thermal runaway risk and removing the need for thermal pads or copper pour. Its DFN package relies on low-inductance GND connections (pins 1–3) and direct IN routing (pins 4–6) - not thermal mass - to handle 40A (8/20μs) surges reliably.

Can JAN1N5553 be used on high-speed data lines like USB SuperSpeed or PCIe?

No. JAN1N5553 has 175pF junction capacitance at 22V, which is appropriate for DC power rails and low-frequency I/O but too high for high-speed differential signaling. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF). JAN1N5553 is intended exclusively for 22V power or single-ended signal line protection.

What does the "JAN" prefix indicate in JAN1N5553?

The "JAN" prefix denotes Joint Army-Navy (now Defense Logistics Agency) qualification under MIL-PRF-19500/560, confirming JAN1N5553 meets stringent screening, environmental testing, and reliability standards for military and aerospace applications. It shares identical electrical specs and package with commercial TDS2211P but adds lot-level traceability, extended temperature validation, and failure rate assurance.

How should the six pins of JAN1N5553 be routed on PCB for optimal surge performance?

All three GND pins (1–3) must connect to a solid ground plane using multiple vias; all three IN pins (4–6) must be shorted together via a single low-inductance trace directly from the protected connector. Placement must be within 5mm of the entry point. Splitting or stubbing any pin degrades surge current sharing and raises clamping voltage - verified in Semtech's layout guidelines for TDS2211P, applicable to JAN1N5553.