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Analog Devices DS2401Z+ — DC-DC Power Modules

Analog Devices DS2401Z+ Silicon Serial Number, SOT-223-3

MPNDS2401Z+
End of Life

Analog Devices DS2401Z+, Silicon Serial Number IC, Surface Mount, TO-261-4 / TO-261AA, SOT-223-3, Tube, Active.

$3.0Ref. price · indicative, final on quote
PackagingTO-261-4, TO-261AA
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DS2401Z+ specifications
ParameterValue
TypeSilicon Serial Number
MountingSurface Mount
PackageTube
ApplicationsPCB, Network Node, Equipment Identification/Registration
CaseTO-261-4, TO-261AA

Product details

Silicon serial number for board-level identification

The DS2401Z+ is a silicon serial number IC from Analog Devices, packaged in a SOT-223-3 surface-mount package (TO-261-4 / TO-261AA equivalent). It provides a unique, factory-lasered 64-bit registration number that serves as an electronic identifier for PCB assemblies, network nodes, and equipment needing tamper-proof identification or inventory tracking.

The DS2401Z+ uses the SOT-223-3 footprint (also listed as TO-261-4 / TO-261AA), a three-lead surface-mount package with a large thermal pad on the bottom. The pad is not electrically connected to the die, but it provides mechanical stability during reflow. The package is supplied in tube format. The single-wire communication interface (common to the DS2401 family) operates over a single data line plus ground, with the device drawing its parasitic power from the bus. No external power supply is needed at the IC pin — the bus master provides both data and power through the pull-up resistor.

Frequently asked questions

What is the DS2401Z+ used for?

The DS2401Z+ provides a unique 64-bit silicon serial number for PCB identification, network node registration, and equipment authentication. It is typically soldered onto a board and read by a microcontroller over a single-wire bus to verify the board's identity or track its revision.

How to communicate with DS2401Z+?

The DS2401Z+ uses the 1-Wire protocol (single-wire interface) developed by Maxim Integrated (now part of Analog Devices). A single data line carries both power and communication; the bus master must provide a pull-up resistor and follow the 1-Wire timing sequence to read the 64-bit ROM ID. No external power supply is required at the IC.

Is DS2401Z+ compatible with 3.3V logic?

The DS2401 family is designed to operate over a wide supply range (typically 2.8V to 5.25V on the bus). A 3.3V microcontroller can drive the 1-Wire bus directly through a pull-up resistor to 3.3V, and the DS2401Z+ will communicate correctly at that voltage level.