What are the key specifications of the US1M?

Key specs include a 1000V peak reverse voltage, 1A forward current, 1.7V forward voltage drop, and a 75ns reverse recovery time.

What should engineers review before using the US1M?

Engineers should review the thermal resistance (RθJA = 55°C/W) and ensure the PCB layout provides adequate copper area for heat dissipation.

What is the US1M used for?

It is commonly used in high-efficiency power supplies, DC-DC converters, and general-purpose rectification where fast switching is required.

What are the sourcing risks for the US1M?

The US1M is an active, widely available component with high stock levels, presenting low sourcing risk for standard production.

What is the pinout of US1M?

Use the US1M datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about US1M pinout to locate pins, power rails, and interface signals before layout.

US1M Datasheet, Specs, Alternatives & ECAD | Microdiode Semiconductor (Shenzhen) Co., Ltd.

AI summary

The US1M is a 1000V, 1A ultra-fast rectifier diode in an SMA package, suitable for high-efficiency power conversion and switching applications.

Best for

High-efficiency power supplies
Switching regulators
General purpose rectification

Avoid if

Applications requiring extremely low forward voltage drop (Schottky diodes may be better)
High-current applications exceeding 1A

Check before use

Thermal dissipation requirements
Reverse recovery time for high-frequency switching

Key specifications

VRRM: 1000 V
IF(AV): 1 A
trr: 75 ns
Package: DO-214AC (SMA)

Compliance & Environment

RoHS: RoHS Compliant
REACH: REACH Unaffected
MSL: 1 (Unlimited)
ECCN: EAR99
HTSUS: 8542.39.0001

Application

Power SuppliesIndustrial Control

Datasheet

b9555037eae3f6836d46f19c6f799c50_1809212041_DIYI-Elec-Tech-US1M_C84178.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for US1M: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol

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PCB Footprint

Land pattern for PCB layout

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3D Model

STEP file for mechanical design

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Where to Buy

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Alternative components

Part	Details	Match
US2MMDD	Offers double the forward current (2A) in the same package with identical voltage and recovery speed.	Needs validation

Design and risk insights

Questions & answers

The US1M is an ultra-fast recovery rectifier diode designed for surface-mount applications, capable of handling up to 1000V and 1A.

RS1MMDD	Matches package, voltage, and current, but has a significantly slower recovery time (500ns vs 75ns).	Needs validation
M7MDD	Common standard recovery diode (1N4007 equivalent) in the same SMA package. Not a functional speed match.	Needs validation

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the US1M?+×

What are the key specifications of the US1M?+×

What should engineers review before using the US1M?+×

What is the US1M used for?+×

What are the sourcing risks for the US1M?+×

What is the pinout of US1M?+×