US1MHM3_A/I Equivalent & Substitute Parts Reference

Part Overview

The Vishay General Semiconductor US1MHM3_A/I is a surface-mount, fast-recovery general-purpose diode, rated at 1000 V reverse voltage and 1 A average rectified current in a DO-214AC (SMA) package. This diode is AEC-Q101 qualified for automotive use and is RoHS3 compliant. With an active product status, engineers may seek equivalent or substitute diodes to ensure supply chain continuity, multi-sourcing, or inventory optimization, especially in high-reliability and automotive applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	US1MHM3_A/I
Category	Diodes, Rectifiers
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Voltage - DC Reverse (Vr) (Max)	1000 V
Current - Average Rectified (Io)	1A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 1 A
Reverse Recovery Time (trr)	75 ns
Current - Reverse Leakage @ Vr	10 µA @ 1000 V
Capacitance @ Vr, F	10pF @ 4V, 1MHz
Operating Temperature - Junction	-55°C ~ 150°C
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute and equivalent diodes for US1MHM3_A/I are selected based on strict parametric match within the following key parameters: package/case compatibility (DO-214AC, SMA), mounting type (Surface Mount), maximum DC reverse voltage (1000 V), average rectified current (1A), forward voltage drop at rated current (≤1.7 V @ 1 A), reverse recovery time (≤75 ns), reverse leakage current (≤10 µA @ 1000 V), capacitance (reference value where provided), operating temperature range (-55°C ~ 150°C), and compliance with automotive grade and AEC-Q101 qualification, where available. Only parts that strictly meet or exceed these parameters are listed as parametric equivalents or substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Capacitance @ Vr, F	Mounting Type	Package / Case	Operating Temperature - Junction	Grade	Qualification	RoHS Status
US1MHM3_A/I	Vishay	1000 V	1A	1.7 V @ 1 A	75 ns	10 µA @ 1000 V	10pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	Automotive	AEC-Q101	ROHS3 Compliant
US1M-E3/5AT	Vishay	1000 V	1A	1.7 V @ 1 A	75 ns	10 µA @ 1000 V	10pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant
US1M-E3/61T	Vishay	1000 V	1A	1.7 V @ 1 A	75 ns	10 µA @ 1000 V	10pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant
US1M-M3/5AT	Vishay	1000 V	1A	1.7 V @ 1 A	-	10 µA @ 1000 V	-	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant
US1M-M3/61T	Vishay	1000 V	1A	1.7 V @ 1 A	75 ns	10 µA @ 1000 V	10pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant
US1MHE3_A/H	Vishay	1000 V	1A	1.7 V @ 1 A	75 ns	10 µA @ 1000 V	10pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	Automotive	AEC-Q101	ROHS3 Compliant
US1MHE3_A/I	Vishay	1000 V	1A	1.7 V @ 1 A	75 ns	10 µA @ 1000 V	10pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	Automotive	AEC-Q101	ROHS3 Compliant
ES1M	SMC Diode Solutions	1000 V	1A	1.7 V @ 1 A	75 ns	5 µA @ 1000 V	45pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant
US1M	EVVO Semi	1000 V	1A	1.65 V @ 1 A	75 ns	5 µA @ 1 kV	-	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant
US1M R3G	Taiwan Semiconductor	1000 V	1A	1.7 V @ 1 A	75 ns	5 µA @ 1000 V	10pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant
US1M_R1_00001	Panjit International Inc.	1000 V	1A	1.7 V @ 1 A	100 ns	1 µA @ 1000 V	17pF @ 4V, 1MHz	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	-	-	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring automotive grade and AEC-Q101 qualification, select only those substitute parts where these attributes are explicitly provided (such as US1MHE3_A/H and US1MHE3_A/I). For other standard applications, all listed parts with active status and ROHS3 compliance may be used. Confirm the product status is "Active" when making selections, except where discontinued status is explicitly noted. Only select parts with identical mounting style and package (DO-214AC, SMA) per the requirements.

Frequently Asked Questions (FAQ)

Q1: What key parameters must be matched for substituting US1MHM3_A/I?
A1: Substitute diodes must match the package (DO-214AC, SMA), surface-mount type, voltage rating (1000 V), current rating (1A), forward voltage at rated current (≤1.7 V @ 1 A), reverse recovery time (≤75 ns), and reverse leakage at test voltage.

Q2: Are all listed equivalent diodes automotive qualified?
A2: Only those parts where automotive grade and AEC-Q101 qualification are specified, such as US1MHE3_A/H and US1MHE3_A/I, are automotive qualified. Refer to the "Grade" and "Qualification" columns in the comparison table.

Q3: Is it acceptable to use parts from other manufacturers as substitutes?
A3: Substitute parts from other manufacturers are included only if all electrical and mechanical parameters are explicitly matched as per the provided specifications.

Q4: What packaging style is compatible?
A4: All listed substitute diodes must use the DO-214AC (SMA) surface-mount package for direct PCB footprint compatibility.

Q5: Does RoHS3 compliance affect substitute selection?
A5: ROHS3 compliance is provided for all parts in the list and should be maintained to ensure regulatory conformity.

Q6: Are reverse recovery time and leakage current matched in all equivalents?
A6: Substitute diodes with minor differences in reverse recovery time and leakage current values are included only when strictly within the allowed parameters or less than the main part.

Q7: Is there cross-series compatibility in this category?
A7: Only parts with parametric equivalence within the US1M or equivalent product families and identical form factors are presented for substitution.

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