RF201LAM4STFTR Equivalent & Substitute Parts Reference

Part Overview

The Rohm Semiconductor RF201LAM4STFTR is a surface mount, general purpose, fast recovery rectifier diode rated for 400 V reverse voltage and 1.5 A average rectified current. It is designed for automotive and other high-reliability applications, meeting AEC-Q101 qualification. The main reasons to seek alternative or substitute models include supply chain constraints, inventory optimization, or the need for multiple sourcing strategies while maintaining identical electrical and mechanical performance and compliance standards.

Key Parameters

Parameter	Value
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	400 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1.5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	30 ns
Current - Reverse Leakage @ Vr	1 µA @ 400 V
Grade	Automotive
Qualification	AEC-Q101
Mounting Type	Surface Mount
Package / Case	SOD-128
Supplier Device Package	PMDTM
Operating Temperature - Junction	150°C (Max)
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for RF201LAM4STFTR are selected based solely on matching the following critical electrical, mechanical, and compliance parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1.5 A
Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 1.5 A
Speed: Fast Recovery (≤ 500ns, > 200mA)
Reverse Recovery Time (trr): 30 ns
Current - Reverse Leakage @ Vr: 1 µA @ 400 V
Grade: Automotive (where specified)
Qualification: AEC-Q101 (where specified)
Mounting Type: Surface Mount
Package / Case: SOD-128
Supplier Device Package: PMDTM
Operating Temperature - Junction: 150°C (Max)
RoHS/REACH compliance and MSL criteria

Only parts which strictly conform to these values are considered equivalent substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Category	Packaging	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Grade	Qualification	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	MSL	REACH Status
RF201LAM4STFTR	Rohm Semiconductor	Diodes, Rectifiers	Cut Tape (CT) & Digi-Reel®	400 V	1.5 A	1.2 V @ 1.5 A	Fast Recovery ≤500ns, >200mA	30 ns	1 µA @ 400 V	Automotive	AEC-Q101	Surface Mount	SOD-128	PMDTM	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
RF201LAM4STR	Rohm Semiconductor	Diodes, Rectifiers	Cut Tape (CT) & Digi-Reel®	400 V	1.5 A	1.2 V @ 1.5 A	Fast Recovery ≤500ns, >200mA	30 ns	1 µA @ 400 V			Surface Mount	SOD-128	PMDTM	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
RFN2LAM4STFTR	Rohm Semiconductor	Diodes, Rectifiers	Cut Tape (CT) & Digi-Reel®	400 V	1.5 A	1.2 V @ 1.5 A	Fast Recovery ≤500ns, >200mA	30 ns	1 µA @ 400 V	Automotive	AEC-Q101	Surface Mount	SOD-128	PMDTM	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
RFN2LAM4STR	Rohm Semiconductor	Diodes, Rectifiers	Cut Tape (CT) & Digi-Reel®	400 V	1.5 A	1.2 V @ 1.5 A	Fast Recovery ≤500ns, >200mA	30 ns	1 µA @ 400 V			Surface Mount	SOD-128	PMDTM	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected

Engineering Selection Recommendations

Selection among RF201LAM4STFTR, RF201LAM4STR, RFN2LAM4STFTR, and RFN2LAM4STR should be based on product status (active), RoHS and REACH compliance, and specified qualification such as AEC-Q101 and automotive grade if required by application rules. All listed parts are stated as active and ROHS3 Compliant, with MSL 1 (Unlimited), and REACH Unaffected, matching environmental and reliability criteria. Grade and qualification fields should be matched if the application requires automotive compliance.

Frequently Asked Questions (FAQ)

Q: What parameters must match when selecting an equivalent or substitute rectifier diode for RF201LAM4STFTR?
A: Voltage - DC Reverse (Vr) (Max), Current - Average Rectified (Io), Voltage - Forward (Vf) (Max) at rated current, reverse recovery time, reverse leakage current, mounting type, package/case, qualification, and compliance statuses must be identical.

Q: Are all the listed substitutes physically compatible with RF201LAM4STFTR?
A: All substitutes are specified with the same mounting type (Surface Mount), package/case (SOD-128), and supplier device package (PMDTM).

Q: Do the substitutes offer the same environmental and reliability standards?
A: All substitutes are ROHS3 Compliant, have REACH Unaffected status, and MSL 1 (Unlimited). AEC-Q101 qualification and automotive grade status are present where indicated.

Q: How should I select between substitutes differing only in part number suffixes?
A: Choose based on availability, and confirm that required grade (Automotive) and AEC-Q101 qualification match application requirements.

Q: Are there differences in electrical or thermal performance among the substitutes?
A: All listed substitutes have identical ratings for Vr, Io, Vf, trr, and reverse leakage current as provided in the supplied parameters.

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