RF201L4STE25 Equivalent & Substitute Parts Reference

Part Overview

The RF201L4STE25, manufactured by Rohm Semiconductor, is a general-purpose rectifier diode rated for 400 V and 1.5A average rectified current. It is designed for surface-mount applications in the DO-214AC, SMA (PMDS) package. As noted, its product status is "Not For New Designs," necessitating the evaluation of alternative models with equivalent electrical and mechanical specifications to ensure continued design support and replacement in existing assemblies.

Key Parameters

Parameter	RF201L4STE25 Value
Manufacturer	Rohm Semiconductor
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	400 V
Current - Average Rectified (Io)	1.5A
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
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Supplier Device Package	PMDS
Operating Temperature - Junction	150°C (Max)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution is determined by strict equivalence in the following key categories:

Maximum DC Reverse Voltage (Vr)
Average Rectified Current (Io)
Forward Voltage (Vf) at specified current
Reverse Recovery Time (trr)
Reverse Leakage Current at Vr
Mounting type and package compatibility (DO-214AC, SMA)
Compliance certifications (RoHS, REACH, MSL)

Parts are grouped as parametric equivalents (direct match on key values) and similar substitutes (close values for key parameters within the product category and package type).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Operating Temperature - Junction	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status
RF201L4STE25	Rohm Semiconductor	400 V	1.5A	1.2 V @ 1.5 A	Fast Recovery =< 500ns, > 200mA (Io)	30 ns	1 µA @ 400 V	Surface Mount	DO-214AC, SMA	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
RFN2L4STE25	Rohm Semiconductor	400 V	1.5A	1.2 V @ 1.5 A	Fast Recovery =< 500ns, > 200mA (Io)	30 ns	1 µA @ 400 V	Surface Mount	DO-214AC, SMA	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
ES2G-LTP	Micro Commercial Co	400 V	2A	1.25 V @ 2 A	Fast Recovery =< 500ns, > 200mA (Io)	35 ns	5 µA @ 400 V	Surface Mount	DO-214AC, SMA	-65°C ~ 175°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
S2GA R3G	Taiwan Semiconductor Corporation	400 V	1.5A	1.1 V @ 1.5 A	Standard Recovery >500ns, > 200mA (Io)	1.5 µs	5 µA @ 400 V	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
RS2GA-13-F	Diodes Incorporated	400 V	1.5A	1.3 V @ 1.5 A	Fast Recovery =< 500ns, > 200mA (Io)	150 ns	5 µA @ 400 V	Surface Mount	DO-214AC, SMA	-65°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
S2GA-13-F	Diodes Incorporated	400 V	1.5A	1.15 V @ 1.5 A	Standard Recovery >500ns, > 200mA (Io)	N/A	5 µA @ 400 V	Surface Mount	DO-214AC, SMA	-65°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
US1GHE3_A/H	Vishay General Semiconductor	400 V	1A	1 V @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	50 ns	10 µA @ 400 V	Surface Mount	DO-214AC, SMA	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected

Engineering Selection Recommendations

Substitute selection must be based on:

Product status: The main part, RF201L4STE25, is not for new designs; selected substitutes include active parts.
Compliance: All listed alternatives conform to ROHS3 and REACH standards with a moisture sensitivity level of 1 (Unlimited).
Certification alignment: Supplier device package and mounting type are matched (DO-214AC, SMA, Surface Mount).
For direct replacements, parametric equivalence must be observed as shown in the table above.

Frequently Asked Questions (FAQ)

Q: What are the essential parameters for substituting a rectifier diode such as RF201L4STE25?
A: Substitution requires matching maximum DC reverse voltage, average rectified current, forward voltage at current, reverse recovery time, reverse leakage at voltage, mounting type, and package compatibility.

Q: Does package style matter when swapping diodes in surface-mount assemblies?
A: Yes, for circuit board compatibility and mechanical fit, only parts in the DO-214AC, SMA package should be considered equivalent substitutes.

Q: Can I use a diode rated for higher current or voltage than the original component?
A: Substitution is allowed as long as the substitute’s ratings meet or exceed the requirements outlined for the original part and comply with package and mounting type.

Q: Are all alternatives listed RoHS and REACH compliant?
A: Based on supplied parameters, all alternatives are RoHS3 compliant and REACH unaffected with the same moisture sensitivity level.

Q: Can discontinued or not-for-new-design parts be used for new projects?
A: Only parts listed as "Active" should be used for new designs; discontinued or not-for-new-design parts are suitable for maintenance or legacy assemblies.

Q: Are the forward voltage and reverse recovery time critical for fast-switching applications?
A: The forward voltage and reverse recovery time must be evaluated for circuit performance; the table provides these parameters for direct comparison among substitutes.

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