RB161SS-20T2R Equivalent & Substitute Parts Reference

Part Overview

The RB161SS-20T2R from Rohm Semiconductor is a surface-mount Schottky diode rated for 20 V reverse voltage and 1 A average rectified current in a KMD2 (0603/1608 Metric) package. As this rectifier is listed as Obsolete, engineering teams may need to identify compatible alternative models for ongoing production, maintenance, or repair to ensure availability and supply chain continuity.

Key Parameters

Manufacturer Part Number	Technology	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	Product Status
RB161SS-20T2R	Schottky	20 V	1A	420 mV @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	1 mA @ 20 V	Surface Mount	0603 (1608 Metric)	KMD2	150°C (Max)	ROHS3 Compliant	Obsolete

Substitute Part Grouping Explanation

Potential substitute parts for RB161SS-20T2R are selected strictly based on matching or exceeding key electrical and mechanical parameters required for this diode category. These parameters include: diode technology, maximum DC reverse voltage, average rectified current, forward voltage at rated current, recovery speed, maximum reverse leakage current, operating temperature, RoHS compliance status, mounting type, and package equivalence. Only parts that meet these defined criteria are included.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Technology	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	Product Status
RB161SS-20T2R	Rohm Semiconductor	Schottky	20 V	1A	420 mV @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	1 mA @ 20 V	Surface Mount	0603 (1608 Metric)	KMD2	150°C (Max)	ROHS3 Compliant	Obsolete
CCS15S30,L3F	Toshiba Semiconductor and Storage	Schottky	20 V	1.5A	400 mV @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	500 µA @ 30 V	Surface Mount	2-SMD, No Lead	CST2C	125°C (Max)	ROHS3 Compliant	Active
RSX101VYM30FHTR	Rohm Semiconductor	Schottky	30 V	1A	470 mV @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	200 µA @ 30 V	Surface Mount	2-SMD, Flat Lead	TUMD2M	150°C (Max)	ROHS3 Compliant	Active
RB061QS-20T18R	Rohm Semiconductor	Standard	20 V	2A	470 mV @ 2 A	Standard Recovery >500ns, > 200mA (Io)	200 µA @ 10 V	Surface Mount	2-SMD, No Lead	SMD1006	150°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

RB161SS-20T2R is designated as Obsolete. The listed substitutes—CCS15S30,L3F; RSX101VYM30FHTR; and RB061QS-20T18R—are all RoHS3 Compliant and currently Active with similar or improved key electrical properties. Substitute selection may be made based on product lifecycle status and required compliance documentation.

Frequently Asked Questions (FAQ)

Q1: What defines a valid electrical substitute for RB161SS-20T2R?
A1: Valid substitutes must match or exceed the critical parameters: Schottky or equivalent technology, ≥20 V maximum reverse voltage, ≥1A average rectified current, comparable or lower forward voltage at rated current, similar or better recovery speed, and compatible reverse leakage current.

Q2: Are package and footprint considerations necessary in selecting a substitute?
A2: Yes, the substitute must have a surface-mount (SMD) package suitable for the intended PCB layout. Package compatibility should be confirmed with mechanical documentation.

Q3: Are the suggested substitutes RoHS compliant?
A3: All listed substitutes are RoHS3 Compliant, as indicated in their respective documentation.

Q4: Can higher reverse voltage or current-rated diodes be used as substitutes?
A4: Higher ratings for reverse voltage or current are acceptable as long as package and performance parameters are compatible.

Q5: How does product status affect selection?
A5: Active status ensures ongoing availability, while Obsolete parts should be phased out from new designs. Selection should favor parts with active status and compliant certifications.

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