RB521CS-30T2R Equivalent & Substitute Parts Reference Page

Part Overview

The RB521CS-30T2R from Rohm Semiconductor is a Schottky diode designed for surface mount applications in the diodes, rectifiers category. It features a maximum DC reverse voltage of 30V, a maximum forward current of 100mA, and a compact VMN2 (SOD-923) footprint. With its product status designated as "Not For New Designs," sourcing alternative models is required for ongoing production, design updates, and lifecycle management. Qualified substitutes must meet equivalent electrical and mechanical specification requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	RB521CS-30T2R
Category	Diodes, Rectifiers
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	100 mA
Voltage - Forward (Vf) (Max) @ If	350 mV @ 10 mA
Current - Reverse Leakage @ Vr	10 µA @ 10 V
Speed	Small Signal =< 200mA (Io), Any Speed
Mounting Type	Surface Mount
Package / Case	2-SMD, Flat Lead
Supplier Device Package	VMN2 (SOD-923)
Operating Temperature - Junction	150°C (Max)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitutability for Schottky diodes in the rectifier category is determined strictly by matching the following key parameters: technology, maximum reverse voltage (Vr), average rectified current (Io), maximum forward voltage (Vf) at specified test current, maximum reverse leakage current, speed classification, mounting type, and package compatibility. Only parts sharing these specific characteristics are considered appropriate equivalents or substitutes for RB521CS-30T2R.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Technology	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Speed	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	Product Status	Grade / Qualification
RB521CS-30T2R	Rohm Semiconductor	Schottky	30 V	100 mA	350 mV @ 10 mA	10 µA @ 10 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	2-SMD, Flat Lead	VMN2 (SOD-923)	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Not For New Designs	-
RB521CM-30T2R	Rohm Semiconductor	Schottky	30 V	100 mA	350 mV @ 10 mA	10 µA @ 10 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	2-SMD, Flat Lead	VMN2M (SOD-923)	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	-
RB521CS-30FHT2RA	Rohm Semiconductor	Schottky	30 V	100 mA	350 mV @ 10 mA	10 µA @ 10 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	2-SMD, Flat Lead	VMN2 (SOD-923)	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	Automotive / AEC-Q101
1SS416,L3M	Toshiba Semiconductor and Storage	Schottky	30 V	100 mA	500 mV @ 100 mA	50 µA @ 30 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	SOD-923	SOD-923	125°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	-
NSR0140P2T5G	onsemi	Schottky	30 V	70 mA	350 mV @ 1 mA	500 nA @ 30 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	SOD-923	SOD-923	-55°C ~ 125°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	-
NSR0230P2T5G	onsemi	Schottky	30 V	200 mA	500 mV @ 200 mA	10 µA @ 10 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	SOD-923	SOD-923	-55°C ~ 125°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	-
PMEG3002AEL,315	Nexperia USA Inc.	Schottky	30 V	200 mA	480 mV @ 200 mA	50 µA @ 30 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	SOD-882	DFN1006-2	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	Automotive / AEC-Q100
RB521CS30L,315	Nexperia USA Inc.	Schottky	30 V	100 mA	350 mV @ 10 mA	10 µA @ 10 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	SOD-882	DFN1006-2	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	Automotive / AEC-Q100
RB521S30,115	Nexperia USA Inc.	Schottky	30 V	200 mA	500 mV @ 200 mA	30 µA @ 10 V	Small Signal =< 200mA (Io), Any Speed	Surface Mount	SC-79, SOD-523	SOD-523	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active	Automotive / AEC-Q100

Engineering Selection Recommendations

Selection of substitute parts for RB521CS-30T2R should be based on the following criteria: compatible product status ("Active" recommended), RoHS3 compliance, unrestricted moisture sensitivity (MSL 1), and REACH unaffected status. Automotive grades and qualification (AEC-Q101 or AEC-Q100) should be selected when specifically required by the application; standard grade parts satisfy general-purpose circuit requirements.

Frequently Asked Questions (FAQ)

Q: What are the most critical parameters when substituting RB521CS-30T2R?
A: The primary substitution criteria are technology (Schottky), maximum reverse voltage (30V), average rectified current (100mA), forward voltage at the specified test current, reverse leakage at specified voltage, speed class, surface mount compatibility, and package type.

Q: Can package variants such as VMN2, VMN2M, SOD-923, SOD-882, DFN1006-2, or SOD-523 be substituted?
A: Substitute devices must match footprint, pad layout, and case dimensions as specified. Functional equivalents exist among VMN2 (SOD-923), VMN2M (SOD-923), SOD-882, DFN1006-2, and SOD-523, but mechanical verification is required based solely on package specification.

Q: Is it necessary to select automotive grade, such as AEC-Q101 or AEC-Q100, for non-automotive designs?
A: Automotive grade is required only when specified by design requirements. Parts without automotive qualification can be used for non-automotive applications if all other critical parameters match.

Q: Are all substitute parts RoHS and REACH compliant?
A: The provided substitute parts are listed as ROHS3 compliant and REACH unaffected, matching the compliance required for the main part number.

Q: Does operating temperature maximum affect substitution?
A: Substitute parts must meet or exceed the 150°C junction temperature rating of the main part when the application demands high-temperature operation. Parts with 125°C maximum are suitable only for applications within their thermal limits.

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