RB521AS-30T2R Equivalent & Substitute Parts Reference

Part Overview

RB521AS-30T2R is a Schottky diode manufactured by Rohm Semiconductor, categorized under Diodes, Rectifiers. This part is currently listed as Obsolete. Alternative models are necessary due to product obsolescence, to maintain design continuity, ensure availability, and support long-term manufacturing and repairs where direct replacement is required.

Key Parameters

Parameter	RB521AS-30T2R
Manufacturer	Rohm Semiconductor
Category	Diodes, Rectifiers
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	200mA
Voltage - Forward (Vf) (Max) @ If	500 mV @ 200 mA
Current - Reverse Leakage @ Vr	30 µA @ 10 V
Mounting Type	Surface Mount
Package / Case	2-SMD, No Lead
Supplier Device Package	VML2
Operating Temperature - Junction	150°C (Max)
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitute diodes are grouped exclusively by matching within these explicit key parameters: technology (Schottky), mounting type (Surface Mount), category (Diodes, Rectifiers), RoHS compliance (ROHS3 Compliant), similar package style (2-SMD, No Lead), and operating temperature rating (150°C Max). Only parts with defined specification overlap in electrical and mechanical parameters within this product category are considered.

Parameter Comparison

Parameter	RB521AS-30T2R	RB161QS-40T18R
Manufacturer	Rohm Semiconductor	Rohm Semiconductor
Category	Diodes, Rectifiers	Diodes, Rectifiers
Technology	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	40 V
Current - Average Rectified (Io)	200mA	1A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 200 mA	600 mV @ 1 A
Current - Reverse Leakage @ Vr	30 µA @ 10 V	100 µA @ 10 V
Mounting Type	Surface Mount	Surface Mount
Package / Case	2-SMD, No Lead	2-SMD, No Lead
Supplier Device Package	VML2	SMD1006
Operating Temperature - Junction	150°C (Max)	150°C (Max)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

Selection of RB161QS-40T18R as a substitute for RB521AS-30T2R is based on product status (Active vs Obsolete), matching RoHS3 and REACH compliance, equivalent mounting type, and similar package format within the same manufacturer and category. Certification parameters and compliance levels are equivalent per the provided data.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters when substituting RB521AS-30T2R?
A1: Key parameters include manufacturer, diode technology (Schottky), voltage and current ratings, package type, mounting style, operating temperature, RoHS compliance, and product lifecycle status.

Q2: Are the package and mounting types directly compatible between RB521AS-30T2R and RB161QS-40T18R?
A2: Both are surface mount devices using a 2-SMD, no lead package form, ensuring compatibility by the input-provided specifications.

Q3: Does the substitute part meet the same environmental and compliance standards?
A3: Both parts are ROHS3 compliant and REACH unaffected, matching the required environmental and regulatory criteria.

Q4: Why is it necessary to consider substitute parts for RB521AS-30T2R?
A4: The RB521AS-30T2R is listed as Obsolete. Substitute parts are necessary to maintain supply continuity and ensure ongoing manufacturability.

Q5: Can the same surface-mount assembly processes be used for RB161QS-40T18R?
A5: Both parts share the same mounting type and moisture sensitivity level (MSL 1), supporting equivalent assembly process requirements.

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