RB520S30YL Equivalent & Substitute Parts

Part Overview

The RB520S30YL is a Schottky rectifier diode manufactured by Nexperia USA Inc., rated for 30 V DC reverse voltage and 200 mA average rectified current in a surface mount SOD-523 package. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	600 mV @ 200 mA	—
Package / Case	SC-79, SOD-523	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the RB520S30YL is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io): 200 mA minimum
Package / Case: SC-79, SOD-523 (surface mount)
Technology: Schottky diode
RoHS Status: ROHS3 Compliant

Secondary Compatibility Factors:

Mounting Type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)
Product Status: Active

Parts are classified as direct equivalents when all primary criteria are met with identical electrical ratings. Parts are classified as similar when one or more secondary electrical parameters (forward voltage, reverse leakage current, capacitance, or operating temperature range) differ within acceptable engineering tolerances, or when current rating is reduced below the primary specification.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [mV]	Ir @ Vr [µA]	Tj (Max) [°C]	Package	Packaging Type	Status
RB520S30YL	Nexperia USA Inc.	30	200	600 @ 200	1 @ 10	150	SOD-523	Tape & Reel (TR)	Active
RB520S30T1G	onsemi	30	200	600 @ 200	1 @ 10	150	SOD-523	Cut Tape (CT) & Digi-Reel®	Active
RB520S-30-TP	Micro Commercial Co	30	200	600 @ 200	1 @ 10	125	SOD-523	Tape & Reel (TR)	Active
SBAT54XV2T1G	onsemi	30	200	800 @ 100	2 @ 25	125	SOD-523	Tape & Reel (TR)	Active
CES520,L3F	Toshiba Semiconductor and Storage	30	200	600 @ 200	5 @ 30	125	SOD-523	Cut Tape (CT) & Digi-Reel®	Active
XBS013S15R-G	Torex Semiconductor Ltd	30	100	1000 @ 100	2 @ 25	125	SOD-523	Cut Tape (CT) & Digi-Reel®	Active

Engineering Selection Recommendations

Direct Equivalent (Identical Electrical Performance):

RB520S30T1G (onsemi) is a direct functional equivalent to RB520S30YL. Both parts share identical voltage rating (30 V), current rating (200 mA), forward voltage specification (600 mV @ 200 mA), reverse leakage current (1 µA @ 10 V), and maximum junction temperature (150°C). The primary difference is packaging format: RB520S30T1G is supplied in Cut Tape (CT) & Digi-Reel® format versus Tape & Reel (TR) for the main part. Both are ROHS3 compliant, MSL 1, and Active status.

Compatible Substitutes (Reduced Operating Temperature Range):

RB520S-30-TP (Micro Commercial Co) and CES520,L3F (Toshiba Semiconductor and Storage) maintain the primary electrical specifications (30 V, 200 mA, 600 mV forward voltage) but operate at a maximum junction temperature of 125°C versus 150°C for the main part. These parts are suitable for applications where the reduced thermal rating does not constrain system performance. Both are ROHS3 compliant and Active status.

Compatible Substitutes (Modified Electrical Characteristics):

SBAT54XV2T1G (onsemi) meets the 30 V voltage and 200 mA current requirements but exhibits higher forward voltage (800 mV @ 100 mA) and operates at 125°C maximum junction temperature. This part is suitable when forward voltage variation is acceptable within circuit design margins.

XBS013S15R-G (Torex Semiconductor Ltd) is rated for 30 V and 100 mA average rectified current, which is 50% of the main part specification. This part is suitable only for applications where the required current does not exceed 100 mA. Operating temperature is limited to 125°C maximum.

All substitute parts maintain SOD-523 package compatibility, surface mount mounting type, ROHS3 compliance, and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can RB520S30T1G replace RB520S30YL in all applications?

A: RB520S30T1G is electrically and functionally identical to RB520S30YL across all specified parameters. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Substitution is valid for all applications where the packaging format is compatible with assembly equipment and procurement workflows.

Q: What is the significance of the 150°C versus 125°C maximum junction temperature difference?

A: The RB520S30YL operates at a maximum junction temperature of 150°C, while RB520S-30-TP and CES520,L3F are limited to 125°C. In applications where the diode junction temperature approaches or exceeds 125°C under worst-case thermal conditions, the reduced thermal rating of substitute parts may limit performance or reliability. Thermal analysis of the specific application is required to determine if the lower rating is acceptable.

Q: Why is XBS013S15R-G listed as a substitute if it has only 100 mA current rating?

A: XBS013S15R-G meets the 30 V voltage requirement and SOD-523 package specification. However, its 100 mA average rectified current rating is 50% of the main part specification. This part is a valid substitute only for circuit designs where the actual operating current does not exceed 100 mA. Applications requiring the full 200 mA capability must use parts with 200 mA or higher ratings.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (RB520S30T1G, RB520S-30-TP, SBAT54XV2T1G, CES520,L3F, and XBS013S15R-G) are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the main part specification.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Tape & Reel (TR) is a continuous reel format suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® provides smaller quantity packaging options. Both formats contain the same component in the same SOD-523 package. Selection depends on procurement volume requirements and assembly equipment compatibility.

Q: Can SBAT54XV2T1G be used if forward voltage is higher than the main part?

A: SBAT54XV2T1G exhibits 800 mV forward voltage at 100 mA, compared to 600 mV at 200 mA for RB520S30YL. Forward voltage variation affects circuit performance in applications sensitive to voltage drop. Substitution is valid only when circuit design margins accommodate the higher forward voltage specification.

Q: Is CES520,L3F suitable for automotive applications?

A: CES520,L3F is ROHS3 compliant and Active status. However, the main part RB520S30YL carries AEC-Q101 automotive qualification, which CES520,L3F does not explicitly list in the provided specifications. Automotive applications requiring AEC-Q101 qualification should use RB520S30YL or verified AEC-Q101 qualified alternatives.

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