RB511SM-40T2R Equivalent & Substitute Parts

Part Overview

The RB511SM-40T2R is an active Schottky diode manufactured by Rohm Semiconductor, rated for 40 V DC reverse voltage with 100 mA average rectified current. This component is packaged in EMD2 (SOD-523) surface mount configuration and is ROHS3 compliant with unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design optimization within the specified parameter envelope.

Substiute Parts

RB511SM-40T2R

Rohm SemiconductorIn Stock: 8220RB511SM-40T2R Datasheet

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BAT54KFILM

STMicroelectronicsIn Stock: 19467BAT54KFILM Datasheet

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NSVR0240V2T1G

onsemiIn Stock: 6197NSVR0240V2T1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RB511SM-40T2R are qualified based on the following criteria:

Electrical Compatibility Parameters:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 40 V
• Technology: Must be Schottky diode type
• Package / Case: Must be SC-79 or SOD-523 compatible
• Mounting Type: Must be Surface Mount

Current Rating Consideration: Substitute parts with average rectified current (Io) ratings equal to or greater than 100 mA are electrically compatible. Parts with higher current ratings operate within the same voltage class and maintain functional equivalence in applications rated for 100 mA or lower.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1) to ensure regulatory and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

RB511SM-40T2R (Primary Component) The RB511SM-40T2R remains the primary selection when Rohm Semiconductor sourcing is preferred or specified. This part is active, ROHS3 compliant, and maintains unlimited moisture sensitivity rating suitable for standard surface mount assembly processes.

BAT54KFILM (STMicroelectronics Substitute) The BAT54KFILM is electrically compatible for applications requiring 100 mA or lower current operation. This part provides 300 mA current capacity, exceeding the primary component specification. The extended operating temperature range (-40°C to 150°C) accommodates wider environmental conditions. ROHS3 compliance and MSL 1 rating ensure regulatory equivalence. Selection is appropriate when STMicroelectronics supply chain availability is advantageous.

NSVR0240V2T1G (onsemi Substitute) The NSVR0240V2T1G is electrically compatible for applications requiring 100 mA or lower current operation. This part provides 250 mA current capacity and includes AEC-Q101 automotive qualification. The extended operating temperature range (-55°C to 150°C) supports automotive and industrial applications. ROHS3 compliance and MSL 1 rating ensure regulatory equivalence. Selection is appropriate for automotive-grade applications or when onsemi supply chain availability is required.

Frequently Asked Questions (FAQ)

Q: Can BAT54KFILM or NSVR0240V2T1G be used as direct replacements for RB511SM-40T2R?

A: Yes. Both substitute parts meet the electrical requirements of the RB511SM-40T2R. All three components share identical 40 V reverse voltage rating, Schottky technology, SOD-523 package compatibility, and surface mount configuration. The substitute parts have equal or higher current ratings, making them functionally equivalent for applications rated at 100 mA or lower.

Q: What is the difference in forward voltage between these parts?

A: Forward voltage specifications differ at different measurement currents. The RB511SM-40T2R specifies 410 mV @ 10 mA, BAT54KFILM specifies 900 mV @ 100 mA, and NSVR0240V2T1G specifies 700 mV @ 200 mA. These measurements are taken at different current levels and reflect the characteristic behavior of each diode at those specific operating points. For applications operating at 10 mA, the RB511SM-40T2R exhibits lower forward voltage. For higher current applications, forward voltage characteristics must be evaluated at the actual operating current.

Q: Are all three parts ROHS3 compliant?

A: Yes. The RB511SM-40T2R, BAT54KFILM, and NSVR0240V2T1G are all ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). All parts are suitable for standard surface mount assembly processes without additional moisture control requirements.

Q: What is the difference between the packaging formats?

A: The RB511SM-40T2R is supplied in Tape & Reel (TR) format. The BAT54KFILM is supplied in Cut Tape (CT) & Digi-Reel® format. The NSVR0240V2T1G is supplied in Tape & Reel (TR) format. All three parts use the same SOD-523 package footprint and are compatible with standard surface mount pick-and-place equipment. Packaging format selection depends on production volume and assembly line requirements.

Q: Is NSVR0240V2T1G suitable for automotive applications?

A: Yes. The NSVR0240V2T1G carries AEC-Q101 automotive qualification and is rated for automotive-grade applications. The RB511SM-40T2R and BAT54KFILM do not carry automotive qualification. Selection of NSVR0240V2T1G is required when automotive-grade components are specified.

Q: What is the operating temperature range difference?

A: The RB511SM-40T2R is rated to 125°C junction temperature. The BAT54KFILM operates from -40°C to 150°C. The NSVR0240V2T1G operates from -55°C to 150°C. For applications requiring extended low-temperature operation below -40°C, the NSVR0240V2T1G is the appropriate selection. For standard commercial temperature ranges, all three parts are suitable.