RSFBL RFG Equivalent & Substitute Parts

Part Overview

The RSFBL RFG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100V DC reverse voltage and 500mA average rectified current in a Surface Mount Sub SMA package. This component is classified as Active product status and complies with ROHS3 and REACH standards. Substitute parts are identified to provide alternative sourcing options where inventory availability, packaging preferences, or current rating requirements necessitate component selection from qualified manufacturers.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	500mA
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Package / Case	DO-219AB
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RSFBL RFG is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V
Package / Case: DO-219AB
Mounting Type: Surface Mount
Fast Recovery Speed Classification: ≤ 500ns, > 200mA (Io)
Operating Temperature Range: Minimum -55°C junction temperature
RoHS3 Compliance

Allowable Variation Parameters:

Current - Average Rectified (Io): Substitute parts rated at 500mA or higher are acceptable
Reverse Recovery Time (trr): Faster recovery times are acceptable
Reverse Leakage Current: Lower leakage values are acceptable
Forward Voltage (Vf): Variations within the fast recovery diode classification are acceptable

The substitute parts ES07B-GS08, ES07B-GS18, and VS-2EFH01HM3/I meet the mandatory matching criteria and are qualified as equivalent or higher-rated alternatives.

Parameter Comparison

Parameter	RSFBL RFG	ES07B-GS08	ES07B-GS18	VS-2EFH01HM3/I
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	500mA	500mA	1.2A	2A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA	980 mV @ 1 A	980 mV @ 1 A	950 mV @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	150 ns	25 ns	25 ns	16 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V	2 µA @ 100 V
Capacitance @ Vr, F	4pF @ 4V, 1MHz	4pF @ 4V, 1MHz	4pF @ 4V, 1MHz	Not specified
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

ES07B-GS08 (Vishay General Semiconductor - Diodes Division)

The ES07B-GS08 is a direct electrical equivalent to the RSFBL RFG with identical voltage and current ratings. This part is qualified to AEC-Q101 automotive standard and carries Active product status. The faster reverse recovery time (25 ns versus 150 ns) and lower forward voltage characteristics provide improved switching performance. This substitute is suitable for applications requiring automotive-grade qualification.

ES07B-GS18 (Vishay General Semiconductor - Diodes Division)

The ES07B-GS18 is rated for 1.2A average rectified current, exceeding the 500mA requirement of the RSFBL RFG. This part maintains the same 100V reverse voltage rating and DO-219AB package. The higher current rating provides design margin for applications with variable load conditions. This substitute is appropriate where increased current capacity is beneficial without circuit redesign.

VS-2EFH01HM3/I (Vishay General Semiconductor - Diodes Division)

The VS-2EFH01HM3/I is rated for 2A average rectified current and belongs to the FRED Pt® series. This part is qualified to AEC-Q101 automotive standard with an extended operating temperature range (-65°C to 175°C). The superior reverse recovery time (16 ns) and lower reverse leakage current (2 µA) indicate enhanced performance characteristics. This substitute is selected for high-reliability applications requiring automotive qualification and extended temperature operation.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and Surface Mount DO-219AB packaging, ensuring direct compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the ES07B-GS08 be used as a direct replacement for the RSFBL RFG?

A: Yes. The ES07B-GS08 matches the RSFBL RFG in voltage rating (100V), current rating (500mA), package type (DO-219AB), and operating temperature range (-55°C to 150°C). Both parts are ROHS3 compliant and classified as fast recovery diodes. The ES07B-GS08 exhibits faster reverse recovery time (25 ns) and lower forward voltage, representing an equivalent or improved substitute.

Q: What is the difference between ES07B-GS18 and ES07B-GS08?

A: The primary difference is current rating. The ES07B-GS18 is rated for 1.2A average rectified current, while the ES07B-GS08 is rated for 500mA. Both parts share identical voltage ratings (100V), package type (DO-219AB), and operating temperature range. The ES07B-GS18 is selected when higher current capacity is required or when design margin for current is necessary.

Q: Is the VS-2EFH01HM3/I suitable for non-automotive applications?

A: Yes. While the VS-2EFH01HM3/I carries AEC-Q101 automotive qualification, this certification indicates enhanced reliability and quality standards. The part is suitable for any application requiring the specified electrical characteristics: 100V reverse voltage, 2A current rating, fast recovery speed, and DO-219AB package. The extended operating temperature range (-65°C to 175°C) provides additional margin for demanding environments.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the DO-219AB (SMF) package for Surface Mount applications. However, packaging options differ: ES07B-GS08 is available in Cut Tape (CT) and Digi-Reel® format, while ES07B-GS18 and VS-2EFH01HM3/I are supplied in Tape & Reel (TR) format. Verify packaging compatibility with your procurement and assembly requirements.

Q: What is the significance of reverse recovery time differences?

A: Reverse recovery time (trr) indicates the speed at which a diode transitions from conducting to blocking state. The RSFBL RFG has a trr of 150 ns, while substitute parts range from 16 ns to 25 ns. Faster recovery times reduce switching losses and electromagnetic interference in high-frequency applications. Substitutes with faster recovery times are compatible with the RSFBL RFG and provide improved performance characteristics.

Q: Can a higher-rated diode (ES07B-GS18 or VS-2EFH01HM3/I) be used in place of the RSFBL RFG?

A: Yes. Higher current-rated diodes are acceptable substitutes when the 100V reverse voltage rating and DO-219AB package are maintained. The circuit will operate within design specifications because the diode will not be stressed beyond its rating. Higher-rated substitutes provide design margin and are compatible with existing PCB layouts.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The RSFBL RFG and all three substitute parts (ES07B-GS08, ES07B-GS18, and VS-2EFH01HM3/I) are ROHS3 compliant and REACH unaffected. All parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

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