RSFDL RFG Equivalent & Substitute Parts

Part Overview

The RSFDL RFG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 500 mA average rectified current in a Sub SMA surface mount package. This component is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements necessitate different electrical characteristics within compatible parameter ranges. This reference provides qualified alternatives that maintain functional compatibility based on electrical and mechanical specifications.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the RSFDL RFG are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 200 V reverse voltage, 500 mA average rectified current, 1.3 V forward voltage at 500 mA, 150 ns reverse recovery time, and 5 µA reverse leakage current. These parts differ only in packaging format (Tape & Reel or Cut Tape) and product status designation. Parametric equivalents include RSFDL and RSFDL R3G.

Similar Parts share the same 200 V reverse voltage rating and DO-219AB package but differ in one or more of the following parameters: average rectified current rating, forward voltage characteristics, reverse recovery time, reverse leakage current, or operating temperature range. Similar parts include RS07D-GS08, VS-1EFH02-M3/I, and VS-2EFH02HM3/I. These parts are suitable for applications where the specified parameter differences are acceptable within circuit design margins.

The critical parameters determining substitution eligibility are: Voltage - DC Reverse (Vr) (Max), Current - Average Rectified (Io), Package / Case, and Mounting Type.

Parameter Comparison

Parameter	RSFDL RFG	RSFDL	RSFDL R3G	RS07D-GS08	VS-1EFH02-M3/I	VS-2EFH02HM3/I
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	500 mA	500 mA	500 mA	500 mA	1 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA	1.3 V @ 500 mA	1.3 V @ 500 mA	1.15 V @ 700 mA	930 mV @ 1 A	950 mV @ 2 A
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns	150 ns	16 ns	25 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	10 µA @ 200 V	2 µA @ 200 V	2 µA @ 200 V
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-65 to 175 °C	-65 to 175 °C
Product Status	Active	Not For New Designs	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Parametric Equivalents (Direct Substitution):

RSFDL R3G is recommended as the primary equivalent to RSFDL RFG. Both parts maintain identical electrical specifications and are rated as Active product status. RSFDL R3G is available in Cut Tape packaging format with 725 pieces in stock inventory. This part is suitable for new designs and provides full functional compatibility.

RSFDL is a parametric equivalent available in Tape & Reel packaging with 13,300 pieces in stock inventory. However, this part is designated as Not For New Designs and should be used only for legacy system maintenance or replacement applications where existing inventory must be consumed.

For Similar Parts (Application-Dependent Substitution):

RS07D-GS08 manufactured by Vishay General Semiconductor maintains the 200 V / 500 mA rating with identical reverse recovery time (150 ns). This part is qualified to AEC-Q101 automotive standard and carries Active product status. The forward voltage is lower (1.15 V @ 700 mA) and reverse leakage is higher (10 µA @ 200 V) compared to RSFDL RFG. This part is suitable for applications where automotive qualification is required and the specified parameter differences are acceptable.

VS-1EFH02-M3/I and VS-2EFH02HM3/I are higher-current rated alternatives (1 A and 2 A respectively) from the Vishay FRED Pt® series. These parts feature significantly lower reverse recovery times (16 ns and 25 ns) and lower reverse leakage current (2 µA @ 200 V). VS-2EFH02HM3/I includes AEC-Q101 automotive qualification. These parts are suitable for applications requiring improved switching performance or higher current capacity, with extended operating temperature range (-65 to 175 °C).

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and DO-219AB surface mount packaging compatible with RSFDL RFG footprints.

Frequently Asked Questions (FAQ)

Q: Can RSFDL R3G be used as a direct replacement for RSFDL RFG?

A: Yes. RSFDL R3G is a parametric equivalent with identical electrical specifications: 200 V reverse voltage, 500 mA average rectified current, 1.3 V forward voltage at 500 mA, 150 ns reverse recovery time, and 5 µA reverse leakage current. Both parts use DO-219AB surface mount packaging. The difference is packaging format (Cut Tape versus the original format) and both are Active product status.

Q: What is the difference between parametric equivalents and similar parts?

A: Parametric equivalents (RSFDL and RSFDL R3G) maintain all electrical specifications identical to RSFDL RFG. Similar parts (RS07D-GS08, VS-1EFH02-M3/I, VS-2EFH02HM3/I) share the same 200 V rating and DO-219AB package but differ in current rating, forward voltage, reverse recovery time, reverse leakage current, or temperature range. Similar parts require circuit design verification before substitution.

Q: Why is RSFDL marked as Not For New Designs?

A: RSFDL carries a Not For New Designs designation, indicating the manufacturer has discontinued active development and recommends using alternative part numbers for new circuit designs. This part remains available for legacy system support and replacement applications. For new designs, RSFDL R3G is the recommended parametric equivalent.

Q: Can VS-1EFH02-M3/I or VS-2EFH02HM3/I replace RSFDL RFG in existing circuits?

A: These parts share the same 200 V reverse voltage rating and DO-219AB package but have higher current ratings (1 A and 2 A respectively) and significantly lower reverse recovery times (16 ns and 25 ns versus 150 ns). They are suitable for applications where improved switching performance is beneficial or where higher current capacity is required. Circuit design verification is necessary to confirm the parameter differences do not negatively impact circuit operation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed (RSFDL RFG, RSFDL, RSFDL R3G, RS07D-GS08, VS-1EFH02-M3/I, and VS-2EFH02HM3/I) are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging is supplied on continuous tape wound on reels, suitable for high-volume automated assembly processes. Cut Tape packaging is supplied as individual segments cut from the tape, suitable for lower-volume applications or manual assembly. Both formats use identical DO-219AB component packages and are electrically equivalent.

Q: Does RS07D-GS08 have automotive qualification?

A: Yes. RS07D-GS08 is qualified to AEC-Q101 automotive standard. This qualification is relevant for applications requiring automotive-grade components. VS-2EFH02HM3/I also carries AEC-Q101 qualification.

Q: What is the operating temperature range difference between RSFDL RFG and Vishay alternatives?

A: RSFDL RFG operates from -55 to 150 °C junction temperature. VS-1EFH02-M3/I and VS-2EFH02HM3/I operate from -65 to 175 °C, providing extended temperature range capability. This difference is relevant for applications operating at temperature extremes.

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