RSFDL RQG Equivalent & Substitute Parts

Part Overview

The RSFDL RQG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 500 mA average rectified current. This component is packaged in the Sub SMA (DO-219AB) surface mount configuration and is classified as a fast recovery diode with a reverse recovery time of 150 ns. The part is currently in Active product status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary to address inventory availability, packaging format requirements, design optimization for specific applications, and to provide alternative sourcing options from qualified manufacturers while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	500 mA
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 @ 200 V
Package / Case	DO-219AB
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the RSFDL RQG 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, 5 µA reverse leakage current, and DO-219AB package configuration. These parts differ only in packaging format (Tape & Reel or Cut Tape) and product status designation.

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 (1 A or 2 A), forward voltage characteristics, reverse recovery time, reverse leakage current, or operating temperature range. These parts are suitable for applications where the higher current rating or improved performance characteristics provide design benefits.

The substitution logic is based strictly on the following key parameters:

Voltage - DC Reverse (Vr) (Max): 200 V (required match for all substitutes)
Package / Case: DO-219AB (required match for all substitutes)
Mounting Type: Surface Mount (required match for all substitutes)
Current - Average Rectified (Io): 500 mA minimum (parametric equivalents match exactly; similar parts may exceed this rating)

Parameter Comparison

Parameter	RSFDL RQG	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
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	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	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°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Product Status	Active	Not For New Designs	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalent Selection (RSFDL, RSFDL R3G)

The RSFDL and RSFDL R3G parts are parametric equivalents to the RSFDL RQG, maintaining identical electrical specifications. Selection between these three parts is determined by packaging format and product status:

RSFDL RQG: Active product status. Select for new designs requiring Sub SMA packaging in the specified format.
RSFDL: Not For New Designs status. This part is available in higher inventory (13,300 pcs) and Tape & Reel packaging. Use only for legacy design support or replacement applications where new design qualification is not required.
RSFDL R3G: Active product status. Available in Cut Tape packaging with 725 pcs inventory. Select when Cut Tape format is required for assembly processes.

Similar Part Selection (RS07D-GS08, VS-1EFH02-M3/I, VS-2EFH02HM3/I)

These parts share the 200 V reverse voltage rating and DO-219AB package but offer different current ratings and performance characteristics:

RS07D-GS08 (Vishay): Maintains 500 mA current rating with automotive qualification (AEC-Q101). Forward voltage is 1.15 V @ 700 mA. Reverse leakage is 10 µA @ 200 V. Select when automotive-grade qualification is required and the higher forward voltage specification is acceptable.
VS-1EFH02-M3/I (Vishay FRED Pt® series): Rated for 1 A average rectified current with significantly improved reverse recovery time of 16 ns (versus 150 ns). Forward voltage is 930 mV @ 1 A. Reverse leakage is 2 µA @ 200 V. Operating temperature range extends to -65°C ~ 175°C. Select for applications requiring higher current capacity or superior switching performance.
VS-2EFH02HM3/I (Vishay FRED Pt® series): Rated for 2 A average rectified current with reverse recovery time of 25 ns. Forward voltage is 950 mV @ 2 A. Includes automotive qualification (AEC-Q101). Operating temperature range extends to -65°C ~ 175°C. Select for high-current applications requiring automotive qualification and fast switching characteristics.

All substitute parts maintain RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

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

A: Yes. RSFDL R3G is a parametric equivalent with identical electrical specifications (200 V, 500 mA, 1.3 V forward voltage, 150 ns reverse recovery time). The difference is packaging format: RSFDL R3G is supplied in Cut Tape while RSFDL RQG uses a different tape format. Both are Active product status and suitable for new designs.

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

A: Parametric equivalents (RSFDL, RSFDL R3G) match all electrical specifications of the RSFDL RQG exactly. Similar parts (RS07D-GS08, VS-1EFH02-M3/I, VS-2EFH02HM3/I) share the same 200 V reverse voltage and DO-219AB package but differ in current rating, forward voltage, reverse recovery time, or leakage current. Similar parts are suitable when the application can tolerate or benefit from these parameter differences.

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

A: The RSFDL part carries a "Not For New Designs" status, indicating it is in the mature or end-of-life phase of its product lifecycle. This designation means the manufacturer does not recommend using this part for new circuit designs. Use RSFDL only for legacy product support or replacement applications. For new designs, select RSFDL RQG or RSFDL R3G.

Q: Can I use VS-1EFH02-M3/I or VS-2EFH02HM3/I in place of RSFDL RQG?

A: These Vishay parts are suitable substitutes if the application can accommodate higher current ratings (1 A or 2 A respectively) and improved performance characteristics. The 200 V reverse voltage and DO-219AB package are identical. However, the forward voltage, reverse recovery time, and reverse leakage specifications differ. Verify that the circuit design can operate with these parameter variations before substitution.

Q: What is the advantage of the Vishay FRED Pt® series (VS-1EFH02-M3/I, VS-2EFH02HM3/I)?

A: The FRED Pt® series offers significantly faster reverse recovery times (16 ns and 25 ns respectively, compared to 150 ns for the RSFDL RQG). This results in lower switching losses and improved efficiency in high-frequency applications. Additionally, these parts feature lower reverse leakage current (2 µA versus 5 µA) and extended operating temperature range (-65°C ~ 175°C versus -55°C ~ 150°C).

Q: Is RS07D-GS08 suitable for automotive applications?

A: Yes. RS07D-GS08 carries AEC-Q101 automotive qualification. It maintains the 200 V reverse voltage and 500 mA current rating of the RSFDL RQG with a lower forward voltage specification (1.15 V @ 700 mA). Select this part when automotive-grade qualification is a design requirement.

Q: What packaging formats are available for these substitute parts?

A: All substitute parts use the DO-219AB (Sub SMA) surface mount package. Packaging format differences are limited to tape configuration: RSFDL RQG and RS07D-GS08 use Tape & Reel (TR), RSFDL R3G uses Cut Tape (CT), and RSFDL uses Tape & Reel (TR). Verify your assembly equipment compatibility with the required tape format before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed (RSFDL RQG, RSFDL, RSFDL R3G, RS07D-GS08, VS-1EFH02-M3/I, VS-2EFH02HM3/I) are RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

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