RSFDL MHG Equivalent & Substitute Parts

Part Overview

The RSFDL MHG 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 fast recovery diode is packaged in the DO-219AB (Sub SMA) surface mount configuration and is classified as Active product status. The RSFDL MHG serves applications requiring efficient rectification in power supply circuits, switching power supplies, and general-purpose rectification where fast recovery characteristics are beneficial.

Substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design revisions call for equivalent electrical performance from different manufacturers. The parts listed below maintain electrical equivalence within the specified parameter ranges while offering different packaging options and availability profiles.

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°C ~ 150°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the RSFDL MHG 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 rating, 500 mA average rectified current, 1.3 V forward voltage at 500 mA, 150 ns reverse recovery time, and DO-219AB package configuration. These parts differ only in packaging format (Tape & Reel or Cut Tape) or 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 electrical parameters. These parts are suitable for applications where the specific parameter differences do not impact circuit performance. Similar parts include RS07D-GS08, VS-1EFH02-M3/I, and VS-2EFH02HM3/I.

The critical parameters determining substitution eligibility are:

Voltage - DC Reverse (Vr) (Max): 200 V
Package / Case: DO-219AB
Mounting Type: Surface Mount
Speed Classification: Fast Recovery

Parameter Comparison

Parameter	RSFDL MHG	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
Speed Classification	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)
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Supplier Device Package	Sub SMA	Sub SMA	Sub SMA	DO-219AB (SMF)	DO-219AB (SMF)	DO-219AB (SMF)
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
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

RSFDL and RSFDL R3G are direct parametric equivalents to the RSFDL MHG, offering identical electrical performance. RSFDL is available in Tape & Reel packaging but carries a "Not For New Designs" product status, making it suitable only for legacy system support or replacement applications. RSFDL R3G is available in Cut Tape packaging and maintains Active product status, making it the preferred choice for new designs requiring the exact electrical specifications of the RSFDL MHG.

RS07D-GS08 is a Vishay General Semiconductor equivalent offering identical 200 V reverse voltage and 500 mA current ratings with matching 150 ns reverse recovery time. This part includes AEC-Q101 automotive qualification and is available in high volume. The forward voltage specification differs slightly (1.15 V @ 700 mA versus 1.3 V @ 500 mA), and reverse leakage is higher at 10 µA. This part is suitable for applications where automotive qualification is required.

VS-1EFH02-M3/I and VS-2EFH02HM3/I are higher-current alternatives from Vishay's FRED Pt® series, rated for 1 A and 2 A respectively. Both maintain the 200 V reverse voltage rating and DO-219AB package. These parts feature significantly lower reverse recovery times (16 ns and 25 ns) and lower reverse leakage (2 µA). The extended operating temperature range (-65°C ~ 175°C) provides additional thermal margin. These parts are suitable for applications requiring higher current capacity or superior switching performance. VS-2EFH02HM3/I includes AEC-Q101 automotive qualification.

All substitute parts maintain ROHS3 compliance, Moisture Sensitivity Level 1, and surface mount DO-219AB packaging, ensuring compatibility with existing PCB designs and manufacturing processes.

Frequently Asked Questions (FAQ)

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

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, and 150 ns reverse recovery time. The only difference is packaging format (Cut Tape versus the original packaging). Both use the DO-219AB package and surface mount configuration.

Q: What is the difference between RSFDL and RSFDL R3G?

A: Both parts are parametric equivalents with identical electrical specifications. The primary difference is product status: RSFDL is designated "Not For New Designs," while RSFDL R3G is Active. For new designs, RSFDL R3G is the recommended choice. RSFDL is available in Tape & Reel packaging, while RSFDL R3G is available in Cut Tape packaging.

Q: Can VS-1EFH02-M3/I or VS-2EFH02HM3/I replace the RSFDL MHG?

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). They feature significantly lower reverse recovery times and lower reverse leakage current. These parts are suitable for applications where the higher current capacity and improved switching performance do not create design conflicts. The extended operating temperature range (-65°C ~ 175°C) provides additional thermal margin compared to the RSFDL MHG (-55°C ~ 150°C).

Q: Is RS07D-GS08 suitable for automotive applications?

A: Yes. RS07D-GS08 carries AEC-Q101 automotive qualification and is suitable for automotive applications. It maintains the 200 V reverse voltage and 500 mA current ratings with 150 ns reverse recovery time. The forward voltage and reverse leakage specifications differ slightly from the RSFDL MHG but remain within acceptable ranges for general-purpose rectification.

Q: What packaging options are available for equivalent parts?

A: The RSFDL MHG is supplied in standard packaging format. Equivalent parts are available in Tape & Reel (TR) and Cut Tape (CT) packaging options. All parts use the DO-219AB surface mount package, ensuring compatibility with existing PCB designs and pick-and-place equipment.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed—RSFDL, RSFDL R3G, RS07D-GS08, VS-1EFH02-M3/I, and VS-2EFH02HM3/I—are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with standard manufacturing processes and environmental regulations.

Q: What is the difference in reverse recovery time between RSFDL MHG and the Vishay FRED Pt® alternatives?

A: The RSFDL MHG has a reverse recovery time of 150 ns. VS-1EFH02-M3/I has 16 ns, and VS-2EFH02HM3/I has 25 ns. Lower reverse recovery time results in reduced switching losses and improved efficiency in high-frequency switching applications. The choice depends on circuit requirements and whether the improved performance justifies the higher current rating.

Q: Can I use a higher-current rated diode in place of the RSFDL MHG?

A: Yes, within design constraints. VS-1EFH02-M3/I (1 A) and VS-2EFH02HM3/I (2 A) can replace the RSFDL MHG (500 mA) in applications where the circuit design accommodates the different electrical characteristics. The lower forward voltage and reverse recovery time of these parts may improve circuit efficiency. However, the application circuit must be evaluated to ensure compatibility with the different specifications.

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