RSFGL Equivalent & Substitute Parts Reference

Part Overview

The RSFGL is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 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).

Substitute parts are necessary when the primary RSFGL variant becomes unavailable, when specific packaging formats are required for manufacturing processes, or when design requirements necessitate alternative electrical characteristics within compatible parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	500	mA
Voltage - Forward (Vf) (Max) @ If	1.3 @ 500 mA	V
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5 @ 400 V	µA
Capacitance @ Vr, F	4 @ 4V, 1MHz	pF
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-219AB	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

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

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 400 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 format. These parts differ only in packaging format (Tape & Reel or Cut Tape) or product status designation. Parametric equivalents include RSFGL (Tape & Reel variant) and RSFGL RVG (Cut Tape variant).

Similar Parts share the same 400 V reverse voltage rating and DO-219AB package but feature higher current ratings (700 mA versus 500 mA) and different recovery characteristics. These parts include S07G-GS08 and S07G-GS18 from Vishay General Semiconductor - Diodes Division. Similar parts are suitable for applications where the higher current capacity and different speed characteristics are acceptable within the circuit design constraints.

The key parameters determining substitution eligibility are: reverse voltage rating (400 V), package type (DO-219AB), mounting method (Surface Mount), and operating temperature range (-55°C to 150°C).

Parameter Comparison

Parameter	RSFGL (Main)	RSFGL (TR)	RSFGL RVG	S07G-GS08	S07G-GS18
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Taiwan Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	500 mA	500 mA	500 mA	700 mA	700 mA
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA	1.3 V @ 500 mA	1.3 V @ 500 mA	1.1 V @ 1 A	1.1 V @ 1 A
Speed	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery >500ns	Standard Recovery >500ns
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns	1.8 µs	1.8 µs
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	10 µA @ 400 V	10 µA @ 200 V
Capacitance @ Vr, F	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Product Status	Active	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	-	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

For Parametric Equivalent Selection:

RSFGL RVG is the recommended parametric equivalent for new designs. This variant maintains identical electrical specifications to the main RSFGL part while offering Active product status and Cut Tape packaging format. The RSFGL variant in Tape & Reel format is electrically equivalent but carries Not For New Designs status and should be reserved for legacy system maintenance or replacement applications only.

For Similar Part Selection:

S07G-GS08 and S07G-GS18 are suitable substitutes when circuit design permits higher current capacity (700 mA versus 500 mA) and standard recovery speed characteristics (1.8 µs versus 150 ns). Both Vishay parts maintain the 400 V reverse voltage rating, DO-219AB package compatibility, and identical operating temperature range. Both parts carry Active product status and AEC-Q101 automotive qualification. Selection between S07G-GS08 and S07G-GS18 depends on reverse leakage current requirements at specific voltage conditions.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and identical thermal operating range (-55°C to 150°C).

Frequently Asked Questions (FAQ)

Q: Can RSFGL RVG be used as a direct replacement for RSFGL in existing designs?

A: Yes. RSFGL RVG is a parametric equivalent with identical electrical specifications. The difference is packaging format (Cut Tape versus standard packaging) and product status. Verify that Cut Tape format is compatible with your assembly process.

Q: What is the primary difference between RSFGL and S07G-GS08?

A: The primary differences are current rating (500 mA versus 700 mA) and recovery speed. RSFGL features fast recovery at 150 ns, while S07G-GS08 features standard recovery at 1.8 µs. Both maintain 400 V reverse voltage rating and DO-219AB package compatibility. S07G-GS08 is suitable only if circuit design accommodates the higher current capacity and slower recovery characteristics.

Q: Are S07G-GS08 and S07G-GS18 interchangeable?

A: Both parts share identical electrical specifications except for reverse leakage current measurement conditions. S07G-GS08 specifies 10 µA leakage at 400 V, while S07G-GS18 specifies 10 µA leakage at 200 V. Both are Tape & Reel packaged and carry Active status with AEC-Q101 automotive qualification.

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

A: The RSFGL variant in Tape & Reel format carries this designation to encourage migration to RSFGL RVG for new product development. Both parts are electrically identical; the status change reflects manufacturing or supply chain optimization.

Q: Can I use S07G-GS08 in a circuit designed for RSFGL?

A: Substitution is possible only if the circuit design accommodates the higher current rating (700 mA) and standard recovery speed (1.8 µs). The 400 V reverse voltage rating and DO-219AB package are compatible. Circuit simulation or testing is necessary to confirm performance in your specific application.

Q: What packaging formats are available for RSFGL equivalents?

A: RSFGL is available in standard packaging format, RSFGL (Tape & Reel) for high-volume assembly, and RSFGL RVG in Cut Tape format. Packaging selection depends on manufacturing process requirements and volume specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RSFGL, RSFGL RVG, S07G-GS08, and S07G-GS18 are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

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