RSFGL RUG Equivalent & Substitute Parts

Part Overview

The RSFGL RUG is a general-purpose fast recovery diode 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. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative packaging configurations while maintaining electrical and mechanical compatibility within specified 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
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 RSFGL RUG 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 5 µA reverse leakage current at 400 V. These parts differ only in packaging configuration (Tape & Reel or Cut Tape) and product status designation. Parametric equivalents include RSFGL (Tape & Reel) and RSFGL RVG (Cut Tape).

Similar Parts share the same 400 V reverse voltage rating and DO-219AB package but operate at higher current ratings (700 mA) with different speed classifications and recovery characteristics. These parts are suitable for applications where the higher current capacity provides design margin or where the application does not require the fast recovery specification. Similar parts include S07G-GS08 and S07G-GS18 from Vishay General Semiconductor - Diodes Division.

Substitution eligibility is determined by matching the following key parameters: DC reverse voltage rating, average rectified current capacity, package type, mounting configuration, and operating temperature range.

Parameter Comparison

Parameter	RSFGL RUG	RSFGL	RSFGL RVG	S07G-GS08	S07G-GS18
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
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 Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
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
Supplier Device Package	Sub SMA	Sub SMA	Sub SMA	DO-219AB (SMF)	DO-219AB (SMF)
Mounting Type	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	-55 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 Configuration	Bulk	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)
Qualification	—	—	—	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

RSFGL RVG is the recommended parametric equivalent for new designs. This part maintains identical electrical specifications to the RSFGL RUG across all critical parameters while offering Active product status and Cut Tape packaging. RSFGL RVG is RoHS3 compliant and carries the same operating temperature range (-55°C to 150°C).

RSFGL (Tape & Reel configuration) is a parametric equivalent with identical electrical performance but carries Not For New Designs product status. This part is suitable for legacy system support and maintenance applications where the original specification must be preserved.

For Applications Permitting Higher Current Capacity:

S07G-GS08 and S07G-GS18 are suitable alternatives when the application circuit can accommodate 700 mA average rectified current and standard recovery speed characteristics. Both parts are AEC-Q101 qualified and carry Active product status. These parts feature higher reverse leakage current (10 µA) and significantly longer reverse recovery time (1.8 µs) compared to the RSFGL RUG. Selection between S07G-GS08 and S07G-GS18 depends on reverse leakage measurement conditions; S07G-GS08 specifies leakage at 400 V while S07G-GS18 specifies leakage at 200 V.

All substitute parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can RSFGL RVG be used as a direct replacement for RSFGL RUG?

A: Yes. RSFGL RVG is a parametric equivalent with identical electrical specifications: 400 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. The difference is packaging configuration (Cut Tape versus bulk) and Active product status. Both parts use the DO-219AB package and are suitable for surface mount assembly.

Q: What is the difference between RSFGL and RSFGL RVG?

A: Both parts are parametric equivalents with identical electrical specifications. RSFGL is supplied in Tape & Reel packaging and carries Not For New Designs product status. RSFGL RVG is supplied in Cut Tape packaging and carries Active product status. For new designs, RSFGL RVG is the preferred selection.

Q: Can S07G-GS08 or S07G-GS18 replace RSFGL RUG in all applications?

A: S07G-GS08 and S07G-GS18 share the same 400 V reverse voltage rating and DO-219AB package but differ in current rating (700 mA versus 500 mA), speed classification (Standard Recovery versus Fast Recovery), and reverse recovery time (1.8 µs versus 150 ns). These parts are suitable only for applications where the higher current capacity is acceptable and where the longer reverse recovery time does not degrade circuit performance. Applications requiring fast recovery characteristics must use RSFGL RUG, RSFGL, or RSFGL RVG.

Q: What is the difference between S07G-GS08 and S07G-GS18?

A: Both parts are electrically identical with 400 V reverse voltage and 700 mA average rectified current. The difference is in reverse leakage current measurement conditions: S07G-GS08 specifies 10 µA at 400 V, while S07G-GS18 specifies 10 µA at 200 V. Both parts are AEC-Q101 qualified and carry Active product status.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RSFGL RUG, RSFGL, RSFGL RVG, S07G-GS08, and S07G-GS18 are all RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are REACH unaffected and classified under ECCN EAR99.

Q: What packaging options are available for the RSFGL RUG equivalent parts?

A: RSFGL RUG is supplied in bulk packaging. RSFGL is available in Tape & Reel (TR) configuration. RSFGL RVG is available in Cut Tape (CT) configuration. S07G-GS08 and S07G-GS18 are available in Tape & Reel (TR) configuration. All parts use the DO-219AB package for surface mount assembly.

Q: What is the operating temperature range for these diodes?

A: All substitute parts operate across the junction temperature range of -55°C to 150°C, providing identical thermal performance specifications.

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