RS1GL RFG Equivalent & Substitute Parts

Part Overview

The RS1GL RFG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400V DC reverse voltage with 800mA average rectified current. This surface mount component features fast recovery characteristics with a reverse recovery time of 150 nanoseconds and is housed in a DO-219AB (Sub SMA) package. The device is actively produced and RoHS3 compliant, making it suitable for power supply and rectification applications requiring fast switching performance.

Equivalent and substitute parts are identified when alternative manufacturers offer diodes with matching or superior electrical specifications within the same package family or compatible alternatives that satisfy circuit requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	400	V
Current - Average Rectified (Io)	800	mA
Voltage - Forward (Vf) Maximum @ If	1.3 @ 800 mA	V
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Capacitance @ Vr, F	10	pF @ 4V, 1MHz
Package / Case	DO-219AB	Sub SMA
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1	Unlimited

Substitute Part Grouping Explanation

Substitute parts for the RS1GL RFG are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent Classification: Parts that maintain identical or superior electrical specifications across all critical parameters including reverse voltage rating, average rectified current, forward voltage drop, reverse recovery time, and reverse leakage current. These parts operate within the same thermal and electrical envelope.

Similar Classification: Parts that share the same reverse voltage rating and package form factor but may differ in current rating, recovery speed, or leakage characteristics. These parts are suitable for applications where the circuit design permits relaxed performance requirements.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) Maximum: Must equal or exceed 400V
Current - Average Rectified (Io): Must equal or exceed 800mA for parametric equivalents
Package / Case: Must be DO-219AB or compatible surface mount package
Reverse Recovery Time (trr): Fast recovery (≤500ns) preferred for parametric equivalents
Operating Temperature Range: Must encompass -55°C to 150°C
RoHS Compliance: ROHS3 Compliant status required

Parameter Comparison

Parameter	RS1GL RFG (Main)	RS1GL (SMC)	RS1GL R3G (TSC)	S07G-GS08 (Vishay)	S07G-GS18 (Vishay)
Manufacturer	Taiwan Semiconductor Corporation	SMC Diode Solutions	Taiwan Semiconductor Corporation	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)	800 mA	1 A	800 mA	700 mA	700 mA
Voltage - Forward (Vf) Max @ If	1.3 V @ 800 mA	1.3 V @ 1 A	1.3 V @ 800 mA	1.1 V @ 1 A	1.1 V @ 1 A
Speed Classification	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Standard Recovery >500ns, >200mA	Standard Recovery >500ns, >200mA
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	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz
Package / Case	DO-219AB	SOD-123F	DO-219AB	DO-219AB	DO-219AB
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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalent Selection:

The RS1GL manufactured by SMC Diode Solutions represents a parametric equivalent with superior current rating (1A versus 800mA). This part maintains identical reverse voltage, forward voltage drop, reverse recovery time, and reverse leakage characteristics. The primary difference is package form factor (SOD-123F versus DO-219AB), which requires PCB layout modification. This part is suitable for direct substitution in applications where the SOD-123F footprint is accommodated.

The RS1GL R3G manufactured by Taiwan Semiconductor Corporation is a direct parametric equivalent in tape and reel packaging. All electrical specifications match the main part exactly, with identical package geometry (DO-219AB). This part differs only in packaging format (Tape & Reel versus Cut Tape), making it suitable for high-volume production environments.

Similar Part Selection:

The S07G-GS08 and S07G-GS18 manufactured by Vishay General Semiconductor are classified as similar parts. Both maintain the 400V reverse voltage rating and DO-219AB package compatibility. However, these parts feature standard recovery characteristics (1.8 µs reverse recovery time) compared to the fast recovery specification (150 ns) of the main part. Current rating is reduced to 700mA. These parts are suitable for applications where switching speed is not critical and lower current requirements are acceptable. Both parts carry AEC-Q101 automotive qualification.

Compliance and Certification Basis:

All identified substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols. The Vishay parts include AEC-Q101 automotive qualification, providing additional reliability assurance for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can the RS1GL from SMC Diode Solutions replace the RS1GL RFG in all applications?

A: The SMC RS1GL is a parametric equivalent with superior current rating (1A) and identical electrical performance. However, it uses SOD-123F packaging instead of DO-219AB. Direct substitution requires PCB redesign to accommodate the different footprint. Electrical performance is fully compatible.

Q: What is the primary difference between the RS1GL R3G and the RS1GL RFG?

A: The RS1GL R3G is supplied in Tape & Reel packaging format, while the RS1GL RFG is supplied in Cut Tape format. All electrical specifications and the DO-219AB package are identical. Selection depends on production volume and packaging requirements.

Q: Are the Vishay S07G-GS08 and S07G-GS18 suitable replacements for fast-switching applications?

A: The Vishay parts feature standard recovery characteristics (1.8 µs) rather than fast recovery (150 ns). They are not suitable for applications requiring fast switching performance. These parts are appropriate for general rectification where switching speed is not a design constraint.

Q: What is the significance of the 700mA current rating on the Vishay parts compared to the 800mA main part?

A: The Vishay parts are rated for 700mA average rectified current, which is lower than the main part's 800mA rating. These parts are suitable for applications with current requirements up to 700mA. Applications requiring the full 800mA capability must use the main part or the SMC equivalent rated for 1A.

Q: Do all substitute parts maintain the same operating temperature range?

A: Yes, all identified substitute parts operate across the -55°C to 150°C junction temperature range, matching the main part specification.

Q: What packaging considerations apply when selecting between these parts?

A: The main part and Vishay alternatives use DO-219AB (Sub SMA) packaging with identical footprints. The SMC equivalent uses SOD-123F packaging, which requires different PCB layout. The RS1GL R3G uses identical packaging but in Tape & Reel format for production environments. Package selection depends on PCB design and manufacturing volume requirements.

Q: Are there compliance differences between the substitute parts?

A: All parts are ROHS3 compliant with MSL Level 1 rating. The Vishay parts include AEC-Q101 automotive qualification, providing additional certification for automotive applications. The main part and SMC equivalent do not list automotive qualification.

Q: Can the RS1GL from SMC be used in automotive applications?

A: The SMC RS1GL does not carry AEC-Q101 automotive qualification. For automotive applications requiring this certification, the Vishay S07G-GS08 or S07G-GS18 are appropriate selections, provided the lower current rating and standard recovery characteristics are acceptable.

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