RSFGL RHG Equivalent & Substitute Parts

Part Overview

The RSFGL RHG 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 fast recovery characteristics suitable for standard rectification applications.

Alternative part numbers become necessary when the primary part number reaches end-of-life status, when specific packaging configurations are required for manufacturing processes, or when design requirements necessitate equivalent electrical performance with different supplier options.

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
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-219AB	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the RSFGL RHG diode is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V minimum
Current - Average Rectified (Io): 500 mA minimum
Package / Case: DO-219AB (Sub SMA compatible)
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum

Packaging Variants: The RSFGL base part number is available in multiple packaging configurations: Tape & Reel (TR) and Cut Tape (CT). These variants maintain identical electrical specifications while differing only in supply format.

Similar Performance Alternatives: Parts S07G-GS08 and S07G-GS18 from Vishay General Semiconductor provide equivalent 400 V reverse voltage rating with higher current capacity (700 mA) and identical package specifications. These parts are classified as Similar rather than Parametric Equivalent due to differences in recovery speed characteristics and reverse leakage specifications.

Parameter Comparison

Parameter	RSFGL RHG	RSFGL	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
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 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 Format	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Parametric Equivalent Selection:

RSFGL and RSFGL RVG are direct parametric equivalents to RSFGL RHG, maintaining identical electrical specifications across all critical parameters. Selection between these variants depends on packaging requirements:

RSFGL RHG: Tape & Reel format, Active product status
RSFGL: Tape & Reel format, Not For New Designs status
RSFGL RVG: Cut Tape format, Active product status

For new design implementations, RSFGL RVG in Cut Tape format or RSFGL RHG in Tape & Reel format are preferred due to Active product status designation.

Similar Performance Alternative Selection:

S07G-GS08 and S07G-GS18 from Vishay General Semiconductor provide similar electrical performance with the following distinctions:

Higher current capacity: 700 mA versus 500 mA
Standard recovery speed (1.8 µs) versus fast recovery (150 ns)
Automotive grade qualification with AEC-Q101 certification
Slightly lower forward voltage drop (1.1 V @ 1 A)

These alternatives are suitable for applications where the higher current rating and automotive qualification provide design advantages, provided the slower recovery time does not conflict with circuit timing requirements.

All substitute options maintain DO-219AB package compatibility, surface mount mounting type, -55°C to 150°C operating temperature range, and RoHS3 compliance.

Frequently Asked Questions (FAQ)

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

A: Yes. RSFGL RVG is a parametric equivalent with identical electrical specifications. The only difference is the packaging format: RSFGL RVG is supplied in Cut Tape (CT) format while RSFGL RHG is supplied in Tape & Reel (TR) format. Both are Active product status and suitable for new designs.

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

A: RSFGL and RSFGL RHG are electrically identical parametric equivalents. The primary distinction is product status: RSFGL is designated Not For New Designs, while RSFGL RHG is Active. For new design implementations, RSFGL RHG is the recommended selection.

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

A: S07G-GS08 and S07G-GS18 are similar alternatives with equivalent 400 V reverse voltage rating and DO-219AB package compatibility. However, they differ in recovery speed (1.8 µs standard recovery versus 150 ns fast recovery) and current capacity (700 mA versus 500 mA). These alternatives are suitable only for applications where the slower recovery time and higher current rating do not create circuit conflicts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RSFGL RHG, RSFGL, RSFGL RVG, S07G-GS08, and S07G-GS18 are all RoHS3 compliant and REACH unaffected.

Q: What is the significance of the DO-219AB package designation?

A: DO-219AB is the standardized package specification for Sub SMA surface mount diodes. All listed substitute parts use this identical package, ensuring mechanical and electrical compatibility in PCB layouts and reflow soldering processes.

Q: Why do S07G-GS08 and S07G-GS18 have different reverse leakage specifications?

A: S07G-GS08 specifies reverse leakage at 400 V (10 µA), while S07G-GS18 specifies reverse leakage at 200 V (10 µA). Both maintain the same leakage current value but are characterized at different voltage points. At the rated 400 V operating voltage, both parts meet the application requirements.

Q: Is automotive qualification required for RSFGL RHG applications?

A: Automotive qualification (AEC-Q101) is not inherent to RSFGL RHG. If automotive-grade components are required, S07G-GS08 and S07G-GS18 provide AEC-Q101 qualified alternatives with equivalent voltage ratings and package specifications.

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