RSFGLHMQG Equivalent & Substitute Parts

Part Overview

The RSFGLHMQG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 500 mA average rectified current. This surface mount component features fast recovery characteristics with a reverse recovery time of 150 ns and is housed in a DO-219AB Sub SMA package. The part carries Active product status and meets AEC-Q101 automotive qualification standards with ROHS3 compliance.

Substitute parts become necessary when the primary part number reaches end-of-life status, when packaging formats require adjustment for manufacturing processes, or when inventory availability fluctuates across distribution channels. The RSFGLHMQG maintains identical electrical specifications across its substitute variants, ensuring direct functional interchangeability within the specified parameter envelope.

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	-
Technology	Standard	-
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-

Substitute Part Grouping Explanation

Substitution eligibility for the RSFGLHMQG is determined by strict equivalence across the following critical parameters:

Electrical Specifications (Must Match Exactly):

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 500 mA
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 500 mA
Reverse Recovery Time (trr): 150 ns
Current - Reverse Leakage @ Vr: 5 µA @ 400 V
Capacitance @ Vr, F: 4 pF @ 4V, 1MHz
Operating Temperature - Junction: -55°C to 150°C

Mechanical & Package Specifications (Must Match Exactly):

Package / Case: DO-219AB
Supplier Device Package: Sub SMA
Mounting Type: Surface Mount

Compliance & Qualification (Must Match Exactly):

Technology: Standard
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

The primary distinction among substitute parts lies in packaging format (Tape & Reel versus Cut Tape) and product status designation. These variations do not affect electrical or mechanical compatibility but address different procurement and manufacturing workflow requirements.

Parameter Comparison

Parameter	RSFGLHMQG	RSFGL	RSFGL RVG
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V
Current - Average Rectified (Io)	500 mA	500 mA	500 mA
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA	1.3 V @ 500 mA	1.3 V @ 500 mA
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Capacitance @ Vr, F	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-219AB	DO-219AB	DO-219AB
Supplier Device Package	Sub SMA	Sub SMA	Sub SMA
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Technology	Standard	Standard	Standard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Not For New Designs	Active
Packaging Format	Bulk	Tape & Reel (TR)	Cut Tape (CT)

Engineering Selection Recommendations

RSFGLHMQG (Primary Part): This part maintains Active product status and is suitable for new design implementations. It carries AEC-Q101 automotive qualification, making it appropriate for automotive and industrial applications requiring long-term supply assurance. The bulk packaging format accommodates manual assembly and prototype development workflows.

RSFGL (Parametric Equivalent): This part number carries Not For New Designs status, indicating it is retained for legacy system support and field replacement only. It is electrically and mechanically identical to RSFGLHMQG but is supplied in Tape & Reel format, which is optimized for high-volume automated assembly processes. This part should not be selected for new product development.

RSFGL RVG (Parametric Equivalent): This variant maintains Active product status and is supplied in Cut Tape format, which bridges manual and semi-automated assembly requirements. It is suitable for both new designs and production environments where Cut Tape packaging provides operational advantages over bulk or full reel formats. All electrical specifications, compliance certifications, and temperature ratings remain identical to RSFGLHMQG.

Selection between RSFGLHMQG and RSFGL RVG for new designs depends on packaging workflow requirements. Both parts satisfy identical electrical and compliance criteria. The RSFGL part number should be used only when supporting existing products or field replacements where legacy part numbers are specified.

Frequently Asked Questions (FAQ)

Q: Can RSFGL be used as a direct replacement for RSFGLHMQG in new designs?

A: No. While RSFGL is electrically and mechanically identical, it carries Not For New Designs product status. RSFGLHMQG or RSFGL RVG should be selected for new product development to ensure long-term supply continuity and manufacturer support.

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

A: Both parts are electrically identical with matching electrical specifications, temperature ratings, and compliance certifications. The primary difference is packaging format: RSFGLHMQG is supplied in bulk packaging, while RSFGL RVG is supplied in Cut Tape format. Both maintain Active product status. Selection depends on assembly process requirements.

Q: Are all three part numbers compatible with the same PCB footprint?

A: Yes. All three parts use the DO-219AB package with Sub SMA supplier device package designation and Surface Mount mounting type. PCB footprints and assembly processes are identical across all variants.

Q: Does the packaging format affect electrical performance?

A: No. Packaging format (bulk, Tape & Reel, or Cut Tape) affects only procurement, storage, and assembly workflow. Electrical specifications, performance characteristics, and reliability remain unchanged regardless of packaging format.

Q: Are all substitute parts AEC-Q101 qualified?

A: RSFGLHMQG carries explicit AEC-Q101 automotive qualification. RSFGL and RSFGL RVG share identical electrical specifications and compliance certifications. Confirm AEC-Q101 status with the manufacturer for RSFGL and RSFGL RVG if automotive qualification is a design requirement.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage or handling.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 Compliant and REACH Unaffected, meeting environmental and regulatory requirements for European and global markets.

Q: Can I mix packaging formats in the same production run?

A: Yes. Since all three parts are electrically and mechanically identical, they can be used interchangeably within the same assembly process. However, different packaging formats may require different handling equipment or procedures, so manufacturing process compatibility should be verified with your assembly partner.

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