RSFAL MHG Equivalent & Substitute Parts

Part Overview

The RSFAL MHG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 500 mA average rectified current. This Surface Mount Sub SMA device is classified as Active product status and is RoHS3 compliant. The part is packaged in DO-219AB with fast recovery characteristics suitable for standard rectification applications.

Substitute parts become necessary when the primary part number reaches end-of-life status, when specific packaging formats are required for manufacturing processes, or when inventory constraints necessitate alternative sourcing from the same parametric family.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	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 @ 50 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	-

Substitute Part Grouping Explanation

Substitution eligibility for the RSFAL MHG is determined by strict parametric matching across the following critical specifications:

Electrical Parameters (Must Match Exactly):

Voltage - DC Reverse (Vr) (Max): 50 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 @ 50 V
Capacitance @ Vr, F: 4 pF @ 4V, 1MHz

Mechanical Parameters (Must Match Exactly):

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

Compliance Parameters (Must Match Exactly):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

The substitute parts RSFAL and RSFAL RVG meet all parametric requirements for direct substitution. Differences exist only in packaging format (Tape & Reel versus Cut Tape) and product status designation, which do not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	RSFAL MHG	RSFAL	RSFAL RVG
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 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 @ 50 V	5 µA @ 50 V	5 µA @ 50 V
Capacitance @ Vr, F	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz
Package / Case	DO-219AB	DO-219AB	DO-219AB
Supplier Device Package	Sub SMA	Sub SMA	Sub SMA
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
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	-	Tape & Reel (TR)	Cut Tape (CT)

Engineering Selection Recommendations

RSFAL MHG (Primary Part): This part maintains Active product status and is suitable for new design implementations. It provides full parametric equivalence with all substitute options while maintaining current manufacturing support.

RSFAL (Substitute): This part number carries Not For New Designs status, indicating it is in mature or declining production phase. It remains electrically and mechanically identical to RSFAL MHG but is supplied in Tape & Reel packaging format. This part is appropriate for legacy system maintenance or high-volume production runs where reel packaging is preferred for automated assembly.

RSFAL RVG (Substitute): This part maintains Active product status and is supplied in Cut Tape packaging format. It provides an alternative to RSFAL MHG when Cut Tape format is required for specific manufacturing processes or when inventory of the primary part is constrained. Full parametric equivalence is maintained.

Selection between these three part numbers should be based on:

Product status requirements for new design qualification
Packaging format compatibility with assembly equipment
Current inventory availability and lead time constraints
Manufacturing process specifications for tape format

Frequently Asked Questions (FAQ)

Q: Can RSFAL be used as a direct replacement for RSFAL MHG in new designs?

A: RSFAL carries Not For New Designs status and should not be selected for new design implementations. RSFAL MHG or RSFAL RVG are appropriate choices for new designs, as both maintain Active product status.

Q: What is the difference between RSFAL MHG and RSFAL RVG?

A: The electrical and mechanical specifications are identical. The primary difference is packaging format: RSFAL MHG is supplied in standard packaging, while RSFAL RVG is supplied in Cut Tape format. Both maintain Active product status.

Q: Are all three parts compatible with the same PCB assembly equipment?

A: All three parts use identical DO-219AB package and Sub SMA supplier device package specifications. Compatibility with assembly equipment depends on the equipment's tape format capability. RSFAL RVG (Cut Tape) and RSFAL (Tape & Reel) require equipment compatible with their respective tape formats.

Q: Do these parts have different thermal or electrical performance?

A: No. All three parts share identical electrical parameters including forward voltage, reverse voltage, current ratings, reverse recovery time, leakage current, and capacitance specifications. Operating temperature range is identical across all variants.

Q: Are there compliance or regulatory differences between these parts?

A: No. All three parts are ROHS3 compliant, REACH unaffected, and carry identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited). Compliance certifications are equivalent across all substitute options.

Q: Which part should be selected for high-volume production?

A: RSFAL (Tape & Reel format) is typically preferred for high-volume automated assembly due to reel packaging efficiency. However, RSFAL RVG (Cut Tape) may be selected if equipment is configured for cut tape processing. Both provide identical electrical performance.

Q: Can RSFAL MHG be substituted with RSFAL in existing production?

A: Electrical and mechanical substitution is valid. However, the Not For New Designs status of RSFAL should be considered in the context of long-term supply chain planning and design documentation requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message