MBR120VLSFT3 Equivalent & Substitute Parts

Part Overview

The MBR120VLSFT3 is a Schottky rectifier diode rated for 20 V DC reverse voltage and 1 A average rectified current in a SOD-123F surface mount package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs. Active alternatives with identical or compatible electrical and mechanical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	340 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	600 µA @ 20 V
Mounting Type	Surface Mount
Package / Case	SOD-123F
Operating Temperature - Junction	-65°C ~ 125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBR120VLSFT3 is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 20 V
Current - Average Rectified (Io): 1 A
Technology: Schottky
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Compatible Package Variants: Substitutes may utilize SOD-123F, SOD-123W, PowerDI™ 123, or S-FLAT (1.6x3.5) packages, provided they maintain identical electrical ratings and surface mount compatibility.

Acceptable Parameter Variations:

Voltage - Forward (Vf) (Max) @ If: Substitutes may range from 340 mV to 500 mV @ 1 A
Current - Reverse Leakage @ Vr: Substitutes may range from 50 µA to 1 mA @ 20 V
Operating Temperature - Junction: Substitutes may extend to 150°C maximum
Capacitance @ Vr, F: Variations permitted based on package type

Substitutes are grouped into three categories: direct manufacturer equivalents (identical part number variants), parametric equivalents (same electrical ratings, different packaging), and similar alternatives (compatible electrical specifications with minor parameter deviations).

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	Package / Case	Tj (Max)	Reverse Leakage @ Vr
MBR120VLSFT3	onsemi	Obsolete	20 V	1 A	340 mV @ 1 A	SOD-123F	125°C	600 µA @ 20 V
MBR120VLSFT3G	onsemi	Active	20 V	1 A	340 mV @ 1 A	SOD-123F	125°C	600 µA @ 20 V
MBR120VLSFT1G	onsemi	Active	20 V	1 A	340 mV @ 1 A	SOD-123F	125°C	600 µA @ 20 V
PMEG2010EH,115	Nexperia USA Inc.	Active	20 V	1 A	500 mV @ 1 A	SOD-123F	150°C	200 µA @ 20 V
PMEG2010AEH,115	Nexperia USA Inc.	Active	20 V	1 A	430 mV @ 1 A	SOD-123F	150°C	200 µA @ 20 V
PMEG2010ER,115	Nexperia USA Inc.	Active	20 V	1 A	340 mV @ 1 A	SOD-123W	150°C	1 mA @ 20 V
PMEG2010BER,115	Nexperia USA Inc.	Active	20 V	1 A	450 mV @ 1 A	SOD-123W	150°C	50 µA @ 20 V
PMEG2005EH,115	Nexperia USA Inc.	Active	20 V	500 mA	390 mV @ 500 mA	SOD-123F	150°C	200 µA @ 20 V
DFLS120L-7	Diodes Incorporated	Active	20 V	1 A	360 mV @ 1 A	POWERDI®123	125°C	1 mA @ 20 V
CRS06(TE85L,Q,M)	Toshiba Semiconductor and Storage	Active	20 V	1 A	360 mV @ 1 A	SOD-123F	125°C	1 mA @ 20 V
PMEG2015EH,115	NXP Semiconductors	Active	20 V	1.5 A	660 mV @ 1.5 A	SOD-123F	150°C	70 µA @ 20 V

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Recommended Primary Substitutes):

MBR120VLSFT3G and MBR120VLSFT1G are active onsemi products with identical electrical specifications to the obsolete MBR120VLSFT3. Both maintain 20 V reverse voltage, 1 A average rectified current, 340 mV forward voltage at 1 A, and SOD-123F packaging. MBR120VLSFT1G offers significantly higher inventory availability (71,200 pcs) compared to MBR120VLSFT3G (2,200 pcs). Both are ROHS3 compliant with MSL 1 rating.

Parametric Equivalents (Compatible Electrical Performance):

PMEG2010EH,115 (Nexperia) and PMEG2010AEH,115 (Nexperia, AEC-Q100 qualified) provide identical 20 V / 1 A ratings in SOD-123F packaging. PMEG2010AEH,115 includes automotive qualification. Forward voltage specifications range from 430 mV to 500 mV at 1 A, representing acceptable operational variation. Both support extended junction temperature to 150°C.

PMEG2010ER,115 (Nexperia) matches the original 340 mV forward voltage specification but utilizes SOD-123W packaging instead of SOD-123F. This variant is suitable for applications where package footprint differences are acceptable.

Similar Alternatives (Compatible with Design Considerations):

DFLS120L-7 (Diodes Incorporated) and CRS06(TE85L,Q,M) (Toshiba) maintain 20 V / 1 A electrical ratings with 360 mV forward voltage. DFLS120L-7 uses PowerDI™ 123 packaging; CRS06(TE85L,Q,M) uses S-FLAT (1.6x3.5) packaging. Both require PCB layout verification due to package differences.

PMEG2005EH,115 (Nexperia) is rated for 500 mA average rectified current, representing a current derating from the original 1 A specification. This part is suitable only for applications with reduced current requirements.

PMEG2015EH,115 (NXP) is rated for 1.5 A average rectified current, providing current margin above the original specification. Forward voltage at rated current (660 mV @ 1.5 A) is higher than the original part and must be evaluated for thermal and efficiency impact.

Compliance Status:

All recommended substitutes maintain ROHS3 compliance and MSL 1 moisture sensitivity rating. Nexperia PMEG2010AEH,115 includes AEC-Q100 automotive qualification for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can MBR120VLSFT3G directly replace MBR120VLSFT3 without PCB modifications?

A: Yes. MBR120VLSFT3G is an active onsemi product with identical electrical specifications (20 V, 1 A, 340 mV @ 1 A) and SOD-123F packaging. No PCB layout changes are required.

Q: What is the difference between MBR120VLSFT3G and MBR120VLSFT1G?

A: Both parts are electrically identical with matching 20 V / 1 A ratings and SOD-123F packaging. The primary difference is inventory availability: MBR120VLSFT1G has significantly higher stock (71,200 pcs vs. 2,200 pcs). Both are active products from onsemi.

Q: Can PMEG2010EH,115 replace MBR120VLSFT3 in all applications?

A: PMEG2010EH,115 maintains identical voltage and current ratings (20 V, 1 A) and SOD-123F packaging. Forward voltage is 500 mV @ 1 A compared to 340 mV in the original part. This 160 mV increase must be evaluated for thermal dissipation and circuit performance impact. The part is suitable for most applications but requires verification in power-sensitive designs.

Q: Why do some substitutes have different forward voltage specifications?

A: Forward voltage variation is a normal characteristic of Schottky diodes across different manufacturers and process technologies. All listed substitutes maintain the 20 V reverse voltage and 1 A current ratings. Forward voltage differences affect power dissipation and must be considered in thermal calculations.

Q: Is PMEG2010AEH,115 suitable for automotive applications?

A: Yes. PMEG2010AEH,115 carries AEC-Q100 automotive qualification and is rated for 20 V / 1 A with SOD-123F packaging. This part is appropriate for automotive-grade designs requiring qualified components.

Q: Can DFLS120L-7 be used as a direct replacement?

A: DFLS120L-7 maintains 20 V / 1 A electrical specifications but uses PowerDI™ 123 packaging instead of SOD-123F. PCB layout verification is required due to different package footprint and pin configuration. Electrical performance is compatible.

Q: What is the significance of the S-FLAT package in CRS06(TE85L,Q,M)?

A: CRS06(TE85L,Q,M) uses S-FLAT (1.6x3.5) packaging, which differs from the original SOD-123F footprint. This Toshiba part maintains 20 V / 1 A electrical ratings but requires PCB redesign for package compatibility. The part is electrically suitable but not a direct drop-in replacement.

Q: Is PMEG2005EH,115 a suitable substitute?

A: PMEG2005EH,115 is rated for 500 mA average rectified current, representing a 50% current derating from the original 1 A specification. This part is suitable only for applications with maximum current requirements of 500 mA or less. It is not recommended for designs requiring full 1 A capability.

Q: Why is PMEG2015EH,115 listed as a similar alternative?

A: PMEG2015EH,115 is rated for 1.5 A average rectified current, providing current margin above the original 1 A specification. However, forward voltage at rated current is 660 mV @ 1.5 A, significantly higher than the original 340 mV @ 1 A. This part is suitable for applications where higher current capability is beneficial and increased forward voltage dissipation is acceptable.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, matching the original MBR120VLSFT3 environmental specifications.

Q: What is the recommended substitute for highest inventory availability?

A: MBR120VLSFT1G (onsemi) offers the highest inventory availability at 71,200 pcs with identical electrical specifications and SOD-123F packaging to the original part.

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