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MBR120LSFT3 Equivalent & Substitute Parts
Part Overview
The MBR120LSFT3 is a Schottky rectifier diode rated for 20 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123F package. This part is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. Active alternatives with identical or superior electrical characteristics are available from multiple manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) (Max) | 20 | V |
| Current - Average Rectified (Io) | 1 | A |
| Voltage - Forward (Vf) (Max) @ If | 450 mV @ 1 A | mV |
| Speed | Fast Recovery ≤ 500ns, > 200mA (Io) | ns |
| Current - Reverse Leakage @ Vr | 400 µA @ 20 V | µA |
| Technology | Schottky | — |
| Mounting Type | Surface Mount | — |
| Package / Case | SOD-123F | — |
| Operating Temperature - Junction | -55 to 125 | °C |
| RoHS Status | RoHS non-compliant | — |
Substitute Part Grouping Explanation
Substitution of the MBR120LSFT3 is determined by the following critical parameters:
Mandatory Matching Criteria:
- Voltage - DC Reverse (Vr) (Max): 20 V minimum
- Current - Average Rectified (Io): 1 A minimum
- Technology: Schottky
- Mounting Type: Surface Mount
- Package / Case: SOD-123F or mechanically compatible alternative
Acceptable Variation Criteria:
- Voltage - Forward (Vf) (Max) @ If: May vary within component design specifications
- Current - Reverse Leakage @ Vr: May vary; lower values indicate improved performance
- Operating Temperature - Junction: Extended ranges are acceptable
- RoHS Status: Active parts with RoHS3 compliance are preferred over obsolete non-compliant parts
- Packaging Format: Cut Tape (CT), Tape & Reel (TR), and Digi-Reel® formats are interchangeable for the same electrical component
Substitute parts are grouped into two categories: Direct Manufacturer Equivalents (same base part number with different packaging or compliance status) and Parametric Equivalents (alternative manufacturers meeting or exceeding electrical specifications).
Parameter Comparison
| Part Number | Manufacturer | Vr (Max) [V] | Io [A] | Vf (Max) @ If [mV] | Reverse Leakage @ Vr [µA] | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| MBR120LSFT3 | onsemi | 20 | 1 | 450 @ 1 A | 400 @ 20 V | SOD-123F | Obsolete | Non-compliant |
| MBR120LSFT3G | onsemi | 20 | 1 | 450 @ 1 A | 400 @ 20 V | SOD-123F | Active | ROHS3 Compliant |
| MBR120LSFT1G | onsemi | 20 | 1 | 450 @ 1 A | 400 @ 20 V | SOD-123F | Active | ROHS3 Compliant |
| PMEG2010EH,115 | Nexperia USA Inc. | 20 | 1 | 500 @ 1 A | 200 @ 20 V | SOD-123F | Active | ROHS3 Compliant |
| PMEG2010AEH,115 | Nexperia USA Inc. | 20 | 1 | 430 @ 1 A | 200 @ 20 V | SOD-123F | Active | ROHS3 Compliant |
| PMEG2010BER,115 | Nexperia USA Inc. | 20 | 1 | 450 @ 1 A | 50 @ 20 V | SOD-123W | Active | ROHS3 Compliant |
| PMEG2010ER,115 | Nexperia USA Inc. | 20 | 1 | 340 @ 1 A | 1 @ 20 V | SOD-123W | Active | ROHS3 Compliant |
| PMEG2005EH,115 | Nexperia USA Inc. | 20 | 0.5 | 390 @ 500 mA | 200 @ 20 V | SOD-123F | Active | ROHS3 Compliant |
| CRS06(TE85L,Q,M) | Toshiba Semiconductor and Storage | 20 | 1 | 360 @ 1 A | 1 @ 20 V | SOD-123F | Active | ROHS3 Compliant |
| DFLS130-7 | Diodes Incorporated | 30 | 1 | 420 @ 1 A | 1 @ 30 V | POWERDI®123 | Active | ROHS3 Compliant |
| DFLS130L-7 | Diodes Incorporated | 30 | 1 | 310 @ 1 A | 1 @ 30 V | POWERDI®123 | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Recommendation: Direct Manufacturer Equivalents
MBR120LSFT3G and MBR120LSFT1G are the preferred substitutes. Both are active products from onsemi with identical electrical specifications to the obsolete MBR120LSFT3. The primary distinction is packaging format: MBR120LSFT3G is supplied in Tape & Reel (TR) format, while MBR120LSFT1G is supplied in Cut Tape (CT) & Digi-Reel® format. Both achieve ROHS3 compliance, addressing regulatory requirements that the original part does not meet.
Secondary Recommendation: Nexperia PMEG2010 Series
The PMEG2010AEH,115 and PMEG2010EH,115 variants meet all mandatory electrical criteria with 20 V reverse voltage and 1 A current rating in SOD-123F packaging. PMEG2010AEH,115 includes AEC-Q100 automotive qualification. PMEG2010BER,115 and PMEG2010ER,115 are available in SOD-123W packaging with improved reverse leakage characteristics (50 µA and 1 µA respectively at 20 V).
Alternative Recommendation: Toshiba CRS06(TE85L,Q,M)
The CRS06(TE85L,Q,M) provides superior forward voltage performance (360 mV @ 1 A) and significantly lower reverse leakage (1 µA @ 20 V) compared to the original part. Package compatibility is maintained with SOD-123F. High inventory availability (273,200 pcs) supports procurement continuity.
Higher Voltage Alternative: Diodes Incorporated DFLS130 Series
DFLS130-7 and DFLS130L-7 offer 30 V reverse voltage rating with 1 A current capacity, providing additional design margin. These parts use PowerDI™ 123 packaging, which is mechanically compatible with SOD-123F footprints. DFLS130L-7 demonstrates superior forward voltage performance (310 mV @ 1 A).
Not Recommended: PMEG2005EH,115
This part is rated for 500 mA average rectified current, which is insufficient for applications requiring the full 1 A capability of the original MBR120LSFT3.
Frequently Asked Questions (FAQ)
Q: Can MBR120LSFT3G directly replace MBR120LSFT3 in existing designs?
A: Yes. MBR120LSFT3G is electrically identical to MBR120LSFT3 with matching voltage, current, and forward voltage specifications. The primary difference is product status (active vs. obsolete) and RoHS compliance. Packaging format (Tape & Reel) is suitable for automated assembly processes.
Q: What is the difference between MBR120LSFT3G and MBR120LSFT1G?
A: Both parts are electrically identical. The difference is packaging format: MBR120LSFT3G is supplied in Tape & Reel (TR) format, while MBR120LSFT1G is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on procurement and assembly requirements.
Q: Are Nexperia PMEG2010 variants suitable replacements?
A: Yes, with considerations. PMEG2010AEH,115 and PMEG2010EH,115 meet all mandatory electrical criteria (20 V, 1 A, SOD-123F). PMEG2010AEH,115 includes AEC-Q100 automotive qualification. PMEG2010BER,115 and PMEG2010ER,115 use SOD-123W packaging and offer improved reverse leakage performance but require PCB footprint verification.
Q: Can I use PMEG2005EH,115 as a substitute?
A: No. PMEG2005EH,115 is rated for 500 mA average rectified current, which is insufficient for applications requiring 1 A operation. This part is suitable only for designs with reduced current requirements.
Q: What are the advantages of CRS06(TE85L,Q,M) over the original MBR120LSFT3?
A: CRS06(TE85L,Q,M) provides superior forward voltage performance (360 mV vs. 450 mV @ 1 A) and significantly lower reverse leakage (1 µA vs. 400 µA @ 20 V). These characteristics result in reduced power dissipation and improved circuit efficiency. Package compatibility is maintained with SOD-123F.
Q: When should I consider DFLS130-7 or DFLS130L-7?
A: These parts are suitable when additional voltage margin is required. The 30 V reverse voltage rating provides 50% higher voltage headroom compared to the 20 V MBR120LSFT3. PowerDI™ 123 packaging is mechanically compatible with SOD-123F footprints. DFLS130L-7 offers superior forward voltage performance (310 mV @ 1 A).
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All recommended substitute parts listed in this document are ROHS3 compliant. The original MBR120LSFT3 is RoHS non-compliant. Compliance is a key advantage of transitioning to active alternatives.
Q: What is the operating temperature range for substitute parts?
A: onsemi MBR120LSFT3G and MBR120LSFT1G maintain the original -55°C to 125°C junction temperature range. Nexperia PMEG2010 variants specify 150°C maximum junction temperature. Toshiba CRS06(TE85L,Q,M) operates from -40°C to 125°C. Diodes Incorporated DFLS130L-7 operates from -40°C to 125°C. Verify temperature requirements for your specific application.
Q: Can I mix different substitute parts in the same design?
A: Yes, provided all parts meet the mandatory electrical criteria (20 V minimum reverse voltage, 1 A minimum current rating, Schottky technology, surface mount). However, standardizing on a single part number is recommended for procurement efficiency and supply chain management.
Q: What packaging formats are available for substitute parts?
A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and individual component packaging. Selection depends on assembly process requirements and procurement volume. Electrical specifications remain identical across packaging formats for the same base part number.
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