S1MLS RVG Equivalent & Substitute Parts

Part Overview

The S1MLS RVG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 1.2 A average rectified current in a surface mount SOD-123HE package. This component is classified as Active product status and is suitable for new designs. Substitute parts become necessary when primary inventory is unavailable, when design requirements mandate specific manufacturer qualifications, or when supply chain optimization requires alternative sourcing from qualified manufacturers.

Substiute Parts

S1MLS RVG

Taiwan Semiconductor CorporationIn Stock: 941S1MLS RVG Datasheet

Current PartRFQ

RS1MFP

onsemiIn Stock: 7986RS1MFP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S1MLS RVG is determined by strict equivalence across the following critical parameters:

• Voltage Rating: 1000 V DC reverse voltage (Vr)
• Current Rating: 1.2 A average rectified current (Io)
• Forward Voltage: 1.3 V maximum at 1.2 A
• Speed Classification: Fast Recovery ≤ 500ns for currents > 200mA
• Reverse Leakage: 5 µA at 1000 V
• Package: SOD-123H surface mount package
• Temperature Range: -55°C to 150°C junction operating temperature
• Environmental Compliance: ROHS3 Compliant, MSL 1

The substitute part RS1MFP from onsemi meets all electrical and mechanical parameters required for direct substitution. Both parts share identical voltage, current, forward voltage, speed classification, reverse leakage, package configuration, temperature range, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: S1MLS RVG

The S1MLS RVG from Taiwan Semiconductor Corporation is the recommended choice for new designs. This part carries Active product status, indicating full manufacturer support and continued availability. It meets all electrical and mechanical requirements for 1000 V, 1.2 A general-purpose rectification applications in SOD-123HE surface mount packages.

Substitute Selection: RS1MFP

The RS1MFP from onsemi is a parametric equivalent suitable for direct substitution when S1MLS RVG inventory is unavailable. This part matches all critical electrical parameters and package specifications. However, RS1MFP carries Not For New Designs product status, indicating the manufacturer is phasing out this component. The RS1MFP includes automotive-grade qualification (AEC-Q101) and provides additional specifications including reverse recovery time (300 ns) and junction capacitance (18 pF @ 0V, 1MHz) not specified for the primary part.

Selection Criteria:

• Use S1MLS RVG for new product designs requiring long-term supply assurance
• Use RS1MFP for legacy system maintenance or when automotive qualification is required
• Both parts are ROHS3 compliant and MSL 1, suitable for standard surface mount assembly processes
• Both parts operate across the full -55°C to 150°C junction temperature range

Frequently Asked Questions (FAQ)

Q: Can RS1MFP be used as a direct replacement for S1MLS RVG in existing designs?

A: Yes. RS1MFP meets all critical electrical parameters: 1000 V reverse voltage, 1.2 A average rectified current, 1.3 V forward voltage at 1.2 A, fast recovery speed classification, and 5 µA reverse leakage at 1000 V. Both parts use identical SOD-123H surface mount packages and operate across -55°C to 150°C. No circuit modifications are required.

Q: Why does RS1MFP have "Not For New Designs" status while S1MLS RVG is Active?

A: Product status reflects manufacturer lifecycle management. S1MLS RVG is in active production with full manufacturer support. RS1MFP is in end-of-life phase, meaning onsemi is discontinuing this part number. For new product development, S1MLS RVG ensures long-term supply availability. RS1MFP remains available for legacy system support and maintenance applications.

Q: What is the significance of AEC-Q101 qualification on RS1MFP?

A: AEC-Q101 is an automotive industry qualification standard. RS1MFP meets automotive-grade reliability requirements, making it suitable for automotive applications. S1MLS RVG does not specify this qualification. If automotive qualification is a design requirement, RS1MFP is the appropriate choice.

Q: Are there package compatibility concerns between these parts?

A: No. Both S1MLS RVG and RS1MFP use SOD-123H surface mount packages with identical pinouts, footprints, and soldering requirements. They are mechanically and electrically interchangeable at the PCB assembly level.

Q: What is the difference between the specified reverse recovery time for RS1MFP and the unspecified value for S1MLS RVG?

A: RS1MFP specifies reverse recovery time (trr) of 300 ns. S1MLS RVG does not provide this specification but is classified as Fast Recovery with ≤ 500ns for currents > 200mA. The RS1MFP specification of 300 ns falls within this fast recovery classification. Both parts meet the same speed performance category.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both S1MLS RVG and RS1MFP operate across -55°C to 150°C junction temperature range, supporting high-temperature circuit environments. MSL 1 (Unlimited) rating indicates no moisture sensitivity restrictions during storage or assembly.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Both carry ECCN EAR99 classification and HTSUS code 8541.10.0080. Both are classified as MSL 1 (Unlimited) for moisture sensitivity.