SS1F4-M3/I Equivalent & Substitute Parts

Part Overview

The SS1F4-M3/I is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40 V DC reverse voltage and 1 A average rectified current in a DO-219AB surface mount package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to address supply chain requirements, packaging format preferences, and application-specific performance needs while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

SS1F4-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 865SS1F4-M3/I Datasheet

Current PartRFQ

SS1F4-M3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 36149SS1F4-M3/H Datasheet

Parametric EquivalentRFQ

SS1F4HM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 21474SS1F4HM3/H Datasheet

Parametric EquivalentRFQ

SS24L RVG

Taiwan Semiconductor CorporationIn Stock: 2072SS24L RVG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS1F4-M3/I is determined by electrical parameter equivalence and mechanical compatibility. The critical parameters governing substitution are:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 1 A minimum
• Technology: Schottky
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters:

• Package / Case: DO-219AB
• Mounting Type: Surface Mount

Compliance Parameters:

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

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical ratings and package specifications but differing only in packaging format (Tape & Reel versus Cut Tape) or automotive qualification grade. These parts are direct functional replacements.

Manufacturer Recommended Substitute: Parts with higher current ratings or different operating temperature ranges that maintain the 40 V reverse voltage specification and DO-219AB package format. These parts provide enhanced performance characteristics for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

SS1F4-M3/H (Parametric Equivalent - Cut Tape Format)

This part is a direct parametric equivalent to the SS1F4-M3/I with identical electrical specifications and maximum junction temperature. The only difference is the packaging format: Cut Tape (CT) instead of Tape & Reel (TR). Selection of this part is appropriate when Cut Tape packaging is preferred for assembly operations or when Tape & Reel inventory is unavailable. Both parts maintain ROHS3 compliance and MSL 1 rating.

SS1F4HM3/H (Parametric Equivalent - Automotive Grade)

This part is a direct parametric equivalent with identical electrical specifications and maximum junction temperature. The distinguishing feature is AEC-Q101 automotive qualification, indicating this part meets automotive industry reliability and quality standards. Selection of this part is appropriate for applications requiring automotive-grade components or when automotive supply chain traceability is mandated. Packaging format is Tape & Reel (TR), matching the original SS1F4-M3/I.

SS24L RVG (Manufacturer Recommended Substitute - Enhanced Current Rating)

This part is a manufacturer-recommended substitute with the same 40 V reverse voltage rating and DO-219AB package format. The SS24L RVG provides double the average rectified current (2 A versus 1 A) and lower forward voltage drop (500 mV @ 2 A versus 520 mV @ 1 A). The operating temperature range is -55°C to 125°C, with maximum junction temperature of 125°C, which is lower than the original part's 175°C maximum. Reverse leakage current is higher at 400 µA @ 40 V. Selection of this part is appropriate for applications requiring higher current capacity or improved forward voltage characteristics, provided the lower maximum junction temperature is compatible with the thermal environment.

Frequently Asked Questions (FAQ)

Q: Can SS1F4-M3/H be used as a direct replacement for SS1F4-M3/I?

A: Yes. SS1F4-M3/H is a parametric equivalent with identical electrical ratings (40 V, 1 A, 520 mV forward voltage, 175°C maximum junction temperature) and the same DO-219AB package. The only difference is packaging format: Cut Tape instead of Tape & Reel. Both parts are ROHS3 compliant with MSL 1 rating.

Q: What is the advantage of SS1F4HM3/H over SS1F4-M3/I?

A: SS1F4HM3/H provides AEC-Q101 automotive qualification in addition to identical electrical specifications. This qualification indicates compliance with automotive industry reliability and quality standards. Selection is appropriate for automotive applications or when automotive-grade component documentation is required.

Q: When should SS24L RVG be selected instead of SS1F4-M3/I?

A: SS24L RVG is selected when the application requires higher current capacity (2 A versus 1 A) or lower forward voltage drop (500 mV @ 2 A). The 40 V reverse voltage rating and DO-219AB package remain compatible. However, the maximum junction temperature is 125°C, which is lower than the original part's 175°C. Verify that the thermal environment of the application does not exceed this temperature limit.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (SS1F4-M3/H, SS1F4HM3/H, and SS24L RVG) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original SS1F4-M3/I specifications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on a continuous reel suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape segments, typically used for lower-volume assembly or manual placement. Both formats use the same DO-219AB package and are electrically identical.

Q: Can SS24L RVG be used in all applications where SS1F4-M3/I is specified?

A: SS24L RVG maintains the 40 V reverse voltage rating and DO-219AB package, making it mechanically compatible. However, the maximum junction temperature is 125°C compared to 175°C for the original part. Verify that the application's thermal environment does not exceed 125°C. Additionally, the higher reverse leakage current (400 µA @ 40 V versus 150 µA @ 40 V) may affect circuit performance in applications sensitive to leakage current.

Q: Is capacitance a factor in selecting substitute parts?

A: Capacitance is specified for SS1F4-M3/I, SS1F4-M3/H, and SS1F4HM3/H at 85 pF @ 4V, 1MHz. Capacitance is not specified for SS24L RVG. If circuit performance depends on diode capacitance characteristics, SS24L RVG may not be suitable without additional verification.