SS24L MHG Equivalent & Substitute Parts

Part Overview

The SS24L MHG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 40 V DC reverse voltage and 2 A average rectified current in a surface mount Sub SMA package (DO-219AB). This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when alternative manufacturers offer Schottky diodes with compatible electrical ratings and mechanical packaging that satisfy the same circuit requirements. Substitution becomes necessary due to supply availability, lead time considerations, or design flexibility across multiple qualified component sources.

Substiute Parts

SS24L MHG

Taiwan Semiconductor CorporationIn Stock: 765SS24L MHG Datasheet

Current PartRFQ

SL04-HM3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 29634SL04-HM3-18 Datasheet

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SS1FL4HM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 33227SS1FL4HM3/H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS24L MHG is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage rating: 40 V DC reverse voltage (Vr) maximum
• Package type: DO-219AB surface mount configuration
• Technology: Schottky rectifier diode
• Fast recovery speed characteristic (≤ 500 ns, > 200 mA)
• RoHS3 compliance and MSL 1 classification
• Operating temperature range compatibility

Current Rating Consideration: The SS24L MHG is rated for 2 A average rectified current. Substitute parts with lower current ratings (1 A or 1.1 A) are classified as functional equivalents when the application circuit does not require the full 2 A capacity. These substitutes maintain all other critical electrical and mechanical parameters.

The identified substitute parts (SL04-HM3-18 and SS1FL4HM3/H) satisfy the voltage, package, technology, and compliance requirements. Both are manufactured by Vishay General Semiconductor - Diodes Division and are available in DO-219AB surface mount packaging with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

SS1FL4HM3/H Selection: The SS1FL4HM3/H maintains identical forward voltage characteristics (500 mV @ rated current) and operating temperature range (-55 to 150 °C) as the SS24L MHG. This substitute is suitable for applications where the circuit current requirement does not exceed 1 A. The part carries AEC-Q101 automotive qualification and is available in high inventory (33,182 pieces).

SL04-HM3-18 Selection: The SL04-HM3-18 provides the highest current capacity among substitutes at 1.1 A, approaching the original 2 A rating. This part is qualified to AEC-Q101 automotive standards and supports a maximum junction temperature of 175 °C, exceeding the SS24L MHG specification. The SL04-HM3-18 is suitable for applications requiring current levels between 1 A and 1.1 A. Inventory availability is substantial (29,561 pieces).

Both substitute parts maintain full RoHS3 compliance, MSL 1 classification, and DO-219AB surface mount packaging. Selection between substitutes depends on circuit current requirements and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the SS1FL4HM3/H replace the SS24L MHG in all applications?

A: The SS1FL4HM3/H is a functional equivalent when the circuit current requirement does not exceed 1 A. Both parts share identical 40 V reverse voltage rating, DO-219AB package, fast recovery speed characteristic, and operating temperature range. If the application requires the full 2 A capacity of the SS24L MHG, the SS1FL4HM3/H is not suitable.

Q: What is the difference between the SL04-HM3-18 and SS1FL4HM3/H?

A: The primary differences are current rating (1.1 A versus 1 A) and maximum junction temperature (175 °C versus 150 °C). The SL04-HM3-18 has lower reverse leakage current (20 µA versus 200 µA) and slightly higher forward voltage (540 mV @ 1.1 A versus 500 mV @ 1 A). Both are AEC-Q101 qualified and suitable for automotive applications.

Q: Are all three parts pin-compatible?

A: Yes. The SS24L MHG, SL04-HM3-18, and SS1FL4HM3/H all use the DO-219AB surface mount package configuration, ensuring mechanical and electrical pin compatibility on PCB layouts.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. All three parts are RoHS3 compliant, carry MSL 1 (unlimited) moisture sensitivity level, and are REACH unaffected. The Vishay substitutes (SL04-HM3-18 and SS1FL4HM3/H) additionally carry AEC-Q101 automotive qualification.

Q: What is the impact of lower reverse leakage current in the SL04-HM3-18?

A: Lower reverse leakage current (20 µA versus 400 µA in the SS24L MHG) indicates reduced parasitic current flow when the diode is reverse-biased. This characteristic is beneficial in low-power or precision applications where leakage current contributes to overall circuit power consumption or measurement accuracy.

Q: Can I use the SL04-HM3-18 if my application requires 2 A?

A: No. The SL04-HM3-18 is rated for 1.1 A average rectified current. Using it in a 2 A application exceeds the component's current specification and may result in thermal stress, reduced reliability, or component failure.