SS24L RTG Equivalent & Substitute Parts

Part Overview

The SS24L RTG is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the Sub SMA package format. This component operates at a maximum reverse voltage of 40 V with an average rectified current rating of 2 A, featuring fast recovery characteristics suitable for high-frequency switching applications. The part is RoHS3 compliant and carries unlimited moisture sensitivity classification, indicating robust reliability for industrial and commercial deployment.

Equivalent and substitute parts are identified to address component availability, supply chain continuity, and design flexibility while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

SS24L RTG

Taiwan Semiconductor CorporationIn Stock: 1157SS24L RTG Datasheet

Current PartRFQ

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 RTG is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Package / Case: DO-219AB
• Technology: Schottky
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C
• RoHS3 Compliance

Allowable Parameter Variance:

• Current - Average Rectified (Io): Substitute parts must equal or exceed the 2 A rating of the main part
• Voltage - Forward (Vf) (Max): Substitute parts must not exceed 500 mV @ rated current
• Current - Reverse Leakage @ Vr: Substitute parts must not exceed 400 µA @ 40 V
• Speed: Substitute parts must maintain fast recovery characteristics ≤ 500 ns

The SS1FL4HM3/H from Vishay General Semiconductor - Diodes Division meets the mandatory matching parameters. However, the current rating of 1 A is lower than the main part specification of 2 A, which restricts its application scope to circuits requiring maximum 1 A average rectified current.

Parameter Comparison

Engineering Selection Recommendations

SS1FL4HM3/H Substitution Criteria:

The SS1FL4HM3/H is electrically and mechanically compatible with the SS24L RTG for applications where the maximum average rectified current requirement does not exceed 1 A. Both components share identical reverse voltage ratings, package geometry, operating temperature range, and compliance certifications.

The SS1FL4HM3/H carries AEC-Q101 automotive qualification and operates within the eSMP® series designation from Vishay, indicating enhanced reliability characteristics. The reverse leakage current of 200 µA at 40 V is superior to the main part specification of 400 µA, resulting in lower power dissipation in reverse bias conditions.

Selection of the SS1FL4HM3/H is appropriate for:

• Circuits designed for maximum 1 A average rectified current
• Applications requiring automotive-grade component qualification
• Designs benefiting from reduced reverse leakage characteristics
• Supply chain scenarios where the main part is unavailable

The SS1FL4HM3/H is not suitable for direct replacement in circuits requiring the full 2 A current rating of the SS24L RTG without circuit redesign or parallel configuration.

Frequently Asked Questions (FAQ)

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

A: No. The SS1FL4HM3/H has a maximum average rectified current rating of 1 A, compared to 2 A for the SS24L RTG. Substitution is valid only for circuits designed for 1 A or lower current operation. Circuits requiring the full 2 A rating require the original SS24L RTG or an equivalent part with matching 2 A current specification.

Q: Are the package dimensions identical between these parts?

A: Yes. Both the SS24L RTG and SS1FL4HM3/H use the DO-219AB package format, ensuring identical PCB footprint and mounting compatibility for surface mount assembly.

Q: What is the difference in reverse leakage current between these parts?

A: The SS24L RTG specifies 400 µA maximum reverse leakage at 40 V, while the SS1FL4HM3/H specifies 200 µA maximum at the same voltage. The lower leakage of the SS1FL4HM3/H results in reduced power dissipation during reverse bias operation.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the SS24L RTG and SS1FL4HM3/H are RoHS3 compliant and carry unlimited moisture sensitivity classification (MSL 1), suitable for standard industrial and commercial manufacturing processes.

Q: Does the SS1FL4HM3/H have automotive qualification?

A: Yes. The SS1FL4HM3/H carries AEC-Q101 automotive qualification, indicating compliance with automotive reliability and quality standards. The SS24L RTG does not specify automotive qualification in the provided parameters.

Q: What is the forward voltage drop at rated current for each part?

A: Both parts specify 500 mV maximum forward voltage drop at their respective rated currents: 500 mV @ 2 A for the SS24L RTG and 500 mV @ 1 A for the SS1FL4HM3/H. Forward voltage characteristics are equivalent at their rated operating points.

Q: Can these parts be used in parallel to achieve higher current ratings?

A: Parallel operation of Schottky diodes requires careful circuit design to ensure current sharing. The different current ratings and reverse leakage characteristics between these parts make parallel configuration non-standard without additional design considerations.