SS24L RFG Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS24L RFG is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 40 V DC reverse voltage and 2 A average rectified current in a Sub SMA surface mount package. This component is designed for fast recovery applications requiring switching speeds of 500 nanoseconds or less at currents exceeding 200 mA. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

SS24L RFG

Taiwan Semiconductor CorporationIn Stock: 1161SS24L RFG Datasheet

Current PartRFQ

SS1FL4HM3/H

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS24L RFG is determined by electrical and mechanical parameter compatibility within the Schottky diode rectifier category. The primary substitution criteria are:

Electrical Compatibility Requirements:

• Voltage - DC Reverse (Vr) rating must equal or exceed 40 V
• Current - Average Rectified (Io) rating must equal or exceed 2 A
• Voltage - Forward (Vf) must not exceed 500 mV at rated current
• Fast recovery speed characteristic (≤ 500 ns, > 200 mA) must be maintained
• Reverse leakage current must not exceed 400 µA @ 40 V

Mechanical Compatibility Requirements:

• Package / Case must be DO-219AB (Sub SMA / SMF form factor)
• Mounting type must be Surface Mount
• Operating temperature range must encompass -55°C to 150°C junction temperature

Compliance Requirements:

• RoHS3 compliance status must be maintained
• Moisture Sensitivity Level (MSL) must be 1 (Unlimited) or equivalent

Substitute parts meeting all electrical, mechanical, and compliance parameters are considered functionally equivalent for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

SS1FL4HM3/H Substitution Considerations:

The SS1FL4HM3/H manufactured by Vishay General Semiconductor - Diodes Division shares identical voltage rating (40 V), package form factor (DO-219AB), mounting type (Surface Mount), operating temperature range (-55 to 150°C), and fast recovery speed characteristics with the SS24L RFG. Both components maintain ROHS3 compliance and MSL 1 rating.

The primary electrical difference is the average rectified current rating: the SS1FL4HM3/H is rated for 1 A versus the SS24L RFG's 2 A rating. This substitution is applicable only in applications where the circuit current requirement does not exceed 1 A. The SS1FL4HM3/H exhibits superior reverse leakage characteristics (200 µA versus 400 µA at 40 V), which may provide operational advantages in low-power or high-impedance circuit configurations.

The SS1FL4HM3/H carries automotive-grade qualification (AEC-Q101) and belongs to the eSMP® series, indicating enhanced reliability and traceability for automotive and industrial applications. This component is suitable for direct replacement in applications operating at or below 1 A average rectified current.

Frequently Asked Questions (FAQ)

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

A: The SS1FL4HM3/H is electrically and mechanically compatible with the SS24L RFG only in applications where the average rectified current does not exceed 1 A. If the circuit requires 2 A operation, the SS1FL4HM3/H is not suitable due to its lower current rating.

Q: Are the DO-219AB and Sub SMA packages identical?

A: Both designations refer to the same physical package form factor. DO-219AB is the standardized case designation, while Sub SMA is a supplier-specific descriptor. These terms are interchangeable for the SS24L RFG and SS1FL4HM3/H.

Q: What is the significance of the AEC-Q101 qualification on the SS1FL4HM3/H?

A: AEC-Q101 is an automotive electronics qualification standard. The SS1FL4HM3/H meets this qualification, indicating it has undergone rigorous testing for automotive applications. The SS24L RFG does not list this qualification in the provided specifications.

Q: Does the lower reverse leakage current of the SS1FL4HM3/H provide a performance advantage?

A: Lower reverse leakage current (200 µA versus 400 µA at 40 V) reduces parasitic current draw and heat generation. This characteristic may provide operational benefits in precision analog circuits, high-impedance applications, or low-power designs, but is not a requirement for standard rectification applications.

Q: Are both components RoHS3 compliant?

A: Yes, both the SS24L RFG and SS1FL4HM3/H are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, indicating equivalent environmental and handling requirements.

Q: What is the difference between the eSMP® series designation and the standard SS24 base product number?

A: The eSMP® series is a Vishay product line designation indicating enhanced specifications and automotive qualification. The SS24 base product number refers to the core Schottky diode design. These are manufacturer-specific naming conventions and do not affect electrical compatibility.