SS24 Alternative / Equivalent / Replacement

YINT Electronics — Schottky Diode, 2A 40V, SOD-123FL

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1. Introduction

The SS24 is a 2A 40V Schottky barrier rectifier diode in the SOD-123FL surface-mount package. It delivers low forward voltage drop and fast switching for power supply and DC-DC converter applications. The device has a forward voltage of 0.55V max and a peak surge current rating of 50A.

The SS24 is an industry standard Schottky diode used across consumer electronics, telecom equipment, and industrial power systems. YINT Electronics manufactures the SS24 as a fully compatible replacement in the SOD-123FL package. The device supports high-frequency switching with low power loss and minimal reverse recovery.

Engineers looking for an SS24 replacement or SS24 equivalent can specify the YINT SS24 as a direct drop-in alternative. It offers the same 40V reverse voltage, 2A forward current, and 50A surge rating with identical SOD-123FL footprint for layout compatibility.

2. Product Overview

The SS24 belongs to the SSxx series of Schottky barrier rectifiers widely used in low-voltage, high-frequency power conversion. Schottky diodes use a metal-semiconductor junction for lower forward voltage drop compared to standard PN-junction diodes. This makes them ideal for output rectification in switching power supplies where efficiency matters.

The SS24 at 2A 40V is suitable for 3.3V, 5V, and 12V output rails in DC-DC converters, flyback power supplies, and reverse polarity protection. The 0.55V forward drop at 2A reduces conduction losses versus a standard 1N400x series diode. The 50A peak surge current provides margin for startup, short-circuit, and transient conditions.

YINT produces the full SSxx series from SS12 through SS310 in SOD-123FL and SMC packages. This range lets customers source all Schottky diode needs from one manufacturing partner. YINT's 19+ years of semiconductor manufacturing experience ensures consistent device performance, low forward drop, and reliable surge handling across every production lot.

3. Key Features

• Forward Current: 2A — Continuous DC output capability
• Reverse Voltage: 40V — Suitable for 3.3V~12V power rails
• Forward Voltage: 0.55V max — Low conduction losses
• Surge Current: 50A — Robust startup and fault handling
• Fast Switching — Schottky barrier, no reverse recovery
• SOD-123FL Package — Compact SMD, low profile
• Operating Range: -55°C to +150°C — Industrial temperature rating
• RoHS Compliant — Lead-free and environmentally safe

4. Specifications

5. Cross Reference

The SS24 is an industry standard Schottky diode number used across all major manufacturers. YINT's SS24 is a direct drop-in replacement with identical or tighter electrical specifications, ensuring compatibility without PCB redesign. Engineers searching for an SS24 equivalent can confidently choose YINT as a universal cross-reference option.

6. Comparison with Similar Models

Engineers often compare the SS24 with nearby voltage and current variants. The table below shows key differences to help select the right SS24 equivalent for each design.

The SS24 offers the best balance of 2A forward current and 40V blocking for 5V and 12V output rectification. For lower voltage rails (3.3V), the SS22 (20V) provides adequate margin at lower cost. For higher voltage requirements, the SS26 (60V) adds margin at a slightly higher forward drop. The SK24 offers the same specs in a larger SMA package. Choose the YINT SS24 for a compact, cost-effective Schottky solution with proven reliability and short lead times.

7. Applications

• DC-DC converter output rectification in power modules
• Flyback power supply secondary-side rectifier
• Reverse polarity protection in portable electronics
• Freewheeling diode in buck and boost converters
• OR-ing diode in redundant power supply systems
• Solar-powered device low-loss rectification
• LED driver output rectifier stage
• Battery charger output isolation diode
• Load switch and power path protection
• Telecom equipment intermediate bus rectification

8. Why Choose YINT

• 19+ years of manufacturing expertise in Schottky rectifiers and power semiconductors since 2006
• 40+ patents and certifications with robust process control per MIL-STD and JEDEC standards
• Global sales network serving North America, Europe, Asia, and Latin America with responsive support
• Full SSxx series from 1A to 3A and 20V to 100V for one-stop Schottky sourcing
• Direct OEM replacement — pin-to-pin compatible with SS24 from all major brands
• Engineering team available for application assistance and cross-reference verification
• Free samples for testing and qualification upon request
• Direct manufacturer pricing with volume discounts available

9. Ordering Information

10. FAQ

Q1: Is YINT SS24 a direct replacement for ON Semiconductor or Vishay SS24?
A: Yes. The YINT SS24 has identical electrical specs and SOD-123FL package dimensions. It drops in without any PCB redesign.

Q2: What is the forward voltage drop of SS24 at 2A?
A: 0.55V maximum at 2A forward current. This is significantly lower than standard rectifier diodes, improving efficiency.

Q3: What is the peak surge current rating of SS24?
A: 50A for an 8.3ms half-sine waveform. This covers startup inrush and output short-circuit conditions.

Q4: Can SS24 be used for 24V output rectification?
A: Yes, provided the peak reverse voltage does not exceed 40V. For higher voltage outputs, use SS26 (60V) or SS210 (100V).

Q5: Is SS24 suitable for high-frequency switching?
A: Yes. As a Schottky diode, the SS24 has near-zero reverse recovery time, making it ideal for 100kHz+ switching frequencies.

Q6: What is the difference between SS24 and SK24?
A: Both have the same 2A 40V rating. The SS24 uses SOD-123FL package while the SK24 uses SMA. Footprints are different.

11. Conclusion

YINT Electronics' SS24 is a reliable, high-performance replacement for industry-standard Schottky diodes from ON Semiconductor, Vishay, Diodes Incorporated, and other major brands. It delivers 2A forward current and 40V blocking with low 0.55V forward drop in a compact SOD-123FL package for DC-DC converters, power supplies, and polarity protection applications.

Contact YINT Electronics at global@yint.com.cn for datasheets, samples, or pricing. Our engineering team is ready to assist with cross-references and application support.