SS220 Alternative / Equivalent / Replacement

YINT Electronics is a professional manufacturer of Schottky barrier rectifier diodes with over 19 years of manufacturing experience. Our SS220 series is a high-performance, fully compatible alternative to industry-standard SS220 Schottky diodes. Available in SMA (DO-214AC) and SMB (DO-214AA) packages, the SS220 is designed to meet the demanding requirements of modern power electronics applications.

What Is SS220?

The SS220 is a 2A, 200V Schottky barrier rectifier diode designed for low-voltage, high-frequency rectification applications. Schottky diodes are known for their fast switching speed and low forward voltage drop compared to standard PN junction diodes, making them ideal for power conversion circuits where efficiency is critical.

The SS220 is widely recognized as an industry-standard part number, with cross-compatible versions manufactured by leading brands worldwide. YINT Electronics offers the SS220 as a direct, cost-effective replacement without compromising on performance or reliability.

Key Features

• Low forward voltage drop: VF ≤ 0.95 — reduces power dissipation and improves thermal performance
• Fast switching speed: Optimized for high-frequency operation up to several hundred kHz
• High surge current capability: IFSM = 80 — withstands startup and transient overload conditions
• Wide operating temperature range: TJ = -65 to +125 — suitable for industrial and automotive environments
• Two package options: SMA (DO-214AC) and SMB (DO-214AA) — flexible PCB layout options
• Low reverse leakage: IR ≤ 0.5 at 25°C — minimizes standby power loss
• RoHS compliant: Lead-free and environmentally friendly
• Active status: Current production, no obsolescence risk

Electrical Parameters

SS220-SMA (DO-214AC)

SS220-SMB (DO-214AA)

Cross Reference & Compatible Models

YINT Electronics' SS220 series is electrically and mechanically compatible with SS220 diodes from Lite-On, Vishay, ON Semiconductor, Diodes Incorporated, Good-Ark, Taiwan Semiconductor, and Micro Commercial Components (MCC). Engineers can use YINT SS220-SMA (DO-214AC) and SS220-SMB (DO-214AA) as drop-in replacements.

Package Dimensions

SMA (DO-214AC) Package

• Body Length: 4.60 mm (typical)
• Body Width: 2.83 mm (typical)
• Body Height: 2.10 mm (typical)
• Terminal Pitch: 4.05 mm (typical)
• Recommended PCB pad spacing: 4.50 mm

SMB (DO-214AA) Package

• Body Length: 5.60 mm (typical)
• Body Width: 3.60 mm (typical)
• Body Height: 2.25 mm (typical)
• Terminal Pitch: 4.75 mm (typical)
• Recommended PCB pad spacing: 5.00 mm

Application Circuits

1. Switching Power Supply Output Rectification

In flyback and forward converter topologies, the SS220 serves as the output rectifier diode. Its low VF reduces conduction losses, while its fast recovery minimizes switching losses at high frequencies.

2. DC-DC Converter OR-ing Diode

In redundant power supply systems, the SS220 can be used as an OR-ing diode to combine multiple power sources. Its low forward voltage drop minimizes voltage loss and improves overall system efficiency.

3. Reverse Polarity Protection

The SS220 provides robust reverse polarity protection for DC input circuits. The diode is placed in series with the power input, conducting only when the supply voltage is applied with the correct polarity.

4. Freewheeling Diode in Inductive Load Circuits

When driving relays, solenoids, or motors, the SS220 serves as a freewheeling diode to recirculate the inductive kickback current, protecting switching transistors from voltage spikes.

Applications

• Switching Power Supplies — Secondary side rectification in flyback, forward, and half-bridge converters
• DC-DC Converters — Output rectification, OR-ing diode for redundant power systems
• Polarity Protection — Reverse battery and reverse supply protection circuits
• LED Lighting Drivers — Rectification in offline and DC-DC LED driver circuits
• Motor Drive Circuits — Freewheeling diode in H-bridge and relay driver circuits
• Automotive Electronics — Low-voltage power rail protection in 12V and 24V automotive systems
• Battery Management Systems — Charging path rectification and protection
• Telecom and Networking Equipment — -48V power supply protection and OR-ing

Why Choose YINT for SS220?

• 19+ Years of Manufacturing Expertise — Founded in 2006, YINT Electronics specializes in circuit protection and power semiconductor devices
• Global Sales Network — Products shipped to North America, Europe, Asia, and Latin America
• Direct Replacement — Pin-to-pin compatible with industry-standard SS220 diodes
• Two Package Options — SMA (DO-214AC) and SMB (DO-214AA) for design flexibility
• Active Product Status — Current production, no end-of-life concerns
• Technical Support — Engineering team available for application assistance and cross-reference verification
• Sample Support — Samples available for testing and qualification

Ordering Information

FAQ

Q1: Is the YINT SS220 a direct replacement for other brands' SS220?
A: Yes. The YINT SS220 series offers identical electrical parameters (200V / 2.0A) and uses the same industry-standard package dimensions (SMA DO-214AC and SMB DO-214AA). It is a drop-in replacement for Lite-On, Vishay, ON Semiconductor, Diodes Inc., Good-Ark, Taiwan Semiconductor, and MCC SS220 diodes.

Q2: What is the difference between SS220-SMA and SS220-SMB?
A: Only the package size differs. SMA (DO-214AC) has a smaller body (4.60 × 2.83 mm) and is packed at 5,000 pcs/reel. SMB (DO-214AA) has a larger body (5.60 × 3.60 mm) and is packed at 3,000 pcs/reel. The electrical parameters are identical.

Q3: What is the forward voltage of SS220?
A: The maximum forward voltage is 0.95V at 2A forward current. Typical values are lower at room temperature, around 0.75V to 0.85V depending on operating conditions.

Q4: Can I use SS220 in a 12V or 24V system?
A: Yes. The SS220 is rated for 200V reverse voltage, making it suitable for 12V, 24V, 48V, and other low-voltage DC systems with ample safety margin.

Q5: What is the maximum operating frequency for SS220?
A: As a Schottky barrier diode, the SS220 can operate effectively at switching frequencies up to several hundred kHz. The fast recovery characteristic of Schottky diodes makes them suitable for high-frequency switching power supplies.

Q6: How does the SS220 compare with the SS320?
A: Both parts are rated at 200V. The SS220 is rated at 2.0A, while the SS320 is rated at 3.0A with a higher surge current of 100A. The SS220 is suitable for 2A applications; for higher current requirements, consider the SS320.

Q7: What is the storage temperature range?
A: The storage temperature range is -65°C to +175°C, which is wider than the operating junction temperature range of -65°C to +125°C.

Q8: Does YINT provide free samples for testing?
A: Yes. Sample support is available depending on project requirements. Contact YINT Electronics at global@yint.com.cn with your application details for sample requests.

Q9: What is the reverse leakage current at high temperature?
A: The maximum reverse leakage current is 0.5mA at 25°C and 5.0mA at 100°C. Schottky diodes inherently have higher leakage at elevated temperatures compared to PN junction diodes, which should be considered in high-temperature designs.

Q10: Is the SS220 AEC-Q101 qualified for automotive use?
A: The standard SS220 is not AEC-Q101 qualified. For automotive-grade requirements, please contact YINT for recommended alternatives.

Conclusion

YINT Electronics' SS220 Schottky barrier diode offers a reliable, high-performance, and cost-effective alternative to industry-standard SS220 diodes. Available in both SMA (DO-214AC) and SMB (DO-214AA) packages, the SS220 delivers the same 200V / 2.0A electrical performance that design engineers expect, with the added benefits of stable supply, competitive pricing, and responsive technical support.

Whether you are looking for a direct replacement for an existing design or evaluating options for a new power supply project, the YINT SS220 provides the performance and reliability your application requires.