5PCS SS110 SB110 SMA SMD DIODE

🔹 5PCS SS110 / SB110 – 1A 100V Schottky Barrier Rectifier Diode (SMA/DO-214AC)

A surface-mount Schottky diode offering a higher voltage rating (100V) while maintaining the low forward voltage and fast switching advantages of Schottky technology. The SS110 is ideal for efficient rectification in higher-voltage, moderate-power applications where switching losses and heat generation need to be minimized.

✅ Specifications:

• Part Number: SS110 (Also marketed as SB110)

• Type: Schottky Barrier Rectifier Diode

• Max Repetitive Reverse Voltage (VRRM): 100V

• Max Average Forward Rectified Current (IO): 1A

• Peak Forward Surge Current (IFSM): 30A (8.3ms single half-sine wave)

• Forward Voltage (VF): ~0.75V (Max at 1A)

• Reverse Recovery Time (trr): Negligible (Schottky Characteristic)

• Package: SMA / DO-214AC (Surface Mount)

• Mounting Type: SMD (Surface Mount Device)

• Operating Junction Temperature: -65°C to +150°C

• Marking: SS110 printed on diode body

• Quantity: 5 pieces

⚙️ Key Features:

• High Voltage Schottky: The 100V rating bridges the gap between standard low-voltage Schottky diodes and ultrafast silicon diodes, useful for 48V, 60V, and 72V systems.

• Low Forward Voltage: Lower than equivalent silicon fast recovery diodes, reducing conduction losses.

• Fast Switching: Minimal reverse recovery charge makes it suitable for switch-mode power supplies (SMPS) operating at moderate frequencies.

• Compact Power Solution: SMA package provides a good balance of current handling and board space savings.

• Robust Construction: Designed for reliable performance in industrial and automotive environments.

📦 Typical Applications:

• Higher-Voltage DC-DC Converters: Output rectification in 48V, 60V, or 72V step-down (buck) converters for industrial controls, telecom, and e-bike systems.

• Reverse Polarity Protection: In automotive (24V systems), marine, and industrial equipment where transient voltages may be present.

• Freewheeling Diodes: For inductive loads (relays, motors, solenoids) in higher voltage circuits.

• Solar Panel & Battery Systems: As blocking diodes in higher-voltage solar arrays or battery packs.

• AC-DC Adapters: Secondary-side rectification in low-power off-line flyback converters (requires careful design for voltage spikes).

🔧 Polarity & Mounting Notes:

• Polarity Identification: On the SMA package, the cathode is marked with a white line or stripe on one end. The body marking “SS110” is typically read from the cathode end.

• PCB Footprint: Requires a standard SMA (DO-214AC) land pattern.

• Thermal Management: For continuous 1A operation, ensure adequate PCB copper area is connected to the diode pads for heatsinking. Power dissipation is approximately P = Vf * I ≈ 0.75V * 1A = 0.75W.

⚠️ Important Design Considerations:

• Forward Voltage Trade-off: Higher voltage Schottky diodes have a higher Vf than their lower voltage counterparts (e.g., SS14 has ~0.45V vs. SS110 ~0.75V). This is a key design trade-off for voltage selection.

• Voltage Margin: For reliable operation in 48V systems, a 100V rating provides a good safety margin. For 72V systems, consider a 150V or 200V Schottky.

• Reverse Leakage: As with all Schottky diodes, reverse leakage is higher than silicon PN diodes and increases with temperature and applied reverse voltage.

• Switching Frequency: While fast, at very high frequencies (e.g., >500 kHz), parasitic capacitance may become a limiting factor compared to specialized ultrafast diodes.

• Surge and Transients: In applications with high voltage transients (e.g., automotive load dump), additional TVS protection may be required even with a 100V-rated diode.