The SS34 is an industry‑standard single‑ended surface‑mount Schottky barrier rectifier diode. Featuring extremely low power loss and high efficiency, it ranks among the most widely‑used general‑purpose Schottky diodes for electronic R&D, mass‑production stock preparation and after‑sales maintenance.
Key Specifications
DC Reverse Voltage VR = 40 V; repetitive peak reverse voltage VRRM equals the same value.
Forward Rectified Current IF: 3 A max.
Peak Surge Current IFSM = 80 A, offering excellent instantaneous withstand capability for reliable operation.
Forward Voltage Drop VF: 0.55 V max for ultra‑low conduction loss.
Reverse Leakage Current IR = 0.1 mA. Low static standby power consumption. Notably, this value is maintained from 25 °C up to 100 °C for superior stability.
Diode Capacitance CD: 300 pF max.
Product Advantages
Notable Energy‑Saving PerformanceThis is the core strength of the SS34. Its maximum forward voltage drop of only 0.55 V is far lower than the 0.7‑1.1 V of conventional diodes. At 3 A operating current, power dissipation is merely 1.5 W, greatly improving power‑conversion efficiency.
Nanosecond‑Scale Reverse Recovery for High‑Frequency CompatibilityExtremely fast switching speed with reverse‑recovery time trr below 10 nanoseconds. Well‑suited for high‑frequency circuits.
High Surge‑Current Withstand for High ReliabilityCapable of handling peak surge current up to 80 A. Ensures stability and reliability against transient high‑current surges such as power‑supply hot‑plugging and surge pulses.
Compliant Materials and Production‑Friendly PackageHoused in SMC surface‑mount package with dimensions 6.86 mm × 6.11 mm × 2.34 mm. RoHS‑compliant, lead‑free, halogen‑free and antimony‑free green component. AEC‑Q101 qualified.
Wide Operating‑Temperature Range for Broad AdaptabilityTypical operating junction temperature range: ‑65 °C ~ +150 °C, enabling stable performance under harsh operating conditions.
Typical Applications
Small‑size switching power supplies & chargers: secondary rectification circuits for phone chargers, power banks, set‑top‑box power supplies and auxiliary power supplies for notebooks.
DC‑DC power modules: buck‑boost power boards, portable energy‑storage modules, free‑wheeling diodes for low‑power desktop power supplies.
LED lighting drivers: rectification units for light strips, bulb lamps, panel lights and low‑power industrial‑grade lamps.
Small‑scale automotive electronics: power rectification and reverse‑polarity protection for car USB chargers, dashcams and car audio‑video equipment.
Consumer digital hardware: internal power‑management circuits for Bluetooth speakers, robot vacuum cleaners, humidifiers and handheld small home appliances.
Maintenance, DIY & industrial‑control projects: replacement for electronic‑equipment repair, maker open‑source projects and low‑power protection circuits for instruments and meters.
