Diodes
Products (28)
SR2020CT - 20A 20V Dual Schottky Rectifier | Galaxy Semiconductor
The Galaxy Semiconductor SR2020CT is a dual Schottky barrier rectifier rated for 20 A forward current per leg and 20 V reverse voltage, housed in a through-hole TO-220AB package with a metal tab for heatsink mounting. It is manufactured by multiple qualified sources including UPM, Daco Semiconductor, Semtech Electronics, and Galaxy Semi-Conductor Holdings under the same SR2020CT nomenclature and footprint. A Schottky barrier rectifier is a type of power diode that uses a metal-semiconductor junction instead of a P-N junction. Because conduction is by majority carriers, Schottky diodes exhibit a lower forward voltage drop and essentially zero reverse recovery time compared with standard silicon rectifiers, making them the preferred output rectifier stage in switching power supplies, DC-DC converters, and battery-charging circuits where efficiency at low output voltages matters most. Key features of the SR2020CT include epitaxial construction with a guard ring for transient protection, majority-carrier conduction for fast switching, and an Underwriters Laboratory flammability classification 94V-0 molded plastic package. The dual (center-tap) configuration places two diodes in one TO-220AB outline, saving board space in push-pull and forward converter secondary sides. Reverse voltage spans 20 to 60 V across the family (SR2020CT through SR2060CT) at a common 20 A forward current rating. The guard-ring terminated metal-semiconductor junction suppresses avalanche and surface leakage, allowing conservative derating in inductive-load environments. Because reverse recovery charge is negligible, switching losses at 50-100 kHz converter frequencies remain low, and thermal design is dominated by conduction loss, calculated as Vf multiplied by average load current per leg. Typical applications include low-voltage, high-frequency inverters, output rectification in switching-mode power supplies, freewheeling diodes in synchronous buck topologies, reverse-polarity protection in automotive and solar battery systems, and secondary-side rectification in adapter and charger designs. Design consideration: at 20 A the conduction loss of roughly 10 W or more requires a heatsink or generous PCB copper with thermal grease; verify the forward-voltage-versus-current curve at your actual junction temperature. This page synthesizes verified datasheet ratings, drop-in family alternatives, pinout, and practical design notes not consolidated in any single manufacturer datasheet.
STTH102AY - 1A 200V Ultrafast Rectifier | STMicroelectronics | SMA
The STTH102AY is an ultrafast high-voltage rectifier diode from STMicroelectronics, designed for high-frequency power conversion applications. It delivers a forward current of 1A with a repetitive peak reverse voltage of 200V, housed in a compact SMA (DO-214AC) surface-mount package. The device features an ultrafast reverse recovery time of 25 ns, making it ideal for switching power supplies, freewheeling diodes, and snubber circuits. A rectifier diode is a semiconductor device that allows current to flow in only one direction, converting alternating current (AC) to direct current (DC). Ultrafast rectifiers are a subclass of power diodes optimized for high-speed switching, with reverse recovery times typically below 50 ns. They are essential in switch-mode power supplies (SMPS) and DC-DC converters where efficiency and reduced switching losses are critical. The STTH102AY belongs to the STTH family of ultrafast diodes, which are known for their low forward voltage drop and fast recovery characteristics. Key features of the STTH102AY include a low forward voltage drop of 0.85V at 1A, a maximum junction temperature of 175°C, and a repetitive peak reverse voltage of 200V. The device also offers a non-repetitive peak forward surge current of 30A, ensuring robustness during transient conditions. Its SMA package provides excellent thermal performance with a thermal resistance of 15°C/W, enabling efficient heat dissipation in compact designs. The STTH102AY utilizes planar technology, which ensures stable and reliable performance across its operating range. The ultrafast recovery time minimizes reverse recovery losses, improving overall system efficiency in high-frequency circuits. The device is AEC-Q101 qualified, making it suitable for automotive applications where reliability under harsh conditions is paramount. Typical applications include switch-mode power supplies, freewheeling diodes in inductive loads, snubber circuits, and output rectification in DC-DC converters. Its fast recovery and low forward voltage make it particularly effective in power factor correction (PFC) circuits and LED lighting drivers. When designing with the STTH102AY, ensure adequate PCB copper area for thermal management, especially at high forward currents. The device's fast recovery characteristics require careful layout to minimize parasitic inductance, which can cause voltage spikes during switching transitions.
UF3007 - 3A 800V Ultra-Fast Rectifier Diode | Diodes Inc
The Diodes Incorporated UF3007 is a 3.0 A ultra-fast rectifier diode with an 800 V repetitive peak reverse voltage, a 1.7 V maximum forward voltage drop, and a 75 ns reverse recovery time, housed in a DO-201AD (DO-27 style) axial-lead through-hole package. An ultra-fast rectifier is a power semiconductor diode engineered for very short reverse recovery time (trr), which is the interval during which the diode continues to conduct after the applied voltage reverses. Within the power-conversion component hierarchy, the ultra-fast rectifier is a member of the rectifier diode family, which in turn belongs to discrete semiconductors and power management building blocks. Fast recovery matters because slow diodes dissipate significant switching losses in high-frequency converters. Key features of the UF3007 include a diffused-junction construction optimized for high switching efficiency, a surge overload rating of up to 150 A peak (non-repetitive), low reverse leakage current, and a plastic body carrying a UL flammability classification of 94V-0. High current capability combined with low forward voltage drop reduces conduction losses in the output stage. Technical analysis: the 75 ns trr class places the UF3007 well below standard-recovery diodes (microseconds) and suits switching frequencies commonly found in flyback and forward converters. According to the manufacturer datasheet, for capacitive loads the output current should be derated by 20% relative to the resistive-load rating. Storage temperature spans -65C to +175C per typical DO-201AD ratings, enabling rugged industrial designs. Typical applications include secondary-side output rectification in AC-DC switch-mode power supplies, free-wheeling and snubber circuits in motor drives, DC-DC converter output stages, and reverse-polarity protection in industrial equipment. Design consideration: keep lead length short and verify average forward current derating at elevated ambient temperatures, since DO-201AD axial packages rely on lead conduction for heat extraction. This page synthesizes distributor cross-reference data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
V6 (DZ23C4V3-V) - 4.3V SOT-23 Dual Zener Diode | Vishay
The Vishay DZ23C4V3-V, marked V6 on the SOT-23 package surface, is a small-signal dual Zener diode with a nominal 4.3 V Zener voltage, supplied in a compact surface-mount SOT-23 package. A Zener diode is a silicon diode designed to operate in reverse breakdown, where voltage across the device remains nearly constant over a wide range of reverse current. In the voltage-regulator hierarchy, Zeners sit within the broader family of voltage references and clamping devices in power management and circuit protection, providing simple, low-cost voltage clipping, level shifting, and reference duties where precision bandgap references are not required. Key features of the DZ23C series include dual-diode integration in one SOT-23 footprint, which saves board area versus two discrete SOD-123 Zeners, tight tolerance construction, and suitability for general-purpose voltage clamping and bias tasks. The dual configuration supports common-anode, common-cathode, or series wiring depending on the circuit need. Vishay manufactures the DZ23 family using planar silicon technology optimized for stable reverse-breakdown characteristics over temperature and life. The SOT-23 package offers a reflow-solderable, JEDEC-standard outline compatible with high-volume pick-and-place assembly. Typical applications include input protection clamps on microcontroller GPIO lines, voltage offset generation in analog bias networks, and low-cost rail clipping on sensor and communication interfaces. Designers should verify the datasheet tolerance and power rating for their operating conditions and derate dissipation at elevated ambient temperatures per the manufacturer datasheet. This page synthesizes distributor and cross-reference data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.