SS310L-RUG - 3A 100V Schottky Rectifier Sub SMA | Taiwan Semiconductor
Teilenummer: SS310L-RUG ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.42 | $0,42 |
| 10 | $0.4 | $4,00 |
| 100 | $0.38 | $38,00 |
| 500 | $0.37 | $185,00 |
| 1.000 | $0.36 | $360,00 |
SS310L-RUG Übersicht
A Schottky barrier rectifier is a type of power diode that uses a metal-semiconductor junction instead of a conventional P-N junction. This construction yields a lower forward voltage drop and dramatically reduced reverse-recovery charge, making Schottky rectifiers the preferred choice for switching power supplies, DC-DC converters, and reverse-polarity protection where conduction losses and switching losses both matter. Rectifiers form the discrete-semiconductor layer of the broader power management hierarchy, sitting alongside MOSFETs and controller ICs.
Key features include a 100 V reverse voltage rating suitable for 12 V, 24 V, and 48 V rail systems, a 3 A average forward current capability, and low reverse leakage typical of the SS310L series. The surface mount Sub SMA package saves board area versus SMA and SMB alternatives while maintaining solderability through reflow profiles.
Technically, the metal-semiconductor junction of the SS310L switches from forward to reverse conduction with essentially no reverse recovery, which is why it excels in freewheeling, output rectification, and ORing applications at switching frequencies common in modern converters. The operating junction range of -55C to +150C supports industrial and automotive-adjacent environments.
Typical applications include secondary-side rectification in flyback and buck converters, reverse battery and reverse polarity protection, freewheeling diodes for inductive loads, and DC-DC converter output stages in consumer, industrial, and networking equipment.
In design, size the copper pad area for the package thermal resistance and derate forward current at elevated ambient temperature; verify reverse leakage at maximum junction temperature, since Schottky leakage rises exponentially.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für SS310L-RUG – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit SS310L-RUG (gleiche Bauform und Footprint) – abweichend in Configuration, Package.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
SS310L
✅ Drop-In✓ Auf Lager
$0.03 / Stück
Datenblatt ansehen →SS310L-MQG
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SS310L-M2G
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SS310
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SS310L-RUG Grenzwerte & elektrische Eigenschaften
| Diode Type | Schottky Barrier Rectifier |
| Reverse Voltage (VRRM) | 100 V |
| Average Forward Current (IF(AV)) | 3 A |
| Configuration | Single, independent |
| Betriebstemperaturbereich | -55C to +150C |
| Gehäuse | Sub SMA (surface mount) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant (RUG suffix) |
| Packaging Option | Reel (RUG suffix) |
SS310L-RUG Pin-Konfiguration
| Pin 1 | A (Anode) — Anode terminal; current flows from pin 1 to pin 2 in forward conduction |
| Pin 2 | K (Cathode) — Cathode terminal, identified by the polarity band on the package body; connected to the die substrate for heat dissipation |
Typische Anwendungen
SS310L-RUG ist geeignet für 6 Anwendungs: DC-DC Converter Output Rectification, Reverse Polarity Protection, Freewheeling Diode for Inductive Loads, ORing and Power Path Input Diodes, Networking and Telecom Equipment Power Supplies, Consumer Appliance and Adapter Power Stages.
DC-DC Converter Output Rectification
The SS310L-RUG fits secondary-side output rectification in flyback and buck converters because its Schottky metal-semiconductor junction switches with essentially no reverse-recovery charge, eliminating the turn-off loss and ringing that a P-N recovery diode would add at typical converter switching frequencies. With a 100 V reverse rating, it covers flyback secondaries derived from 12 V to 48 V inputs, and its 3 A average forward current supports multi-watt output rails. Placed between the transformer secondary and the output capacitor, it trades a modest forward drop for a dramatic reduction in switching loss, improving efficiency by several percentage points versus standard-recovery parts. Verify leakage at maximum junction temperature, since Schottky reverse leakage contributes to standby power in always-on converters.
Empfohlen
Reverse Polarity Protection
For reverse-battery and reverse-input protection on 12 V and 24 V systems, the SS310L-RUG is an efficient series element: its Schottky forward voltage drop is substantially lower than a standard silicon rectifier, so conduction loss and voltage headroom loss are minimized at load currents up to 3 A. The 100 V VRRM rating gives roughly 4x margin over a nominal 24 V bus, tolerating load-dump style transients better than 40 V-class parts. Wired in series with the positive supply input, it blocks reverse current during incorrect connection while adding minimal drop in normal operation. Design consideration: at full 3 A load the forward drop times current determines dissipation, so pad copper area must follow the recommended Sub SMA land pattern to keep junction temperature within the 150C limit.
Empfohlen
Freewheeling Diode for Inductive Loads
Relay coils, solenoids, and small motor windings generate inductive kick when switched off, and the SS310L-RUG serves as a low-loss freewheeling clamp across the load or across a low-side MOSFET. Because the Schottky junction has no stored charge, it begins conducting the coil current immediately at turn-off, clamping the drain or collector voltage spike without the forward-recovery delay seen in P-N diodes. The 3 A rating covers typical relay and solenoid coil currents, and the 100 V rating suits 12 V and 24 V coil systems with generous headroom. Trade-off: Schottky reverse leakage at high coil-side temperatures is higher than a P-N clamp diode, which is acceptable in most relay-drive circuits but should be reviewed in low-leakage timing circuits.
Empfohlen
ORing and Power Path Input Diodes
In dual-input systems that select between an AC adapter and a battery, the SS310L-RUG works as a simple diode-OR element on each input rail. The Schottky low forward drop reduces the voltage penalty that would otherwise erode regulator headroom, and the 3 A rating supports typical 12 V wall-adapter or multi-cell battery inputs. The 100 V class provides robust surge margin when hot-plugging adapters with cable inductance. Unlike ideal-diode MOSFET controllers, a Schottky ORing stage is a single-component, always-reliable solution with no quiescent current, making it attractive for cost-sensitive and standby-sensitive products. The design consideration is power dissipation at full load: multiply forward drop by load current and confirm the Sub SMA pad thermals meet the 150C junction limit.
Empfohlen
Networking and Telecom Equipment Power Supplies
Networking switches, routers, and telecom line cards run continuous duty from 12 V to 48 V intermediates, where the SS310L-RUG's 100 V rating covers both 48 V rails and high-ratio flyback secondaries. Its lack of reverse recovery keeps switching losses and conducted EMI low in densely packed boards that must pass EMC compliance, and the 3 A capability supports multiple port-power rails from a single rectifier position. The surface mount Sub SMA package reflows alongside standard SMT processes, supporting high-volume assembly. Design consideration: telecom environments demand derating above 25C ambient in enclosed chassis, so size copper pours conservatively and verify reverse leakage contribution to housekeeping standby power in always-on equipment.
Empfohlen
Consumer Appliance and Adapter Power Stages
AC-DC wall adapters, set-top boxes, and small appliance controllers use the SS310L-RUG as the low-voltage secondary rectifier or freewheeling diode, where its cost point near $0.36 per unit at 1000 pieces (as of 2026-10-16) meets aggressive BOM targets. The 100 V reverse rating accommodates common 5 V to 24 V secondaries with spike margin, and the RoHS-compliant RUG suffix satisfies global consumer-market environmental requirements. The compact Sub SMA outline fits the dense layouts of adapter PCBs, and the -55C to +150C junction range covers enclosed, limited-airflow environments. Design consideration: surge capability during adapter hot-plug and lightning-induced transient conditions should be checked against the datasheet IFSM rating, with a TVS or input MOV where warranted.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für SS310L-RUG – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | SS310L | SS310L-MQG | SS310L-M2G | SS310 |
|---|---|---|---|---|---|
| Package | Sub SMA | Sub SMA - same | Sub SMA - same | Sub SMA - same | SMA (DO-214AC) - verify land pattern |
| Brand | Taiwan Semiconductor | Taiwan Semiconductor | Taiwan Semiconductor | Taiwan Semiconductor | Taiwan Semiconductor |
| Reverse Voltage (VRRM) | 100 V | 100 V | 100 V | 100 V | 100 V |
| Average Forward Current | 3 A | 3 A | 3 A | 3 A | 3 A |
| Diode Technology | Schottky Barrier | Schottky Barrier | Schottky Barrier | Schottky Barrier | Schottky Barrier |
| RoHS Compliant Ordering Suffix | RUG (reel) | base number | MQG suffix | M2G suffix | base number |
Wichtigste Unterscheidungsmerkmale
- 100 V Schottky class in a compact Sub SMA footprint (vs. SS310)
- Same-family multi-suffix sourcing flexibility (vs. SS310L-MQG)
- RoHS-compliant reel packaging for automated assembly (vs. SS310L)
Designhinweise
The Sub SMA package dissipates heat primarily through the cathode lead frame into the PCB pads. At 3 A continuous load, dissipation equals the forward voltage drop times load current; for example, if VF were on the order of 0.7 V, that would be roughly 2.1 W - an estimate only, since the exact VF for this part is listed as data-needed and must be taken from the manufacturer datasheet. Design the anode and cathode pads to the recommended land pattern and add copper pour on the cathode side; verify junction temperature stays below the 150C maximum at worst-case ambient.
Schottky reverse leakage rises approximately exponentially with junction temperature, so a leakage value read at 25C can be orders of magnitude higher at 125C junction. In battery-backup, standby-power, or leakage-sensitive timing circuits, evaluate IR at maximum expected junction temperature, not room temperature. Also confirm orientation: the polarity band marks the cathode, and reversing the SS310L-RUG in the footprint applies full forward current through a shorted-like path and will fail the part.
Place the rectifier close to the transformer secondary or the switched node it clamps, with the output capacitor between anode and cathode on short traces to minimize the high-di/dt loop. Long loops in flyback rectification increase radiated EMI and voltage ringing that eats into the 100 V reverse-rating margin. A small RC snubber across the diode can tame secondary ringing where peak reverse voltage approaches the rating; compute the snubber from measured ring frequency and leakage inductance.
Compliance-Informationen
RUG suffix indicates RoHS-compliant, lead-free construction per distributor listings for the SS310L family. REACH, halogen-free, and conflict-minerals status not stated in the retrieved data.
