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Diodes Incorporated SB580-T
- Part No.:
- SB580-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SB580-T.pdf
- Description:
- DIODE SCHOTTKY 80V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,631
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Product details
Overview
SB580-T from Diodes Incorporated is a 5.0A, 80V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (0.80 V @ 5.0 A), high surge capability (150 A peak), and guard ring die construction for transient protection-used in low-voltage DC/DC converters, automotive polarity protection, and freewheeling diode applications.
For engineers reviewing the SB580-T datasheet, SB580-T pinout, SB580-T application, or SB580-T equivalent, key selection criteria include forward voltage drop at rated current, peak repetitive reverse voltage rating, thermal resistance (10 °C/W), junction capacitance (400 pF), and RoHS-compliant tin-plated leads with cathode band polarity marking.
Technical Context
This Schottky rectifier operates as a unidirectional power switching device optimized for high-frequency, low-loss rectification in DC/DC stages and flyback snubbing circuits. Its guard ring die structure enhances transient robustness, while the DO-201AD package supports thermal dissipation up to +150°C junction temperature.
Designed for operation under single-phase, half-wave, 60 Hz resistive or inductive loads, it requires 20% current derating for capacitive loads. Reverse leakage is specified at 0.5 mA (25°C) and 50 mA (100°C), reflecting its thermal stability across automotive-grade ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - Maximum repetitive reverse blocking voltage; defines safe operating ceiling in polarity protection and clamp circuits. |
| IF(AV) | 5.0 A @ TL = +80°C - Average forward current rating under defined thermal load; sets continuous conduction limit in power supply outputs. |
| VFM | 0.80 V @ IF = 5.0 A - Low conduction loss enables >92% efficiency in 5–12 V output rectification stages. |
| IFSM | 150 A (8.3 ms half-sine) - Surge withstand capability ensures reliability during inrush or fault transients in motor drive freewheel paths. |
| RθJA | 10 °C/W - Junction-to-ambient thermal resistance; determines heatsink-free operation up to ~2.5 W dissipation at +80°C ambient. |
| CJ | 400 pF @ 1 MHz, 4 V - Low junction capacitance minimizes switching losses and EMI in high-frequency (>100 kHz) converter topologies. |
Pinout & Package
DO-201AD molded plastic case with axial leads; cathode identified by band marking; lead finish: bright tin, solderable per MIL-STD-202 Method 208; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., switch node in buck converter or motor return path). |
| Cathode | Current exit point during forward conduction; marked with band | Connected to higher-potential rail (e.g., output capacitor positive or battery + terminal in polarity protection). |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient immunity without external TVS, enabling direct placement in noisy automotive power rails. |
| Low forward voltage (0.80 V) | Reduces conduction loss by ~35% vs. comparable silicon rectifiers, lowering thermal stress in sealed enclosures. |
| 150 A non-repetitive surge rating | Supports reliable operation during motor stall events or hot-plug in industrial control I/O modules. |
| RoHS-compliant tin plating | Ensures compatibility with lead-free reflow profiles (peak 260°C) and eliminates post-solder cleaning requirements. |
Applications
| Automotive Polarity Protection | DC/DC Converter Output Rectification |
|---|---|
Use Scenario: Prevents damage from reverse battery connection in vehicle infotainment head units and body control modules. IC Role / Device Role / Timing Role: Unidirectional current gate placed between battery input and main power rail. Use Value: 0.80 V forward drop limits power loss to <4 W at 5 A, avoiding thermal shutdown in compact PCB layouts. | Use Scenario: Rectifies switched output in 12 V → 5 V synchronous buck converters for ADAS camera modules. IC Role / Device Role / Timing Role: Freewheeling path for inductor current during low-side switch off-time. Use Value: 400 pF junction capacitance minimizes reverse recovery ringing, reducing conducted EMI near CISPR-25 Class 5 limits. |
| Industrial Motor Freewheeling | Power Supply Input Protection |
Use Scenario: Suppresses inductive kickback in 24 V solenoid drivers used in factory automation valves. IC Role / Device Role / Timing Role: Clamping diode across coil terminals, conducting only during de-energization. Use Value: 150 A surge rating handles 10× nominal coil current spikes without degradation over 100k+ cycles. | Use Scenario: Blocks reverse current flow from backup supercapacitor banks into primary 48 V telecom power supplies. IC Role / Device Role / Timing Role: Isolation diode in OR-ing configuration to prevent backfeed and ensure source priority. Use Value: 80 V VRRM provides 20% margin above 48 V nominal, accommodating line transients up to ±30 V without breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB580-B | Same electrical specs; bulk packaging (500 pcs) vs. tape & reel (1.2K) | No difference in circuit function; unsuitable for automated SMT placement | Select SB580-B only for manual prototyping or low-volume hand assembly. |
| Vishay VS-50SQ040 | Higher VRRM (40 V), lower VFM (0.49 V), same IF(AV) and package | Not suitable for 80 V systems; limited to ≤36 V inputs | Choose only for 24 V or lower DC systems where ultra-low VF is prioritized over voltage margin. |
Compared with SB580-B, SB580-T offers automated assembly readiness and traceability; versus VS-50SQ040, it trades lower forward voltage for essential 80 V blocking capability in 48 V industrial and automotive subsystems.
Availability
SB580-T is available at Aetrix Electronics and suitable for automotive polarity protection, industrial motor freewheeling, and DC/DC converter output rectification requiring stable component supply and full RoHS compliance.
Supply support for SB580-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and distribution operations across Asia, Europe, and North America.
The SB570–SB5100 series targets cost-sensitive, high-reliability power rectification in automotive, industrial, and consumer power supplies-emphasizing ruggedness, thermal performance, and AEC-Q200-aligned process control.
FAQ
What is the maximum junction temperature for SB580-T?
The SB580-T has an operating junction temperature range of –65°C to +150°C. This allows reliable operation in under-hood automotive environments and enclosed industrial enclosures without forced cooling, provided power dissipation remains within thermal limits defined by RθJA = 10 °C/W and ambient conditions.
Is SB580-T suitable for surface-mount assembly?
No-SB580-T uses the axial-leaded DO-201AD package and is designed for through-hole mounting. It is not compatible with standard SMT reflow or pick-and-place equipment. For surface-mount alternatives, consider Diodes Inc.'s APD5080Q or similar SOD-123FL Schottky devices.
Does SB580-T meet AEC-Q101 qualification?
No-SB580-T is not AEC-Q101 qualified. While manufactured in IATF 16949-certified facilities and compliant with RoHS, it lacks the extended stress testing required for automotive semiconductor qualification. For AEC-Q101 applications, Diodes recommends the SB580Q series.
How does the guard ring die construction improve reliability?
The guard ring structure surrounds the active junction to suppress edge breakdown under high dv/dt or ESD events. In practice, this increases the device's immunity to fast transients (e.g., ISO 7637-2 pulse 1/2a), reducing field failure rates in 12 V/24 V vehicle power networks without adding external protection components.
SB580-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 80 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
SB580-T FAQ
1.How can I place an order for SB580-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SB580-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SB580-T reliable?
The price and inventory of SB580-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB580-T is usually 5 days.
3.What payment methods are accepted for SB580-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB580-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SB580-T?
SB580-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SB580-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SB580-T?
For technical support, including SB580-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB580-T requirements.
6.How does Aetrix verify that SB580-T is sourced from the original manufacturer or authorized distributors?
All SB580-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SB580-T meets industry standards.
7.What is the process for return or replacement of SB580-T?
All SB580-T units undergo pre-shipment inspection (PSI). If there is an issue with SB580-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SB580-T part is unused and in its original packaging.
Return procedure for SB580-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SB580-T Tags
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