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Diodes Incorporated SB590-T
- Part No.:
- SB590-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SB590-T.pdf
- Description:
- DIODE SCHOTTKY 90V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,488
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Product details
Overview
SB590-T from Diodes Incorporated is a 5.0A, 90V Schottky barrier rectifier in DO-201AD package, featuring 0.80V forward voltage at 5.0A, 150A non-repetitive surge capability, and 400pF typical junction capacitance. It serves as a low-loss freewheeling or polarity protection diode in DC-DC converters and AC/DC front-end rectification stages.
For engineers reviewing the SB590-T datasheet, SB590-T pinout, SB590-T application, or SB590-T equivalent, key selection criteria include peak reverse voltage (90V), average forward current (5.0A @ TL=80°C), thermal resistance (10 K/W), surge rating (150A), and RoHS-compliant bright tin plating for reliable solderability.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient immunity and suppress leakage under high-temperature reverse bias. Its low VF and high IFSM support efficient energy recovery in switching power supplies operating up to 100°C junction temperature.
The device is optimized for single-phase, half-wave 60Hz operation with resistive or inductive loads; capacitive loads require 20% current derating. Junction-to-ambient thermal resistance of 10 K/W enables direct PCB-mount thermal management without heatsinking in moderate-power designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse blocking voltage; defines safe DC/AC peak voltage limit before breakdown |
| IO | 5.0 A @ TL=80°C - Continuous average forward current rating under specified lead temperature condition |
| VFM | 0.80 V @ IF=5.0A - Forward conduction loss directly impacts efficiency and thermal rise in power paths |
| IFSM | 150 A (8.3ms half-sine) - Surge withstand capability for inrush or fault transients in industrial power systems |
| Cj | 400 pF @ 4V, 1MHz - Junction capacitance affects high-frequency switching noise and EMI filtering requirements |
| RJA | 10 K/W - Thermal resistance from junction to ambient; determines steady-state temperature rise on standard FR-4 PCB |
Pinout & Package
DO-201AD axial-leaded plastic package with cathode band marking; leads are bright tin-plated and MIL-STD-202 solderable. Mechanical dimensions: A=25.40mm, B=7.20–9.50mm, C=1.20–1.30mm, D=4.80–5.30mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or return path) in freewheeling or reverse polarity protection |
| Cathode (Lead 2, banded end) | Current exit point during forward conduction | Connected to higher-potential node (e.g., input rail or switch node); polarity marking ensures correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient voltage immunity and reduces IR drift under high-temperature reverse bias |
| Low forward voltage (0.80V) | Reduces conduction loss by ~30% vs. comparable silicon rectifiers, lowering thermal load in 5A applications |
| 150A surge rating | Supports robust operation during motor startup, capacitor charging, or short-circuit events without failure |
| RoHS-compliant bright tin plating | Ensures consistent wetting and joint reliability in lead-free reflow and wave solder processes |
Applications
| DC-DC Converter Freewheeling | AC/DC Input Rectification |
|---|---|
Use Scenario: Used across synchronous buck converter output inductor to recirculate current during low-side switch off-time. IC Role / Device Role: Freewheeling diode enabling continuous inductor current and minimizing voltage spikes. Use Value: 0.80V VF limits conduction loss to <0.4W at 5A, reducing thermal stress versus higher-VF alternatives. | Use Scenario: Half-wave rectifier in offline AC adapter input stage feeding bulk capacitor. IC Role / Device Role: Unidirectional current path converting AC line to pulsating DC with minimal forward drop. Use Value: 90V VRRM supports 63V RMS input (e.g., 90VAC nominal), meeting safety margin requirements for Class II designs. |
| Polarity Protection | Reverse Battery Protection |
Use Scenario: Placed in series with positive supply rail to block reverse connection in industrial sensors. IC Role / Device Role: Series-blocking diode preventing damage when input polarity is inverted. Use Value: 5.0A IO rating handles full system load; 10 K/W RJA allows operation without heatsink at ambient ≤60°C. | Use Scenario: Cathode-to-battery-positive configuration in automotive control modules. IC Role / Device Role: Reverse battery protection element shunting fault current away from downstream circuitry. Use Value: 150A IFSM withstands momentary short-circuit currents during accidental reverse connection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-50SQ030 | 30V VRRM, 0.42V VF @ 5A - lower voltage rating, lower forward drop | Not suitable for 90V blocking; limited to ≤30V DC bus applications | Select only where system VIN ≤30V and ultra-low VF is prioritized over voltage margin |
| ON Semiconductor SB590-E3/54 | Identical electrical specs; DO-201AD package; matte tin plating per J-STD-020C Level 1 | No functional difference; differs only in plating finish and packaging format (ammo pack vs. tape/reel) | Drop-in replacement for SB590-T where tape-and-reel is not required and matte tin is acceptable |
Compared with SB590-T, VS-50SQ030 offers lower conduction loss but insufficient voltage headroom for 90V applications, while SB590-E3/54 provides identical performance with alternate plating and packaging-making it a direct functional substitute where reel format is unnecessary.
Availability
SB590-T is available at Aetrix Electronics and suitable for DC-DC converters, AC/DC adapters, polarity protection circuits, and reverse battery protection systems requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SB590-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 and manufacturing operations across Asia and the Americas.
The SB570–SB5100 series targets cost-sensitive, high-efficiency power conversion in consumer, industrial, and computing applications-emphasizing low VF, high surge tolerance, and robust thermal performance in standard axial packages.
FAQ
What is the maximum junction temperature for SB590-T?
The SB590-T has an operating junction temperature range of –65°C to +150°C. Its thermal resistance (RJA = 10 K/W) and 5.0A current rating are specified at TL = 80°C, meaning lead temperature must be maintained at or below this value for full current capability in continuous operation.
Is SB590-T suitable for use in capacitive-load rectifier circuits?
Yes, but with mandatory derating: the datasheet specifies a 20% reduction in average forward current (to 4.0A) when used with capacitive loads. This accounts for higher peak currents and increased thermal stress caused by rapid capacitor charging at AC zero-crossings.
Does SB590-T have a defined cathode identification method?
Yes-the cathode is unambiguously marked by a distinct band on the DO-201AD package body, located adjacent to the cathode lead (Lead 2). This band aligns with industry-standard polarity marking and is visible during manual or automated placement inspection.
How does the guard ring die construction improve reliability?
The guard ring structure mitigates edge breakdown under high dv/dt or transient overvoltage conditions by controlling electric field distribution at the silicon periphery. This reduces leakage current drift at 100°C and improves long-term stability in industrial environments with frequent line surges.
SB590-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):
- 90 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 @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
SB590-T FAQ
1.How can I place an order for SB590-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SB590-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 SB590-T reliable?
The price and inventory of SB590-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB590-T is usually 5 days.
3.What payment methods are accepted for SB590-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB590-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SB590-T?
SB590-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SB590-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 SB590-T?
For technical support, including SB590-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB590-T requirements.
6.How does Aetrix verify that SB590-T is sourced from the original manufacturer or authorized distributors?
All SB590-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 SB590-T meets industry standards.
7.What is the process for return or replacement of SB590-T?
All SB590-T units undergo pre-shipment inspection (PSI). If there is an issue with SB590-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 SB590-T part is unused and in its original packaging.
Return procedure for SB590-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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