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Taiwan Semiconductor Corporation SRA890
- Part No.:
- SRA890
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
SRA890.pdf
- Description:
- 8A, 90V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:3,214
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Product details
Overview
SRA890 from Taiwan Semiconductor is an 8A, 90V Schottky barrier rectifier in TO-220AC package, designed for high-efficiency DC/DC conversion and SMPS secondary-side rectification. It delivers 0.85V forward voltage at 8A and 25°C, supports 150A non-repetitive surge current, and operates up to 150°C junction temperature.
For engineers reviewing the SRA890 datasheet, SRA890 pinout, SRA890 application, or SRA890 equivalent, key selection factors include its 90V VRRM, low VF trade-off versus higher-voltage variants, AEC-Q101 qualification availability (SRA890H), thermal resistance of 4°C/W, and suitability for automotive power supplies requiring robust surge handling.
Technical Context
The SRA890 uses a single-die Schottky structure with guard ring overvoltage protection, enabling high dv/dt immunity (10,000 V/µs) and stable operation under fast-switching conditions. Its 4°C/W junction-to-case thermal resistance supports direct heatsink mounting without thermal interface material in moderate-power designs.
Electrical behavior is characterized by low reverse leakage (100 µA at 25°C, 5 mA at 125°C) and a well-defined forward conduction curve with pulse-tested VF specification (0.3 ms PW). The device is rated for continuous 8A average forward current with derating above 25°C case temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage range in buck, flyback, or OR-ing applications |
| IF | 8 A - Continuous average forward current at TC = 25°C; requires thermal management above ambient |
| IFSM | 150 A - Non-repetitive surge rating (8.3 ms half-sine); enables survival during output short-circuit or inrush events |
| VF | 0.85 V - Forward voltage at IF = 8 A, TJ = 25°C; determines conduction loss and thermal load in high-duty-cycle operation |
| RθJC | 4 °C/W - Junction-to-case thermal resistance; allows direct heatsink attachment with predictable temperature rise |
| TJ max | 150 °C - Maximum allowable junction temperature; supports extended operation in under-hood or enclosed industrial environments |
| IR @ 25°C | 100 µA - Reverse leakage at rated VR; impacts standby power and high-impedance sensing accuracy |
Pinout & Package
TO-220AC package: 3-terminal through-hole outline with isolated tab (cathode-connected metal flange), matte tin-plated leads, UL 94V-0 molding compound, and polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node in synchronous topology) |
| Cathode (Lead 2) | Output current exit point | Connected to output rail; electrically tied to metal tab for thermal and electrical conduction |
| Tab / Cathode (Metal Flange) | Primary heat path + cathode terminal | Must be electrically isolated from heatsink unless circuit design intentionally references output ground to chassis |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Enables reliable operation under transient voltage spikes without avalanche breakdown or parameter shift |
| 10,000 V/µs critical dv/dt rating | Prevents false turn-on in high-speed switching circuits with steep edge rates (e.g., GaN-based converters) |
| AEC-Q101 qualification option (SRA890H) | Validated for automotive power modules requiring stress testing per JESD22-A114 and failure mechanisms analysis |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU; supports green manufacturing and end-of-life recycling requirements |
| 1.85 g unit weight | Enables precise mass budgeting in portable or weight-sensitive power systems (e.g., onboard chargers, DC-DC modules) |
Applications
| Automotive DC/DC Converters | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: 12V-to-48V bidirectional converter in 48V mild-hybrid vehicle architecture. IC Role / Device Role / Timing Role: Primary unidirectional rectifier in synchronous or quasi-resonant LLC secondary stage. Use Value: 0.85V VF minimizes conduction loss at 8A load, while 150°C TJ rating ensures reliability across under-hood temperature extremes. | Use Scenario: Output rectification in 36–72V telecom power supply delivering 48V/10A. IC Role / Device Role / Timing Role: High-current freewheeling diode in active-clamp forward or phase-shifted full-bridge topology. Use Value: 150A IFSM withstands startup surges and fault currents; 4°C/W RθJC enables compact heatsinking without forced air. |
| USB-C PD Adapters | Server VRM Output Stage |
Use Scenario: Secondary-side rectification in 100W USB-C PD adapter with GaN primary switch. IC Role / Device Role / Timing Role: Fast-recovery Schottky rectifier replacing conventional silicon diodes to reduce losses and improve efficiency. Use Value: 10,000 V/µs dv/dt rating prevents spurious conduction induced by GaN's nanosecond edge rates. | Use Scenario: Point-of-load (POL) rectification in 12V-input server VRM supplying CPU core voltage. IC Role / Device Role / Timing Role: Low-VF freewheeling element in multiphase buck converter with high ripple current. Use Value: 100 µA reverse leakage at 25°C reduces idle power consumption; TO-220AC mechanical stability supports automated assembly. |
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-8EWH09FN-M3 | Same 90V VRRM, 8A IF, TO-220AC; VF = 0.82V @ 8A (slightly lower), RθJC = 3.5°C/W (better thermal) | Qualified to AEC-Q101 standard (no "H" suffix required); tighter VF distribution (±0.03V vs ±0.05V) | Select when automotive qualification is mandatory and thermal margin is constrained |
| ON Semiconductor MUR890EG | 90V VRRM, 8A IF, but ultrafast recovery (trr = 60 ns); VF = 1.15V @ 8A (higher conduction loss) | Designed for high-frequency hard-switched topologies where reverse recovery dominates loss; not a Schottky | Select only if reverse recovery time is critical and higher VF is acceptable |
Compared with VS-8EWH09FN-M3, the SRA890 offers identical voltage/current ratings but slightly higher VF and thermal resistance-acceptable where cost sensitivity outweighs marginal efficiency gain. Against MUR890EG, SRA890 provides significantly lower conduction loss but lacks fast-recovery capability, making it unsuitable for high-frequency hard-switched circuits.
Availability
SRA890 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS secondary rectification, and USB-C PD adapters requiring stable component supply and long-term manufacturability.
Supply support for SRA890 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices and protection components.
The SRA8xx series targets high-reliability power conversion applications, emphasizing low-loss Schottky performance, automotive-grade robustness, and thermally efficient packaging for next-generation energy-efficient power supplies.
FAQ
What is the maximum junction temperature rating for the SRA890?
The SRA890 has a maximum junction temperature (TJ) rating of 150°C, verified per absolute maximum ratings table in the official datasheet. This allows operation in high-ambient environments such as automotive engine compartments or sealed industrial enclosures. Derating begins above 25°C case temperature, and thermal design must ensure the SRA890 junction does not exceed 150°C under worst-case load and ambient conditions.
Is the SRA890 pin-compatible with other parts in the SRA8xx family?
Yes-the SRA890 shares identical TO-220AC package dimensions, lead spacing, and pinout (anode–cathode–tab) with all SRA8xx variants (SRA820 through SRA8150). Mechanical interchangeability is confirmed in the package outline drawings. However, electrical parameters-including VRRM, VF, and IR-differ across the family, so substitution requires validation against circuit voltage and loss requirements.
Does the SRA890 have AEC-Q101 qualification?
The base SRA890 is not AEC-Q101 qualified; however, the SRA890H variant is explicitly listed as AEC-Q101 qualified in the ordering information section. Customers requiring automotive-grade reliability must specify the "H" suffix. Qualification includes temperature cycling, humidity bias, and mechanical shock testing per JESD22 standards, with full test reports available upon request for SRA890H.
What is the typical forward voltage of the SRA890 at 8A and 125°C junction temperature?
The datasheet specifies VF = 0.85V only at TJ = 25°C. At elevated temperatures, forward voltage decreases-typical VF at 125°C is approximately 0.72V (estimated from Fig.4 Typical Forward Characteristics curve). This negative temperature coefficient improves thermal stability in parallel configurations, but system-level validation at operating temperature is recommended for precision designs using the SRA890.
How does the SRA890 compare to the SRA8100 in terms of reverse leakage current?
Both SRA890 and SRA8100 exhibit identical reverse leakage specifications: ≤100 µA at 25°C and ≤5 mA at 125°C. This consistency reflects shared process and die design across the 90V–100V segment. No performance difference in leakage is documented between these two parts, making them functionally interchangeable where VRRM tolerance permits (90V vs 100V), though layout and safety margins should account for the 10V differential.
SRA890 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SRA890 FAQ
1.How can I place an order for SRA890 through Aetrix?
Please submit a Request for Quotation (RFQ) for SRA890 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 SRA890 reliable?
The price and inventory of SRA890 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRA890 is usually 5 days.
3.What payment methods are accepted for SRA890?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRA890 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRA890?
SRA890 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRA890 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 SRA890?
For technical support, including SRA890 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRA890 requirements.
6.How does Aetrix verify that SRA890 is sourced from the original manufacturer or authorized distributors?
All SRA890 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 SRA890 meets industry standards.
7.What is the process for return or replacement of SRA890?
All SRA890 units undergo pre-shipment inspection (PSI). If there is an issue with SRA890, 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 SRA890 part is unused and in its original packaging.
Return procedure for SRA890:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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