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Taiwan Semiconductor Corporation SRAS890H
- Part No.:
- SRAS890H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SRAS890H.pdf
- Description:
- 8A, 90V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:7,287
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Product details
Overview
SRAS890H from Taiwan Semiconductor is an AEC-Q101 qualified 8A, 90V Schottky barrier rectifier in TO-263AB (D2PAK) package, designed for low-loss freewheeling and reverse battery protection in automotive DC/DC converters. It delivers VF = 0.95 V at 8A/25°C, IFSM = 150 A, TJ max = 150°C, and RθJC = 3°C/W.
For engineers reviewing the SRAS890H datasheet, SRAS890H pinout, SRAS890H application, or SRAS890H equivalent, key selection criteria include its 90V VRRM rating, 150A surge capability, AEC-Q101 qualification, high-temperature operation up to 150°C junction, and TO-263AB thermal performance for automotive power stages.
Technical Context
The SRAS890H uses a single-die Schottky structure with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 90V VRRM and 0.95V forward voltage at 8A enable efficient operation in 12–48V automotive systems.
Thermally, it achieves 3°C/W junction-to-case resistance in the TO-263AB package and supports continuous operation from –55°C to +150°C junction temperature, with IR ≤ 100 µA at 25°C and ≤ 5 mA at 125°C under rated VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 48V automotive bus applications |
| IF | 8 A - Continuous forward current rating; supports sustained conduction in DC/DC output stages |
| IFSM | 150 A - Non-repetitive surge current (8.3ms half-sine); handles load dump and inductive kick events |
| VF @ 8A, 25°C | 0.95 V - Forward voltage drop; determines conduction loss and thermal rise in high-current paths |
| RθJC | 3 °C/W - Junction-to-case thermal resistance; enables effective heatsinking via PCB copper or external heatsink |
| TJ max | 150 °C - Maximum junction temperature; allows operation in under-hood environments without derating |
| IR @ 90V, 25°C | ≤100 µA - Reverse leakage current; ensures minimal standby power loss in battery-sensitive systems |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, single-anode/single-cathode configuration with exposed cathode tab for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Forward current input | Connects to switching node or inductive source; carries full 8A continuous current |
| Cathode (Tab & Lead 3) | Forward current output / thermal path | Electrically and thermally ties to PCB ground plane or heatsink; primary heat dissipation surface |
| NC (Lead 1) | No connection | Internal die pad only; electrically isolated and not bonded; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Guard ring overvoltage protection | Enhances ruggedness against transient voltage spikes without external snubbers in 12V/24V systems |
| Moisture sensitivity level 1 | Eliminates bake requirement before reflow; compatible with standard SMT assembly lines |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally restricted materials |
| High dv/dt capability (10,000 V/μs) | Prevents false turn-on during fast-switching transients in synchronous rectifier or flyback topologies |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12V/48V vehicle battery to 3.3V/5V/12V subsystem rails. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck converter output stage. Use Value: 0.95V VF minimizes conduction loss at 8A; 150°C TJ rating sustains operation near engine bay heat sources. | Use Scenario: Preventing damage when jumper cables are connected with reversed polarity. IC Role / Device Role / Timing Role: Series-connected Schottky rectifier blocking reverse current flow into sensitive electronics. Use Value: 90V VRRM withstands load dump transients; low VF avoids excessive voltage drop during normal forward operation. |
| LED Headlamp Drivers | Industrial 24V Power Supplies |
Use Scenario: Constant-current LED driver with boost or buck-boost topology powering automotive headlamps. IC Role / Device Role / Timing Role: Output rectifier handling pulsed 5–8A loads with high thermal cycling demand. Use Value: 150A IFSM absorbs PWM-induced surge currents; TO-263AB tab enables direct thermal coupling to metal-core PCB. | Use Scenario: DIN-rail mounted 24V industrial power supply feeding PLC I/O modules and sensors. IC Role / Device Role / Timing Role: Secondary-side rectifier in off-line SMPS with wide ambient temperature range. Use Value: AEC-Q101 qualification provides extended reliability margin beyond commercial-grade diodes; 3°C/W RθJC simplifies thermal design. |
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 TO-263AB package, 8A/90V, VF = 0.87V @ 8A, TJ max = 175°C, no AEC-Q101 qualification | Higher temp rating but lacks automotive qualification; suited for industrial use only | Select when higher junction temperature margin is needed and AEC-Q101 is not required |
| ON Semiconductor SB890 | TO-263AB, 8A/90V, VF = 0.92V @ 8A, TJ max = 150°C, AEC-Q101 qualified, IR = 120 µA @ 25°C | Slightly higher leakage; identical qualification and thermal specs; same footprint | Drop-in alternative where minor IR increase is acceptable and second-source assurance is desired |
Compared with VS-8EWH09FN-M3 and SB890, the SRAS890H uniquely combines AEC-Q101 qualification, 0.95V VF, and 150°C operation in a cost-optimized TO-263AB package-making it optimal for automotive power stages where qualification and thermal robustness are mandatory.
Availability
SRAS890H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and LED headlamp drivers requiring stable component supply across production lifecycles.
Supply support for SRAS890H 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, serving automotive, industrial, and consumer markets since 1979.
The SRAS8xxH series was developed specifically for AEC-Q101-compliant automotive power conversion, emphasizing low VF, high surge tolerance, and robust thermal performance in surface-mount Schottky rectifiers.
FAQ
What is the maximum junction temperature rating for SRAS890H?
The SRAS890H has a maximum junction temperature (TJ max) of +150°C, verified per AEC-Q101 stress testing. This allows reliable operation in under-hood automotive environments without thermal derating at full 8A current, provided the PCB layout maintains RθJA ≤ 25°C/W and case temperature remains below 125°C. The SRAS890H datasheet specifies this limit across all operating conditions.
Is SRAS890H pin-compatible with other parts in the SRAS8xxH family?
Yes, all SRAS8xxH devices-including SRAS890H-share identical TO-263AB (D2PAK) packaging, pinout, and mechanical dimensions. The anode (lead 2), cathode (tab + lead 3), and NC (lead 1) positions are consistent across the family. Voltage ratings differ (20V–150V), but board layout and footprint require no changes when substituting within the series.
What is the forward voltage specification for SRAS890H at 8A and 125°C?
The SRAS890H forward voltage (VF) is specified as typical 0.95 V at IF = 8A and TJ = 25°C. At TJ = 125°C, VF decreases to approximately 0.82 V due to the negative temperature coefficient of Schottky diodes. This reduction is confirmed by the "Typical Forward Characteristics" curve (Fig.4) in the SRAS820H–SRAS8150H datasheet.
Does SRAS890H meet automotive reliability standards?
Yes, SRAS890H is explicitly AEC-Q101 qualified per Version A2103 of the datasheet. It has passed stress tests including HTGB, HTRB, TCT, and ESD (HBM ≥ 2 kV), confirming suitability for automotive powertrain, body, and lighting applications. This qualification applies specifically to the SRAS890H variant-not inferred from family-level claims.
What is the reverse leakage current of SRAS890H at 90V and 125°C?
At VR = 90V and TJ = 125°C, the SRAS890H exhibits a maximum reverse leakage current (IR) of 5 mA, as specified in the "ELECTRICAL SPECIFICATIONS" table. This value is measured under 30ms pulse conditions and reflects worst-case behavior in hot under-hood environments-critical for evaluating standby power loss in always-on automotive modules.
SRAS890H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 950 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SRAS890H FAQ
1.How can I place an order for SRAS890H through Aetrix?
Please submit a Request for Quotation (RFQ) for SRAS890H 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 SRAS890H reliable?
The price and inventory of SRAS890H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS890H is usually 5 days.
3.What payment methods are accepted for SRAS890H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS890H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRAS890H?
SRAS890H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRAS890H 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 SRAS890H?
For technical support, including SRAS890H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS890H requirements.
6.How does Aetrix verify that SRAS890H is sourced from the original manufacturer or authorized distributors?
All SRAS890H 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 SRAS890H meets industry standards.
7.What is the process for return or replacement of SRAS890H?
All SRAS890H units undergo pre-shipment inspection (PSI). If there is an issue with SRAS890H, 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 SRAS890H part is unused and in its original packaging.
Return procedure for SRAS890H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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