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Taiwan Semiconductor Corporation SRA860
- Part No.:
- SRA860
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
SRA860.pdf
- Description:
- DIODE SCHOTTKY 60V 8A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,245
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Product details
Overview
SRA860 from Taiwan Semiconductor is an 8A, 60V Schottky barrier rectifier in TO-220AC package, designed for high-efficiency DC/DC conversion and SMPS secondary-side rectification. It delivers VF = 0.70 V at 8A/25°C, IR ≤ 500 µA at 25°C, IFSM = 150 A, RθJC = 4°C/W, and operates up to TJ = 125°C.
For engineers reviewing the SRA860 datasheet, SRA860 pinout, SRA860 application, or SRA860 equivalent, key selection criteria include forward voltage drop at rated current, reverse leakage at elevated temperature, surge current capability, thermal resistance, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This single-die Schottky rectifier uses a guard ring structure to enhance overvoltage robustness and supports high dv/dt (10,000 V/µs), enabling stable operation in fast-switching topologies. Its low forward voltage and low junction-to-case thermal resistance directly reduce conduction losses and simplify heatsinking in compact power supplies.
The device is rated for repetitive peak reverse voltage VRRM = 60 V and reverse rms voltage VR(RMS) = 42 V, with reverse leakage limited to 10 mA at TJ = 100°C - critical for maintaining efficiency in thermally constrained adapters and industrial DC/DC modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - maximum blocking voltage in repetitive reverse bias; defines usable input/output voltage range in flyback or forward converters |
| IF | 8 A - continuous average forward current; sets minimum conductor sizing and heatsink requirements at ambient temperature |
| VF @ 8A, 25°C | 0.70 V - conduction loss per diode; determines ~5.6 W dissipation at full load, impacting thermal design margin |
| IR @ 60V, 25°C | ≤500 µA - reverse leakage at rated voltage; ensures minimal standby loss in offline adapters |
| IFSM | 150 A - non-repetitive surge rating; withstands inrush and fault currents without failure in 8.3 ms half-sine test |
| RθJC | 4 °C/W - thermal resistance from junction to case; enables direct mounting to heatsink with predictable temperature rise |
| TJ max | 125 °C - maximum operating junction temperature; constrains derating curve above 75°C case temperature |
Pinout & Package
Package: TO-220AC - insulated case, single-ended vertical mounting, matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, 1.85 g typical weight, polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to transformer secondary or switching node; must handle 8 A DC + ripple with low parasitic inductance |
| Cathode | Forward current exit point | Typically tied to output capacitor ground or common return; carries full load current to output filter |
| Case / Tab | Thermal path and mechanical anchor | Electrically connected to cathode; requires insulating washer if mounted to grounded heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Enhances ruggedness against transient voltage spikes without external snubbers in 60 Hz line-frequency or high-dv/dt SMPS environments |
| AEC-Q101 qualified option (SRA860H) | Validated for automotive under-hood applications including engine control modules and infotainment power rails |
| High surge current capability (150 A) | Supports cold-start inrush and short-circuit recovery in 48 V DC/DC systems without degradation |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and global environmental directives for industrial and consumer end equipment |
| Low thermal resistance (4 °C/W) | Enables >75% of rated current delivery with passive cooling in space-constrained 25 mm × 25 mm PCB footprints |
Applications
| Server Power Supply Rectification | Automotive DC/DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 1U server PSUs delivering 500–1000 W at 12 V output. IC Role / Device Role / Timing Role: Schottky rectifier handling continuous 8 A output current with minimal conduction loss. Use Value: VF = 0.70 V reduces conduction loss by ~15% vs. legacy 0.85 V parts, improving full-load efficiency from 92.1% to 92.7%. | Use Scenario: 12 V to 5 V/3.3 V buck converter in ADAS camera ECU with 85°C ambient requirement. IC Role / Device Role / Timing Role: Output rectifier in high-frequency (300 kHz) isolated flyback supplying microcontroller and image sensor rails. Use Value: TJ = 125°C rating and 10 mA IR at 100°C ensure stable regulation during extended thermal soak testing. |
| Laptop Adapter Secondary Side | Industrial PLC Power Module |
Use Scenario: 65 W universal-input adapter with dual-output (20 V/3.25 A + 5 V/3 A) using shared primary and independent secondaries. IC Role / Device Role / Timing Role: Main 20 V output rectifier operating at 100 kHz with 8 A peak current. Use Value: TO-220AC mechanical robustness and 150 A IFSM tolerate repeated plug/unplug surges without parameter shift. | Use Scenario: DIN-rail mounted 24 V input, 24 V/5 A regulated output module for factory automation I/O cards. IC Role / Device Role / Timing Role: Input-stage rectifier in bridgeless PFC front-end followed by LLC resonant stage. Use Value: Guard ring structure prevents premature breakdown during 600 V line transients per IEC 61000-4-5 Level 3 testing. |
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-8EWH06FN-M3 | Same 8 A / 60 V rating, VF = 0.67 V @ 8 A, RθJC = 3.5°C/W, TO-220AC package, AEC-Q101 qualified | Lower VF and thermal resistance support higher power density; tighter VF distribution improves parallel operation | Select when optimizing for <10 mW conduction loss reduction or need tighter parametric binning |
| ON Semiconductor SB860-E3/45 | 8 A / 60 V, VF = 0.72 V @ 8 A, RθJC = 4.5°C/W, TO-220AC, no AEC-Q101 option | Higher VF increases conduction loss by ~0.16 W at full load; lacks automotive qualification | Select for cost-sensitive industrial applications where AEC-Q101 is not required |
Compared with VS-8EWH06FN-M3 and SB860-E3/45, the SRA860 offers balanced performance: lower VF than SB860-E3/45 for better efficiency, and AEC-Q101 availability (as SRA860H) unlike SB860-E3/45, while trading 0.03 V VF and 0.5°C/W thermal resistance versus Vishay's tighter spec.
Availability
SRA860 is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC adapters requiring stable component supply with consistent thermal and electrical performance across production batches.
Supply support for SRA860 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 rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.
The SRA8xx series was developed to deliver high-reliability, high-current Schottky rectifiers with guard ring protection and AEC-Q101 qualification for next-generation power conversion in automotive ECUs and compact industrial PSUs.
FAQ
What is the maximum junction temperature rating for the SRA860?
The SRA860 has a maximum junction temperature (TJ max) of +125°C. This rating applies to standard SRA860 variants; the AEC-Q101 qualified SRA860H version maintains the same TJ max but includes additional stress testing per automotive qualification requirements. Thermal design must ensure junction temperature remains below 125°C under worst-case ambient and power dissipation conditions.
Does the SRA860 have AEC-Q101 qualification?
Yes - the SRA860H variant is explicitly AEC-Q101 qualified, as confirmed in the ordering information and features list. The base SRA860 part is not AEC-Q101 qualified; only the "H" suffix denotes automotive-grade qualification. Designers targeting automotive applications must specify SRA860H to meet reliability and stress-test requirements.
What is the forward voltage of the SRA860 at 8 A and 100°C junction temperature?
The datasheet specifies VF only at TJ = 25°C (0.70 V typ). While VF decreases with rising temperature for Schottky diodes, no typ/max value is published for VF at 100°C. However, IR increases to 10 mA at TJ = 100°C, indicating thermal stability within the 125°C limit. For precise high-temperature VF modeling, refer to Fig.4 (Typical Forward Characteristics) in the SRA860 datasheet.
Is the SRA860 pin-compatible with other TO-220AC Schottky rectifiers?
Yes - the SRA860 uses the industry-standard TO-220AC package with anode, cathode, and electrically connected tab (cathode polarity). Its pinout matches all TO-220AC rectifiers, including Vishay, ON Semiconductor, and Diodes Inc. equivalents. Mechanical mounting and thermal interface design remain identical across this package family.
What is the reverse leakage current of the SRA860 at rated voltage and elevated temperature?
At VR = 60 V and TJ = 100°C, the SRA860 exhibits IR ≤ 10 mA (max), per the Electrical Specifications table. At TJ = 25°C and VR = 60 V, IR is ≤ 500 µA. This temperature-dependent leakage is critical for standby power budgeting in energy-efficient adapters and must be verified under actual operating thermal conditions.
SRA860 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):
- 60 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 60 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
SRA860 FAQ
1.How can I place an order for SRA860 through Aetrix?
Please submit a Request for Quotation (RFQ) for SRA860 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 SRA860 reliable?
The price and inventory of SRA860 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRA860 is usually 5 days.
3.What payment methods are accepted for SRA860?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRA860 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRA860?
SRA860 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRA860 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 SRA860?
For technical support, including SRA860 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRA860 requirements.
6.How does Aetrix verify that SRA860 is sourced from the original manufacturer or authorized distributors?
All SRA860 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 SRA860 meets industry standards.
7.What is the process for return or replacement of SRA860?
All SRA860 units undergo pre-shipment inspection (PSI). If there is an issue with SRA860, 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 SRA860 part is unused and in its original packaging.
Return procedure for SRA860:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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