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Taiwan Semiconductor Corporation SR820
- Part No.:
- SR820
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR820.pdf
- Description:
- 8A, 200V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:6,545
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Product details
Overview
SR820 from Taiwan Semiconductor is a 200 V, 8 A Schottky barrier rectifier in DO-201AD package, featuring 1.02 V forward voltage at 8 A and 25°C, 100 µA reverse leakage at rated VR and 25°C, and 150 A surge current capability - deployed in high-efficiency DC/DC converters and industrial SMPS.
For engineers reviewing the SR820 datasheet, SR820 pinout, SR820 application, or SR820 equivalent, key selection factors include its 200 V repetitive peak reverse voltage, 125–150°C junction temperature range, AEC-Q101 qualification option (SR820H), DO-201AD mechanical compatibility, and low VF vs. high VR trade-off versus lower-voltage variants.
Technical Context
The SR820 operates as a single-die, unidirectional Schottky rectifier with guard ring structure for overvoltage protection and pure tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/µs critical dv/dt rating supports fast-switching topologies.
Thermally, it exhibits 40°C/W junction-to-ambient resistance and derates linearly to zero average forward current at 150°C ambient (for SR820 variant), with pulse-tested VF and IR values confirming stable performance under transient load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum non-repetitive reverse blocking voltage; defines upper limit for input/output rail isolation in offline or boost converters |
| IF | 8 A - continuous average forward current at case temperature ≤ 75°C; sets baseline conduction capacity for 30–60 W power stages |
| VF | 1.02 V @ 8 A, 25°C - forward drop directly impacts conduction loss (≈8.2 W at full load); higher than SR802 but enables 200 V operation |
| IR | 100 µA @ 200 V, 25°C - low leakage preserves efficiency in standby mode and reduces thermal runaway risk in parallel configurations |
| IFSM | 150 A @ 8.3 ms half-sine - withstands inrush and fault currents without bond wire fusing; critical for AC-input front-end protection |
| TJ max | 125°C standard / 150°C AEC-Q101 version - determines thermal design margin and heatsink sizing in enclosed industrial environments |
| RθJA | 40°C/W - quantifies self-heating under natural convection; requires ≥1.5 cm² copper pour for 8 A continuous operation at 50°C ambient |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; 1.10 g mass; UL 94V-0 molding compound; polarity indicated by single black band on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap) |
| Cathode (banded end) | Forward current exit / reverse voltage blocking terminal | Connected to output rail or filter capacitor; must sustain full VRRM during off-state with minimal leakage |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown at 200 V, enabling reliable operation near absolute maximum ratings without field plate redesign |
| AEC-Q101 qualification option (SR820H) | Validated for automotive under-hood applications including engine control modules and ADAS power supplies |
| 10,000 V/µs dv/dt rating | Supports gate-drive transformer coupling and high-frequency flyback operation without false turn-on or avalanche triggering |
| Pure tin-plated leads | Ensures consistent wetting and intermetallic formation during reflow or wave soldering per J-STD-002 Class 2 |
| Halogen-free per IEC 61249-2-21 | Meets RoHS and ELV compliance requirements for export to EU, China, and Korea without compromising thermal or electrical performance |
Applications
| Industrial SMPS | Automotive DC/DC Converters |
|---|---|
Use Scenario: 48 V to 12 V step-down converter in factory automation PLC power supply. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant topology handling 8 A continuous load. Use Value: 200 V VRRM provides 2× safety margin over 48 V nominal input; 1.02 V VF limits conduction loss to <8.2 W at full load. | Use Scenario: 12 V auxiliary supply in ADAS camera ECU with cold-crank tolerance. IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated flyback supplying microcontroller and image sensor rails. Use Value: AEC-Q101-qualified SR820H sustains 150°C junction temperature during engine bay operation; 150 A IFSM survives 12 V battery dump transients. |
| Telecom Power Bricks | Renewable Energy Inverters |
Use Scenario: Output stage of 3 kW telecom rectifier module converting -48 V DC to +5 V/+12 V system rails. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward converter operating at 200 kHz. Use Value: 40°C/W RθJA allows direct PCB mounting without heatsink; 100 µA IR minimizes standby power draw across 100+ units. | Use Scenario: DC link snubber and auxiliary supply rectification in solar microinverter power stage. IC Role / Device Role / Timing Role: Clamping diode in IGBT gate drive circuit and auxiliary bias supply rectifier. Use Value: 10,000 V/µs dv/dt rating prevents spurious conduction during 1200 V IGBT switching edges; DO-201AD form factor fits constrained layout. |
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-8EWH02-M3 | 200 V, 8 A, VF = 0.82 V @ 8 A - 0.20 V lower forward drop but no AEC-Q101 option; TO-277 package | Preferred where lower conduction loss dominates over automotive qualification or axial lead compatibility | Select when board space permits SMD mounting and thermal budget allows reduced heatsinking |
| ON Semiconductor SB820 | 200 V, 8 A, VF = 1.05 V @ 8 A - nearly identical electrical specs; same DO-201AD package; AEC-Q101 qualified | Drop-in replacement where second-source assurance is required for long-lifecycle industrial programs | Choose for dual-sourcing strategy without layout or thermal redesign |
Compared with VS-8EWH02-M3, SR820 trades 0.20 V higher VF for axial DO-201AD compatibility and AEC-Q101 availability; versus SB820, it offers identical performance with different manufacturing traceability and qualification documentation pathways.
Availability
SR820 is available at Aetrix Electronics and suitable for industrial SMPS, automotive DC/DC converters, and telecom power bricks requiring stable component supply with long-term lifecycle visibility.
Supply support for SR820 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 industrial, computing, and automotive markets since 1979.
The SR802–SR820 series was designed specifically for high-current, medium-voltage Schottky rectification in space-constrained power supplies where reliability under thermal and surge stress is critical.
FAQ
What is the maximum junction temperature rating for SR820?
The SR820 has a maximum junction temperature of 125°C for standard versions and 150°C for AEC-Q101-qualified SR820H variants. This rating is validated per JESD22-A103 and defines the upper thermal limit for safe continuous operation under specified thermal resistance conditions. Exceeding TJ max risks parametric shift and accelerated failure mechanisms in the SR820 die.
Is SR820 pin-compatible with other parts in the SR8xx family?
Yes, all SR8xx parts including SR820 share identical DO-201AD package dimensions, anode/cathode polarity marking, and lead finish. Mechanical interchangeability is guaranteed across the family, though electrical parameters like VRRM, VF, and IR differ significantly between variants - SR820 must not be substituted for lower-voltage SR802–SR815 without verifying reverse voltage margin.
Does SR820 meet automotive qualification standards?
The base SR820 is not AEC-Q101 qualified; however, the SR820H variant is fully AEC-Q101 certified for stress testing including HTSL, TC, and uHAST. Automotive users must specify SR820H explicitly - the "H" suffix denotes qualification, and SR820H carries separate test reports and lot traceability distinct from commercial SR820.
What is the typical forward voltage of SR820 at 8 A and 125°C?
While the datasheet specifies VF = 1.02 V at 8 A and 25°C, the SR820 exhibits positive temperature coefficient behavior: VF increases to approximately 1.15–1.18 V at 125°C junction temperature. This rise is confirmed by Fig.4 Typical Forward Characteristics curve in the SR802–SR820 datasheet Version J2105, and must be accounted for in worst-case conduction loss calculations.
Can SR820 be used in parallel configurations?
SR820 can be paralleled only with careful thermal and electrical balancing: matched VF bins, symmetrical PCB traces, and shared heatsinking are mandatory due to its positive temperature coefficient. The 100 µA reverse leakage at 25°C rises to 5 mA at 125°C, so mismatched thermal gradients may cause current hogging. Parallel use is not recommended unless validated per application-specific derating curves in the SR802–SR820 datasheet.
SR820 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1.02 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR820 FAQ
1.How can I place an order for SR820 through Aetrix?
Please submit a Request for Quotation (RFQ) for SR820 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 SR820 reliable?
The price and inventory of SR820 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR820 is usually 5 days.
3.What payment methods are accepted for SR820?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR820 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR820?
SR820 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR820 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 SR820?
For technical support, including SR820 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR820 requirements.
6.How does Aetrix verify that SR820 is sourced from the original manufacturer or authorized distributors?
All SR820 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 SR820 meets industry standards.
7.What is the process for return or replacement of SR820?
All SR820 units undergo pre-shipment inspection (PSI). If there is an issue with SR820, 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 SR820 part is unused and in its original packaging.
Return procedure for SR820:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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