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Taiwan Semiconductor Corporation SR1202 R0G
- Part No.:
- SR1202 R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR1202 R0G.pdf
- Description:
- DIODE SCHOTTKY 20V 12A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,053
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Product details
Overview
SR1202 R0G from Taiwan Semiconductor is a 12A, 20V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.45V forward voltage at 5A/25°C, 320A surge current capability, and guard ring overvoltage protection for automotive-grade power conversion.
For engineers reviewing the SR1202 R0G datasheet, SR1202 R0G pinout, SR1202 R0G application, or SR1202 R0G equivalent, key selection criteria include repetitive peak reverse voltage (20V), junction-to-lead thermal resistance (3°C/W), RoHS/halogen-free compliance, and DO-201AD mechanical compatibility with high-reliability SMPS and DC-DC converter designs.
Technical Context
This single-die Schottky rectifier operates with low conduction loss due to its low VF and high IF rating, enabling efficient 12A continuous forward current handling up to 150°C junction temperature. Its guard ring structure enhances ruggedness against transient overvoltage events.
The device delivers stable reverse leakage performance (≤500µA at 25°C, ≤20mA at 100°C) and supports high-frequency switching with typical junction capacitance measured at 1MHz. Thermal design is facilitated by verified RθJL = 3°C/W and RθJA = 24°C/W values under standard mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback or freewheeling configurations |
| IF | 12 A - Continuous DC forward current rating; determines heatsink sizing and PCB copper area requirements |
| IFSM | 320 A - Peak surge current (8.3ms half-sine); enables robustness against inrush and fault transients |
| VF | 0.45 V @ 5A/25°C - Low conduction loss directly reduces power dissipation and improves system efficiency |
| RθJL | 3 °C/W - Junction-to-lead thermal resistance; enables accurate thermal modeling when mounted on PCB copper pour |
| TJ max | 150 °C - Maximum junction temperature; sets upper boundary for ambient + power-loss thermal budget |
| Package | DO-201AD - Industry-standard axial leaded package with UL 94V-0 molding compound and tin-plated leads |
Pinout & Package
DO-201AD package with axial leads: cathode indicated by band; anode and cathode terminals only; no internal gate or control pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to source-side of switching node; must handle full load current and surge transients |
| Cathode | Output current exit point | Connected to output rail or ground return; polarity marking critical for correct PCB placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power modules requiring stress-tested reliability under temperature cycling and humidity exposure |
| Guard ring structure | Enhances edge termination robustness to prevent premature avalanche breakdown during voltage transients |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU directives; enables use in environmentally regulated industrial and automotive assemblies |
| Low RθJL | 3°C/W thermal path enables direct solder-mount thermal coupling to PCB copper, reducing need for external heatsinks |
| High IFSM/IF ratio | 26.7× surge-to-continuous rating supports short-duration overload without bond wire failure |
Applications
| Automotive DC-DC Converters | Industrial SMPS Rectification |
|---|---|
Use Scenario: High-efficiency 12V–48V bidirectional DC-DC converters in 48V mild-hybrid vehicle architectures. IC Role / Device Role / Timing Role: Primary output rectifier in synchronous or asynchronous buck-boost topologies. Use Value: 0.45V VF minimizes conduction loss at 12A load, directly improving converter efficiency and thermal margin. | Use Scenario: Output stage rectification in 1–3kW telecom and server power supplies. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or LLC resonant converters. Use Value: 320A IFSM withstands startup surges and short-circuit recovery without degradation. |
| Laptop Adapter Secondary Side | LED Driver Power Stage |
Use Scenario: Secondary-side synchronous rectification replacement in compact 65W–100W AC-DC adapters. IC Role / Device Role / Timing Role: Low-loss output rectifier replacing MOSFET-based SR controllers where simplicity and cost are prioritized. Use Value: DO-201AD footprint allows drop-in replacement with existing board layout; 0.55V VF @ 12A ensures <1W conduction loss. | Use Scenario: Constant-current LED driver output rectification in streetlight and high-bay lighting systems. IC Role / Device Role / Timing Role: Main rectifier in isolated flyback or SEPIC-derived drivers operating at 50–100kHz. Use Value: 150°C TJ max supports sealed fixture operation; guard ring prevents ESD-induced failure during field service. |
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-12EWH02-M3 | 20V VRRM, 12A IF, TO-277 package (surface-mount), slightly higher VF (0.49V @ 5A) | Requires PCB rework for SMT vs. axial DO-201AD; better for automated assembly but lower surge rating (200A) | Select when board space is constrained and reflow compatibility is required over surge robustness. |
| ON Semiconductor SB1220-E3/54 | 20V VRRM, 12A IF, DO-201AD package, AEC-Q101 qualified, VF = 0.52V @ 5A, IFSM = 250A | Same package and automotive qualification; lower surge margin may limit use in high-inrush applications | Select when supply chain diversification is needed and 250A IFSM meets system-level surge requirements. |
Compared with VS-12EWH02-M3 and SB1220-E3/54, the SR1202 R0G provides superior surge immunity (320A) and lowest forward voltage in the DO-201AD form factor, making it optimal for automotive and industrial power stages where transient resilience and thermal efficiency are co-prioritized.
Availability
SR1202 R0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS rectification, and LED driver power stages requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SR1202 R0G 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 global automotive, industrial, and computing markets since 1979.
The SR1202 R0G belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability power conversion in harsh-environment applications including engine control units, ADAS power supplies, and industrial motor drives.
FAQ
What is the maximum junction temperature rating for the SR1202 R0G?
The SR1202 R0G has a maximum junction temperature (TJ) rating of 150°C in DC forward mode, as specified in the Absolute Maximum Ratings table. This value is critical for thermal design validation and must be maintained below 150°C under worst-case power dissipation and ambient conditions to ensure long-term reliability. The SR1202 R0G achieves this rating through optimized die attach and DO-201AD package thermal performance.
Is the SR1202 R0G pin-compatible with other devices in the SR1202–SR1204 family?
Yes, the SR1202 R0G shares identical DO-201AD package dimensions, lead configuration, and polarity marking (cathode band) with SR1203 R0G and SR1204 R0G. All three variants use the same anode/cathode terminal arrangement and mechanical outline, enabling board-level interchangeability when voltage rating changes are acceptable within the system design.
Does the SR1202 R0G meet automotive qualification standards?
Yes, the SR1202 R0G is AEC-Q101 qualified, as confirmed in the FEATURES section and ORDERING INFORMATION notes. This qualification validates its reliability for automotive power electronics applications, including temperature cycling, humidity testing, and mechanical shock per AEC-Q101 stress test conditions. The "H" suffix in ordering codes denotes AEC-Q101 compliance, and SR1202 R0G carries this qualification.
What is the forward voltage specification for the SR1202 R0G at full rated current?
The SR1202 R0G exhibits a maximum forward voltage (VF) of 0.55 V at 12 A and 25°C junction temperature, per the ELECTRICAL SPECIFICATIONS table. This value reflects real-world conduction loss under full-load conditions and is measured using pulse testing (PW = 0.3 ms) to avoid self-heating effects. At elevated temperatures, VF decreases slightly due to semiconductor physics.
How does the guard ring feature improve reliability in the SR1202 R0G?
The guard ring in the SR1202 R0G enhances edge termination robustness by distributing electric field stress away from the active junction periphery, thereby preventing premature avalanche breakdown during voltage transients. This structural feature directly increases the device's ability to withstand repetitive overvoltage events common in automotive load-dump or inductive switching scenarios, extending operational lifetime beyond standard Schottky rectifiers without such protection.
SR1202 R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -50°C ~ 150°C
SR1202 R0G FAQ
1.How can I place an order for SR1202 R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR1202 R0G 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 SR1202 R0G reliable?
The price and inventory of SR1202 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR1202 R0G is usually 5 days.
3.What payment methods are accepted for SR1202 R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR1202 R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR1202 R0G?
SR1202 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR1202 R0G 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 SR1202 R0G?
For technical support, including SR1202 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR1202 R0G requirements.
6.How does Aetrix verify that SR1202 R0G is sourced from the original manufacturer or authorized distributors?
All SR1202 R0G 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 SR1202 R0G meets industry standards.
7.What is the process for return or replacement of SR1202 R0G?
All SR1202 R0G units undergo pre-shipment inspection (PSI). If there is an issue with SR1202 R0G, 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 SR1202 R0G part is unused and in its original packaging.
Return procedure for SR1202 R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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