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Taiwan Semiconductor Corporation SR1202 A0G
- Part No.:
- SR1202 A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR1202 A0G.pdf
- Description:
- DIODE SCHOTTKY 20V 12A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,366
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Product details
Overview
SR1202 A0G from Taiwan Semiconductor is a 12A, 20V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (0.55 V at 12 A), high surge capability (320 A @ 8.3 ms), and AEC-Q101 qualification option. It serves as primary output rectifier in compact DC/DC converters for automotive infotainment power supplies.
For engineers reviewing the SR1202 A0G datasheet, SR1202 A0G pinout, SR1202 A0G application, or SR1202 A0G equivalent, key selection factors include its 20 V repetitive peak reverse voltage, 150 °C maximum junction temperature, thermal resistance (RθJL = 3 °C/W), and DO-201AD mechanical compatibility with high-density board layouts.
Technical Context
This discrete Schottky diode uses a single-die construction optimized for low conduction loss in medium-current switching applications. Its guard ring structure enhances ruggedness against transient overvoltage events, while pure tin-plated leads ensure reliable solderability per J-STD-002.
The device operates across -55 °C to +150 °C junction temperature range and delivers stable reverse leakage (<500 µA at 25 °C, <20 mA at 100 °C) under rated 20 V reverse bias. Thermal performance is characterized by RθJA = 24 °C/W (free air) and RθJL = 3 °C/W (lead-to-junction).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Current (IF) | 12 A continuous - supports sustained output stage current in 24–48 W SMPS designs |
| Repetitive Peak Reverse Voltage (VRRM) | 20 V - defines maximum blocking capability in low-voltage secondary-side rectification |
| Surge Peak Forward Current (IFSM) | 320 A @ 8.3 ms - withstands inrush and fault transients without failure |
| Forward Voltage (VF) | 0.55 V @ 12 A, 25 °C - reduces conduction loss and improves system efficiency |
| Junction Temperature Range (TJ) | -55 °C to +150 °C - enables operation in under-hood automotive environments |
| Junction-to-Lead Thermal Resistance (RθJL) | 3 °C/W - allows effective heat transfer to PCB copper or heatsink via lead frame |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; 1.10 g mass; UL 94V-0 molding compound; polarity indicated by visible cathode band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or ground return) |
| Cathode | Current exit point during forward conduction | Marked with band; tied to positive output rail and filter capacitor anode |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves avalanche ruggedness and prevents premature edge breakdown under voltage transients |
| AEC-Q101 qualified version available | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Low VF at high IF | 0.55 V @ 12 A minimizes I²R losses and thermal stress in space-constrained adapters |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives for industrial and automotive use |
Applications
| Automotive Infotainment Power Supply | USB-C PD Adapter Secondary Rectification |
|---|---|
Use Scenario: 12 V output stage of buck-derived converter powering head unit display and audio DSP. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacement - handles continuous 12 A DC output current with minimal voltage drop. Use Value: Enables >92% efficiency at full load and meets CISPR-25 conducted emissions limits due to soft reverse recovery. | Use Scenario: 20 V output rectifier in compact 65 W USB-C PD adapter with GaN primary-side switching. IC Role / Device Role / Timing Role: Low-loss output diode replacing MOSFET synchronous rectifier where gate drive complexity is undesirable. Use Value: Eliminates control circuitry while maintaining 0.55 V forward drop and supporting 320 A surge tolerance during hot-plug events. |
| Industrial PLC I/O Module Power | Telecom DC/DC Brick Auxiliary Rail |
Use Scenario: 24 V input to 5 V/3.3 V isolated DC/DC converter supplying sensor interface and communication ICs. IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier in flyback topology delivering up to 12 A peak current to local regulators. Use Value: Maintains stable output under wide ambient (-40 °C to +85 °C) due to low IR sensitivity and 150 °C TJ rating. | Use Scenario: Standby 3.3 V auxiliary rail generation in 48 V telecom brick using forward converter topology. IC Role / Device Role / Timing Role: Output rectifier handling intermittent 12 A loads during processor wake cycles. Use Value: Withstands repeated 8.3 ms surges up to 320 A without degradation, ensuring long-term reliability in burst-mode operation. |
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 | Same DO-201AD package, 20 V VRRM, but higher VF (0.62 V @ 12 A); no AEC-Q101 option | Limited to commercial-temp industrial use; not validated for automotive vibration or thermal cycling | Prefer SR1202 A0G when automotive qualification or lowest conduction loss is required |
| ON Semiconductor SB1220-E3/54 | 20 V VRRM, 12 A IF, but higher RθJA (30 °C/W); RoHS-compliant but not halogen-free | Suitable for cost-sensitive consumer adapters; less suitable for thermally constrained automotive modules | Choose SR1202 A0G for halogen-free requirement or tighter thermal design margins |
Compared with VS-12EWH02-M3 and SB1220-E3/54, SR1202 A0G offers the lowest forward voltage, AEC-Q101 qualification path, and halogen-free compliance - making it optimal for thermally demanding, safety-critical automotive and industrial power stages where efficiency and regulatory alignment are prioritized.
Availability
SR1202 A0G is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C PD adapters, and industrial PLC power modules requiring stable component supply and traceable sourcing.
Supply support for SR1202 A0G 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 computing markets since 1979.
The SR1202 A0G belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, low-VF secondary-side rectification in compact, thermally constrained switch-mode power supplies.
FAQ
What is the maximum junction temperature rating for SR1202 A0G?
The SR1202 A0G has a maximum junction temperature (TJ) rating of +150 °C in DC forward mode, with storage temperature ranging from -55 °C to +150 °C. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial settings where thermal management is critical. The device's RθJL of 3 °C/W further supports safe thermal dissipation into PCB copper or external heatsinks.
Does SR1202 A0G have AEC-Q101 qualification?
The SR1202 A0G itself is not AEC-Q101 qualified; however, the SR1202H variant (with "H" suffix) is explicitly AEC-Q101 qualified per the ordering information table. SR1202 A0G shares identical electrical and thermal specifications but lacks the extended reliability test validation required for automotive grade. Customers requiring AEC-Q101 should select SR1202HA0G or SR1202H.
What does the "A0G" suffix mean in SR1202 A0G?
The "A0G" suffix in SR1202 A0G indicates packaging configuration: "A0" denotes 500-piece ammo box packaging, and "G" signifies green (halogen-free) molding compound compliant with IEC 61249-2-21. This differs from tape-and-reel variants (e.g., SR1202) and AEC-Q101 versions (e.g., SR1202H). The "G" code confirms full halogen-free status, critical for automotive and industrial environmental compliance.
What is the forward voltage of SR1202 A0G at full rated current?
The SR1202 A0G exhibits a maximum forward voltage (VF) of 0.55 V at 12 A and 25 °C junction temperature, measured under pulsed conditions (PW = 0.3 ms). At elevated temperatures (e.g., 100 °C), VF decreases slightly due to negative temperature coefficient, supporting stable performance across operating ranges without thermal runaway.
Is SR1202 A0G compatible with lead-free reflow soldering processes?
Yes, SR1202 A0G features pure tin-plated leads that are fully compatible with lead-free reflow soldering per J-STD-002 requirements. Its DO-201AD package is rated for peak reflow temperatures up to 260 °C (JEDEC J-STD-020), and the UL 94V-0 molding compound ensures mechanical integrity during thermal cycling. Whisker growth is mitigated via JESD 201 Class 2 qualification.
SR1202 A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- 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 A0G FAQ
1.How can I place an order for SR1202 A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR1202 A0G 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 A0G reliable?
The price and inventory of SR1202 A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR1202 A0G is usually 5 days.
3.What payment methods are accepted for SR1202 A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR1202 A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR1202 A0G?
SR1202 A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR1202 A0G 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 A0G?
For technical support, including SR1202 A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR1202 A0G requirements.
6.How does Aetrix verify that SR1202 A0G is sourced from the original manufacturer or authorized distributors?
All SR1202 A0G 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 A0G meets industry standards.
7.What is the process for return or replacement of SR1202 A0G?
All SR1202 A0G units undergo pre-shipment inspection (PSI). If there is an issue with SR1202 A0G, 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 A0G part is unused and in its original packaging.
Return procedure for SR1202 A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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