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Taiwan Semiconductor Corporation SR202 A0G
- Part No.:
- SR202 A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SR202 A0G.pdf
- Description:
- DIODE SCHOTTKY 20V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,067
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Product details
Overview
SR202 A0G from Taiwan Semiconductor is a 2 A, 20 V Schottky barrier rectifier in DO-204AC (DO-15) package, featuring low forward voltage drop (max 0.55 V at 2 A, 25°C), 50 A surge capability, and junction temperature rating up to +125°C. It serves as a high-efficiency output rectifier in compact AC/DC adapters and DC-DC converters.
For engineers reviewing the SR202 A0G datasheet, SR202 A0G pinout, SR202 A0G application, or SR202 A0G equivalent, key selection criteria include its 20 V repetitive peak reverse voltage, 21.7°C/W junction-to-lead thermal resistance, AEC-Q101 qualification option (H suffix), RoHS/halogen-free compliance, and DO-15 mechanical compatibility with standard through-hole layouts.
Technical Context
This discrete Schottky diode uses a single-die construction with guard ring structure for overvoltage protection and meets JESD201 Class 2 whisker resistance. Its low VF enables reduced conduction loss in high-frequency switching topologies operating up to 10,000 V/µs dv/dt.
The device is rated for continuous forward current of 2 A at TA = 75°C (derated from 2 A at 25°C), with thermal performance defined by RθJL = 21.7°C/W and RθJA = 75.0°C/W - critical for thermal design in space-constrained power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - maximum repetitive reverse blocking voltage; defines safe operating range in low-voltage DC-DC outputs |
| IF | 2 A - continuous average forward current at TA = 25°C; derates to ~1.3 A at 75°C per curve data |
| VF (max) | 0.55 V @ 2 A, 25°C - enables <1.1 W conduction loss per diode at full load, improving system efficiency |
| IFSM | 50 A - non-repetitive surge rating for 8.3 ms half-sine; supports inrush and transient overload handling |
| TJ max | +125°C - maximum junction temperature; allows operation in sealed or thermally constrained enclosures |
| RθJL | 21.7°C/W - junction-to-lead thermal resistance; enables direct PCB copper pour thermal path design |
| IR (max) | 500 µA @ 20 V, 25°C - low leakage preserves standby power in energy-sensitive applications |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with cathode band marking. Leads are pure tin plated, solderable per J-STD-002, UL 94V-0 rated, and meet JESD201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail; polarity marking ensures correct orientation during manual or automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | Max 0.55 V at 2 A enables >92% rectifier efficiency in 5–12 V output SMPS designs |
| Guard ring overvoltage protection | Enhances ruggedness against voltage transients without external snubbers in adapter front-ends |
| High surge current capability | 50 A IFSM rating supports repeated cold-start surges in wall-plug adapters meeting IEC 61000-4-5 |
| RoHS and halogen-free | Complies with IEC 61249-2-21; eliminates brominated flame retardants for safer end-of-life processing |
Applications
| AC/DC Adapters | DC-DC Converters |
|---|---|
Use Scenario: 5–19 V output wall adapters for consumer electronics and IoT devices. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing conventional PN diodes to reduce heat and improve light-load efficiency. Use Value: 0.55 V VF cuts conduction loss by ~40% vs. 0.9 V Si diode, lowering thermal stress on PCB and enabling smaller heatsinks. | Use Scenario: Point-of-load (POL) converters in industrial controllers and embedded gateways. IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated flyback or forward topologies operating at 100–500 kHz. Use Value: 10,000 V/µs dv/dt rating prevents false triggering under fast-switching noise, ensuring stable regulation. |
| Automotive Infotainment Power | USB-C PD Auxiliary Rails |
Use Scenario: 12 V input–5 V/3.3 V auxiliary rails in head units and display modules. IC Role / Device Role / Timing Role: Input rectifier for internal buck converters fed from vehicle battery via EMI filter. Use Value: AEC-Q101 qualified variants (SR202H) available; this SR202 A0G shares identical die and thermal specs for non-automotive use cases. | Use Scenario: Secondary-side rectification in compact USB-C PD 20 W (5 V/3 A, 9 V/2.22 A) adapters. IC Role / Device Role / Timing Role: Low-VF, low-leakage rectifier enabling <30 mW no-load power consumption. Use Value: 500 µA IR at 25°C minimizes standby drain, supporting Energy Star Level VI and CoC Tier 2 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay SS22HE3_A/H | Same 2 A / 20 V rating, DO-214AA (SMA) package, VF = 0.52 V typ, but surface-mount only | Requires rework of PCB layout; not compatible with through-hole DO-15 footprint | Select if migrating to SMT for higher density or automated assembly; verify thermal pad layout for RθJA |
| ON Semiconductor SB220-E3/54 | 2 A / 20 V, DO-201AD package, VF = 0.54 V max, RθJA = 65°C/W (better ambient dissipation) | Larger DO-201AD body increases board area; leads spaced wider than DO-15 | Prefer when ambient cooling dominates over lead conduction; verify mechanical clearance in tight enclosures |
Compared with SS22HE3_A/H and SB220-E3/54, the SR202 A0G offers optimal fit for legacy DO-15 through-hole designs requiring low-cost, high-volume manufacturability and proven thermal performance via lead conduction (RθJL = 21.7°C/W).
Availability
SR202 A0G is available at Aetrix Electronics and suitable for AC/DC adapters, DC-DC converters, and USB-C PD auxiliary rails requiring stable component supply, consistent DO-15 form factor, and RoHS-compliant manufacturing.
Supply support for SR202 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 global power, automotive, and industrial markets since 1979.
The SR202 A0G belongs to TSC's SR202–SR220 Schottky rectifier family, engineered specifically for high-efficiency, low-profile AC/DC and DC/DC power conversion where low VF, robust surge handling, and reliable through-hole assembly are prioritized.
FAQ
What is the maximum junction temperature rating for SR202 A0G?
The SR202 A0G has a maximum junction temperature (TJ max) of +125°C, as specified in the Absolute Maximum Ratings table. This rating applies under steady-state conditions with proper PCB thermal design - including adequate copper pour on anode/cathode pads - and must be verified against actual operating ambient and power dissipation using RθJL = 21.7°C/W.
Is SR202 A0G AEC-Q101 qualified?
No, SR202 A0G is not AEC-Q101 qualified. The "H" suffix (e.g., SR202H) denotes AEC-Q101 qualification per the Ordering Information table. SR202 A0G shares identical die and electrical specs but lacks the extended reliability testing required for automotive-grade use.
What does the "A0G" suffix mean in SR202 A0G?
The "A0G" suffix in SR202 A0G indicates DO-204AC (DO-15) packaging in 1,500-piece ammo box format, with green molding compound (per marking diagram). It does not imply AEC-Q101 qualification - that requires the "H" prefix (e.g., SR202HA0G).
Can SR202 A0G replace a 1N5819 in existing designs?
Yes, SR202 A0G is a direct DO-15 footprint replacement for 1N5819, offering identical package, polarity marking, and pinout. It improves performance with lower VF (0.55 V vs. 0.6 V typical), higher IFSM (50 A vs. 25 A), and tighter IR spec - provided layout thermal relief matches the 21.7°C/W RθJL requirement.
What is the reverse leakage current of SR202 A0G at 100°C?
At TJ = 100°C and VR = 20 V, the SR202 A0G exhibits a maximum reverse leakage current (IR) of 10 mA, as stated in the Electrical Specifications table. This value is critical for estimating standby power loss in high-temperature environments such as enclosed power adapters.
SR202 A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 2 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-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR202 A0G FAQ
1.How can I place an order for SR202 A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR202 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 SR202 A0G reliable?
The price and inventory of SR202 A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR202 A0G is usually 5 days.
3.What payment methods are accepted for SR202 A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR202 A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR202 A0G?
SR202 A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR202 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 SR202 A0G?
For technical support, including SR202 A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR202 A0G requirements.
6.How does Aetrix verify that SR202 A0G is sourced from the original manufacturer or authorized distributors?
All SR202 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 SR202 A0G meets industry standards.
7.What is the process for return or replacement of SR202 A0G?
All SR202 A0G units undergo pre-shipment inspection (PSI). If there is an issue with SR202 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 SR202 A0G part is unused and in its original packaging.
Return procedure for SR202 A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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