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Taiwan Semiconductor Corporation SR1202HB0G
- Part No.:
- SR1202HB0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR1202HB0G.pdf
- Description:
- DIODE SCHOTTKY 20V 12A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,037
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Product details
Overview
SR1202HB0G from Taiwan Semiconductor is a 12A, 20V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.55V max forward voltage at 12A/25°C, 320A surge capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and SMPS secondary-side rectification.
For engineers reviewing the SR1202HB0G datasheet, SR1202HB0G pinout, SR1202HB0G application, or SR1202HB0G equivalent, key selection criteria include its AEC-Q101 qualification, low VF under high IF, thermal resistance (RθJL = 3°C/W), and DO-201AD mechanical compatibility with high-reliability power conversion designs.
Technical Context
This discrete Schottky diode operates as a unidirectional power rectifier with single-die construction and cathode-band polarity marking. Its guard ring structure enhances ruggedness against transient overvoltage events, while pure tin-plated leads ensure J-STD-002 solderability and JESD201 Class 2 whisker resistance.
The device sustains 12A continuous forward current with junction temperature up to +150°C, supported by RθJA = 24°C/W and RθJL = 3°C/W. Reverse leakage remains ≤500 µA at 25°C and ≤20 mA at 100°C under rated VRRM = 20 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous) | 12 A - supports high-current output rails in compact SMPS designs without forced air cooling |
| VRRM | 20 V - rated for 24V nominal input systems with margin for transients |
| VF @ 12A/25°C | ≤0.55 V - reduces conduction loss and improves efficiency vs. standard PN diodes |
| IFSM (8.3ms) | 320 A - withstands high-energy inrush and fault currents in automotive power modules |
| RθJL | 3 °C/W - enables direct heat transfer to PCB copper or heatsink via lead frame |
| AEC-Q101 Qualified | Yes - validated for automotive underhood applications per stress test requirements |
Pinout & Package
DO-201AD axial-leaded package with cathode indicated by band; leads are pure tin-plated, compliant with J-STD-002 solderability and JESD201 Class 2 whisker testing. Weight ≈1.10 g.
| 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 switch node) |
| Cathode | Current exit point during forward conduction | Marked with band; ties to output rail or filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves avalanche ruggedness and prevents premature edge breakdown under repetitive overvoltage stress |
| Low VF at high IF | 0.55 V max at 12A/25°C directly lowers I²R losses and thermal load in high-density layouts |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics requiring extended temperature cycling and HTRB reliability |
| Halogen-free molding compound | Complies with IEC 61249-2-21, supporting RoHS and environmental compliance in OEM supply chains |
Applications
| Automotive DC-DC Converter | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in ADAS ECU with 150°C ambient requirement. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFET+driver, leveraging low VF for efficiency at light-to-moderate loads. Use Value: Enables >92% efficiency at 6A load while meeting AEC-Q101 reliability and eliminating gate-drive complexity. | Use Scenario: 48V-to-12V isolated flyback in factory automation PLC power supply. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode handling 12A continuous current with minimal thermal rise. Use Value: RθJL = 3°C/W allows direct PCB copper pour cooling, reducing need for external heatsinks. |
| Laptop Adapter Output Stage | Telecom DC-DC Module |
Use Scenario: 19V output rectification in compact 65W GaN-based adapter with 50°C ambient derating. IC Role / Device Role / Timing Role: High-current output rectifier operating in discontinuous conduction mode. Use Value: 320A IFSM rating absorbs startup surges without degradation, extending field life. | Use Scenario: 48V intermediate bus converter supplying 12V/10A to baseband processing boards. IC Role / Device Role / Timing Role: Primary output rectifier in forward topology with 20V reverse blocking requirement. Use Value: Guard ring design ensures stable operation during line transients common in telecom central offices. |
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), VF = 0.52V @ 12A | Requires rework of footprint and thermal pad layout; no axial-leaded option | Preferred where board space is constrained and SMT assembly is mandatory |
| ON Semiconductor SB1220-E3/54 | 20V VRRM, 12A IF, DO-201AD package, VF = 0.65V @ 12A, non-AEC-Q101 | Same mechanical fit but lacks automotive qualification and has higher conduction loss | Acceptable for industrial-only designs where AEC-Q101 is not required |
Compared with VS-12EWH02-M3 and SB1220-E3/54, SR1202HB0G uniquely combines AEC-Q101 qualification, DO-201AD axial form factor, and lowest VF in its class-making it optimal for automotive and high-reliability through-hole power supplies where thermal performance and qualification rigor are critical.
Availability
SR1202HB0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS, and telecom power modules requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for SR1202HB0G 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 consumer markets since 1979.
The SR1202HB0G belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in harsh-environment applications including engine control units and battery management systems.
FAQ
What is the maximum junction temperature rating for SR1202HB0G?
The SR1202HB0G has a maximum junction temperature (TJ) rating of +150°C in DC forward mode, with storage temperature range from –55°C to +150°C. This rating enables operation in under-hood automotive environments and high-ambient industrial power supplies where thermal management is constrained.
Is SR1202HB0G pin-compatible with other DO-201AD Schottky rectifiers?
Yes, SR1202HB0G uses the standard DO-201AD axial package with anode/cathode leads and cathode band marking-mechanically and electrically compatible with any DO-201AD rectifier. However, electrical parameters such as VF, IFSM, and AEC-Q101 status must be verified separately for functional equivalence.
Does SR1202HB0G meet halogen-free and RoHS requirements?
Yes, SR1202HB0G uses a halogen-free molding compound compliant with IEC 61249-2-21 and is fully RoHS compliant. Lead finish is pure tin, qualified to J-STD-002 for solderability and JESD201 Class 2 for whisker resistance-meeting stringent environmental and reliability standards for global OEMs.
What is the surge current rating of SR1202HB0G and how is it tested?
SR1202HB0G is rated for 320A peak non-repetitive forward surge current (IFSM) at t = 8.3ms (half-sine wave). This value is measured per JEDEC standards and reflects robustness against inrush, short-circuit, and lightning-induced transients in automotive and industrial power systems.
How does the guard ring feature improve reliability in SR1202HB0G?
The guard ring in SR1202HB0G redistributes electric field stress at the die edge, preventing premature avalanche breakdown during voltage transients. This structural enhancement increases ruggedness in real-world applications like automotive load-dump events and industrial motor drive regeneration spikes-directly improving long-term field reliability.
SR1202HB0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Bulk
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -50°C ~ 150°C
SR1202HB0G FAQ
1.How can I place an order for SR1202HB0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR1202HB0G 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 SR1202HB0G reliable?
The price and inventory of SR1202HB0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR1202HB0G is usually 5 days.
3.What payment methods are accepted for SR1202HB0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR1202HB0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR1202HB0G?
SR1202HB0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR1202HB0G 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 SR1202HB0G?
For technical support, including SR1202HB0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR1202HB0G requirements.
6.How does Aetrix verify that SR1202HB0G is sourced from the original manufacturer or authorized distributors?
All SR1202HB0G 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 SR1202HB0G meets industry standards.
7.What is the process for return or replacement of SR1202HB0G?
All SR1202HB0G units undergo pre-shipment inspection (PSI). If there is an issue with SR1202HB0G, 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 SR1202HB0G part is unused and in its original packaging.
Return procedure for SR1202HB0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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