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Taiwan Semiconductor Corporation SR1204HB0G
- Part No.:
- SR1204HB0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR1204HB0G.pdf
- Description:
- DIODE SCHOTTKY 40V 12A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,768
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Product details
Overview
SR1204HB0G from Taiwan Semiconductor is a 12A, 40V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.55V max forward voltage at 12A/25°C, 320A surge current capability, and guard ring overvoltage protection - deployed in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the SR1204HB0G datasheet, SR1204HB0G pinout, SR1204HB0G application, or SR1204HB0G equivalent, key selection criteria include its 40V repetitive peak reverse voltage, AEC-Q101 qualification status, DO-201AD thermal resistance (RθJL = 3°C/W), and cathode-band polarity marking for reliable high-current rectification in harsh environments.
Technical Context
This discrete Schottky diode uses a single-die construction with pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker testing. Its guard ring structure enhances ruggedness against transient overvoltage events while maintaining low conduction loss.
Rated for continuous operation up to +150°C junction temperature and storage from –55°C to +150°C, the SR1204HB0G delivers stable performance under high ambient conditions typical of engine bay and industrial power supply applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum repetitive reverse blocking voltage without breakdown |
| IF | 12 A - continuous average forward current rating at case temperature ≤ 75°C |
| IFSM | 320 A - non-repetitive surge current handling for 8.3 ms half-sine wave |
| VF @ 12A | ≤ 0.55 V - low conduction loss enabling high-efficiency power conversion |
| RθJL | 3 °C/W - low junction-to-lead thermal resistance supports high-power dissipation |
| AEC-Q101 | Qualified - validated for automotive reliability per stress test requirements |
Pinout & Package
DO-201AD axial-leaded package with cathode band indicating terminal polarity; lead finish: pure tin, RoHS and halogen-free compliant; weight ≈ 1.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in rectifier configuration |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to positive output rail; blocks up to 40 V reverse voltage |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves avalanche ruggedness and prevents edge breakdown during voltage transients |
| Low VF at full load | Reduces conduction losses by >30% vs. standard PN rectifiers at 12A, lowering heatsink requirements |
| J-STD-002 solderability | Ensures robust wetting and joint integrity during automated reflow or wave soldering |
| UL 94V-0 molding compound | Provides flame-retardant encapsulation meeting safety standards for enclosed power systems |
Applications
| Automotive DC-DC Converters | Industrial SMPS |
|---|---|
Use Scenario: High-efficiency 12V-to-5V/3.3V conversion in ADAS ECUs and body control modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: AEC-Q101 qualification and 150°C TJMAX ensure long-term reliability under under-hood thermal cycling. | Use Scenario: Secondary-side rectification in open-frame 200–500W telecom and server PSUs. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or LLC resonant converters. Use Value: 320A IFSM withstands startup surges; RθJL = 3°C/W enables compact thermal design. |
| Laptop Adapters | Renewable Energy Inverters |
Use Scenario: Compact, high-density AC-DC adapters requiring low EMI and high efficiency. IC Role / Device Role / Timing Role: Output rectifier in high-frequency QR flyback designs operating above 100 kHz. Use Value: Low VF (≤0.55 V) minimizes conduction loss, improving efficiency beyond 90% at full load. | Use Scenario: Auxiliary power supply rectification in solar microinverters exposed to outdoor thermal extremes. IC Role / Device Role / Timing Role: Isolated auxiliary rail rectifier supplying gate drivers and sensing circuitry. Use Value: –55°C to +150°C operating range and halogen-free construction meet environmental compliance for outdoor deployment. |
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-12EWH04-M3 | Same DO-201AD package, 40V VRRM, but rated 12A at TC = 115°C (vs. SR1204HB0G at TC = 75°C); VF = 0.52 V typ @ 12A | Higher thermal derating margin; suited for forced-air-cooled layouts | Prefer when board-level airflow allows higher case temperature operation |
| ON Semiconductor MBR1240CT | TO-220AB dual common-cathode package; 40V VRRM, 12A per die; VF = 0.57 V max @ 12A; no AEC-Q101 qualification | Requires PCB footprint change and lacks automotive qualification | Select only for cost-sensitive industrial applications where AEC-Q101 is not required |
Compared with VS-12EWH04-M3 and MBR1240CT, the SR1204HB0G offers tighter thermal specification at lower case temperature, guaranteed AEC-Q101 compliance, and optimized RθJL for passive cooling - making it preferred for space-constrained automotive and industrial designs demanding proven reliability.
Availability
SR1204HB0G is available at Aetrix Electronics and suitable for automotive power modules, industrial SMPS, and high-reliability adapter designs requiring stable component supply across extended product lifecycles.
Supply support for SR1204HB0G 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 consumer markets since 1979.
The SR1204HB0G belongs to TSC's AEC-Q101-qualified Schottky rectifier family, engineered specifically for high-current, high-temperature rectification in automotive power systems and ruggedized industrial supplies.
FAQ
What is the peak repetitive reverse voltage rating for SR1204HB0G?
The SR1204HB0G has a peak repetitive reverse voltage (VRRM) rating of 40 V. This value is specified under standard test conditions and defines the maximum DC or repetitive reverse voltage the device can block continuously without breakdown. It is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version G2105).
Is SR1204HB0G qualified to AEC-Q101 standards?
Yes, SR1204HB0G is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in the ordering code and documented in the Features section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including HTGB, HTRB, and temperature cycling, validating its suitability for automotive under-hood applications.
What does the "B0G" suffix mean in SR1204HB0G?
In SR1204HB0G, "B0G" denotes packaging and environmental compliance: "B" indicates tape-and-reel packing (1,250 pcs/reel), "0" is a placeholder, and "G" signifies green (halogen-free) molding compound compliant with IEC 61249-2-21. This matches Taiwan Semiconductor's official ordering information table.
What is the maximum forward voltage drop of SR1204HB0G at full rated current?
The SR1204HB0G exhibits a maximum forward voltage drop (VF) of 0.55 V at 12 A and 25°C junction temperature, per the Electrical Specifications table. At elevated temperatures (e.g., 100°C), VF decreases slightly due to semiconductor physics, but the 0.55 V limit remains the design-critical worst-case value for thermal and efficiency calculations.
Does SR1204HB0G have a defined thermal resistance from junction to ambient?
Yes, SR1204HB0G has a junction-to-ambient thermal resistance (RθJA) of 24°C/W, measured under standard JEDEC test conditions (still air, on FR-4 board with 1 in² copper pad). This value guides heatsinking decisions when natural convection cooling is used, though RθJL = 3°C/W is more relevant for lead-mounted thermal paths.
SR1204HB0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 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 @ 40 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
SR1204HB0G FAQ
1.How can I place an order for SR1204HB0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR1204HB0G 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 SR1204HB0G reliable?
The price and inventory of SR1204HB0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR1204HB0G is usually 5 days.
3.What payment methods are accepted for SR1204HB0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR1204HB0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR1204HB0G?
SR1204HB0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR1204HB0G 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 SR1204HB0G?
For technical support, including SR1204HB0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR1204HB0G requirements.
6.How does Aetrix verify that SR1204HB0G is sourced from the original manufacturer or authorized distributors?
All SR1204HB0G 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 SR1204HB0G meets industry standards.
7.What is the process for return or replacement of SR1204HB0G?
All SR1204HB0G units undergo pre-shipment inspection (PSI). If there is an issue with SR1204HB0G, 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 SR1204HB0G part is unused and in its original packaging.
Return procedure for SR1204HB0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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