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Taiwan Semiconductor Corporation SR104HB0G
- Part No.:
- SR104HB0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SR104HB0G.pdf
- Description:
- DIODE SCHOTTKY 40V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,781
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Product details
Overview
SR104HB0G from Taiwan Semiconductor is a 1A, 40V AEC-Q101-qualified Schottky barrier rectifier in DO-204AL (DO-41) package, featuring 0.55V forward voltage at 1A/25°C, 30A surge capability, and guard ring overvoltage protection. It serves as primary output rectifier in automotive-grade DC-DC converters.
For engineers reviewing the SR104HB0G datasheet, SR104HB0G pinout, SR104HB0G application, or SR104HB0G equivalent, key selection criteria include its AEC-Q101 qualification, 40V VRRM rating, low VF for thermal efficiency, DO-41 mechanical compatibility, and 125°C maximum junction temperature in automotive power rails.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring termination to sustain high dv/dt (10,000 V/µs) and suppress avalanche failure under transient overvoltage. Its pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Thermal performance is defined by RθJA = 90°C/W, enabling 1A continuous operation up to 125°C ambient when mounted on standard FR-4 PCB with minimal copper area. Reverse leakage remains ≤500 µA at 25°C and ≤10 mA at 100°C under rated 40V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 12V/24V automotive DC-DC outputs |
| IF | 1 A - Continuous forward current rating; supports compact 1A power rail designs without forced air cooling |
| VF @ 1A, 25°C | 0.55 V - Low conduction loss; reduces power dissipation to 0.55W at full load, easing thermal management |
| IFSM | 30 A - Non-repetitive surge current capacity; withstands cold-start inrush and load dump transients |
| TJ max | 125 °C - Maximum junction temperature; enables operation in engine bay environments per AEC-Q101 stress test conditions |
| IR @ 40V, 25°C | ≤500 µA - Low reverse leakage; minimizes standby power loss in always-on vehicle modules |
| Package | DO-204AL (DO-41) - Standard axial leaded package; compatible with legacy through-hole assembly and automated taping |
Pinout & Package
DO-204AL (DO-41) package with axial leads: cathode indicated by band; anode and cathode terminals only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to positive side of input source (e.g., transformer secondary or switching node) |
| Cathode | Output current exit point | Connected to output filter capacitor and load; polarity marked by band on body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including temperature cycling, HTRB, and ESD testing per stress test plan |
| Guard ring structure | Prevents edge breakdown during voltage transients; improves reliability in unregulated SMPS front ends |
| Pure tin plating | Ensures robust solder joint formation and long-term intermetallic stability per J-STD-002 Class 2 |
| Halogen-free molding compound | Complies with IEC 61249-2-21; eliminates corrosive halogen emissions during reflow or field failure |
| UL 94V-0 flammability rating | Self-extinguishing encapsulant; meets automotive cabin and engine compartment fire safety standards |
Applications
| Automotive DC-DC Converter | Industrial Power Adapter |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in telematics control unit (TCU) with 1A output requirement. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFET in secondary-side regulation loop. Use Value: 0.55V VF reduces conduction loss by ~35% vs. silicon diode, lowering thermal stress on PCB near microcontroller. | Use Scenario: Universal input (90–264V AC) offline adapter for industrial sensors with 24V/1A isolated output. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in flyback topology. Use Value: 30A IFSM handles 100ms startup surges without derating; DO-41 footprint simplifies replacement of legacy rectifiers. |
| USB-C PD Power Delivery | LED Driver Power Stage |
Use Scenario: Secondary-side rectification in 20V/3A USB-C PD sink module with tight thermal envelope. IC Role / Device Role / Timing Role: High-efficiency output rectifier in quasi-resonant flyback stage. Use Value: ≤500 µA IR at 25°C ensures <1mW standby loss, supporting Energy Star Level VI compliance. | Use Scenario: Constant-current LED driver for automotive interior lighting with 40V bus and 1A channel. IC Role / Device Role / Timing Role: Freewheeling path for inductive energy recovery in buck-based dimming circuit. Use Value: 125°C TJ max allows direct mounting on aluminum heat sink without thermal derating in confined headliner space. |
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-1EQH04-M3/45 | Same 40V VRRM, 1A IF, but TO-277 surface-mount package; VF = 0.54V @ 1A | Requires SMT reflow process and board redesign; no axial lead compatibility | Select for space-constrained PCBs where DO-41 footprint is unavailable |
| ON Semiconductor SB140-T | 40V VRRM, 1A IF, DO-41 package, but not AEC-Q101 qualified; VF = 0.52V @ 1A | Lacks automotive qualification; limited to commercial/industrial use only | Select for cost-sensitive non-automotive applications requiring identical mechanical fit |
Compared with VS-1EQH04-M3/45 and SB140-T, SR104HB0G uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, and 0.55V VF-making it the only drop-in solution for legacy automotive power supplies requiring zero layout change and certified reliability.
Availability
SR104HB0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial power adapters, and USB-C PD power delivery systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SR104HB0G 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 SR102–SR115 Schottky rectifier family targets high-reliability power conversion in harsh environments, with design emphasis on AEC-Q101 compliance, low VF, and robust surge handling for automotive and industrial SMPS applications.
FAQ
What is the peak repetitive reverse voltage rating of SR104HB0G?
The SR104HB0G has a peak repetitive reverse voltage (VRRM) rating of 40 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version G2104), and defines the maximum DC or sinusoidal AC reverse voltage the device can block continuously without breakdown. It is critical for selecting appropriate input/output voltage margins in DC-DC and adapter designs using SR104HB0G.
Is SR104HB0G qualified for automotive applications?
Yes, SR104HB0G is AEC-Q101 qualified. The "H" suffix in the ordering code explicitly denotes AEC-Q101 qualification, and the datasheet confirms qualification per the full AEC-Q101 stress test plan-including temperature cycling, high-temperature reverse bias (HTRB), and ESD testing. This makes SR104HB0G suitable for under-hood and cabin automotive power systems.
What is the forward voltage drop of SR104HB0G at 1A and 25°C?
The forward voltage drop (VF) of SR104HB0G is 0.55 V at 1 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This value was measured under pulsed conditions (PW = 0.3 ms) and reflects typical conduction loss in real-world 1A power rails, directly impacting thermal design and efficiency calculations for SR104HB0G.
Does SR104HB0G have a guard ring structure?
Yes, SR104HB0G incorporates a guard ring structure for overvoltage protection. The datasheet explicitly lists "Guard ring for overvoltage protection" under FEATURES and confirms its role in suppressing edge breakdown during transient voltage events. This design feature enhances reliability in unregulated or loosely regulated switching power supplies where SR104HB0G is deployed.
What packaging options are available for SR104HB0G?
SR104HB0G is supplied in DO-204AL (DO-41) package with 3,000 units per ammo box (ordering code suffix A0G). The "H" indicates AEC-Q101 qualification and "B0G" denotes green (halogen-free) compound and tape-and-reel compatible marking. No tape-and-reel variant is listed for SR104HB0G specifically-only SR104H (tape-and-reel) and SR104HA0G (ammo box) are documented in the Ordering Information table.
SR104HB0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 1 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-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR104HB0G FAQ
1.How can I place an order for SR104HB0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR104HB0G 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 SR104HB0G reliable?
The price and inventory of SR104HB0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR104HB0G is usually 5 days.
3.What payment methods are accepted for SR104HB0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR104HB0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR104HB0G?
SR104HB0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR104HB0G 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 SR104HB0G?
For technical support, including SR104HB0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR104HB0G requirements.
6.How does Aetrix verify that SR104HB0G is sourced from the original manufacturer or authorized distributors?
All SR104HB0G 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 SR104HB0G meets industry standards.
7.What is the process for return or replacement of SR104HB0G?
All SR104HB0G units undergo pre-shipment inspection (PSI). If there is an issue with SR104HB0G, 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 SR104HB0G part is unused and in its original packaging.
Return procedure for SR104HB0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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