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Taiwan Semiconductor Corporation SRF1040HC0G
- Part No.:
- SRF1040HC0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
SRF1040HC0G.pdf
- Description:
- DIODE ARR SCHOT 40V 10A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,505
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Product details
Overview
SRF1040HC0G from Taiwan Semiconductor is a 10A, 40V AEC-Q101-qualified Schottky barrier rectifier in ITO-220AB package with dual-die configuration, 0.55V max forward voltage at 5A/25°C, 500µA max reverse leakage at 40V/25°C, and 120A surge capability - used in automotive-grade DC-DC converters and SMPS secondary-side rectification.
For engineers reviewing the SRF1040HC0G datasheet, SRF1040HC0G pinout, SRF1040HC0G application, or SRF1040HC0G equivalent, key selection criteria include its AEC-Q101 qualification, 40V VRRM rating, low VF for high-efficiency operation, thermal resistance of 3.5°C/W, and ITO-220AB mounting compatibility with 0.56 N·m torque limit.
Technical Context
This device implements a dual-die Schottky structure with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its junction temperature range spans –55°C to +125°C (rated) or +150°C (storage), supporting under-hood automotive environments.
Thermal performance is defined by RθJC = 3.5°C/W, enabling efficient heat transfer to heatsink-mounted PCBs. Reverse leakage remains ≤500 µA at 40V/25°C and ≤15 mA at 40V/100°C, confirming stable blocking behavior across operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum repetitive reverse voltage the device blocks without breakdown |
| IF | 10 A - continuous forward current rating at case temperature ≤75°C |
| IFSM | 120 A - non-repetitive surge current handling for 8.3 ms half-sine wave |
| VF (max) | 0.55 V @ 5A, 25°C - low conduction loss enabling >92% efficiency in 12V-output DC-DC stages |
| IR (max) | 500 µA @ 40V, 25°C - minimal leakage ensuring stable hold-off in standby modes |
| RθJC | 3.5 °C/W - thermal resistance from junction to case, critical for heatsink sizing |
| TJ max | 125 °C - maximum operating junction temperature for rated reliability |
Pinout & Package
Package: ITO-220AB - insulated TO-220 variant with isolated tab, UL 94V-0 molding compound, and 1.70g mass. Mounting torque limited to 0.56 N·m; polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input terminal for first Schottky die | Connected to input rail in dual-output or parallel configurations |
| Cathode (common) | Shared output node for both dies | Single low-impedance return path; requires robust PCB copper pour |
| Anode 2 | Input terminal for second Schottky die | Enables independent control or redundancy in fault-tolerant designs |
| Tab (isolated) | Thermal interface only (electrically isolated) | Mounts directly to heatsink without electrical short risk |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements including HTOL, TC, HTRB |
| Guard ring structure | Prevents edge breakdown at rated VRRM, improving long-term reliability under transient overvoltage |
| Dual-die configuration | Supports interleaved or redundant rectification paths without external paralleling components |
| Matte tin-plated leads | Ensures consistent solder wetting and intermetallic formation per J-STD-002 Class 2 |
| UL Recognized (E-326243) | Meets safety standards for end-equipment certification in industrial and automotive applications |
Applications
| Automotive DC-DC Converter | Industrial SMPS Secondary Side |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in ADAS ECU with 150kHz switching frequency. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacing MOSFETs to reduce gate drive complexity and conduction loss. Use Value: 0.55V VF enables >93% efficiency at 8A load, reducing thermal load on compact ECU housing. | Use Scenario: 48V-to-12V telecom power supply with dual-output requirement. IC Role / Device Role / Timing Role: Dual-anode configuration used for independent regulation of two isolated 12V rails. Use Value: Common-cathode layout simplifies PCB routing while maintaining channel isolation via separate anodes. |
| Laptop Adapter Output Stage | Server PSU Hold-Up Circuit |
Use Scenario: High-density 65W USB-C PD adapter with active clamp flyback topology. IC Role / Device Role / Timing Role: Secondary-side rectifier operating in discontinuous conduction mode (DCM). Use Value: Low IR (500 µA) minimizes no-load power draw, meeting Level VI efficiency requirements. | Use Scenario: 48V server PSU with 16ms hold-up time during AC dropout. IC Role / Device Role / Timing Role: Freewheeling diode in boost-derived hold-up stage during brownout events. Use Value: 120A IFSM withstands peak currents during capacitor recharge transients without degradation. |
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-10BQ040-M3/45 | Same 40V VRRM, 10A IF, but TO-220AC package (non-isolated tab); RθJC = 4.0°C/W | Requires insulating washer for heatsink mounting; higher thermal resistance limits power density | Select when cost sensitivity outweighs thermal performance and isolation needs |
| ON Semiconductor MBR1045CT | 45V VRRM, same ITO-220AB package, but VF = 0.70V (max) at 5A/25°C; not AEC-Q101 qualified | Suitable for commercial-grade SMPS but not automotive due to missing qualification and higher conduction loss | Select for non-automotive applications where 5V margin above 40V system rail is acceptable |
Compared with VS-10BQ040-M3/45 and MBR1045CT, the SRF1040HC0G delivers lower VF and certified automotive reliability in an electrically isolated package - making it optimal for space-constrained, thermally demanding, and safety-critical rectification roles.
Availability
SRF1040HC0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS secondary-side rectification, and high-reliability laptop adapter output stages requiring stable component supply and full traceability.
Supply support for SRF1040HC0G 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 computing markets since 1979.
The SRF10xx series targets high-efficiency, high-reliability power conversion in harsh environments - specifically engineered for AEC-Q101 compliance, low VF, and robust surge immunity in automotive and industrial rectifier applications.
FAQ
What does the 'H' suffix in SRF1040HC0G indicate?
The 'H' in SRF1040HC0G denotes AEC-Q101 qualification - confirming that the SRF1040HC0G has passed rigorous automotive stress tests including high-temperature operating life, temperature cycling, and highly accelerated stress testing. This makes the SRF1040HC0G suitable for under-hood and safety-critical vehicle systems where standard industrial diodes would not be approved.
Is the tab of SRF1040HC0G electrically isolated?
Yes, the tab of the SRF1040HC0G is electrically isolated per ITO-220AB construction - verified by UL recognition file E-326243 and TSC's mechanical drawings. This allows direct mounting to a grounded heatsink without short-circuit risk, unlike standard TO-220AC devices. The isolation supports simplified thermal design in high-voltage DC-DC topologies.
What is the maximum allowable mounting torque for SRF1040HC0G?
The maximum mounting torque for SRF1040HC0G is 0.56 N·m, as specified in TSC's mechanical data sheet. Exceeding this value risks cracking the epoxy molding compound or damaging internal wire bonds. Torque must be applied using calibrated tools during heatsink assembly to ensure reliable thermal contact without mechanical overstress on the SRF1040HC0G package.
How does SRF1040HC0G perform at elevated junction temperatures?
At TJ = 100°C, the SRF1040HC0G maintains IR ≤15 mA at rated 40V reverse bias - a critical parameter for standby efficiency in automotive modules. Its VF increases only modestly (typical +12% vs. 25°C), preserving conduction efficiency. The 125°C max TJ rating ensures sustained operation in ambient temperatures up to 85°C with appropriate heatsinking.
Can SRF1040HC0G replace SRF1040C0G in existing designs?
Yes, SRF1040HC0G is a direct replacement for SRF1040C0G with identical pinout, package, and electrical specs - the only difference is AEC-Q101 qualification added in the 'H' version. No PCB or thermal redesign is needed; however, qualification documentation and traceability records must be updated to reflect the automotive-grade status of the SRF1040HC0G.
SRF1040HC0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AB
SRF1040HC0G FAQ
1.How can I place an order for SRF1040HC0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SRF1040HC0G 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 SRF1040HC0G reliable?
The price and inventory of SRF1040HC0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRF1040HC0G is usually 5 days.
3.What payment methods are accepted for SRF1040HC0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRF1040HC0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRF1040HC0G?
SRF1040HC0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRF1040HC0G 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 SRF1040HC0G?
For technical support, including SRF1040HC0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRF1040HC0G requirements.
6.How does Aetrix verify that SRF1040HC0G is sourced from the original manufacturer or authorized distributors?
All SRF1040HC0G 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 SRF1040HC0G meets industry standards.
7.What is the process for return or replacement of SRF1040HC0G?
All SRF1040HC0G units undergo pre-shipment inspection (PSI). If there is an issue with SRF1040HC0G, 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 SRF1040HC0G part is unused and in its original packaging.
Return procedure for SRF1040HC0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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