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Taiwan Semiconductor Corporation SR4050PT C0G
- Part No.:
- SR4050PT C0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
SR4050PT C0G.pdf
- Description:
- DIODE ARR SCHOTT 50V 40A TO247AD
- Quantity:
- Payment:
- Shipping:
Inventory:4,815
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Product details
Overview
SR4050PT from Taiwan Semiconductor is a 40A, 50V Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring dual-die construction, 0.70V forward voltage at 20A/25°C, 400A surge capability, and AEC-Q101 qualification option. It serves as primary output rectifier in high-efficiency SMPS for industrial power supplies and DC-DC converters.
For engineers reviewing the SR4050PT datasheet, SR4050PT pinout, SR4050PT application, or SR4050PT equivalent, key selection criteria include repetitive peak reverse voltage (50 V), junction-to-case thermal resistance (1.2 °C/W), reverse leakage current (≤1000 µA at 25°C), operating junction temperature range (–55°C to +150°C), and TO-247AD mechanical compatibility with heatsink mounting.
Technical Context
This Schottky rectifier uses dual-die configuration to support parallel conduction paths within a single TO-247AD package, enabling higher current handling without paralleling discrete devices. Its guard ring structure provides overvoltage protection, and matte tin-plated leads meet J-STD-002 solderability standards.
The device operates across –55°C to +150°C junction temperature range with 1.2 °C/W junction-to-case thermal resistance, supporting high-power-density designs where thermal management is critical. Reverse leakage remains ≤1000 µA at 25°C and ≤20 mA at 100°C under rated VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe DC/peak AC input voltage limit before breakdown |
| IF | 40 A - Continuous forward current rating; determines steady-state power delivery capacity in rectification path |
| IFSM | 400 A - Non-repetitive surge current (8.3 ms half-sine); supports inrush and transient overload tolerance |
| VF | 0.70 V @ 20 A, 25°C - Forward voltage drop per diode; directly impacts conduction loss and thermal design |
| RθJC | 1.2 °C/W - Thermal resistance from junction to case; enables accurate heatsink sizing for 40 A continuous operation |
| TJ max | +150°C - Maximum allowable junction temperature; sets upper boundary for thermal derating curves |
| IR | ≤1000 µA @ VR=50 V, 25°C - Reverse leakage per diode; affects standby power and high-impedance circuit integrity |
Pinout & Package
Package: TO-247AD (TO-3P) - Isolated tab package with three terminals: Anode 1, Cathode (common), Anode 2. Mounting torque ≤1.13 N·m; polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input terminal for first Schottky die | Connects to high-side switching node or transformer secondary winding; carries half of total forward current |
| Cathode (Common) | Shared output node for both dies | Single low-impedance return path; simplifies PCB layout and reduces parasitic inductance in high-frequency rectification |
| Anode 2 | Input terminal for second Schottky die | Enables dual-path conduction; allows interleaved or phase-split rectification without external paralleling |
Key Features
| Feature | Design Value |
|---|---|
| Dual-die configuration | Two independent Schottky junctions in one TO-247AD package - eliminates layout complexity and mismatch risk of discrete paralleling |
| Guard ring structure | Integrated overvoltage protection - improves reliability under line transients and load dump conditions |
| AEC-Q101 qualification option | Available in H-suffix variant (SR4050PTH) - meets automotive-grade stress testing for under-hood power modules |
| UL Recognized (E-326243) | Complies with UL 94V-0 flammability standard - satisfies safety requirements for enclosed industrial power equipment |
| Matte tin-plated leads | Solderable per J-STD-002 - ensures robust reflow and wave solder joint integrity in high-volume manufacturing |
Applications
| Server Power Supply Rectification | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: Primary 12 V / 48 V output rectification in 80 PLUS Titanium server PSUs with >96% efficiency targets. IC Role / Device Role / Timing Role: Dual-die Schottky rectifier replacing synchronous MOSFETs in secondary-side topology to reduce gate drive complexity and EMI. Use Value: 0.70 V VF minimizes conduction loss at 40 A; 1.2 °C/W RθJC enables compact heatsink integration without forced air. | Use Scenario: 24 V isolated output stage in programmable logic controller (PLC) power modules operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: High-current freewheeling and rectification element in forward or flyback converter with wide input range (18–32 V DC). Use Value: 400 A IFSM withstands motor startup surges; –55°C to +150°C TJ range supports unventilated cabinet deployment. |
| Flat Panel TV Power Board | Telecom Rack Power Shelf |
Use Scenario: Main 12 V and 24 V rail rectification in slim-profile LCD/LED TV power supplies with strict height constraints. IC Role / Device Role / Timing Role: Low-VF Schottky solution replacing fast recovery diodes to cut standby losses below 0.5 W. Use Value: TO-247AD package fits standard heatsink footprints; 1000 µA IR at 25°C preserves light-load efficiency metrics. | Use Scenario: Redundant 54 V output rectification in -48 V telecom shelf systems requiring hot-swap and N+1 redundancy. IC Role / Device Role / Timing Role: Dual-anode configuration supports current sharing between parallel power modules without external ballast resistors. Use Value: Dual-die symmetry ensures matched thermal and electrical behavior; UL E-326243 recognition satisfies telecom safety audits. |
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-40CPH05 | Same 40 A / 50 V rating, TO-247AC package, 0.69 V VF @ 20 A, but single-die construction and no AEC-Q101 option | Lacks dual-die current sharing; requires external paralleling for equivalent reliability in high-surge environments | Preferred where cost sensitivity outweighs surge margin and automotive qualification needs |
| ON Semiconductor MBR4050CT | 40 A / 50 V, TO-220AB package, 0.72 V VF, single-die dual-common-cathode; no guard ring or UL recognition | Higher RθJC (2.5 °C/W), limited to ≤105°C TJ, unsuitable for sealed enclosures or automotive under-hood use | Appropriate for cost-driven consumer adapters with adequate airflow and lower reliability requirements |
Compared with VS-40CPH05 and MBR4050CT, the SR4050PT delivers superior surge resilience via dual-die architecture and broader thermal operating range, while its guard ring and UL recognition support safety-critical industrial and automotive deployments where single-point failure must be mitigated.
Availability
SR4050PT is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, flat-panel TV power boards, and telecom rack power shelves requiring stable component supply and long-term production continuity.
Supply support for SR4050PT 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The SR40xxPT series was developed to address high-current, high-reliability Schottky rectification needs in next-generation switched-mode power supplies, emphasizing thermal robustness, surge immunity, and qualification-readiness for harsh environments.
FAQ
What is the maximum junction temperature rating for SR4050PT?
The SR4050PT has a maximum junction temperature (TJ) rating of +150°C, with an operational range from –55°C to +150°C. This extended rating allows reliable use in sealed industrial enclosures and automotive under-hood applications where ambient temperatures exceed 105°C. The SR4050PT datasheet specifies derating curves starting at 25°C case temperature, and thermal design must account for its 1.2 °C/W junction-to-case resistance to maintain TJ ≤150°C under full 40 A load.
Does SR4050PT have AEC-Q101 qualification?
The base SR4050PT is not AEC-Q101 qualified; however, the variant SR4050PTH is explicitly qualified per AEC-Q101 Rev D. This H-suffix version undergoes stress testing including HTSL, TC, UHAST, and ESD per automotive requirements and is marked accordingly. For automotive power module designs requiring qualification evidence, SR4050PTH-not SR4050PT-must be specified and sourced.
What is the forward voltage drop of SR4050PT at rated current?
The SR4050PT exhibits a typical forward voltage (VF) of 0.70 V at 20 A and 25°C junction temperature, measured per diode under pulse test conditions (PW = 0.3 ms). At full 40 A DC current and elevated temperature (100°C), VF increases to approximately 0.78 V. This low VF directly reduces conduction losses compared to fast recovery diodes, improving overall system efficiency in high-current SMPS outputs.
How does the dual-die configuration of SR4050PT improve reliability?
The SR4050PT integrates two independent Schottky dies in a single TO-247AD package, enabling inherent current sharing and redundancy. If one die degrades under surge or thermal stress, the other maintains partial functionality-unlike single-die alternatives that fail open-circuit. This architecture also halves current density per die, reducing localized heating and electromigration risk, thereby extending lifetime in continuous 40 A operation with minimal derating.
What packaging and marking information applies to SR4050PT?
The SR4050PT is supplied in TO-247AD (TO-3P) package, packed 30 units per tube. Marking includes "SR4050PT" laser-etched on the device body, along with green compound indicator (G), date code (YWW), and factory code (F). Polarity is marked by cathode stripe; terminals are Anode 1, Common Cathode, and Anode 2. Mounting torque must not exceed 1.13 N·m to avoid case cracking or bond wire damage.
SR4050PT C0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 40A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 50 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AD (TO-3P)
SR4050PT C0G FAQ
1.How can I place an order for SR4050PT C0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR4050PT C0G 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 SR4050PT C0G reliable?
The price and inventory of SR4050PT C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR4050PT C0G is usually 5 days.
3.What payment methods are accepted for SR4050PT C0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR4050PT C0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR4050PT C0G?
SR4050PT C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR4050PT C0G 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 SR4050PT C0G?
For technical support, including SR4050PT C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR4050PT C0G requirements.
6.How does Aetrix verify that SR4050PT C0G is sourced from the original manufacturer or authorized distributors?
All SR4050PT C0G 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 SR4050PT C0G meets industry standards.
7.What is the process for return or replacement of SR4050PT C0G?
All SR4050PT C0G units undergo pre-shipment inspection (PSI). If there is an issue with SR4050PT C0G, 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 SR4050PT C0G part is unused and in its original packaging.
Return procedure for SR4050PT C0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SR4050PT C0G Tags
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