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Taiwan Semiconductor Corporation SRF1050 C0G
- Part No.:
- SRF1050 C0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
SRF1050 C0G.pdf
- Description:
- DIODE ARR SCHOT 50V 10A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,102
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Product details
Overview
SRF1050 from Taiwan Semiconductor is a 10A, 50V repetitive peak reverse voltage Schottky barrier rectifier in ITO-220AB package, featuring 0.70 V max forward voltage at 5A/25°C, 120A surge capability, and junction-to-case thermal resistance of 3.5°C/W - deployed in high-efficiency DC-DC converters and industrial SMPS.
For engineers reviewing the SRF1050 datasheet, SRF1050 pinout, SRF1050 application, or SRF1050 equivalent, key selection criteria include its 50V VRRM, dual-die configuration, AEC-Q101 qualification option (SRF1050H), TJ = –55°C to +125°C rating, and UL recognition (E-326243).
Technical Context
The SRF1050 integrates two Schottky die in a single ITO-220AB thermally optimized package, enabling high-current conduction with low forward voltage drop and fast switching recovery. Its guard ring structure provides overvoltage protection, and matte tin-plated leads ensure J-STD-002 solderability.
Rated for 10A average forward current and 120A non-repetitive surge (8.3ms half-sine), it operates up to 125°C junction temperature with 3.5°C/W RθJC, supporting compact heatsink designs in space-constrained power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - maximum repetitive reverse blocking voltage; defines safe operating range in buck or flyback secondary-side rectification |
| IF | 10 A - continuous average forward current; supports high-power adapter and server PSU output stages |
| VF (max) | 0.70 V @ 5A, 25°C - low conduction loss enables >92% efficiency in 12V–48V DC-DC outputs |
| IFSM | 120 A - peak surge current handling; withstands inrush and transient overloads without failure |
| RθJC | 3.5 °C/W - thermal resistance from junction to case; allows direct mounting to heatsink with predictable temperature rise |
| IR (max) | 500 µA @ 50V, 25°C - low leakage preserves efficiency in standby and light-load conditions |
| TJ max | 125 °C - maximum junction temperature; enables operation in sealed industrial enclosures without forced air |
Pinout & Package
Package: ITO-220AB - isolated tab, TO-220 variant with enhanced thermal performance and UL 94V-0 molding compound; polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input terminal for first Schottky diode | Connected to high-side switch node in synchronous rectifier or input rail in dual-output configuration |
| Cathode Common | Shared cathode connection for both diodes | Provides single low-impedance return path; simplifies PCB layout and reduces parasitic inductance |
| Anode 2 | Input terminal for second Schottky diode | Enables dual independent rectification paths or parallel current sharing with matched thermal coupling |
| Tab (Case) | Electrically isolated mechanical mounting surface | Thermally conductive but electrically isolated; allows direct heatsink attachment without insulator or thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown under transient overvoltage, improving reliability in unregulated input rails |
| Dual-die configuration | Two independent Schottky junctions in one package reduce board area by ~40% vs. discrete dual-diode solutions |
| UL Recognized (E-326243) | Validates flammability, insulation, and construction compliance for end-equipment safety certification |
| AEC-Q101 qualified option (SRF1050H) | Meets stress-test requirements for automotive under-hood power modules including temperature cycling and HTRB |
| Halogen-free (IEC 61249-2-21) | Supports RoHS-compliant manufacturing and eliminates corrosive gas emission during reflow or field failure |
Applications
| Server Power Supply | Industrial DC-DC Converter |
|---|---|
Use Scenario: 48V input to 12V/5V POL conversion in rack-mounted servers. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement with low VF and fast recovery. Use Value: Reduces conduction loss by 35% vs. standard silicon diodes, lowering thermal load on VRM heatsinks. | Use Scenario: Isolated 24V-to-5V/3.3V conversion in PLC I/O modules. IC Role / Device Role / Timing Role: Output rectifier in forward or flyback topology with high ambient temperature tolerance. Use Value: Maintains <100 µA leakage at 100°C, preserving regulation accuracy during extended thermal stress. |
| Automotive Onboard Charger (OBC) | Telecom Rectifier Module |
Use Scenario: AC/DC front-end and DC/DC isolation stage in bidirectional OBC units. IC Role / Device Role / Timing Role: High-reliability rectifier in AEC-Q101-qualified SRF1050H variant. Use Value: Withstands 120A surge events during grid transients while meeting automotive vibration and thermal cycling specs. | Use Scenario: -48V telecom power shelf output rectification with redundant parallel strings. IC Role / Device Role / Timing Role: Dual-die configuration enables current sharing across two independent paths. Use Value: Eliminates need for external current-sharing resistors or separate diode packages, reducing BOM count and footprint. |
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-10BQ050 | Same ITO-220AB package, 10A/50V, VF = 0.62 V (typ) @ 5A - lower typical VF but no guard ring or UL recognition | Lacks AEC-Q101 option and UL file; suitable for commercial-grade telecom but not automotive or safety-critical SMPS | Prefer SRF1050 when overvoltage robustness or safety certification is required |
| ON Semiconductor MBR1050CT | TO-220AB package, dual common-cathode, VF = 0.75 V (max) @ 5A - higher VF, no AEC-Q101 option, RθJC = 4.0°C/W | Higher thermal resistance limits power density; not rated for 125°C continuous operation | Select SRF1050 for higher ambient temperature operation and tighter thermal design margins |
Compared with VS-10BQ050 and MBR1050CT, the SRF1050 delivers superior overvoltage protection via guard ring, certified UL recognition, and lower thermal resistance - making it optimal for high-reliability industrial and automotive power stages where long-term stability under surge and thermal stress is critical.
Availability
SRF1050 is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, and automotive onboard chargers requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SRF1050 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 SRF1050 belongs to TSC's high-current Schottky rectifier product line, engineered for efficiency-critical AC/DC and DC/DC power conversion where low VF, surge resilience, and thermal performance are prioritized.
FAQ
What is the maximum junction temperature rating for the SRF1050?
The SRF1050 has a maximum junction temperature (TJ) of +125°C under continuous operation. This rating applies to the standard SRF1050 variant; the AEC-Q101-qualified SRF1050H maintains the same TJ limit but adds validated reliability testing per automotive stress standards. Derating curves in the datasheet define allowable current reduction above 25°C ambient.
Does the SRF1050 have a common-cathode or common-anode configuration?
The SRF1050 uses a common-cathode configuration - both anodes are electrically isolated, and the cathodes are internally tied together and connected to the center pin and metal tab. This arrangement supports dual-output rectification or parallel current sharing with shared output filtering, as confirmed in the device marking diagram and pinout table.
Is the SRF1050 pin-compatible with the MBR1050CT?
No, the SRF1050 is not pin-compatible with the MBR1050CT. Although both use TO-220–family outlines, the SRF1050 employs ITO-220AB (electrically isolated tab), whereas the MBR1050CT uses standard TO-220AB (tab connected to cathode). Pin assignments differ: SRF1050 pin 1 = Anode 1, pin 2 = Cathode Common, pin 3 = Anode 2; MBR1050CT assigns pin 1 = Cathode, pins 2 & 3 = Anodes.
What is the reverse leakage current specification for the SRF1050 at 100°C?
At TJ = 100°C and rated VR = 50V, the SRF1050 specifies a maximum reverse leakage current (IR) of 10 mA per diode. This value is measured under pulse conditions (PW = 30 ms) and reflects real-world behavior in high-temperature DC-DC converter outputs where thermal management is constrained.
Can the SRF1050 be used in place of a single-diode Schottky like the SS1050?
The SRF1050 can replace a single-diode Schottky such as the SS1050 only if the circuit requires dual-anode functionality or benefits from its common-cathode architecture. Its dual-die structure is not electrically equivalent to a single-diode part - using only one anode leaves the second diode unused and may introduce layout asymmetry. For single-path rectification, a dedicated single-diode part remains more appropriate.
SRF1050 C0G 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):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AB
SRF1050 C0G FAQ
1.How can I place an order for SRF1050 C0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SRF1050 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 SRF1050 C0G reliable?
The price and inventory of SRF1050 C0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRF1050 C0G is usually 5 days.
3.What payment methods are accepted for SRF1050 C0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRF1050 C0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRF1050 C0G?
SRF1050 C0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRF1050 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 SRF1050 C0G?
For technical support, including SRF1050 C0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRF1050 C0G requirements.
6.How does Aetrix verify that SRF1050 C0G is sourced from the original manufacturer or authorized distributors?
All SRF1050 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 SRF1050 C0G meets industry standards.
7.What is the process for return or replacement of SRF1050 C0G?
All SRF1050 C0G units undergo pre-shipment inspection (PSI). If there is an issue with SRF1050 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 SRF1050 C0G part is unused and in its original packaging.
Return procedure for SRF1050 C0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SRF1050 C0G Tags
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BAV99-7-F
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BAT54C-7-F
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BAV99,215
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BAT54CLT1G
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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BAS40-04LT1G
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