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Diodes Incorporated DSC05120
- Part No.:
- DSC05120
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
DSC05120.pdf
- Description:
- DIODE SIL CARB 1.2KV 5A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:50
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Product details
Overview
DSC05120 from Diodes Incorporated is a 1200 V, 5 A silicon carbide Schottky diode in TO220AC (Type WX) package, designed for high-efficiency power conversion with low conduction loss and fast reverse recovery. It serves as a rectifier, freewheel diode, or blocking diode in PFC circuits, industrial motor drives, inverters, and UPS systems, operating reliably up to +175°C junction temperature.
For engineers reviewing the DSC05120 datasheet, DSC05120 pinout, DSC05120 application, or DSC05120 equivalent, key selection criteria include its 1.7 V max forward voltage at 5 A/25°C, 39.5 µA typical reverse leakage at 1200 V/25°C, positive temperature coefficient on VF, 60 A non-repetitive surge rating, and thermal resistance of 6 °C/W (junction-to-case).
Technical Context
This SiC Schottky diode eliminates minority-carrier storage, enabling zero reverse recovery charge (Qrr ≈ 0) and eliminating switching losses associated with bipolar diodes. Its wide-bandgap material delivers stable reverse leakage up to 175°C and enables operation at higher frequencies than silicon counterparts.
The device exhibits a positive temperature coefficient on forward voltage, supporting inherent current sharing in parallel configurations. Its 1200 V blocking capability and 60 A IFSM rating support robust operation in high-voltage DC-link and AC-DC front-end applications under transient stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Enables use in 800 V DC-link systems with 50% voltage margin for transients. |
| IO (avg) | 5 A - Continuous rectification capability at TC = 25°C; derates to ~3.5 A at TC = 100°C per curve. |
| VF (max) | 1.7 V @ 5 A, 25°C - Low conduction loss improves efficiency in high-current paths. |
| IR (typ) | 39.5 µA @ 1200 V, 25°C - Ultra-low leakage supports stable high-voltage blocking at room temperature. |
| RθJC | 6 °C/W - Enables thermal design with standard heatsinks; 10 W dissipation yields +60°C rise above case. |
| IFSM | 60 A (10 ms half-sine) - Withstands inrush and fault currents in SMPS and inverter DC-link protection. |
| QC | 18 nC @ VR = 400 V - Quantifies capacitive charge affecting snubber design and EMI in hard-switched topologies. |
Pinout & Package
Package: TO220AC (Type WX), 3-terminal through-hole package with isolated tab (cathode-connected tab). Mounting surface is electrically connected to cathode; anode and cathode leads are formed from annealed copper leadframe with matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab (Metal Surface) | Cathode | Electrically active cathode terminal; requires insulating washer if mounted to grounded heatsink. |
| Lead 1 (Left) | Anode | Primary anode connection; bent for PCB through-hole mounting. |
| Lead 2 (Right) | No Connect / Mechanical Support | Non-functional lead; provides mechanical stability and alignment during insertion. |
Key Features
| Feature | Design Value |
|---|---|
| Zero Qrr / Fast Recovery | Eliminates reverse recovery loss and associated EMI, enabling >100 kHz switching in PFC and LLC converters. |
| Positive VF Tempco | Enables stable parallel operation without external current-sharing resistors or active balancing. |
| High-Temp Stability | Leakage remains <387 µA at 1200 V/175°C - critical for under-hood or enclosed industrial environments. |
| Green RoHS Compliance | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets automotive and industrial environmental mandates. |
Applications
| Power Factor Correction (PFC) | Industrial Motor Drives |
|---|---|
Use Scenario: Boost-stage rectification in continuous conduction mode (CCM) PFC front-ends for 3 kW server PSUs. IC Role / Device Role / Timing Role: High-frequency output rectifier replacing silicon fast recovery diodes to reduce switching loss and thermal stress. Use Value: 1.7 V VF and zero Qrr cut conduction + recovery losses by ~35% vs. Si FRD, improving system efficiency from 95.2% to 96.4% at full load. | Use Scenario: Freewheel path in 3-phase IGBT inverter stages driving 7.5 kW induction motors. IC Role / Device Role / Timing Role: Anti-parallel freewheel diode across IGBTs, handling regenerative energy during PWM commutation. Use Value: 60 A IFSM and 175°C TJ rating allow reliable operation during motor stall and overload events without thermal runaway. |
| Uninterruptible Power Supplies (UPS) | Renewable Energy Inverters |
Use Scenario: DC-link blocking diode in double-conversion online UPS systems with 750 V nominal bus voltage. IC Role / Device Role / Timing Role: Bidirectional isolation element preventing backfeed during battery discharge and grid failure modes. Use Value: 1200 V VRRM provides 60% safety margin over 750 V bus, while 39.5 µA IR ensures minimal standby power drain over 10-year service life. | Use Scenario: String-level bypass diode in 1500 V photovoltaic combiner boxes for utility-scale solar farms. IC Role / Device Role / Timing Role: Hot-swap protection and reverse-current blocking during partial shading or module failure. Use Value: Stable 175°C operation and low IR enable reliable long-term field deployment in desert ambient conditions exceeding 65°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SiC Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| C3D05120 | Same 1200 V/5 A rating; TO220-2L package (no isolated tab); RθJC = 5.5 °C/W; VF = 1.65 V typ @ 5 A/25°C. | Requires insulated mounting hardware only if heatsink is grounded; slightly lower VF improves light-load efficiency. | Select when board layout allows direct tab-to-heatsink mounting and lower thermal resistance is prioritized. |
| SS12005 | 1200 V/5 A SiC Schottky; TO220AC package; VF = 1.8 V max @ 5 A/25°C; IR = 45 µA @ 1200 V/25°C; RθJC = 6.5 °C/W. | Higher VF and leakage increase conduction loss by ~8% at full load; identical footprint enables drop-in replacement. | Choose when supply chain diversification is required and minor efficiency trade-off is acceptable. |
Compared with C3D05120 and SS12005, the DSC05120 offers superior thermal resistance (6 °C/W) and lowest IR at 1200 V, making it optimal for thermally constrained, high-reliability industrial designs where leakage-driven aging must be minimized.
Availability
DSC05120 is available at Aetrix Electronics and suitable for power factor correction, industrial motor drivers, and uninterruptible power supplies requiring stable component supply and long-lifecycle support.
Supply support for DSC05120 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DSC05120 belongs to Diodes' high-voltage SiC Schottky diode product line, engineered specifically for high-efficiency, high-reliability power conversion in industrial, renewable energy, and enterprise infrastructure applications.
FAQ
Is the DSC05120 suitable for automotive applications?
No - the DSC05120 is not AEC-Q101 qualified and is not recommended for automotive use. Diodes Incorporated explicitly states that automotive-grade variants require separate qualification (PPAP, IATF 16949 manufacturing), and this part lacks those certifications. Use only in industrial, telecom, or enterprise power systems.
What is the maximum allowable case temperature for continuous operation?
The DSC05120 supports continuous operation up to +175°C case temperature, as confirmed by its TJ, TSTG rating of –55°C to +175°C and forward current derating curve showing usable current down to 0 A at 175°C. Thermal design must maintain TC ≤ 175°C under worst-case load and ambient conditions.
Does the TO220AC (Type WX) package have an electrically isolated tab?
Yes - the TO220AC (Type WX) package used for DSC05120 features an electrically isolated metal tab connected to the cathode. The tab is not internally shorted to the leads, allowing safe mounting to grounded heatsinks when used with an insulating washer and thermal pad.
Why is the DSC05120 marked "NOT RECOMMENDED FOR NEW DESIGNS"?
Diodes Incorporated issued this notice due to planned obsolescence or migration to newer-generation SiC diodes (e.g., improved VF, lower QC, or enhanced packaging). While fully functional and supported for existing designs, new projects should evaluate successors like the DSC05120H or contact Diodes for roadmap guidance before committing to long-term production.
DSC05120 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- SiC (Silicon Carbide) Schottky
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 5 A
- Speed:
- No Recovery Time > 500mA (Io)
- Reverse Recovery Time (trr):
- 0 ns
- Current - Reverse Leakage @ Vr:
- 190 µA @ 1200 V
- Capacitance @ Vr, F:
- 310pF @ 100mV, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO220AC (Type WX)
- Operating Temperature - Junction:
- -55°C ~ 175°C
DSC05120 FAQ
1.How can I place an order for DSC05120 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSC05120 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 DSC05120 reliable?
The price and inventory of DSC05120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSC05120 is usually 5 days.
3.What payment methods are accepted for DSC05120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSC05120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSC05120?
DSC05120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSC05120 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 DSC05120?
For technical support, including DSC05120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSC05120 requirements.
6.How does Aetrix verify that DSC05120 is sourced from the original manufacturer or authorized distributors?
All DSC05120 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 DSC05120 meets industry standards.
7.What is the process for return or replacement of DSC05120?
All DSC05120 units undergo pre-shipment inspection (PSI). If there is an issue with DSC05120, 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 DSC05120 part is unused and in its original packaging.
Return procedure for DSC05120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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