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Diodes Incorporated DSC10120
- Part No.:
- DSC10120
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
DSC10120.pdf
- Description:
- DIODE SIL CARB 1.2KV 10A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:42
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Product details
Overview
DSC10120 from Diodes Incorporated is a 1200 V, 10 A silicon carbide Schottky diode in TO220AC (Type WX) package, engineered for high-efficiency rectification with low conduction loss and fast reverse recovery. It serves as a freewheel or blocking diode in power inverters, industrial motor drives, and PFC stages operating up to +175°C junction temperature.
For engineers reviewing the DSC10120 datasheet, DSC10120 pinout, DSC10120 application, or DSC10120 equivalent, key selection criteria include its 1.7 V max forward voltage at 10 A/25°C, 6.9 µA typical leakage at 1200 V/25°C, 2 °C/W junction-to-case thermal resistance, and robust 120 A non-repetitive surge rating - all critical for high-temperature, high-reliability power conversion designs.
Technical Context
The DSC10120 leverages SiC Schottky barrier technology to eliminate minority-carrier storage, enabling zero reverse recovery charge (Qrr ≈ 0) and eliminating switching tail current. Its positive temperature coefficient on VF ensures inherent current sharing in parallel configurations.
Designed for unidirectional DC blocking and rectification, it operates with a 1200 V peak repetitive reverse voltage and sustains 10 A average forward current at TC = 25°C, derating linearly to ~4.5 A at TC = 150°C per the published derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Withstands 1200 V DC or peak AC reverse voltage without breakdown, enabling use in 800 V DC bus systems with margin. |
| IO (avg) | 10 A - Sustains continuous 10 A forward current at case temperature ≤25°C; requires heatsinking above 25°C per derating curve. |
| VF (max) | 1.7 V @ 10 A, 25°C - Low conduction loss reduces power dissipation vs. Si PN diodes, improving system efficiency in high-frequency SMPS. |
| IR (typ) | 6.9 µA @ 1200 V, 25°C - Ultra-low leakage enables stable blocking performance in high-voltage PFC and UPS hold-up circuits. |
| RθJC | 2 °C/W - Enables predictable thermal design when mounted on finned heatsink (50×50×22 mm), supporting high-power density layouts. |
| IFSM | 120 A @ 10 ms half-sine - Withstands short-duration line surges and inrush currents in motor drive and inverter DC-link protection. |
| QC | 39 nC @ VR = 400 V, 25°C - Capacitive charge directly impacts turn-off losses in hard-switched topologies; lower than Si counterparts. |
Pinout & Package
Package: TO220AC (Type WX) - Industry-standard 3-lead through-hole package with isolated tab (pin 3), matte tin-plated copper leadframe, UL 94V-0 molded plastic body, and 1.868 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry | Connected to high-side switching node (e.g., IGBT collector) in freewheel path; must handle full load current and surge. |
| Cathode (Pin 2) | Forward current exit / output reference | Connects to DC bus return or low-side switch; defines common reference for gate drivers and sensing circuits. |
| Tab (Pin 3) | Thermal & electrical connection to cathode | Electrically tied to cathode; provides primary thermal path to heatsink - requires insulating washer if mounting to grounded metal. |
Key Features
| Feature | Design Value |
|---|---|
| SiC Schottky construction | Zero reverse recovery charge (Qrr ≈ 0), eliminating switching losses and EMI from tail current in hard-switched converters. |
| Positive VF temperature coefficient | Enables stable parallel operation without external current-sharing resistors or active balancing circuitry. |
| High-temperature operation | Junction rated to +175°C, supporting compact thermal design in enclosed industrial enclosures without forced air cooling. |
| Low IR at high VR | 6.9 µA leakage at 1200 V/25°C and <640 µA at 1200 V/175°C - maintains DC-link stability under thermal stress in UPS and solar inverters. |
| Lead-free & halogen-free | RoHS 3 compliant (2015/863/EU), <900 ppm Br/Cl, <1000 ppm Sb - meets automotive and industrial environmental compliance requirements. |
Applications
| Power Factor Correction (PFC) | Industrial Motor Drives |
|---|---|
Use Scenario: Boost PFC stage in 3 kW server PSU or telecom rectifier operating at 100–300 kHz switching frequency. IC Role / Device Role / Timing Role: Fast-recovery output rectifier handling 10 A average current and 1200 V DC-link voltage. Use Value: 1.7 V VF minimizes conduction loss; near-zero Qrr eliminates switching loss and reduces MOSFET voltage overshoot during turn-off. | Use Scenario: Freewheel diode across IGBTs in 7.5 kW VFD output stage with 1200 V DC bus and 10 kHz PWM. IC Role / Device Role / Timing Role: Unidirectional current path during IGBT off-time, clamping inductive kickback energy. Use Value: 120 A IFSM withstands motor startup surges; +175°C TJ rating supports operation in sealed cabinet environments. |
| Uninterruptible Power Supplies (UPS) | Solar Power Inverters |
Use Scenario: Battery-charging rectifier and DC-link blocking diode in online double-conversion UPS with 1000 V DC bus. IC Role / Device Role / Timing Role: Bidirectional blocking device preventing battery discharge into AC input during outage. Use Value: 6.9 µA IR at 1200 V ensures minimal standby power loss; TO220AC mechanical robustness supports long-life field deployment. | Use Scenario: DC-side string protection and inverter bridge anti-parallel diode in 10 kW central solar inverter. IC Role / Device Role / Timing Role: Reverse-polarity blocking and freewheel path in H-bridge output stage with 1200 V PV string voltage. Use Value: 2 °C/W RθJC enables direct heatsink mounting without thermal interface pads; low CT (≤611 pF) reduces capacitive coupling noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon carbide Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPSC10H12D | Same 1200 V/10 A rating; VF = 1.75 V max @ 10 A/25°C; RθJC = 2.1 °C/W; TO220AC package. | Higher VF increases conduction loss by ~30 mW at 10 A; identical thermal and surge capability. | Select when STMicroelectronics supply chain alignment or dual-sourcing is required; verify layout compatibility with minor footprint variance. |
| IXYS MDS10S120 | 1200 V/10 A; VF = 1.8 V max @ 10 A/25°C; RθJC = 2.3 °C/W; TO220AC package with insulated tab option. | Slightly higher thermal resistance requires larger heatsink area; insulated tab simplifies mounting but adds cost. | Prefer where electrical isolation between cathode and heatsink is mandatory without additional hardware. |
Compared with STPSC10H12D and MDS10S120, the DSC10120 offers the lowest VF (1.7 V) and best thermal resistance (2.0 °C/W), delivering superior efficiency in thermally constrained, high-current PFC and inverter applications - especially where parallel operation and long-term leakage stability are critical.
Availability
DSC10120 is available at Aetrix Electronics and suitable for power factor correction, industrial motor drives, and uninterruptible power supplies requiring stable component supply and long-lifecycle support.
Supply support for DSC10120 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 DSC10120 belongs to Diodes' high-voltage SiC Schottky diode product line, developed specifically for next-generation power conversion systems demanding high efficiency, high temperature reliability, and reduced EMI in industrial and renewable energy applications.
FAQ
Is the DSC10120 recommended for new designs?
No - Diodes Incorporated explicitly states "THE DSC10120 IS NOT RECOMMENDED FOR NEW DESIGNS. PLEASE CONTACT US." Customers initiating new projects should consult Diodes for qualified replacements such as the DSC10120H series or newer-generation SiC diodes with enhanced surge ratings and extended lifetime data.
What is the maximum allowable case temperature for continuous 10 A operation?
The DSC10120 sustains 10 A average forward current only at TC ≤ 25°C, per the forward current derating curve. At TC = 100°C, the rated IO drops to approximately 6.5 A; operation at full 10 A above 25°C requires active cooling or oversized heatsinking verified via thermal simulation.
Does the TO220AC (Type WX) package have an electrically isolated tab?
No - the tab (Pin 3) is internally connected to the cathode. Electrical isolation from the heatsink requires a mica or ceramic washer plus shoulder washers on the mounting screw. This configuration is standard for TO220AC devices unless specified as "insulated tab" variant (e.g., TO220AC-F).
How does the DSC10120's leakage current behave at elevated temperatures?
IR increases with temperature: 6.9 µA at 1200 V/25°C, 140 µA at 1200 V/175°C. This controlled rise - characteristic of SiC Schottky diodes - remains orders of magnitude lower than Si PN diodes, preserving DC-link integrity in high-temperature UPS and solar inverter applications.
DSC10120 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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 10 A
- Speed:
- No Recovery Time > 500mA (Io)
- Reverse Recovery Time (trr):
- 0 ns
- Current - Reverse Leakage @ Vr:
- 640 µA @ 1200 V
- Capacitance @ Vr, F:
- 611pF @ 100mV, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO220AC (Type WX)
- Operating Temperature - Junction:
- -55°C ~ 175°C
DSC10120 FAQ
1.How can I place an order for DSC10120 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSC10120 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 DSC10120 reliable?
The price and inventory of DSC10120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSC10120 is usually 5 days.
3.What payment methods are accepted for DSC10120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSC10120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSC10120?
DSC10120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSC10120 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 DSC10120?
For technical support, including DSC10120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSC10120 requirements.
6.How does Aetrix verify that DSC10120 is sourced from the original manufacturer or authorized distributors?
All DSC10120 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 DSC10120 meets industry standards.
7.What is the process for return or replacement of DSC10120?
All DSC10120 units undergo pre-shipment inspection (PSI). If there is an issue with DSC10120, 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 DSC10120 part is unused and in its original packaging.
Return procedure for DSC10120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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