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STMicroelectronics STPSC40G12WLY
- Part No.:
- STPSC40G12WLY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
STPSC40G12WLY.pdf
- Description:
- AUTOMOTIVE 1200 V, 40A POWER SCH
- Quantity:
- Payment:
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Inventory:200
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Product details
Overview
STPSC40G12WLY from STMicroelectronics is an AEC-Q101-qualified 1200 V, 40 A silicon carbide Schottky power diode in DO-247LL package, delivering negligible reverse recovery, temperature-independent switching, and 432 mJ single-pulse avalanche energy. It operates from −55 °C to +175 °C junction temperature and is optimized for high-efficiency boost PFC stages in on-board EV chargers.
For engineers reviewing the STPSC40G12WLY datasheet, STPSC40G12WLY pinout, STPSC40G12WLY application, or STPSC40G12WLY equivalent, key selection criteria include forward voltage (1.35 V typ. @ 25 °C), surge current capability (280 A @ 10 ms), thermal resistance (0.25 °C/W typ. j-c), reverse leakage (≤150 µA @ 175 °C), and capacitive charge (202 nC @ 800 V).
Technical Context
This SiC Schottky diode replaces conventional silicon fast recovery diodes in hard-switching topologies by eliminating minority-carrier storage and associated reverse recovery losses. Its wide band-gap material enables a 1200 V blocking rating with low VF and minimal temperature dependence across the full −55 °C to +175 °C operating range.
The device features robust avalanche energy rating (432 mJ), high surge capability (280 A, 10 ms sine), and low junction-to-case thermal resistance (0.25 °C/W typ.), enabling reliable operation under transient overload and high-power density thermal conditions in automotive and industrial charging systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Sustains full DC bus voltage in 1000 V-class EV charger and PFC designs without derating. |
| IF(AV) | 40 A @ Tc = 140 °C - Supports continuous conduction mode (CCM) PFC output currents up to 40 A with standard heatsinking. |
| VF (typ.) | 1.35 V @ 25 °C, 40 A - Reduces conduction loss vs. Si FRD (ΔP ≈ 0.8–1.2 W per diode at 40 A), improving system efficiency. |
| EAS | 432 mJ @ Tj = 25 °C - Withstands single-event overvoltage transients in unclamped inductive switching without failure. |
| Rth(j-c) | 0.25 °C/W (typ.) - Enables direct mounting to cold plates for high-power-density thermal management in OBC modules. |
| Cj | 3078 pF @ 0 V, 141 pF @ 800 V - Low capacitance minimizes turn-off dv/dt-induced displacement current and EMI generation. |
| QCj | 202 nC @ 800 V - Predictable capacitive charge simplifies snubber design and reduces switching loss in high-frequency PFC. |
Pinout & Package
STPSC40G12WLY is housed in a DO-247LL (long leads) package with two terminals: anode and cathode. The package uses epoxy meeting UL94 V0, supports conduction cooling, and requires 0.8 N·m recommended torque for mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to AC input or switch node in boost PFC; must handle 280 A surge and 1200 V reverse bias. |
| Cathode | Current exit point during forward conduction | Connected to DC bus capacitor; serves as high-side reference for gate drivers and sensing circuits. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability in HEV/EV on-board chargers and charging stations. |
| Negligible reverse recovery | Zero reverse recovery charge eliminates shoot-through risk and reduces EMI in synchronous rectifier and PFC designs. |
| Temperature-stable switching | No degradation in VF or Cj behavior from −55 °C to +175 °C - ensures consistent timing and loss profile across ambient extremes. |
| High surge robustness | 280 A non-repetitive surge (10 ms sine) withstands inrush and fault currents in grid-connected battery charging systems. |
| ECOPACK2 compliance | Meets RoHS and halogen-free requirements for automotive and industrial end-equipment environmental certification. |
Applications
| Boost PFC Stage | On-Board EV Charger (OBC) |
|---|---|
Use Scenario: Continuous-conduction-mode (CCM) boost converter in 6.6 kW single-phase OBC front-end. IC Role / Device Role / Timing Role: High-voltage output rectifier handling 40 A average current and 1200 V reverse stress. Use Value: Eliminates reverse recovery loss, reducing thermal load on heatsink by ~1.5 W per diode versus Si FRD at 100 kHz switching. |
Use Scenario: Bidirectional AC/DC conversion stage in dual-mode (AC/DC and DC/DC) OBC architecture. IC Role / Device Role / Timing Role: Unidirectional freewheeling path during active rectification, supporting >96% system efficiency. Use Value: Stable VF and Cj across −40 °C to +105 °C ambient enables consistent soft-switching behavior without control loop retuning. |
| EV Charging Station | Industrial 3-Phase PFC Module |
Use Scenario: 11 kW or 22 kW AC charging station with interleaved boost PFC using six-phase topology. IC Role / Device Role / Timing Role: Output rectifier in each boost leg, rated for 1200 V DC link and 40 A RMS current. Use Value: Avalanche energy rating (432 mJ) protects against line surge and DC-link overvoltage events during grid faults. |
Use Scenario: High-efficiency 3-phase active front-end in motor drive or UPS systems requiring >98% PFC efficiency. IC Role / Device Role / Timing Role: High-reliability output diode in multi-kW boost converters operating at 70–100 kHz. Use Value: Junction-to-case thermal resistance of 0.25 °C/W allows direct cold-plate mounting, reducing thermal interface layers and system footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SiC Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| C4D40120D (Wolfspeed) | Same 1200 V/40 A rating; VF = 1.55 V (typ. @ 25 °C); Rth(j-c) = 0.35 °C/W; no AEC-Q101 qualification. | Targeted at industrial UPS and solar inverters; not validated for automotive PPAP or temperature cycling per AEC-Q101. | Select when automotive qualification is unnecessary and higher VF is acceptable for cost-sensitive industrial designs. |
| SS120120A (ON Semiconductor) | 1200 V/40 A; VF = 1.45 V (typ.); Tj(max) = 175 °C; EAS = 320 mJ; AEC-Q101 qualified but no PPAP documentation available. | Suitable for EV traction auxiliary supplies but lacks full PPAP support required for OBC Tier-1 integration. | Choose where AEC-Q101 compliance suffices but formal PPAP submission is not mandated by OEM. |
Compared with C4D40120D and SS120120A, STPSC40G12WLY uniquely combines AEC-Q101 qualification, PPAP capability, lowest VF (1.35 V), and highest avalanche energy (432 mJ), making it the preferred choice for safety-critical, high-reliability automotive OBC and charging infrastructure.
Availability
STPSC40G12WLY is available at Aetrix Electronics and suitable for boost PFC, HEV/EV on-board battery chargers, and EV charging station designs requiring stable component supply, automotive-grade traceability, and long-term lifecycle assurance.
Supply support for STPSC40G12WLY 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
ST's SiC power diode product line targets high-efficiency, high-reliability power conversion in electric mobility and renewable energy systems, with emphasis on automotive qualification, thermal robustness, and hard-switching performance.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STPSC40G12WLY is rated for IF(AV) = 40 A at Tc = 140 °C, with absolute maximum junction temperature of +175 °C. Using the typical Rth(j-c) = 0.25 °C/W, sustained 40 A conduction results in ~10 °C junction-to-case rise, allowing safe operation up to 165 °C case temperature before reaching Tj(max). Derating is required above 140 °C case per Figure 5.
Does this diode require a gate driver or external control signal?
No - STPSC40G12WLY is a passive two-terminal Schottky diode with no gate terminal or control interface. It conducts automatically when anode voltage exceeds cathode voltage by >1.35 V, and blocks reverse current up to 1200 V. No driver, biasing, or timing circuitry is needed.
How does its avalanche rating compare to silicon diodes in overvoltage protection?
With 432 mJ single-pulse avalanche energy (tested per Figure 1), STPSC40G12WLY provides defined, repeatable clamping behavior during unclamped inductive switching - unlike most silicon diodes, which fail catastrophically under similar conditions. This enables use without external TVS or snubbers in well-designed PFC layouts.
Can it be paralleled with other STPSC40G12WLY units for higher current handling?
Yes - due to positive temperature coefficient of forward voltage, STPSC40G12WLY exhibits natural current sharing when paralleled. Layout symmetry, matched trace inductance, and individual thermal mounting are required. Derate total current by 15% for 2-unit parallel operation to ensure balanced thermal distribution and reliability.
STPSC40G12WLY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
STPSC40G12WLY FAQ
1.How can I place an order for STPSC40G12WLY through Aetrix?
Please submit a Request for Quotation (RFQ) for STPSC40G12WLY 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 STPSC40G12WLY reliable?
The price and inventory of STPSC40G12WLY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC40G12WLY is usually 5 days.
3.What payment methods are accepted for STPSC40G12WLY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC40G12WLY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPSC40G12WLY?
STPSC40G12WLY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPSC40G12WLY 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 STPSC40G12WLY?
For technical support, including STPSC40G12WLY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC40G12WLY requirements.
6.How does Aetrix verify that STPSC40G12WLY is sourced from the original manufacturer or authorized distributors?
All STPSC40G12WLY 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 STPSC40G12WLY meets industry standards.
7.What is the process for return or replacement of STPSC40G12WLY?
All STPSC40G12WLY units undergo pre-shipment inspection (PSI). If there is an issue with STPSC40G12WLY, 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 STPSC40G12WLY part is unused and in its original packaging.
Return procedure for STPSC40G12WLY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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