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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

STMicroelectronics STPSC10H12DY

Name: STPSC10H12DY
Brand: STMicroelectronics
SKU: STPSC10H12DY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC10H12DY

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: STPSC10H12DY.pdf

Description:: DIODE SIL CARB 1.2KV 10A TO220AC

Quantity:: RFQ Add To RFQ list

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Inventory:125

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Product details

Overview

STPSC10H12DY from STMicroelectronics is an AEC-Q101-qualified 1200 V, 10 A average forward current silicon carbide Schottky rectifier in TO-220AC package, featuring 1.35 V typical forward voltage at 10 A and negligible reverse recovery for hard-switching PFC and secondary-side rectification in automotive and industrial power supplies.

For engineers reviewing the STPSC10H12DY datasheet, STPSC10H12DY pinout, STPSC10H12DY application, or STPSC10H12DY equivalent, key selection criteria include junction-to-case thermal resistance (0.65 °C/W), 71 A non-repetitive surge capability, temperature-independent switching behavior, and ECOPACK®2 compliance for automotive-grade reliability.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes in high-voltage, high-frequency rectification where zero reverse recovery charge and stable VF over temperature are critical. Its wide band-gap construction enables 1200 V blocking with low conduction loss and minimal capacitive turn-off ringing.

Designed for operation from –40 °C to +175 °C junction temperature, it delivers robust performance under transient overload (71 A @ 10 ms) and maintains stable C_j (725 pF @ 0 V) and Q_Cj (57 nC @ 800 V), enabling predictable EMI behavior in boost PFC and LLC resonant converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1200 V - Enables direct use in 800 V DC-link systems with 50% voltage margin for surge immunity
I_F(AV)	10 A - Sustained conduction rating at T_C = 155 °C, defining heatsink sizing baseline
V_F(typ)	1.35 V @ 10 A, 25 °C - Low conduction loss reduces PFC stage power dissipation by ~30% vs. Si FRD
R_th(j-c)	0.65 °C/W - Enables compact thermal design with ≤13 W power dissipation before reaching 175 °C T_j
I_FSM	71 A @ 10 ms - Withstands inrush and short-circuit transients without degradation in automotive cold-crank scenarios
C_j	725 pF @ 0 V - Predictable high-frequency capacitance supports accurate snubber and EMI filter design
Q_Cj	57 nC @ 800 V - Quantifies capacitive turn-off charge, directly impacting switching loss in hard-switched topologies

Pinout & Package

TO-220AC package with isolated tab (case connected to cathode), single-sided heat transfer via metal tab, and three-terminal configuration optimized for through-hole mounting and mechanical stability in high-vibration environments.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to AC input or switch node; requires low-inductance layout to minimize voltage overshoot during di/dt transitions
Cathode	Forward current exit / case connection	Electrically tied to metal tab; must be thermally coupled to heatsink while maintaining isolation from chassis ground if required
Tab (Case)	Thermal path & cathode terminal	Provides primary heat conduction path; torque specification (0.55 N·m max) ensures consistent thermal interface pressure

Key Features

Feature	Design Value
No reverse recovery charge	Eliminates reverse recovery losses and associated EMI, enabling >100 kHz PFC operation without snubbers
Temperature-stable switching	VF and C_j variation <±10% from –40 °C to +175 °C, ensuring consistent timing and loss behavior across automotive ambient range
AEC-Q101 qualification	Validated for automotive powertrain and charging systems per stress test requirements including HTGB, HTRB, and TC2000
High surge robustness	71 A I_FSM at 10 ms supports repeated cold-crank and load-dump events without parameter drift
ECOPACK®2 compliance	Halogen-free, RoHS-compliant epoxy meets UL94 V0 flammability rating for safety-critical vehicle applications

Applications

On-Board Charger (OBC) PFC Stage

Industrial DC-DC Converter Secondary Rectification

Use Scenario: Boost PFC front-end in 11 kW OBC converting 3-phase AC to 800 V DC bus.

IC Role / Device Role / Timing Role: High-voltage output rectifier handling 10 A average current at 100–200 kHz switching frequency.

Use Value: Zero reverse recovery eliminates shoot-through risk in interleaved PFC and reduces heatsink volume by 40% vs. Si FRD.

Use Scenario: Isolated 48 V/12 V DC-DC converter in factory automation PLC power supply.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement operating at 300 kHz with 1200 V clearance requirement.

Use Value: Stable 1.35 V VF across –40 °C to +125 °C ambient ensures consistent efficiency in uncontrolled cabinet environments.

Solar Microinverter DC Link Clamp

EV Fast Charging Module Output Rectification

Use Scenario: Bidirectional clamp diode in H-bridge microinverter interfacing PV panel to 600–1000 V grid.

IC Role / Device Role / Timing Role: Voltage clamping and freewheeling path during dead-time intervals at 50 kHz.

Use Value: 1200 V V_RRM provides margin against reflected surge transients; 57 nC Q_Cj minimizes clamp energy dissipation.

Use Scenario: Output rectification in liquid-cooled 250 kW CCS DC fast charger module.

IC Role / Device Role / Timing Role: Primary high-voltage rectifier conducting 10 A continuous current at 175 °C junction temperature.

Use Value: 175 °C T_j(max) and 0.65 °C/W R_th(j-c) enable direct integration into cold-plate assembly without derating.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage SiC Schottky diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
C3D10120A (Wolfspeed)	Same 1200 V/10 A rating; VF = 1.5 V typ. @ 10 A; R_th(j-c) = 0.85 °C/W	Higher conduction loss and thermal resistance reduce efficiency in space-constrained OBCs	Prefer when legacy Wolfspeed footprint compatibility is required over optimal thermal performance
SS12120 (Littelfuse)	1200 V/10 A; VF = 1.45 V typ.; no AEC-Q101 qualification; T_j(max) = 175 °C	Lacks automotive qualification and PPAP documentation support for Tier 1 OEM programs	Select only for industrial-only designs where automotive compliance is not mandated

Compared with C3D10120A and SS12120, STPSC10H12DY offers the lowest VF (1.35 V), best thermal resistance (0.65 °C/W), and full AEC-Q101/PPAP readiness-making it the preferred choice for automotive-grade, thermally demanding PFC and DC-DC rectification.

Availability

STPSC10H12DY is available at Aetrix Electronics and suitable for on-board chargers, solar microinverters, EV fast-charging modules, and industrial DC-DC converters requiring stable component supply across automotive and harsh-environment production cycles.

Supply support for STPSC10H12DY 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, delivering intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.

This device belongs to ST's STPSC family of automotive-qualified SiC Schottky diodes, engineered specifically for high-efficiency, high-reliability rectification in 800 V+ power conversion systems where thermal stability and zero recovery are mandatory.

FAQ

Is STPSC10H12DY suitable for surface-mount assembly?

No. STPSC10H12DY uses the TO-220AC package with through-hole leads and an isolated metal tab designed for mechanical anchoring and conductive heatsinking. It is not compatible with reflow soldering or pick-and-place processes. For SMD alternatives, consider ST's D²PAK variant STPSC10H12GY-TR.

What is the maximum recommended case temperature for continuous operation?

The datasheet specifies I_F(AV) = 10 A at T_C = 155 °C. Operation above this temperature requires derating per Figure 3. At T_C = 175 °C, average forward current drops to approximately 6.5 A. Thermal design must ensure case temperature remains ≤155 °C under full-load conditions to maintain rated current.

Does STPSC10H12DY require a gate driver or external control signal?

No. As a passive Schottky diode, STPSC10H12DY operates autonomously with no control inputs. It conducts when anode voltage exceeds cathode voltage by >VF and blocks when reverse biased. No gate drive, biasing, or timing circuitry is needed-unlike MOSFETs or IGBTs.

How does its reverse leakage compare to silicon diodes at high temperature?

At T_j = 150 °C and V_R = V_RRM, IR is 30–400 µA-significantly higher than silicon but still within acceptable limits for high-voltage SiC diodes. This leakage is stable and predictable, unlike silicon's exponential increase near T_j(max), and does not impact system efficiency in typical PFC applications.

STPSC10H12DY Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®

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:: 1.5 V @ 10 A

Speed:: No Recovery Time > 500mA (Io)

Reverse Recovery Time (trr):: 0 ns

Current - Reverse Leakage @ Vr:: 60 µA @ 1200 V

Capacitance @ Vr, F:: 725pF @ 0V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

Operating Temperature - Junction:: -40°C ~ 175°C

STPSC10H12DY FAQ

1.How can I place an order for STPSC10H12DY through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC10H12DY 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 STPSC10H12DY reliable?

The price and inventory of STPSC10H12DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC10H12DY is usually 5 days.

3.What payment methods are accepted for STPSC10H12DY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC10H12DY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC10H12DY?

STPSC10H12DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC10H12DY 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 STPSC10H12DY?

For technical support, including STPSC10H12DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC10H12DY requirements.

6.How does Aetrix verify that STPSC10H12DY is sourced from the original manufacturer or authorized distributors?

All STPSC10H12DY 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 STPSC10H12DY meets industry standards.

7.What is the process for return or replacement of STPSC10H12DY?

All STPSC10H12DY units undergo pre-shipment inspection (PSI). If there is an issue with STPSC10H12DY, 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 STPSC10H12DY part is unused and in its original packaging.

Return procedure for STPSC10H12DY:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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