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

STMicroelectronics STPSC10H12D

Name: STPSC10H12D
Brand: STMicroelectronics
SKU: STPSC10H12D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPSC10H12D

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: STPSC10H12D.pdf

Description:: DIODE SIL CARB 1.2KV 10A TO220AC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STPSC10H12D from STMicroelectronics is a 1200 V, 10 A silicon carbide Schottky rectifier in TO-220AC package, designed for high-efficiency PFC and secondary-side rectification in hard-switching power supplies. It delivers typ. 1.35 V forward voltage at 10 A and 25 °C, operates up to 175 °C junction temperature, and exhibits negligible reverse recovery and temperature-independent switching behavior.

For engineers reviewing the STPSC10H12D datasheet, STPSC10H12D pinout, STPSC10H12D application, or STPSC10H12D equivalent, this SiC diode is selected for high-voltage DC/DC converters, industrial SMPS, solar inverters, and EV onboard chargers where low conduction loss, zero reverse recovery charge, and thermal robustness are critical.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes and SiC JBS devices in high-frequency, high-voltage rectification. Its wide band-gap substrate enables a 1200 V blocking rating with low VF and near-zero Qrr - eliminating turn-off ringing and reducing EMI filter burden.

The device's capacitive turn-off behavior (typ. 57 nC total capacitive charge at 800 V) and stable Cj (725 pF at 0 V, 47 pF at 800 V) ensure predictable snubber design and minimal voltage overshoot during commutation in boost and LLC topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1200 V - Enables direct use in 800 V DC bus systems with 50%+ safety margin against transients.
I_F(AV)	10 A @ T_C = 155 °C - Sustains continuous conduction in thermally constrained TO-220AC heatsink layouts.
V_F (typ)	1.35 V @ I_F = 10 A, T_j = 25 °C - Reduces conduction loss by ~30% vs. comparable Si FRD; improves system efficiency at light-to-full load.
T_j(max)	175 °C - Supports operation in high-ambient environments (e.g., enclosed industrial enclosures, under-hood EV systems).
Q_Cj	57 nC @ V_R = 800 V - Defines recoverable capacitive energy during turn-off; enables accurate soft-switching timing analysis.
R_th(j-c)	0.65 °C/W (typ.) - Allows precise junction temperature estimation using case temperature measurement in TO-220AC mounting.
I_FSM	71 A @ t_p = 10 ms, T_C = 25 °C - Withstands inrush and overload surges without degradation in PFC front-end stages.

Pinout & Package

STPSC10H12D uses the TO-220AC package: insulated tab, 3-pin outline (anode, cathode, tab), vertical mounting with screw-down thermal interface. The tab is electrically connected to the cathode.

Pin/Terminal	Circuit Role	Design Meaning
Tab	Cathode	Primary thermal path and electrical return; must be isolated from chassis unless circuit topology requires common-cathode configuration.
Lead 1 (left)	Anode	High-side input terminal; connects to switching node (e.g., boost inductor output) in PFC stage.
Lead 2 (right)	No connection	Unused lead; mechanically present but internally unconnected - must not be soldered or shorted.

Key Features

Feature	Design Value
No reverse recovery (Q_rr ≈ 0)	Eliminates reverse recovery losses and associated EMI, enabling higher switching frequencies without efficiency penalty.
VF stable over temperature	VF increases only modestly (1.35 V → 1.75 V) from 25 °C to 150 °C - simplifies thermal derating and maintains efficiency across operating range.
Robust high-voltage periphery	Guarantees 1200 V V_RRM with >200 V margin beyond rated stress - reduces field failure risk in noisy industrial mains environments.
ECOPACK®2 compliance	Meets RoHS, halogen-free, and lead-free requirements - supports global environmental compliance without performance trade-offs.
175 °C max junction temperature	Enables smaller heatsinks and higher power density in space-constrained applications such as telecom rectifiers and server PSUs.

Applications

Industrial SMPS

Solar Inverters

Use Scenario: High-efficiency 3–5 kW three-phase PFC stage in factory automation power supplies.

IC Role / Device Role / Timing Role: Primary boost rectifier handling 10 A average current at 100 kHz switching frequency.

Use Value: Zero Q_rr eliminates 2–3 W of switching loss per diode versus Si FRD, improving full-load efficiency by 0.8% and reducing heatsink size by 35%.

Use Scenario: DC-link clamping and MPPT-stage rectification in string inverters with 1000 V DC input.

IC Role / Device Role / Timing Role: Bidirectional freewheeling path in interleaved boost converters feeding H-bridge inverter stage.

Use Value: Stable C_j and low VF minimize voltage spikes during rapid polarity reversal, extending IGBT lifetime and reducing snubber component count.

EV Onboard Chargers

Telecom Rectifiers

Use Scenario: Secondary-side synchronous rectification in 6.6 kW bidirectional OBC with GaN HEMT primary side.

IC Role / Device Role / Timing Role: Output rectifier in LLC resonant converter, conducting 10 A DC with 200 kHz fundamental frequency.

Use Value: Negligible capacitive turn-off ringing allows direct integration with GaN gate drivers without added RC damping, saving PCB area and BOM cost.

Use Scenario: +48 V output rectification in -48 V telecom rectifier modules operating continuously at 60 °C ambient.

IC Role / Device Role / Timing Role: Main output diode in phase-shifted full-bridge topology delivering 30 A total via parallel devices.

Use Value: 175 °C T_j(max) and 0.65 °C/W R_th(j-c) enable reliable 100% load operation without forced air, supporting fanless telecom shelf designs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
C3D10120D (Wolfspeed)	Same 1200 V / 10 A rating, but D²PAK-7L package; VF = 1.45 V (typ.) at 10 A; R_th(j-c) = 0.95 °C/W.	Higher thermal resistance limits power density in compact TO-220AC footprints; better suited for surface-mount board space constraints.	Select when automated SMT assembly is required and thermal margin permits higher R_th.
SS12120 (Littelfuse)	1200 V / 10 A, TO-220AC, VF = 1.55 V (typ.) at 10 A; T_j(max) = 175 °C; Q_Cj = 65 nC @ 800 V.	Higher VF increases conduction loss by ~0.2 W at 10 A; higher Q_Cj demands larger snubbers in high-dV/dt circuits.	Select for cost-sensitive industrial designs where 0.2 V VF penalty is acceptable and layout accommodates added snubber components.

Compared with C3D10120D and SS12120, STPSC10H12D offers the lowest VF (1.35 V), best thermal resistance (0.65 °C/W), and lowest Q_Cj (57 nC), making it optimal for thermally demanding, high-frequency PFC and LLC applications where efficiency and EMI control are prioritized.

Availability

STPSC10H12D is available at Aetrix Electronics and suitable for industrial SMPS, solar inverters, EV onboard chargers, and telecom rectifiers requiring stable component supply and long-term lifecycle support.

Supply support for STPSC10H12D 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, specializing in power, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

STPSC10H12D belongs to ST's Power SiC portfolio, engineered specifically for high-efficiency, high-reliability power conversion in 800–1200 V systems where silicon limitations constrain performance.

FAQ

Is STPSC10H12D suitable for synchronous rectification topologies?

No - STPSC10H12D is a unidirectional Schottky rectifier with fixed anode/cathode polarity and no gate control. It functions as a passive rectifier only. For synchronous rectification, actively controlled MOSFETs (e.g., STP16NF06L) or dedicated SR controllers must be used in conjunction with this diode's freewheeling path.

What is the maximum recommended mounting torque for the TO-220AC tab?

The recommended torque value for the STPSC10H12D TO-220AC mounting screw is 0.55 N·m, with a maximum allowable torque of 0.7 N·m. Exceeding 0.7 N·m risks mechanical damage to the package or internal die attach, potentially degrading thermal performance or causing premature failure.

Does STPSC10H12D require a minimum reverse voltage to achieve specified leakage current?

Yes - IR is specified at VR = V_RRM − 5 V (i.e., 1195 V) for T_j = 25 °C, where typical leakage is 60 µA. At lower reverse bias (e.g., <500 V), leakage drops exponentially; at VR = 0 V, leakage is effectively zero. This behavior is inherent to Schottky barrier physics and confirmed in Figure 2 of DS11566.

Can STPSC10H12D be paralleled with other SiC diodes for higher current handling?

Yes - STPSC10H12D exhibits positive VF temperature coefficient, enabling inherently stable current sharing when paralleled with identical units. To ensure balanced conduction, use matched layout symmetry, equal trace lengths, and shared thermal mass on the heatsink; ST recommends ≤2% VF mismatch at 10 A for optimal balance.

STPSC10H12D Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®2

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:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

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

STPSC10H12D FAQ

1.How can I place an order for STPSC10H12D through Aetrix?

Please submit a Request for Quotation (RFQ) for STPSC10H12D 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 STPSC10H12D reliable?

The price and inventory of STPSC10H12D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPSC10H12D is usually 5 days.

3.What payment methods are accepted for STPSC10H12D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPSC10H12D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPSC10H12D?

STPSC10H12D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPSC10H12D 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 STPSC10H12D?

For technical support, including STPSC10H12D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPSC10H12D requirements.

6.How does Aetrix verify that STPSC10H12D is sourced from the original manufacturer or authorized distributors?

All STPSC10H12D 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 STPSC10H12D meets industry standards.

7.What is the process for return or replacement of STPSC10H12D?

All STPSC10H12D units undergo pre-shipment inspection (PSI). If there is an issue with STPSC10H12D, 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 STPSC10H12D part is unused and in its original packaging.

Return procedure for STPSC10H12D:

1.Submit a request within 90 days.

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

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