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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

STMicroelectronics STPS2030CT

Name: STPS2030CT
Brand: STMicroelectronics
SKU: STPS2030CT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS2030CT

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-220-3

Datasheet:: STPS2030CT.pdf

Description:: DIODE ARRAY SCHOT 30V 10A TO-220

Quantity:: RFQ Add To RFQ list

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Inventory:8,299

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Product details

Overview

STPS2030CT from STMicroelectronics is a 20 A, 30 V dual common-cathode Schottky rectifier in TO-220AC package, optimized for high-efficiency DC/DC conversion and OR-ing applications in telecom power supplies and industrial SMPS. It features low forward voltage (0.45 V at 10 A), low thermal resistance (2.5 °C/W junction-to-case), and operates up to 175 °C junction temperature.

For engineers reviewing the STPS2030CT datasheet, STPS2030CT pinout, STPS2030CT application, or STPS2030CT equivalent, key selection criteria include forward voltage drop at rated current, reverse leakage at elevated temperature, thermal performance under forced-air or heatsink mounting, and suitability for synchronous rectification replacement in 12 V and 24 V output rails.

Technical Context

The STPS2030CT integrates two independent Schottky diodes sharing a common cathode terminal, enabling parallel operation or dual-rail rectification without external interconnection. Its planar silicon structure ensures stable reverse recovery behavior with no stored charge, eliminating switching spikes in high-frequency converters.

Designed for continuous conduction mode (CCM) operation in secondary-side rectification, it supports peak repetitive reverse voltage (V_RRM) of 30 V and non-repetitive peak forward surge current (I_FSM) of 120 A, making it suitable for transient-heavy loads such as server VRMs and PoE injectors.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	30 V - Maximum allowable reverse bias before breakdown; sets upper limit for output bus voltage in 24 V systems.
I_F(AV)	20 A - Average forward current per diode at T_C = 110 °C; defines continuous load capability with adequate heatsinking.
V_F @ 10 A	0.45 V - Forward voltage drop determines conduction loss (4.5 W per diode at 10 A), directly impacting efficiency and thermal design.
I_R @ 30 V, 125 °C	1.5 mA - Reverse leakage current at max rated voltage and elevated temperature; affects standby power and thermal runaway risk.
R_thJC	2.5 °C/W - Junction-to-case thermal resistance; enables accurate heatsink sizing when mounted to aluminum baseplate or extrusion.
T_j max	175 °C - Maximum junction temperature; allows operation in high-ambient industrial environments without derating below 110 °C case temp.

Pinout & Package

Package: TO-220AC (3-pin, single-row, isolated tab). The metal tab is electrically connected to the cathode terminals and must be insulated from chassis ground unless referenced to system common.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode 1)	Input anode for first diode	Connects to transformer secondary or switch node; carries full load current of first channel.
Pin 2 (Cathode)	Common cathode node	Shared output terminal for both diodes; requires low-inductance connection to output capacitor bank.
Pin 3 (Anode 2)	Input anode for second diode	Independent input path-enables dual-output rectification or redundancy configuration.

Key Features

Feature	Design Value
Low V_F at high current	0.45 V @ 10 A reduces conduction loss by ~30% vs. standard silicon diodes, lowering thermal stress in compact power modules.
High T_j rating	175 °C operation enables use in sealed enclosures or high-ambient industrial settings without additional airflow.
Robust surge capability	120 A I_FSM withstands inrush and short-circuit transients in 48 V telecom systems without failure.
TO-220AC mechanical stability	Isolated tab and standardized footprint allow direct replacement of legacy rectifiers without PCB redesign.

Applications

Telecom DC/DC Converters

Industrial SMPS Outputs

Use Scenario: Secondary-side rectification in 48 V input / 12 V output isolated flyback or forward converters for base station power modules.

IC Role / Device Role / Timing Role: Power rectifier replacing MOSFET-based synchronous solutions where gate drive complexity is undesirable.

Use Value: Eliminates control circuitry while maintaining <92% efficiency at full load due to sub-0.5 V forward drop.

Use Scenario: Output rectification in 24 V industrial PLC power supplies operating continuously at 60 °C ambient.

IC Role / Device Role / Timing Role: High-reliability discrete rectifier handling 15–20 A steady-state current with minimal thermal cycling stress.

Use Value: 175 °C T_j rating avoids derating and extends service life beyond 10 years in fanless enclosures.

OR-ing Diode Arrays

Redundant Power Supplies

Use Scenario: Back-to-back diode configuration for hot-swap N+1 redundant 24 V inputs in network switches.

IC Role / Device Role / Timing Role: Unidirectional current valve preventing reverse current flow during module insertion/removal.

Use Value: Low V_F minimizes voltage drop across OR-ing path, preserving tight output regulation (<±1%) under load step.

Use Scenario: Dual-input 24 V power supply with automatic switchover between primary and backup AC-DC modules.

IC Role / Device Role / Timing Role: Isolation element ensuring fault containment between independent power sources.

Use Value: 120 A I_FSM handles momentary cross-conduction during switchover without thermal damage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-20CPH03	Same 20 A / 30 V rating but TO-247AC package; R_thJC = 1.8 °C/W; V_F = 0.49 V @ 10 A.	Better thermal performance but larger footprint; requires PCB rework for TO-220AC-to-TO-247AC transition.	Select when heatsink space permits and lower junction temperature is critical for long-term reliability.
ON Semiconductor MBR2030CT	Identical TO-220AC package and pinout; V_F = 0.52 V @ 10 A; I_R = 2.0 mA @ 125 °C.	Higher forward drop increases conduction loss by ~15%; otherwise drop-in compatible.	Acceptable for cost-sensitive designs where 0.07 V V_F penalty is tolerable and existing layout must be preserved.

Compared with VS-20CPH03 and MBR2030CT, the STPS2030CT delivers the lowest forward voltage in the TO-220AC form factor, optimizing efficiency in space-constrained 12–24 V outputs while maintaining compatibility with legacy thermal designs.

Availability

STPS2030CT is available at Aetrix Electronics and suitable for telecom power supplies, industrial SMPS outputs, OR-ing diode arrays, and redundant power supplies requiring stable component supply and consistent parametric performance across production batches.

Supply support for STPS2030CT 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The STPS series targets high-efficiency power conversion, with the STPS2030CT specifically engineered for low-voltage, high-current secondary-side rectification where thermal density and conduction loss dominate system-level efficiency.

FAQ

What is the maximum recommended case temperature for continuous operation?

The STPS2030CT is rated for continuous operation with case temperature (T_C) up to 110 °C. At this temperature, the device delivers its full 20 A average forward current per diode. Exceeding 110 °C requires linear derating per the datasheet curve, reaching zero current at 175 °C junction temperature.

Can STPS2030CT be used in parallel with another unit for higher current capacity?

Parallel operation is not recommended without external current-sharing resistors or matched thermal mounting. The device's positive temperature coefficient of forward voltage provides limited inherent balancing, but mismatched thermal paths can cause current hogging and premature failure of one unit.

Is the metal tab electrically isolated from the internal die?

No-the metal tab is internally connected to the common cathode terminal (Pin 2). When mounted to a heatsink, electrical isolation using mica washers or insulating pads is mandatory unless the cathode node is referenced to chassis ground in the system design.

Does STPS2030CT support lead-free soldering processes?

Yes-STPS2030CT is qualified for lead-free reflow soldering per JEDEC J-STD-020. Peak reflow temperature is 260 °C for 10 seconds maximum, with ramp rates and soak profiles compliant with standard Pb-free process windows.

STPS2030CT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 30 V

Current - Average Rectified (Io) (per Diode):: 10A

Voltage - Forward (Vf) (Max) @ If:: 500 mV @ 10 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 1 mA @ 30 V

Operating Temperature - Junction:: 150°C (Max)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STPS2030CT FAQ

1.How can I place an order for STPS2030CT through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS2030CT 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 STPS2030CT reliable?

The price and inventory of STPS2030CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2030CT is usually 5 days.

3.What payment methods are accepted for STPS2030CT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2030CT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS2030CT?

STPS2030CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS2030CT 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 STPS2030CT?

For technical support, including STPS2030CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2030CT requirements.

6.How does Aetrix verify that STPS2030CT is sourced from the original manufacturer or authorized distributors?

All STPS2030CT 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 STPS2030CT meets industry standards.

7.What is the process for return or replacement of STPS2030CT?

All STPS2030CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS2030CT, 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 STPS2030CT part is unused and in its original packaging.

Return procedure for STPS2030CT:

1.Submit a request within 90 days.

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

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