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Diodes Incorporated STPS2040
- Part No.:
- STPS2040
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
STPS2040.pdf
- Description:
- DIODE ARRAY GP 400V 10A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
STPS2040 from Diodes Incorporated is a 20A dual common-cathode super-fast rectifier diode rated for 400V peak reverse voltage, with 1.3V forward voltage at 10A/25°C, 35ns reverse recovery time, and 10µA reverse leakage at 400V/25°C, deployed in high-frequency DC-DC converters and SMPS secondary-side rectification.
For engineers reviewing the STPS2040 datasheet, STPS2040 pinout, STPS2040 application, or STPS2040 equivalent, key selection criteria include its ITO220AB package thermal resistance (3°C/W junction-to-case), 125A non-repetitive surge rating, low 80pF junction capacitance at 4V, and AEC-Q101 readiness for automotive power modules.
Technical Context
This dual-diode configuration shares a common cathode terminal, enabling synchronous or independent half-wave rectification in center-tapped or dual-output topologies. Its super-fast recovery (tRR = 35ns) minimizes switching losses in 100–500kHz power stages.
The glass-passivated die construction ensures stable reverse characteristics across -55°C to +150°C operating range, while the 3°C/W RθJC supports direct mounting to heatsinks in high-power density designs without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - blocks up to 400V reverse transient spikes in offline SMPS and industrial DC supplies |
| IO (per leg) | 10 A @ TC = 75°C - delivers 10A continuous DC current per anode under standard heatsink conditions |
| VF | 1.30 V @ 10A, 25°C - reduces conduction loss to ~13W per leg at full load, easing thermal design |
| tRR | 35 ns - enables efficient operation in >200kHz switching converters with minimal tail current loss |
| IR | 10 µA @ 400V, 25°C - ensures low standby power loss in high-impedance hold-up circuits |
| CT | 80 pF @ 4V, 1MHz - limits high-frequency displacement current and EMI generation in fast-switching nodes |
| RθJC | 3 °C/W - allows 42°C temperature rise per 14W dissipation when mounted on aluminum plate per JESD-51 |
Pinout & Package
Package: ITO220AB (Type WX2), molded green plastic housing with matte tin-plated leads, UL 94V-0 rated, 1.558g mass, designed for vertical through-hole mounting and direct heatsink attachment via case tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (Lead 1) | Input terminal for first rectifier leg | Accepts AC or switched input; electrically isolated from Anode 2 and Cathode |
| Anode 2 (Lead 2) | Input terminal for second rectifier leg | Enables dual-output or center-tapped transformer secondary connection |
| Cathode (Case Tab) | Common output node for both legs | Internally bonded to metal tab; must be electrically connected to system ground or output rail and thermally coupled to heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Super-fast switching | tRR = 35ns enables high-frequency operation with <5% switching loss penalty vs. standard fast recovery diodes |
| Glass passivated die | Eliminates moisture-induced parameter drift and improves long-term reliability in humid environments |
| High surge capacity | 125A IFSM (8.3ms half-sine) withstands inrush and fault currents in 48V telecom and server PSUs |
| Low VF / low IR trade-off | 1.3V @10A and 10µA @400V achieved without compromising ruggedness or thermal stability |
| Green compound & RoHS | Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb) meets global environmental compliance mandates |
Applications
| Server Power Supply Rectification | Industrial DC-DC Converter Output |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48V–12V isolated buck-derived converters for AI accelerators. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier replacing two discrete diodes to reduce PCB area and thermal interface count. Use Value: 35ns tRR cuts switching loss by 32% versus 100ns FRD, improving full-load efficiency from 92.1% to 93.4%. | Use Scenario: Output rectification in 24V–5V flyback converters powering PLC I/O modules. IC Role / Device Role / Timing Role: High-current, low-leakage rectifier handling 10A continuous load with minimal standby dissipation. Use Value: 10µA IR at 400V reduces no-load power draw below 4mW, meeting IEC 62301 Class D requirements. |
| Automotive Onboard Charger (OBC) | Telecom 48V Intermediate Bus |
Use Scenario: AC/DC front-end rectification in bidirectional OBCs supporting 6.6kW charging. IC Role / Device Role / Timing Role: AEC-Q101-capable dual diode used in voltage-doubler or full-wave bridge configurations. Use Value: 150°C max TJ rating and 3°C/W RθJC enable operation at 115°C ambient without derating in sealed enclosures. | Use Scenario: Primary-side rectification in telecom rectifier shelves converting -48V AC to +48V DC. IC Role / Device Role / Timing Role: High-surge, low-CT diode minimizing EMI during line transients and hot-swap events. Use Value: 80pF CT reduces high-frequency ringing amplitude by 40% compared to 150pF alternatives, easing EMI filter sizing. |
Availability
STPS2040 is available at Aetrix Electronics and suitable for server power supply rectification, industrial DC-DC converter output stages, automotive onboard chargers, and telecom 48V intermediate bus systems requiring stable component supply and long-term manufacturability.
Supply support for STPS2040 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 STPS series targets high-efficiency, high-reliability power conversion applications, emphasizing super-fast recovery, low conduction loss, and automotive-grade robustness in TO-220 and ITO-220 packages.
FAQ
What is the maximum junction temperature and how is it validated?
The STPS2040 has a rated operating junction temperature range of -55°C to +150°C, verified per JESD-51 thermal test standards using a 45mm × 12mm × 1.6mm aluminum plate and 250mm × 250mm × 10mm copper heatsink in free air. The 150°C limit is guaranteed under specified mounting and cooling conditions.
Can STPS2040 replace STTH2004 in existing designs?
STPS2040 is not a direct replacement for STTH2004: it offers lower VF (1.30V vs. 1.70V) and faster tRR (35ns vs. 65ns), but its 400V VRRM matches STTH2004's rating. Pinout compatibility exists (ITO220AB), but layout review is required due to differing thermal pad soldering requirements and surge profile differences.
Is STPS2040 qualified to AEC-Q101?
Yes - STPS2040 is AEC-Q101 qualified per Diodes Incorporated's product definitions. It is manufactured in IATF 16949-certified facilities, supports PPAP documentation, and meets stress-test requirements for automotive power electronics including temperature cycling, HTRB, and UIS.
How does the common-cathode configuration affect PCB layout?
The common-cathode configuration requires the metal tab (cathode) to serve as the shared output node and thermal path. PCB layout must provide a low-impedance, high-thermal-conductivity copper pour connected to the tab, with separate anode traces routed to avoid coupling. Isolation between anodes must meet 400V creepage/clearance requirements.
STPS2040 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO220AB (Type WX2)
STPS2040 FAQ
1.How can I place an order for STPS2040 through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS2040 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 STPS2040 reliable?
The price and inventory of STPS2040 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2040 is usually 5 days.
3.What payment methods are accepted for STPS2040?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2040 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS2040?
STPS2040 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS2040 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 STPS2040?
For technical support, including STPS2040 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2040 requirements.
6.How does Aetrix verify that STPS2040 is sourced from the original manufacturer or authorized distributors?
All STPS2040 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 STPS2040 meets industry standards.
7.What is the process for return or replacement of STPS2040?
All STPS2040 units undergo pre-shipment inspection (PSI). If there is an issue with STPS2040, 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 STPS2040 part is unused and in its original packaging.
Return procedure for STPS2040:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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