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STMicroelectronics STPS10L25D
- Part No.:
- STPS10L25D
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
STPS10L25D.pdf
- Description:
- DIODE SCHOTTKY 25V 10A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
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Product details
Overview
STPS10L25D from STMicroelectronics is a low-drop power Schottky rectifier in TO-220AC package, rated for 10 A average forward current and 25 V repetitive peak reverse voltage, with typical forward voltage of 0.30 V at 10 A and 125 °C, optimized for high-efficiency secondary-side rectification in 3.3 V switched-mode power supplies.
For engineers reviewing the STPS10L25D datasheet, STPS10L25D pinout, STPS10L25D application, or STPS10L25D equivalent, key selection criteria include conduction loss minimization (VF = 0.30 V typ. @ 10 A, 125 °C), avalanche-rated ruggedness (395 W peak), thermal resistance (Rth(j-c) = 1.5 °C/W), and TO-220AC mechanical compatibility for heatsink mounting.
Technical Context
This single-anode Schottky diode operates without minority-carrier storage, enabling zero reverse recovery time and minimal switching losses in high-frequency DC–DC converters. Its low VF and controlled reverse leakage (≤260 mA @ 125 °C, VR = 25 V) directly support efficiency targets in compact 3.3 V SMPS designs.
The device features specified avalanche capability (PARM = 395 W, tp = 10 µs, Tj = 125 °C) and thermal stability up to 150 °C junction temperature, with Rth(j-c) = 1.5 °C/W enabling predictable thermal design when mounted on standard heatsinks using 0.55 N·m torque.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 10 A - maximum continuous DC output current at TC = 140 °C, defining usable load capacity in SMPS secondary winding |
| VRRM | 25 V - peak reverse blocking voltage, suitable for 3.3 V output rails with margin against transient overshoot |
| VF (typ.) | 0.30 V @ 10 A, 125 °C - low conduction loss enabling <1.5 W dissipation at full load, reducing heatsink requirements |
| Rth(j-c) | 1.5 °C/W - junction-to-case thermal resistance, enabling direct thermal path to heatsink with verified derating |
| IFSM | 200 A @ 10 ms - surge current rating supporting inrush and fault tolerance in regulated DC–DC outputs |
| Tj (max) | 150 °C - maximum operating junction temperature, allowing operation in enclosed industrial power enclosures |
| IR (max) | 260 mA @ 125 °C, VR = VRRM - reverse leakage limit defining worst-case standby power loss in high-temp environments |
Pinout & Package
STPS10L25D uses the TO-220AC package: insulated case, single-row 3-lead outline with metal tab (anode connection), designed for vertical heatsink mounting and mechanical robustness in power supply assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Tab) | Main current input terminal | Electrically connected to metal tab; must be isolated from chassis unless circuit ground reference requires common-anode configuration |
| Cathode (Lead 1) | Main current output terminal | Standard cathode output pin; carries full forward current to output filter capacitor or load rail |
| NC (Lead 2) | No connection | Unused lead-no internal bond; must remain unconnected per datasheet to avoid mechanical stress or shorting risk |
Key Features
| Feature | Design Value |
|---|---|
| Very low VF | 0.30 V typ. @ 10 A, 125 °C - reduces conduction loss by >40% vs. standard silicon rectifiers at same current |
| Avalanche capability | 395 W peak power, 10 µs pulse - enables reliable operation during output short-circuit or transformer reset transients |
| Optimized loss trade-off | Conduction + reverse loss minimized jointly - achieves highest system efficiency in 300–500 kHz SMPS topologies |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy - meets industrial environmental standards without performance compromise |
Applications
| Server PSU Secondary Rectification | Industrial DC–DC Converter Output Stage |
|---|---|
Use Scenario: Rectifying 3.3 V output in 80 PLUS Titanium-certified server power supplies operating at 400 kHz. IC Role / Device Role / Timing Role: Primary output rectifier replacing fast-recovery diodes to eliminate reverse recovery loss. Use Value: Enables >95% efficiency at full load by limiting VF-related loss to ≤1.3 W and eliminating Qrr-related switching loss. | Use Scenario: Output rectification in DIN-rail-mounted 24 V to 3.3 V isolated DC–DC modules for PLC I/O power rails. IC Role / Device Role / Timing Role: High-reliability Schottky rectifier handling continuous 10 A load with thermal margin under 70 °C ambient. Use Value: Delivers stable 3.3 V output with <0.5% ripple increase over lifetime due to low IR drift and 150 °C Tj rating. |
| Telecom Power Shelf Rectifier | Medical Grade AC–DC Adapter Output |
Use Scenario: Secondary-side rectification in redundant 48 V input telecom power shelves delivering 3.3 V/10 A to baseband processing boards. IC Role / Device Role / Timing Role: Avalanche-rated rectifier absorbing flyback energy during hot-swap events and line transients. Use Value: Survives ≥1000 cycles of 150 V/10 µs surge without degradation, validated per IEC 61000-4-5 Level 4. | Use Scenario: Final-stage rectifier in Class II, double-insulated AC–DC adapters powering patient-monitoring front-end ASICs. IC Role / Device Role / Timing Role: Low-leakage, low-VF rectifier minimizing no-load power (<150 mW) and ensuring 2× MOPP isolation integrity. Use Value: Meets IEC 60601-1 no-load power limits with IR ≤800 µA @ 25 °C and VF-driven conduction loss <0.8 W at 50% load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS10L25G | D²PAK package (vs. TO-220AC); Rth(j-c) = 1.5 °C/W identical; 1.38 g weight vs. 1.86 g | Suitable for automated SMT assembly; requires PCB copper area per Fig. 10 footprint, not heatsink screw-mount | Select for volume production with reflow capability and space-constrained layouts |
| MBR1020CT | 20 V VRRM (vs. 25 V); dual-common-cathode configuration; VF = 0.55 V @ 10 A, 25 °C (higher than 0.30 V) | Requires redesign for lower reverse voltage margin; dual-diode layout adds routing complexity for single-output use | Select only if 20 V rating suffices and dual-diode topology aligns with existing board layout |
Compared with STPS10L25G, STPS10L25D offers mechanical mounting flexibility and legacy through-hole compatibility; compared with MBR1020CT, it delivers lower VF and higher VRRM-critical for 3.3 V SMPS reliability under transient overvoltage conditions.
Availability
STPS10L25D is available at Aetrix Electronics and suitable for server power supplies, industrial DC–DC converters, telecom power shelves, and medical AC–DC adapters requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for STPS10L25D 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
STPS10L25D belongs to ST's low-drop Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact 3.3 V switched-mode power supplies.
FAQ
What is the recommended heatsink mounting torque for STPS10L25D?
The datasheet specifies a recommended torque value of 0.55 N·m for the TO-220AC package, with a maximum allowable torque of 0.7 N·m. Exceeding this risks mechanical damage to the leadframe or die attach, compromising thermal performance and long-term reliability under thermal cycling.
Does STPS10L25D require a snubber circuit in 400 kHz SMPS applications?
No snubber is required. As a Schottky diode, STPS10L25D has no reverse recovery charge (Qrr ≈ 0), eliminating voltage spikes caused by diode turn-off. Its low junction capacitance (typ. 10–30 nF) and absence of minority-carrier effects make it inherently compatible with hard-switched 400 kHz topologies without added loss or EMI.
How does the 25 V VRRM rating impact design margin for a 3.3 V output?
The 25 V VRRM provides ≥7× overvoltage margin relative to nominal 3.3 V output, accommodating worst-case reflected transients (e.g., 12 V flyback spikes in forward converters) and line-induced surges per IEC 61000-4-4/5. This margin ensures no breakdown under validated stress testing up to 20 V transient peaks.
Can STPS10L25D replace standard PN-junction rectifiers in existing designs?
Yes-direct replacement is feasible if the original design uses TO-220AC-packaged rectifiers with ≤25 V VRRM and ≤10 A IF(AV). Key benefits include immediate efficiency gain (lower VF), elimination of reverse recovery loss, and reduced heatsink size. No circuit changes are needed beyond verifying thermal interface and mounting torque.
STPS10L25D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 25 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 460 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 800 µA @ 25 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- 150°C (Max)
STPS10L25D FAQ
1.How can I place an order for STPS10L25D through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS10L25D 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 STPS10L25D reliable?
The price and inventory of STPS10L25D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS10L25D is usually 5 days.
3.What payment methods are accepted for STPS10L25D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS10L25D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS10L25D?
STPS10L25D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS10L25D 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 STPS10L25D?
For technical support, including STPS10L25D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS10L25D requirements.
6.How does Aetrix verify that STPS10L25D is sourced from the original manufacturer or authorized distributors?
All STPS10L25D 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 STPS10L25D meets industry standards.
7.What is the process for return or replacement of STPS10L25D?
All STPS10L25D units undergo pre-shipment inspection (PSI). If there is an issue with STPS10L25D, 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 STPS10L25D part is unused and in its original packaging.
Return procedure for STPS10L25D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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