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STMicroelectronics STPS20SM60SG-TR
- Part No.:
- STPS20SM60SG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STPS20SM60SG-TR.pdf
- Description:
- DIODE SCHOTTKY 60V 20A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,248
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Product details
Overview
STPS20SM60SG-TR from STMicroelectronics is a single silicon Schottky power rectifier in D2PAK surface-mount package, rated for 20 A average forward current and 60 V repetitive peak reverse voltage, with typical forward voltage drop of 0.410 V at 125 °C and 20 A. It is avalanche-rated (80 V max repetitive peak avalanche voltage), thermally optimized for high-efficiency AC/DC adapters in notebooks and desktop PCs.
For engineers reviewing the STPS20SM60SG-TR datasheet, STPS20SM60SG-TR pinout, STPS20SM60SG-TR application, or STPS20SM60SG-TR equivalent, key selection criteria include low conduction loss (P = 0.430 × IF(AV) + 0.0075 × IF²(RMS)), junction-to-case thermal resistance of 1.3 °C/W, avalanche energy capability, and D2PAK footprint compatibility with high-power SMPS layouts.
Technical Context
This Schottky diode operates in unidirectional forward conduction mode with no minority-carrier storage delay, enabling true high-frequency switching (no reverse recovery time). Its low VF and high IF(AV) support continuous conduction mode (CCM) operation in 100–500 kHz SMPS topologies.
The device's avalanche rating (18.4 kW peak repetitive avalanche power at tp = 1 µs) and defined reverse safe operating area (Figure 12) allow robust transient handling during inductive turn-off events without external snubbers in adapter primary-side rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 20 A - maximum continuous DC forward current at Tc = 130 °C, defining steady-state power delivery capacity |
| VRRM | 60 V - maximum repetitive reverse blocking voltage, setting input voltage headroom for 48 V nominal systems |
| VF (typ) | 0.410 V at 20 A, 125 °C - low conduction loss directly reducing I²R heating and improving adapter efficiency above 85% |
| Tj (max) | 150 °C - maximum junction temperature, enabling operation with minimal heatsinking in space-constrained adapters |
| Rth(j-c) | 1.3 °C/W - thermal resistance from junction to case, enabling direct mounting to PCB copper pour for passive cooling |
| VARM | 80 V at tp < 1 µs - defines safe reverse avalanche clamping level during fast transients without device failure |
| IFSM | 400 A surge current (10 ms sine) - supports inrush current tolerance during cold start in AC/DC front-end designs |
Pinout & Package
Package: D2PAK (TO-263), surface-mount, single-diode configuration with isolated tab (pin 3 = cathode, pin 1 = anode, pin 2 = tab/cathode connection per Figure 13 footprint).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Main AC/DC converter output node connection; carries full load current into smoothing capacitor |
| Pin 2 | Tab / Cathode | Exposed metal pad soldered to large copper pour; serves as primary heat path and electrical cathode return |
| Pin 3 | Cathode | Secondary cathode terminal for low-inductance routing; electrically tied to Pin 2 internally |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche-rated operation | Withstands 80 V repetitive avalanche pulses (tp < 1 µs), eliminating need for external clamping in flyback secondary rectification |
| Low forward voltage drop | 0.410 V typ. at 20 A/125 °C reduces conduction losses by >30% vs. standard Si PN rectifiers in same package |
| High thermal efficiency | Junction-to-case Rth = 1.3 °C/W enables ≥15 W dissipation with ≤20 °C rise using 40 cm² 35 µm Cu on FR4 |
| D2PAK surface-mount format | Compatible with automated SMT assembly and high-current PCB layout; eliminates through-hole drilling and improves board-level reliability |
Applications
| Notebook AC Adapter | Desktop PC Power Supply |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 65–90 W flyback converters powering ultrabooks and thin-and-light laptops. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode replacing MOSFET gate drivers in cost-sensitive designs where Schottky VF advantage outweighs active control complexity. Use Value: Enables >90% efficiency at light load and >88% at full load without thermal derating, meeting Energy Star 6.1 standby requirements. | Use Scenario: Output rectification in multi-rail ATX PSUs delivering +12 V, +5 V, and +3.3 V to motherboard and peripherals. IC Role / Device Role / Timing Role: Primary 12 V rail rectifier handling up to 20 A continuous current in compact form factor with minimal heatsink volume. Use Value: Reduces thermal footprint by 40% vs. TO-220AB variant while maintaining identical electrical performance under 130 °C case temperature. |
| Game Console Power Adapter | USB-C PD Portable Charger |
Use Scenario: High-density 45–60 W AC/DC adapter for handheld gaming devices requiring rapid thermal response and compact mechanical envelope. IC Role / Device Role / Timing Role: Low-VF output rectifier operating at 250 kHz switching frequency with zero reverse recovery loss. Use Value: Delivers 15% lower junction temperature rise compared to legacy 60 V Schottkys, extending lifetime beyond 50,000 hours MTBF. | Use Scenario: Dual-output 30 W USB-C PD charger with independent 5 V/3 A and 9 V/3.3 A rails sharing common transformer secondary. IC Role / Device Role / Timing Role: Secondary-side rectifier for 9 V rail, selected for low VF stability across -40 to +125 °C ambient range. Use Value: Maintains <0.55 V VF across full temperature range, ensuring tight output regulation without feedback loop compensation changes. |
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-20CPH06-M3 | Same 60 V VRRM, 20 A IF(AV), but TO-220AC package; Rth(j-c) = 2.0 °C/W; VF = 0.52 V @ 20 A/125 °C | Requires through-hole assembly and larger heatsink; less suitable for ultra-thin adapter PCBs | Select when legacy through-hole manufacturing is mandated and thermal margin exceeds 10 °C |
| ON Semiconductor MBR2060CT | 20 A dual common-cathode die in TO-220AB; VF = 0.65 V @ 20 A/25 °C; no avalanche rating | Offers dual-diode integration but higher VF and no transient ruggedness; unsuitable for unclamped flyback designs | Select only for non-avalanche, dual-output applications where footprint density is secondary to BOM count reduction |
Compared with VS-20CPH06-M3 and MBR2060CT, STPS20SM60SG-TR delivers superior thermal performance (1.3 vs. 2.0 °C/W), lower conduction loss (0.410 vs. 0.52–0.65 V), and verified avalanche ruggedness-making it optimal for high-density, high-reliability SMPS where thermal and transient margins are constrained.
Availability
STPS20SM60SG-TR is available at Aetrix Electronics and suitable for notebook AC adapters, desktop PC power supplies, game console chargers, and USB-C PD portable chargers requiring stable component supply and long-term industrial availability.
Supply support for STPS20SM60SG-TR 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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
This device belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-frequency, high-efficiency AC/DC conversion in space- and thermally-constrained power adapters and computing power supplies.
FAQ
What is the recommended PCB copper area for thermal management of STPS20SM60SG-TR?
Per Figure 11, a minimum 40 cm² of 35 µm thick copper on the component side, connected directly to the D2PAK tab (Pin 2), achieves Rth(j-a) ≈ 25 °C/W. With this layout, the device sustains 20 A at Tc = 130 °C without forced air cooling. Thermal vias under the tab further reduce Rth(j-a) by up to 30%.
Does STPS20SM60SG-TR require a heatsink in typical adapter applications?
No external heatsink is required when mounted on ≥40 cm² of 2 oz (70 µm) copper with ≥8 thermal vias (0.3 mm diameter) under the tab. The D2PAK package's low Rth(j-c) of 1.3 °C/W enables full 20 A operation at Tc = 130 °C using only PCB copper as the thermal interface-reducing bill-of-materials and assembly cost.
How does the avalanche rating impact circuit design?
The 80 V repetitive avalanche rating (VARM) allows the diode to safely clamp inductive spikes during switch turn-off without external TVS or RC snubbers. This simplifies secondary-side layout in flyback converters, reduces component count, and improves reliability-provided pulse duration remains below 1 µs and peak current stays within the reverse SOA curve (Figure 12).
Is STPS20SM60SG-TR RoHS and REACH compliant?
Yes. STPS20SM60SG-TR is manufactured in ST's ECOPACK®-compliant D2PAK package, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation, including substance declarations and test reports, is available via ST's official quality portal using the order code STPS20SM60SG-TR.
STPS20SM60SG-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 630 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 85 µA @ 60 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
- Operating Temperature - Junction:
- 150°C (Max)
STPS20SM60SG-TR FAQ
1.How can I place an order for STPS20SM60SG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20SM60SG-TR 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 STPS20SM60SG-TR reliable?
The price and inventory of STPS20SM60SG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20SM60SG-TR is usually 5 days.
3.What payment methods are accepted for STPS20SM60SG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20SM60SG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20SM60SG-TR?
STPS20SM60SG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20SM60SG-TR 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 STPS20SM60SG-TR?
For technical support, including STPS20SM60SG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20SM60SG-TR requirements.
6.How does Aetrix verify that STPS20SM60SG-TR is sourced from the original manufacturer or authorized distributors?
All STPS20SM60SG-TR 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 STPS20SM60SG-TR meets industry standards.
7.What is the process for return or replacement of STPS20SM60SG-TR?
All STPS20SM60SG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS20SM60SG-TR, 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 STPS20SM60SG-TR part is unused and in its original packaging.
Return procedure for STPS20SM60SG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS20SM60SG-TR Tags
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