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STMicroelectronics STPS20M100SG-TR
- Part No.:
- STPS20M100SG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STPS20M100SG-TR.pdf
- Description:
- DIODE SCHOTTKY 100V 20A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:5,418
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Product details
Overview
STPS20M100SG-TR from STMicroelectronics is a 100 V, 20 A single Schottky rectifier in D²PAK (TO-263) package, optimized for high-frequency switch-mode power supplies with low forward voltage (0.61 V typ. at 5 A, 25 °C), avalanche-rated operation, and 150 °C max junction temperature. It serves as a primary output rectifier in notebook and game station AC/DC adapters.
For engineers reviewing the STPS20M100SG-TR datasheet, STPS20M100SG-TR pinout, STPS20M100SG-TR application, or STPS20M100SG-TR equivalent, key selection criteria include conduction loss modeling (P = 0.425×IF(AV) + 0.0088×IF²(RMS)), thermal resistance (Rth(j-c) = 1.2 °C/W), insulation requirements, and ECOPACK®2 compliance for surface-mount power conversion designs.
Technical Context
This Schottky rectifier uses a planar silicon structure with metal–semiconductor junction to achieve fast recovery (no minority-carrier storage), enabling efficient operation in DC/DC converters and SMPS topologies up to several hundred kHz. Its low VF minimizes I²R losses while maintaining stable reverse leakage (<40 µA at 100 V, 25 °C).
The device is avalanche-rated (1150 W peak at 10 µs, Tj = 125 °C) and qualified for continuous operation at TC = 130 °C in TO-220AB/D²PAK/I²PAK packages. The D²PAK variant features an isolated mounting tab (2000 VRMS insulation not applicable - only TO-220FPAB has that rating), optimized for PCB thermal management via copper pour under the tab.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 12–48 V output DC/DC stages. |
| IF(AV) | 20 A - Average forward current at TC = 130 °C; supports sustained 20 A load in well-heatsinked D²PAK layouts. |
| VF (typ.) | 0.61 V at IF = 5 A, Tj = 25 °C - Enables <1.2 W conduction loss at 20 A (using curve-fit model), critical for >90% efficiency targets. |
| Rth(j-c) | 1.2 °C/W - Junction-to-case thermal resistance; allows direct thermal interface to heatsink or copper plane for thermal design. |
| Tj (max) | +150 °C - Maximum junction temperature; enables operation in compact, sealed adapter enclosures with limited airflow. |
| IR (max) | 40 µA at VR = 100 V, Tj = 25 °C - Low leakage preserves standby efficiency and prevents thermal runaway in parallel configurations. |
| IFSM | 350 A (10 ms sine) - Surge capability handles inrush currents during cold-start of AC/DC adapters without failure. |
Pinout & Package
STPS20M100SG-TR is housed in a surface-mount D²PAK (TO-263) package with three terminals: Anode (pin 1), Cathode (pin 2), and electrically isolated metal tab (pin 3, connected internally to cathode). The tab provides mechanical anchoring and primary thermal path to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input terminal for forward conduction | Connected to switching node (e.g., secondary winding center-tap or synchronous FET drain); must withstand full reverse voltage when off. |
| Cathode (Pin 2) | Output terminal for forward conduction | Connected to output capacitor and load; carries full average output current; low-inductance routing required for EMI control. |
| Tab (Cathode-connected) | Thermal and electrical return path | Internally tied to cathode; requires solder mask-defined thermal pad (12.2 × 9.75 mm min) and ≥35 µm Cu for Rth(j-a) ≤ 15 °C/W per Figure 9. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF (0.61 V typ.) | Reduces conduction loss by ~30% vs. comparable 100 V Si diodes, directly improving light-load efficiency in USB-C PD adapters. |
| Avalanche-rated (1150 W) | Withstands transient overvoltage events (e.g., transformer leakage spikes) without degradation, eliminating need for external clamping in cost-sensitive designs. |
| D²PAK surface-mount package | Enables automated assembly and superior thermal coupling to PCB versus through-hole TO-220AB; footprint matches JEDEC TO-263AB standard. |
| ECOPACK®2 compliance | Meets RoHS, halogen-free, and lead-free reflow requirements (JEDEC J-STD-020D), supporting global environmental certifications for end equipment. |
Applications
| Notebook AC/DC Adapter | Game Station Power Supply |
|---|---|
Use Scenario: Secondary-side rectification in 19–20 V, 3–6 A flyback or LLC resonant converter powering laptop mainboard. IC Role / Device Role / Timing Role: Unidirectional current steering element converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 0.61 V VF reduces output rectifier loss by ≥1.5 W vs. legacy Si diodes, enabling smaller heatsinks and higher power density in slim-profile adapters. | Use Scenario: Output rectification in 12 V, 8–10 A quasi-resonant converter for gaming console internal PSU. IC Role / Device Role / Timing Role: High-current freewheeling path during MOSFET off-time; operates continuously at 20 A peak in burst-mode light-load conditions. Use Value: 150 °C Tj rating and 350 A IFSM ensure reliability during thermal cycling and cold-start surges typical in consumer entertainment systems. |
| LED Driver Secondary Rectifier | Industrial DC/DC Converter |
Use Scenario: Constant-current output stage in 48 V input, 36 V/1.5 A isolated buck-boost LED driver for commercial lighting. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in secondary-side synchronous topology; conducts during transformer demagnetization phase. Use Value: Low IR (<40 µA) prevents standby current drift and maintains Class VI efficiency compliance across ambient temperatures from –25 °C to +70 °C. | Use Scenario: Output rectification in 24 V input, 5 V/10 A industrial DC/DC module for PLC I/O power rails. IC Role / Device Role / Timing Role: Primary power conversion element handling continuous 20 A load with minimal derating up to 70 °C ambient. Use Value: Rth(j-c) = 1.2 °C/W enables direct thermal interface to metal-core PCB, achieving <85 °C case temperature without forced air-critical for fanless enclosures. |
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-20CPH05-M3 | Same 100 V VRRM, 20 A IF(AV), but VF = 0.72 V (typ. @ 10 A); Rth(j-c) = 1.5 °C/W; TO-220AC package. | Through-hole mounting only; higher conduction loss increases thermal stress in space-constrained SMT designs. | Select when legacy through-hole assembly is mandated and thermal margin >3 °C/W is available. |
| ON Semiconductor MBR20100CT | 100 V, dual 10 A common-cathode Schottky; VF = 0.75 V (typ. @ 10 A); TO-220AB package; no avalanche rating. | Requires dual-diode layout; lacks single-device surge robustness; unsuitable for high-reliability adapter applications. | Select only for cost-driven, non-avalanche-critical 12 V output rails where dual-channel symmetry is needed. |
Compared with VS-20CPH05-M3 and MBR20100CT, STPS20M100SG-TR delivers lower conduction loss, surface-mount compatibility, and guaranteed avalanche ruggedness-making it optimal for next-generation compact, high-efficiency AC/DC adapters requiring long-term reliability without derating.
Availability
STPS20M100SG-TR is available at Aetrix Electronics and suitable for notebook AC/DC adapters, game station power supplies, and industrial DC/DC converters requiring stable component supply, RoHS-compliant packaging, and proven thermal performance in surface-mount high-power rectification.
Supply support for STPS20M100SG-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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
STPS20M100SG-TR belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact AC/DC and isolated DC/DC power supplies.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STPS20M100SG-TR supports continuous operation at TC = 130 °C when mounted on a properly designed D²PAK footprint with ≥35 µm copper and ≥12.2 mm × 9.75 mm thermal pad. Derating is required above this temperature per Figure 2, where IF(AV) drops to 12 A at TC = 150 °C.
Does the D²PAK tab require electrical isolation from the PCB ground plane?
No-the D²PAK tab is internally connected to the cathode and must be soldered directly to a cathode-referenced copper pour. Electrical isolation is neither required nor recommended; doing so would severely degrade thermal performance and violate the Rth(j-c) = 1.2 °C/W specification.
Can STPS20M100SG-TR replace TO-220AB variants like STPS20M100ST in existing designs?
Yes, but only with PCB layout revision: D²PAK requires a surface-mount footprint (16.9 mm × 12.2 mm per Figure 14) and different thermal pad design. Electrical characteristics are identical; mechanical and thermal interfaces differ significantly-no drop-in replacement without board redesign.
Is this device suitable for synchronous rectification in LLC resonant converters?
No-STPS20M100SG-TR is a passive Schottky rectifier, not a synchronous MOSFET controller or integrated driver. It functions as a self-commutated diode; for synchronous rectification, discrete MOSFETs with gate drive timing control are required instead.
STPS20M100SG-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:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 40 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
- Operating Temperature - Junction:
- 150°C (Max)
STPS20M100SG-TR FAQ
1.How can I place an order for STPS20M100SG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20M100SG-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 STPS20M100SG-TR reliable?
The price and inventory of STPS20M100SG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20M100SG-TR is usually 5 days.
3.What payment methods are accepted for STPS20M100SG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20M100SG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20M100SG-TR?
STPS20M100SG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20M100SG-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 STPS20M100SG-TR?
For technical support, including STPS20M100SG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20M100SG-TR requirements.
6.How does Aetrix verify that STPS20M100SG-TR is sourced from the original manufacturer or authorized distributors?
All STPS20M100SG-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 STPS20M100SG-TR meets industry standards.
7.What is the process for return or replacement of STPS20M100SG-TR?
All STPS20M100SG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS20M100SG-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 STPS20M100SG-TR part is unused and in its original packaging.
Return procedure for STPS20M100SG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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