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STMicroelectronics STPS40SM100CG-TR
- Part No.:
- STPS40SM100CG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STPS40SM100CG-TR.pdf
- Description:
- DIODE ARRAY SCHOT 100V 20A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:32
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Product details
Overview
STPS40SM100CG-TR from STMicroelectronics is a dual 20 A, 100 V common-cathode Schottky rectifier in TO-220AB package, optimized for high-frequency SMPS output stages in notebook and game station adapters. It delivers typ. 0.605 V forward voltage at 40 A (per device), 150 °C max junction temperature, and specified avalanche capability for robust transient handling.
For engineers reviewing the STPS40SM100CG-TR datasheet, STPS40SM100CG-TR pinout, STPS40SM100CG-TR application, or STPS40SM100CG-TR equivalent, key selection criteria include low conduction loss (VF ≤ 0.665 V @ 20 A, 125 °C), thermal resistance (Rth(j-c) = 0.7 °C/W total), and dual-diode configuration enabling interleaved or parallel output rectification in compact AC/DC adapters.
Technical Context
This dual common-cathode Schottky rectifier integrates two independent 20 A diodes sharing one cathode terminal, enabling synchronous or split-output topologies without external interconnection. Its low VF–IR trade-off (7 µA IR @ 70 V, 25 °C; 13 mA @ 100 V, 125 °C) supports efficiency across light-to-full load in 100 kHz–500 kHz switch-mode supplies.
The device features avalanche-rated capability (1295 W peak, 10 µs pulse), defined thermal coupling between diodes (Rth(c) = 0.1 °C/W), and junction-to-case thermal resistance of 1.3 °C/W per diode - critical for accurate thermal modeling when both diodes operate simultaneously under asymmetric current sharing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 40 A total (2 × 20 A per diode); enables high-current DC/DC output stage with shared heatsink mounting |
| VRRM | 100 V repetitive reverse voltage; suitable for 48 V–60 V nominal input systems with margin for line transients |
| VF (typ.) | 0.605 V @ 40 A, 25 °C; reduces conduction loss to ~24.2 W at full load, improving adapter efficiency |
| Tj (max.) | 150 °C; allows operation in thermally constrained enclosures without derating below 125 °C ambient |
| Rth(j-c) | 0.7 °C/W total (junction-to-case); enables direct thermal interface to heatsink with predictable ΔT under 40 A load |
| IFSM | 350 A non-repetitive surge (10 ms sine); withstands inrush and short-circuit events in adapter primary-side protection schemes |
Pinout & Package
TO-220AB package: 3-terminal, insulated tab, vertical mounting, epoxy body compliant with UL 94 V0. Mounting torque: 0.55 N·m (recommended), 0.70 N·m (max). Tab is electrically connected to cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of Diode 1 | Connects to transformer secondary winding or switching node for first output path |
| Pin 2 (Cathode) | Common cathode | Shared output node; connects directly to output capacitor and PCB ground plane |
| Pin 3 (Anode 2) | Anode of Diode 2 | Connects to second transformer winding or phase in interleaved dual-output designs |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | VF ≤ 0.665 V @ 20 A, 125 °C - reduces power loss by ≥15% vs. standard Schottkys in 65 W adapter designs |
| Avalanche capability | 1295 W peak (10 µs, Tj = 125 °C) - provides intrinsic overvoltage clamping during MOSFET turn-off spikes without external TVS |
| Thermal coupling control | Rth(c) = 0.1 °C/W between diodes - enables accurate junction temperature prediction when both diodes conduct simultaneously |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant packaging - meets EU environmental requirements for consumer electronics shipments |
Applications
| Adapter for Notebook | DC/DC Converter |
|---|---|
Use Scenario: 65 W universal-input AC/DC adapter powering 19.5 V laptop systems with tight thermal envelope. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFETs in secondary-side regulation, operating at 200–300 kHz. Use Value: Achieves >92% efficiency at 20% load due to low VF and minimal reverse recovery loss. | Use Scenario: Isolated 12 V → 5 V/3.3 V buck-derived converter in industrial PLC I/O module. IC Role / Device Role / Timing Role: Dual-path output rectifier supporting redundant 5 V rails with shared filtering and thermal management. Use Value: Eliminates need for two discrete TO-220 devices, reducing PCB area by 35% and thermal interface complexity. |
| LED Lighting Driver | Game Station Power Supply |
Use Scenario: Constant-current LED driver for 48 V string lighting with PWM dimming up to 5 kHz. IC Role / Device Role / Timing Role: High-frequency freewheeling diode in boost converter topology, handling 10 A peak inductor current. Use Value: Low IR ensures <100 µA leakage at 48 V, preventing unintended LED bias during off-state dimming. | Use Scenario: 120 W multi-rail power supply for gaming console with +12 V, +5 V, and +3.3 V outputs. IC Role / Device Role / Timing Role: Primary output rectifier for +12 V rail, paralleled with second unit for redundancy and thermal spreading. Use Value: Avalanche rating absorbs 12 V rail overshoot during sudden load removal, avoiding secondary-side overvoltage shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual common-cathode Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-40CPH01-M3 | Same 100 V VRRM, but single-diode TO-247; VF = 0.72 V @ 40 A, 25 °C; no avalanche rating | Requires two devices for dual-path operation; higher conduction loss increases thermal stress in compact adapters | Preferable only when board layout permits larger footprint and avalanche immunity is not required |
| ON Semiconductor MBR40100CT | 100 V, 40 A dual common-cathode; VF = 0.75 V @ 40 A, 25 °C; Rth(j-c) = 1.0 °C/W (higher thermal resistance) | Larger thermal footprint needed to achieve same junction temperature; less suitable for ultra-thin notebook adapters | Acceptable where cost sensitivity outweighs thermal performance and space constraints |
Compared with VS-40CPH01-M3 and MBR40100CT, STPS40SM100CG-TR offers lower VF, integrated dual-diode topology, and certified avalanche capability - delivering measurable efficiency gain and reliability advantage in thermally dense, high-reliability AC/DC adapters.
Availability
STPS40SM100CG-TR is available at Aetrix Electronics and suitable for notebook adapters, game station power supplies, and industrial DC/DC converters requiring stable component supply and long-term lifecycle support.
Supply support for STPS40SM100CG-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, designing and manufacturing analog, power, microcontroller, and sensor solutions for automotive, industrial, and consumer markets.
The STPS40SM100CG-TR belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for high-frequency, high-density AC/DC and DC/DC power conversion in portable and entertainment electronics.
FAQ
What is the maximum continuous forward current per diode at 125 °C case temperature?
The STPS40SM100CG-TR supports 20 A average forward current per diode at TC = 125 °C, as specified in Table 1 of DS6173 Rev 4. This rating assumes δ = 0.5 square-wave duty cycle and proper heatsinking to maintain case temperature at or below 125 °C.
Is the TO-220AB package electrically insulated?
Yes - the TO-220AB package used for STPS40SM100CG-TR features an electrically insulated tab (epoxy meets UL 94 V0), allowing direct mounting to a grounded heatsink without isolation hardware. The tab is internally connected to the cathode terminal (Pin 2).
How does the thermal coupling parameter Rth(c) affect simultaneous conduction of both diodes?
Rth(c) = 0.1 °C/W quantifies thermal crosstalk between diodes. When both diodes conduct, junction temperature rise of Diode 1 equals P₁ × 1.3 + P₂ × 0.1, enabling precise thermal simulation in dual-load scenarios such as interleaved outputs or redundancy schemes.
Does STPS40SM100CG-TR require external snubbers in typical 200 kHz SMPS designs?
No - its specified avalanche capability (1295 W, 10 µs) and low junction capacitance (<1000 pF @ 0 V) suppress voltage ringing and eliminate need for RC snubbers in properly laid-out 200 kHz flyback or LLC secondary-side rectification circuits.
STPS40SM100CG-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
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 810 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 45 µA @ 100 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
STPS40SM100CG-TR FAQ
1.How can I place an order for STPS40SM100CG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS40SM100CG-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 STPS40SM100CG-TR reliable?
The price and inventory of STPS40SM100CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS40SM100CG-TR is usually 5 days.
3.What payment methods are accepted for STPS40SM100CG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS40SM100CG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS40SM100CG-TR?
STPS40SM100CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS40SM100CG-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 STPS40SM100CG-TR?
For technical support, including STPS40SM100CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS40SM100CG-TR requirements.
6.How does Aetrix verify that STPS40SM100CG-TR is sourced from the original manufacturer or authorized distributors?
All STPS40SM100CG-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 STPS40SM100CG-TR meets industry standards.
7.What is the process for return or replacement of STPS40SM100CG-TR?
All STPS40SM100CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS40SM100CG-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 STPS40SM100CG-TR part is unused and in its original packaging.
Return procedure for STPS40SM100CG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS40SM100CG-TR Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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