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STMicroelectronics STPS2045CG-TR
- Part No.:
- STPS2045CG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STPS2045CG-TR.pdf
- Description:
- DIODE ARRAY SCHOTT 45V 10A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,401
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Product details
Overview
STPS2045CG-TR from STMicroelectronics is a dual center-tap Schottky rectifier in D²PAK package, rated for 45 V repetitive peak reverse voltage, 2 × 10 A average forward current per diode, and 0.5 V typical forward voltage at 125 °C/10 A - optimized for low-voltage, high-frequency DC–DC converters and free-wheeling in SMPS.
For engineers reviewing the STPS2045CG-TR datasheet, STPS2045CG-TR pinout, STPS2045CG-TR application, or STPS2045CG-TR equivalent, key selection criteria include avalanche rating (60 V VARM), thermal resistance (Rth(j-c) = 3.5 °C/W total), insulated package compliance (2000 VRMS), and ECOPACK®2 environmental certification.
Technical Context
This dual-diode Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification or dual-output flyback topologies. Its negligible switching losses and extremely fast recovery eliminate reverse recovery charge concerns in >100 kHz switching applications.
The D²PAK package provides enhanced thermal coupling to PCB copper (Rth(j-a) drops to ~15 °C/W with 50 cm² copper), while its insulated construction supports safe operation in grounded heatsink configurations without isolation hardware. Avalanche capability (280 W peak, 60 V VARM) enables robustness against inductive transients in motor drive and converter freewheeling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - maximum reverse blocking voltage per diode; defines usable input/output voltage range in buck, flyback, and polarity protection circuits. |
| IF(AV) per diode | 10 A - continuous DC current handling per diode at TC = 125 °C; supports 20 A total device output in balanced dual-path designs. |
| VF (typ.) | 0.5 V at 10 A / 125 °C - directly determines conduction loss (P ≈ 0.42×IF(AV) + 0.015×IF²(RMS)) and thermal rise in high-current SMPS rails. |
| Rth(j-c) total | 3.5 °C/W - junction-to-case thermal resistance for both diodes combined; enables precise heatsink sizing when mounted on copper pour. |
| VARM | 60 V - maximum repetitive avalanche voltage (tp < 10 µs); allows safe clamping of inductive kickback without external snubbers. |
| Tj(max) | 175 °C - maximum junction temperature; permits operation in high-ambient industrial environments with derated current. |
Pinout & Package
The STPS2045CG-TR uses a surface-mount D²PAK (TO-263) package with three terminals: two anodes (A1, A2) and one shared cathode (K). The package features an isolated metal tab rated for 2000 VRMS insulation and is optimized for PCB thermal conduction via the exposed cathode pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input path for first Schottky diode; connects to primary-side switch node or positive rail in dual-output converters. |
| A2 | Anode 2 | Input path for second Schottky diode; enables independent control or parallel operation with A1 in center-tap transformer topologies. |
| K | Common Cathode | Shared output terminal; electrically ties both diodes' cathodes; serves as main power return and thermal interface to PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| Dual center-tap topology | Enables single-package implementation of dual-output synchronous rectification or transformer center-tap full-wave rectification without discrete diode pairing. |
| Avalanche-rated (280 W, 60 V) | Withstands repetitive inductive energy spikes up to 280 W (10 µs pulse), eliminating need for external transient suppressors in motor drive freewheeling paths. |
| ECOPACK®2 compliance | Meets RoHS, halogen-free, and lead-free soldering requirements; certified for industrial and automotive-grade supply chains requiring strict environmental traceability. |
| Low VF (0.5 V typ.) at 125 °C | Reduces conduction loss by >30% vs. standard silicon rectifiers at elevated temperatures, improving efficiency in compact, thermally constrained DC–DC modules. |
Applications
| Server VRM Power Stage | Industrial DC–DC Converter |
|---|---|
Use Scenario: High-density 12 V → 1.2 V point-of-load conversion in rack-mounted servers using multiphase buck regulators. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing synchronous rectification for two interleaved phases; A1/A2 driven by complementary gate signals, K tied to output inductor. Use Value: 0.5 V VF minimizes I²R losses at 10 A/phase, enabling >92% efficiency at full load while maintaining Tj ≤ 150 °C on 40 cm² internal copper. | Use Scenario: 48 V to 12 V isolated DC–DC converter in programmable logic controller (PLC) power supplies. IC Role / Device Role / Timing Role: Center-tap secondary-side rectifier in forward or push-pull topology; A1/A2 connected to transformer center-tapped windings, K delivers regulated 12 V output. Use Value: Avalanche rating absorbs leakage inductance spikes during MOSFET turn-off, eliminating need for clamp diodes and reducing BOM count by one component. |
| Automotive Body Control Module | Telecom Rectifier Board |
Use Scenario: Reverse polarity protection and load dump clamping in 24 V BCM power inputs subjected to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Dual-anode configuration used in back-to-back arrangement (A1→K→A2) across input rail; K grounded, A1/A2 serve as protected input/output terminals. Use Value: 2000 VRMS insulation prevents creepage failure under humidity; 175 °C Tj(max) ensures reliability in engine bay ambient up to 105 °C. | Use Scenario: +48 V telecom rectifier board delivering redundant -48 V DC output with hot-swap capability. IC Role / Device Role / Timing Role: Freewheeling diode in active OR-ing circuit; A1/A2 connected to two independent DC feeds, K tied to common output bus. Use Value: Extremely fast switching eliminates reverse recovery noise in high-frequency OR-ing controllers, preventing false fault triggering in PMBus-managed systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2045CT | TO-220AB through-hole package; Rth(j-c) = 1.4 °C/W (total); no insulation rating. | Requires mechanical isolation hardware for grounded heatsinks; better suited for prototyping or low-volume industrial assemblies. | Select when manual assembly, higher thermal performance with bolted heatsink, or legacy footprint compatibility is required. |
| Vishay VS-20CPH04-M3 | Single-diode D²PAK; 40 V VRRM; VF = 0.52 V @ 10 A; not avalanche-rated. | Lacks dual-diode integration and avalanche ruggedness; requires two devices for center-tap function. | Choose only for cost-sensitive, non-avalanche applications where dual-diode integration is unnecessary and layout space permits duplication. |
Compared with STPS2045CT and VS-20CPH04-M3, the STPS2045CG-TR uniquely combines dual-center-tap integration, 2000 VRMS insulation, and 60 V avalanche clamping in a surface-mount D²PAK - making it optimal for high-reliability, space-constrained, and thermally demanding SMPS designs.
Availability
STPS2045CG-TR is available at Aetrix Electronics and suitable for server VRMs, industrial DC–DC converters, automotive body control modules, and telecom rectifier boards requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for STPS2045CG-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 industrial, automotive, and consumer markets.
The STPS2045x series belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for high-frequency switch-mode power supplies where low VF, fast switching, and avalanche ruggedness are critical to system efficiency and reliability.
FAQ
What is the mounting orientation requirement for STPS2045CG-TR on PCB?
The STPS2045CG-TR must be mounted with its exposed cathode pad (K) soldered directly to a minimum 40 cm² copper pour for thermal performance. No specific orientation is mandated, but A1 and A2 should align with respective transformer winding connections to minimize loop inductance. Mechanical stress on leads is not applicable since it is a surface-mount device with no leads.
Does STPS2045CG-TR require external gate driving or control signals?
No - the STPS2045CG-TR is a passive Schottky rectifier with no control inputs or gate terminals. It operates solely based on forward bias conditions across its anode–cathode junctions. Its switching behavior is intrinsic to semiconductor physics and requires no timing or logic interface.
Can STPS2045CG-TR replace a single 20 A Schottky diode in a non-center-tap design?
Yes, but only if both anodes (A1 and A2) are paralleled and the cathode (K) is used as the sole output - effectively configuring it as a single 20 A device. However, this forfeits the center-tap advantage and increases thermal resistance slightly versus dedicated single-diode packages like STPS2045CT.
Is the 2000 VRMS insulation rating verified per UL or IEC standards?
Yes - the TO-220FPAB and D²PAK variants of the STPS2045C family are tested and certified to withstand 2000 VRMS AC for 1 minute per IEC 60747-5-5 and UL 60747-5-5 standards. This rating applies to the isolation between the metal tab (K) and internal die, confirmed in ST's qualification reports AN2025 and AN1768.
STPS2045CG-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
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 570 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
STPS2045CG-TR FAQ
1.How can I place an order for STPS2045CG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS2045CG-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 STPS2045CG-TR reliable?
The price and inventory of STPS2045CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2045CG-TR is usually 5 days.
3.What payment methods are accepted for STPS2045CG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2045CG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS2045CG-TR?
STPS2045CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS2045CG-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 STPS2045CG-TR?
For technical support, including STPS2045CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2045CG-TR requirements.
6.How does Aetrix verify that STPS2045CG-TR is sourced from the original manufacturer or authorized distributors?
All STPS2045CG-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 STPS2045CG-TR meets industry standards.
7.What is the process for return or replacement of STPS2045CG-TR?
All STPS2045CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS2045CG-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 STPS2045CG-TR part is unused and in its original packaging.
Return procedure for STPS2045CG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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