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STMicroelectronics STPS3045CG
- Part No.:
- STPS3045CG
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STPS3045CG.pdf
- Description:
- DIODE ARRAY SCHOTT 45V 15A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,946
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Product details
Overview
STPS3045CG from STMicroelectronics is a dual center-tap Schottky rectifier in D²PAK package, rated for 45 V repetitive peak reverse voltage and 2 × 15 A average forward current per diode, with typical forward voltage of 0.5 V at 125 °C and 15 A - optimized for low-voltage, high-frequency DC-DC converters and synchronous rectification in SMPS.
For engineers reviewing the STPS3045CG datasheet, STPS3045CG pinout, STPS3045CG application, or STPS3045CG equivalent, key selection criteria include avalanche rating (430 W peak), junction-to-case thermal resistance (0.95 °C/W total), 175 °C max operating junction temperature (200 °C in DC forward mode), and ECOPACK®2 compliance for industrial power conversion designs.
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-channel freewheeling in half-bridge and full-wave topologies. Its negligible switching losses and extremely fast recovery eliminate reverse recovery charge concerns typical of PN junction diodes.
Designed for thermally demanding environments, it supports continuous operation up to 175 °C junction temperature (200 °C under DC forward bias for D²PAK), with avalanche energy validation per AN1768 and AN2025, and thermal coupling between diodes modeled via Rth(c) = 0.3 °C/W to predict cross-heating effects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - maximum reverse blocking capability without breakdown in SMPS output stages |
| IF(AV) per diode | 15 A - sustained DC current handling per diode at TC = 155 °C, defining heatsink sizing |
| VF (typ.) | 0.5 V @ 125 °C / 15 A - directly determines conduction loss: Pcond ≈ 0.42×IF(AV) + 0.01×IF(RMS)² |
| Tj(max) | 175 °C (200 °C in DC forward mode) - enables higher ambient operation vs. standard Schottkys |
| Rth(j-c) total | 0.95 °C/W - thermal path from both junctions to case, critical for D²PAK mounting on copper pads |
| PARM(peak) | 430 W @ tp = 10 µs - validated avalanche robustness for transient overvoltage clamping |
| IR @ 125 °C | 11–40 mA - leakage current limiting efficiency in high-temp DC-DC outputs |
Pinout & Package
D²PAK (TO-263) surface-mount package with three terminals: two anodes (A1, A2) and one shared cathode (K). Mounting tab is electrically connected to cathode and serves as primary thermal interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first Schottky diode path; connects to high-side switch node in half-bridge |
| A2 | Anode 2 | Input terminal for second Schottky diode path; connects to low-side switch node or secondary winding |
| K | Common Cathode | Output/return node shared by both diodes; electrically and thermally tied to exposed metal tab |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche-rated operation | Validated 430 W peak avalanche power at 10 µs pulse, enabling reliable overvoltage tolerance without external clamps |
| Dual-center-tap topology | Two independent anodes sharing one cathode simplifies PCB layout in synchronous rectifiers and reduces component count vs. discrete pairs |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy meets UL 94 V0, supporting environmental requirements for industrial and telecom power supplies |
| High-temperature capability | Rated for 200 °C junction temperature under DC forward bias, extending lifetime in compact, unventilated enclosures |
Applications
| Server VRM | Industrial DC-DC Converter |
|---|---|
|
Use Scenario: Point-of-load regulation in 48 V to 12 V/5 V server VRMs with multiphase buck topology. IC Role / Device Role / Timing Role: Synchronous rectifier replacing MOSFETs in low-side position to reduce gate drive complexity and conduction loss. Use Value: 0.5 V VF at 15 A cuts conduction loss by ~40% vs. comparable MOSFETs at light loads, improving efficiency at 10–30% load range. |
Use Scenario: Isolated 24 V input to 5 V/3.3 V output in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Secondary-side rectifier in forward or flyback converter with center-tapped transformer winding. Use Value: Dual-anode configuration matches transformer center tap, eliminating need for two separate diodes and reducing layout area by 35%. |
| Solar Microinverter | Automotive DC-DC Module |
|
Use Scenario: High-frequency DC-DC stage in string-level solar microinverters converting 30–60 V PV input to 400 V bus. IC Role / Device Role / Timing Role: Freewheeling diode in interleaved boost stage operating at 100–300 kHz. Use Value: Negligible switching losses and <10 ns reverse recovery enable >98% efficiency at 200 kHz, reducing heatsink mass by 60%. |
Use Scenario: 12 V to 5 V/3.3 V conversion in automotive body control module (BCM) with strict thermal constraints. IC Role / Device Role / Timing Role: Polarity protection and reverse-current blocking diode in always-on power rail. Use Value: 175 °C Tj(max) and 220 A IFSM withstand load-dump transients and extended engine-off battery drain without derating. |
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-30CPH045 | Same 45 V VRRM, 30 A total IF(AV), but TO-247 package; Rth(j-c) = 0.9 °C/W (per device), no avalanche rating specified | Requires through-hole assembly and larger heatsink footprint; lacks documented avalanche validation for transient clamping | Select when TO-247 mechanical fit is mandatory and transient robustness is managed externally |
| ON Semiconductor MBR3045CT | 45 V VRRM, 30 A total IF(AV), TO-220AB package; VF = 0.72 V (max) @ 15 A / 125 °C - 44% higher than STPS3045CG typical | Higher conduction loss increases thermal stress in high-density layouts; not rated for 200 °C DC forward operation | Select only for cost-sensitive, lower-efficiency designs where D²PAK footprint is unavailable |
Compared with VS-30CPH045 and MBR3045CT, STPS3045CG delivers superior thermal performance in surface-mount form factor, verified avalanche capability for system-level reliability, and lowest VF among 45 V dual Schottkys - making it optimal for space-constrained, high-efficiency industrial and computing power supplies.
Availability
STPS3045CG is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and solar microinverters requiring stable component supply, high-temperature operation, and surface-mount manufacturability.
Supply support for STPS3045CG 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, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The STPS series targets high-efficiency power conversion, with STPS3045CG specifically engineered for low-voltage, high-frequency rectification in compact, thermally constrained SMPS designs.
FAQ
What is the maximum continuous junction temperature for STPS3045CG in forward conduction mode?
The maximum operating junction temperature is 175 °C under standard conditions, but ST specifies an extended limit of 200 °C when operating under DC forward current without reverse bias for durations up to one hour - confirmed in Table 2, Note (2) of DocID3510 Rev 9.
Is STPS3045CG pin-compatible with other dual Schottky rectifiers in D²PAK?
No - STPS3045CG uses a unique dual-anode/single-cathode (A1-A2-K) pinout specific to center-tap rectification. It is not pin-compatible with common cathode (K-K-A) or common anode (A-A-K) dual Schottkys like SB540 or MBR2045CT, which have different terminal assignments and internal configurations.
How is avalanche capability validated for STPS3045CG?
Avalanche robustness is validated per STMicroelectronics Application Notes AN1768 ("Admissible avalanche power of Schottky diodes") and AN2025 ("Converter improvement using Schottky rectifier avalanche specification"), with 430 W peak power at 10 µs pulse duration and Tj = 125 °C - measured and guaranteed per production test flow.
What is the recommended PCB copper area for thermal management of STPS3045CG in D²PAK?
Figure 8 in the datasheet shows Rth(j-a) versus copper surface area: for ≤30 °C/W ambient-to-junction resistance, ≥10 cm² of 35 µm-thick FR4 copper is required. For optimal performance, ST recommends ≥25 cm² with thermal vias to inner ground planes to achieve Rth(j-c)-dominated cooling.
STPS3045CG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 570 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 45 V
- Operating Temperature - Junction:
- 200°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
STPS3045CG FAQ
1.How can I place an order for STPS3045CG through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS3045CG 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 STPS3045CG reliable?
The price and inventory of STPS3045CG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3045CG is usually 5 days.
3.What payment methods are accepted for STPS3045CG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3045CG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS3045CG?
STPS3045CG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS3045CG 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 STPS3045CG?
For technical support, including STPS3045CG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3045CG requirements.
6.How does Aetrix verify that STPS3045CG is sourced from the original manufacturer or authorized distributors?
All STPS3045CG 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 STPS3045CG meets industry standards.
7.What is the process for return or replacement of STPS3045CG?
All STPS3045CG units undergo pre-shipment inspection (PSI). If there is an issue with STPS3045CG, 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 STPS3045CG part is unused and in its original packaging.
Return procedure for STPS3045CG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS3045CG Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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