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STMicroelectronics STPS3045DJF-TR
- Part No.:
- STPS3045DJF-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- 8-PowerVDFN
- Datasheet:
-
STPS3045DJF-TR.pdf
- Description:
- DIODE SCHOTTKY 45V 30A POWERFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:14,426
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Product details
Overview
STPS3045DJF-TR from STMicroelectronics is a 45 V, 30 A average forward current Schottky rectifier in PowerFLAT™ 5x6 package, featuring 0.50 V typical forward voltage at 15 A and 2.5 °C/W junction-to-case thermal resistance. It delivers low conduction losses and negligible switching losses for high-frequency DC/DC converters in telecom and desktop power supplies.
For engineers reviewing the STPS3045DJF-TR datasheet, STPS3045DJF-TR pinout, STPS3045DJF-TR application, or STPS3045DJF-TR equivalent, key selection criteria include its 175 °C max junction temperature, 380 A surge current rating, thin 1 mm profile, ECOPACK®2 compliance, and optimized thermal performance on FR4 PCBs with copper area derating.
Technical Context
This Schottky rectifier uses a planar silicon structure with metal–semiconductor junction to achieve ultrafast recovery (no minority carrier storage) and minimal reverse recovery charge. Its low VF and low Rth(j-c) enable high-efficiency operation in synchronous rectification and freewheeling paths where thermal management and voltage headroom are critical.
The device is rated for repetitive avalanche energy up to 900 W at 10 µs pulses and supports continuous operation at TC = 120 °C with IF(AV) = 30 A. Reverse leakage remains below 80 mA at 125 °C and VRRM, ensuring stable blocking in high-temperature power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum reverse blocking voltage without breakdown; defines safe operating range in 12 V–48 V output rails. |
| IF(AV) | 30 A - Average forward current at TC = 120 °C; enables high-power density designs without forced air cooling. |
| VF (typ.) | 0.50 V @ 15 A, 25 °C - Low conduction loss reduces I²R heating and improves efficiency in 5–12 V output stages. |
| Rth(j-c) | 2.5 °C/W - Enables direct heatsinking via exposed tab; allows >20 W dissipation with <50 °C rise above case. |
| Tj (max.) | 175 °C - High junction temperature rating supports operation in compact, sealed enclosures with limited airflow. |
| IFS M | 380 A @ 10 ms - Robust surge handling for inrush and fault conditions in server PSUs and industrial SMPS. |
| Package | PowerFLAT™ 5x6 - 5 mm × 6 mm × 1 mm low-profile surface-mount package with exposed thermal pad for PCB conduction cooling. |
Pinout & Package
STPS3045DJF-TR uses a 2-terminal PowerFLAT™ 5x6 package with anode and cathode terminals on the bottom side and an exposed thermal pad (cathode-connected). The package height is 1.0 mm maximum, enabling use in ultra-thin power modules and VRMs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to switching node (e.g., MOSFET drain) in buck/flyback freewheeling path; requires low-inductance layout. |
| Cathode | Output current exit point + thermal pad | Electrically and thermally connected to PCB ground plane; must be soldered to ≥4 cm² copper area for rated current. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.50 V typ. @ 15 A, 25 °C - Reduces conduction loss by ~30% vs. comparable 45 V Schottkys with VF > 0.65 V. |
| High avalanche capability | 900 W repetitive peak avalanche power @ 10 µs - Sustains transient overvoltage events without degradation in unclamped inductive switching. |
| Thin 1 mm profile | Max height 1.0 mm - Enables integration into space-constrained 1U server PSUs and laptop adapters where Z-height is ≤1.2 mm. |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant materials - Meets IPC-1752A Class 2 requirements for green electronics manufacturing and end-of-life recycling. |
| Optimized thermal resistance | Rth(j-c) = 2.5 °C/W - Allows >24 W continuous power dissipation with 10 °C rise when mounted on 6 cm² 70 µm copper on FR4. |
Applications
| Telecom AC-DC Rectification | Desktop PSU Secondary Side |
|---|---|
Use Scenario: Input rectification stage in 48 V telecom offline PSUs with PFC front-end and LLC resonant converter. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous rectified LLC secondary, conducting during MOSFET off-time. Use Value: 0.50 V VF minimizes conduction loss at 30 A load, improving full-load efficiency by 0.8–1.2% versus standard Schottkys. | Use Scenario: +12 V output rail rectification in ATX v2.4 desktop power supplies with dual-phase synchronous buck. IC Role / Device Role / Timing Role: Polarity protection and reverse current blocking diode at main 12 V output connector. Use Value: 380 A IFSM withstands hot-plug surges; 175 °C Tj rating ensures reliability under sustained 100% load at 50 °C ambient. |
| Server VRM Freewheeling | Industrial DC-DC Isolation |
Use Scenario: Freewheeling path in multiphase 0.8–1.8 V VRMs for AI accelerators with >500 A total output. IC Role / Device Role / Timing Role: Low-VF catch diode in non-synchronous phase legs during light-load discontinuous conduction mode (DCM). Use Value: 2.5 °C/W Rth(j-c) enables direct thermal coupling to VRM heatsink, maintaining <110 °C junction temp at 30 A per phase. | Use Scenario: Output rectification in isolated 24 V input → 5 V/3.3 V DC-DC modules for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier in forward converter topology with center-tapped transformer. Use Value: 45 V VRRM provides 2× safety margin over 24 V input reflected transients; ECOPACK®2 ensures compliance in industrial environmental certifications. |
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 IF(AV), but TO-220AC package (Rth(j-c) = 2.0 °C/W, height = 9.1 mm) | Requires through-hole mounting and external heatsink; unsuitable for ultra-thin or high-density layouts | Select when mechanical robustness and legacy board compatibility outweigh Z-height constraints |
| ON Semiconductor SB340 | 40 V VRRM, 3 A IF(AV), DO-201AD package - significantly lower current/voltage rating and higher VF (0.55 V min) | Only suitable for low-power auxiliary rails (<5 W); not a functional replacement for primary 30 A outputs | Consider only for cost-sensitive, low-current bias supply applications where derating is acceptable |
Compared with VS-30CPH045 and SB340, STPS3045DJF-TR uniquely combines 30 A current handling, 1 mm profile, and 2.5 °C/W thermal resistance in a surface-mount package-enabling high-power density without compromising thermal performance or board space.
Availability
STPS3045DJF-TR is available at Aetrix Electronics and suitable for telecom power supply, desktop power supply, and industrial DC-DC converter designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for STPS3045DJF-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.
The STPS series targets high-efficiency power conversion, with STPS3045DJF-TR specifically engineered for low-voltage, high-current switch-mode applications demanding minimal conduction loss and superior thermal behavior in constrained spaces.
FAQ
What is the maximum allowable PCB copper area for optimal thermal performance of STPS3045DJF-TR?
The datasheet specifies Rth(j-a) decreases from ~40 °C/W (no copper) to ~6.5 °C/W with 10 cm² of 35 µm copper on FR4. For full 30 A IF(AV) rating, ST recommends ≥6 cm² of 70 µm copper connected directly to the exposed cathode pad using multiple thermal vias to internal ground planes.
Does STPS3045DJF-TR require a gate driver or control signal?
No. STPS3045DJF-TR is a passive two-terminal Schottky rectifier with no control inputs. It conducts when anode voltage exceeds cathode voltage by >0.4 V and blocks when reverse biased. It operates autonomously without drivers, timing signals, or external bias.
Can STPS3045DJF-TR be used in parallel configurations for higher current?
Yes, but only with careful layout: matched trace lengths, symmetrical thermal coupling, and individual current-sharing resistors (0.5–1 mΩ) are required. The device's positive VF temperature coefficient aids natural current sharing, but mismatched thermal paths can cause >20% current imbalance at full load.
Is the PowerFLAT™ 5x6 package lead-free and halogen-free?
Yes. STPS3045DJF-TR carries ECOPACK®2 certification, confirming it is fully RoHS-compliant, lead-free, and halogen-free (Br < 900 ppm, Cl < 900 ppm, total halogens < 1500 ppm), meeting JEDEC J-STD-609A Class 2 requirements for green packaging.
STPS3045DJF-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-PowerVDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 640 mV @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 300 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerFlat™ (5x6)
- Operating Temperature - Junction:
- 150°C (Max)
STPS3045DJF-TR FAQ
1.How can I place an order for STPS3045DJF-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS3045DJF-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 STPS3045DJF-TR reliable?
The price and inventory of STPS3045DJF-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3045DJF-TR is usually 5 days.
3.What payment methods are accepted for STPS3045DJF-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3045DJF-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS3045DJF-TR?
STPS3045DJF-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS3045DJF-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 STPS3045DJF-TR?
For technical support, including STPS3045DJF-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3045DJF-TR requirements.
6.How does Aetrix verify that STPS3045DJF-TR is sourced from the original manufacturer or authorized distributors?
All STPS3045DJF-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 STPS3045DJF-TR meets industry standards.
7.What is the process for return or replacement of STPS3045DJF-TR?
All STPS3045DJF-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS3045DJF-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 STPS3045DJF-TR part is unused and in its original packaging.
Return procedure for STPS3045DJF-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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