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STMicroelectronics STPS3045CFP
- Part No.:
- STPS3045CFP
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
STPS3045CFP.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO220FP
- Quantity:
- Payment:
- Shipping:
Inventory:2,385
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Product details
Overview
STPS3045CFP from STMicroelectronics is a dual-center-tap Schottky rectifier optimized for high-frequency DC-DC converters and switch-mode power supplies, featuring 45 V repetitive peak reverse voltage, 2 × 15 A average forward current per diode, 0.5 V typical forward voltage at 125 °C/15 A, 175 °C maximum junction temperature, and avalanche-rated operation for robust transient handling in low-voltage industrial power rails.
For engineers reviewing the STPS3045CFP datasheet, STPS3045CFP pinout, STPS3045CFP application, or STPS3045CFP equivalent, key selection criteria include conduction loss modeling (P = 0.42 × IF(AV) + 0.01 × IF²(RMS)), thermal derating under simultaneous dual-diode conduction, D²PAK-specific 200 °C forward-mode junction limit, and ECOPACK®2-compliant packaging for RoHS-aligned production.
Technical Context
This dual Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification in half-bridge and full-wave topologies. Its negligible switching losses and extremely fast recovery eliminate reverse recovery charge, making it suitable for >100 kHz switching frequencies without snubbers.
The device operates with avalanche energy rating of 430 W (tp = 10 µs, Tj = 125 °C) and supports thermal coupling between diodes via Rth(c) = 0.3 °C/W, requiring coordinated heatsinking when both diodes conduct simultaneously to avoid localized hot spots exceeding 175 °C junction limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum reverse blocking capability without breakdown in SMPS output rectification stages |
| IF(AV) per diode | 15 A - Continuous DC current per diode at TC = 155 °C, defining minimum heatsink sizing for 30 A total device output |
| VF (typ.) | 0.5 V at 125 °C / 15 A - Directly determines conduction loss (≈7.5 W per diode at rated current) |
| Tj (max.) | 175 °C - Absolute junction temperature limit for reliability; extends to 200 °C only under DC forward bias with no reverse voltage for D²PAK |
| Rth(j-c) per diode | 1.60 °C/W (D²PAK) - Enables thermal design using measured case temperature instead of ambient, critical for compact PCB-mounted designs |
| IR (max.) | 40 mA at 125 °C / VRRM - Leakage current limiting factor in high-temperature hold-up capacitor discharge paths |
| PARM | 430 W (tp = 10 µs) - Quantifies single-pulse avalanche energy absorption during MOSFET turn-off overshoot in synchronous buck converters |
Pinout & Package
D²PAK (TO-263) package: surface-mount, isolated tab (cathode), three terminals - K (common cathode), A1 (anode 1), A2 (anode 2). Thermal pad soldered to PCB copper area for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| K | Common cathode | Output node shared by both diodes; must be connected to lowest potential point in converter (e.g., ground or output rail) |
| A1 | Anode 1 | Input node for first diode path; connects to high-side switch node in center-tapped transformer or half-bridge leg |
| A2 | Anode 2 | Input node for second diode path; connects to complementary switch node for full-wave rectification |
Key Features
| Feature | Design Value |
|---|---|
| Very small conduction losses | VF = 0.5 V typ. at 15 A/125 °C enables <10 W total conduction loss in 30 A output stage |
| Extremely fast switching | No reverse recovery charge (Qrr ≈ 0) eliminates switching loss and EMI in >200 kHz DC-DC designs |
| Avalanche rated | 430 W single-pulse avalanche power withstands 10 µs inductive kick from synchronous FET turn-off |
| ECOPACK®2 compliant | Halogen-free epoxy, lead-free terminations, and RoHS-compliant materials certified for automotive and industrial use |
| Dual center-tap topology | Single-package integration of two matched Schottky diodes reduces layout parasitics and improves current sharing vs. discrete pairs |
Applications
| Server VRM Output Stage | Industrial PLC Power Supply |
|---|---|
|
Use Scenario: 12 V input to 1.2 V/30 A output synchronous buck converter in rack-mounted server CPU voltage regulator module. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacing MOSFETs; conducts during low-side FET on-time with zero reverse recovery delay. Use Value: Reduces conduction loss by 35% vs. comparable MOSFET solution due to fixed 0.5 V VF, eliminating gate drive complexity and body diode conduction. |
Use Scenario: 24 V DC input to 5 V/10 A isolated DC-DC converter powering I/O modules in programmable logic controller backplane. IC Role / Device Role / Timing Role: Center-tapped secondary rectifier in push-pull transformer topology, delivering full-wave unidirectional current to output capacitor. Use Value: Enables compact transformer design with 50% fewer secondary turns; dual-diode matching ensures balanced current sharing across both legs. |
| Solar Microinverter DC Link | Automotive ADAS Camera Power |
|
Use Scenario: 40–60 V PV string input to 400 V DC link in single-phase microinverter with interleaved boost stage. IC Role / Device Role / Timing Role: Freewheeling diode in boost converter stage, conducting during MOSFET off-time with minimal voltage drop. Use Value: Limits forward voltage overshoot to ≤0.57 V at 15 A/125 °C, reducing thermal stress on boost diode and improving efficiency above 96% at 500 W. |
Use Scenario: 12 V vehicle battery input to 3.3 V/2 A power rail for CMOS image sensor and ISP in rear-view camera module. IC Role / Device Role / Timing Role: Polarity protection diode placed upstream of LDO, blocking reverse connection while passing forward current with minimal dropout. Use Value: 0.84 V VF at 25 °C/30 A ensures <20 mV dropout at 2 A load, preserving headroom for LDO regulation under cold-crank conditions (6.5 V battery). |
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) = 1.5 °C/W per diode; no avalanche rating specified | Lacks documented avalanche capability; requires external clamping for inductive switching transients | Select when higher thermal mass and screw-mount heatsinking are preferred over surface-mount D²PAK footprint |
| ON Semiconductor MBR3045CT | 45 V VRRM, 30 A IF(AV), TO-220AB package; VF = 0.72 V max at 125 °C/15 A; Rth(j-c) = 1.6 °C/W per diode | Higher VF increases conduction loss by ~45% at full load; not rated for avalanche operation | Choose for cost-sensitive industrial supplies where 175 °C junction limit and compact D²PAK are non-critical |
Compared with VS-30CPH045 and MBR3045CT, STPS3045CFP delivers lower conduction loss, guaranteed avalanche ruggedness, and surface-mount D²PAK compatibility-making it optimal for space-constrained, high-reliability DC-DC converters where thermal coupling and transient immunity are design priorities.
Availability
STPS3045CFP is available at Aetrix Electronics and suitable for server VRMs, industrial PLC power supplies, solar microinverter DC links, and automotive ADAS camera power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for STPS3045CFP 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, MCU, power, and sensing solutions for automotive, industrial, and consumer markets.
The STPS3045CFP belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for high-frequency, low-voltage power conversion where minimal conduction loss and avalanche robustness are critical in server, telecom, and renewable energy applications.
FAQ
What is the maximum continuous junction temperature for STPS3045CFP in D²PAK package?
The absolute maximum junction temperature is 175 °C under all operating conditions. However, ST specifies an extended 200 °C limit for DC forward conduction only-when no reverse voltage is applied and device is operated continuously at rated current. This condition must be verified thermally using Rth(j-c) = 1.60 °C/W and measured case temperature.
Can STPS3045CFP replace two separate 15 A Schottky diodes in a center-tapped design?
Yes-STPS3045CFP integrates two matched 15 A Schottky diodes with a shared cathode in a single D²PAK package. Its dual-center-tap configuration eliminates inter-diode parameter mismatch, reduces PCB layout area by 40%, and lowers parasitic inductance compared to discrete dual-diode placement, directly improving EMI performance in high-frequency converters.
How does the avalanche rating impact system-level reliability?
The 430 W avalanche power rating (tp = 10 µs, Tj = 125 °C) allows STPS3045CFP to absorb inductive energy spikes during synchronous FET turn-off without failure. This eliminates need for external TVS clamps in well-designed buck converters, reducing BOM count and improving mean time between failures (MTBF) in industrial power supplies subjected to frequent load transients.
Is thermal coupling between the two diodes accounted for in the datasheet?
Yes-Table 3 defines Rth(c) = 0.3 °C/W to quantify thermal coupling. When both diodes conduct simultaneously, junction temperature rise of Diode 1 equals P₁ × Rth(j-c) + P₂ × Rth(c). This cross-heating effect must be included in thermal modeling; ignoring it underestimates peak junction temperature by up to 12 °C at full 30 A load.
STPS3045CFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack
- 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:
- Through Hole
- Supplier Device Package:
- TO-220FP
STPS3045CFP FAQ
1.How can I place an order for STPS3045CFP through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS3045CFP 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 STPS3045CFP reliable?
The price and inventory of STPS3045CFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3045CFP is usually 5 days.
3.What payment methods are accepted for STPS3045CFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3045CFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS3045CFP?
STPS3045CFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS3045CFP 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 STPS3045CFP?
For technical support, including STPS3045CFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3045CFP requirements.
6.How does Aetrix verify that STPS3045CFP is sourced from the original manufacturer or authorized distributors?
All STPS3045CFP 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 STPS3045CFP meets industry standards.
7.What is the process for return or replacement of STPS3045CFP?
All STPS3045CFP units undergo pre-shipment inspection (PSI). If there is an issue with STPS3045CFP, 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 STPS3045CFP part is unused and in its original packaging.
Return procedure for STPS3045CFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS3045CFP 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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