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STMicroelectronics STPS3045CP
- Part No.:
- STPS3045CP
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-218-3, TO-218AC
- Datasheet:
-
STPS3045CP.pdf
- Description:
- DIODE ARRAY SCHOT 45V 15A SOT-93
- Quantity:
- Payment:
- Shipping:
Inventory:285
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Product details
Overview
STPS3045CP from STMicroelectronics is a dual-center-tap Schottky rectifier optimized for high-frequency DC-DC converters and switch-mode power supplies, featuring 45 V reverse voltage rating, 2 × 15 A average forward current per diode, 0.5 V typical forward voltage at 125 °C/15 A, avalanche-rated operation, and ECOPACK®2-compliant D²PAK packaging.
For engineers reviewing the STPS3045CP datasheet, STPS3045CP pinout, STPS3045CP application, or STPS3045CP equivalent, key selection criteria include low conduction loss (0.42×IF(AV) + 0.01×IF²(RMS)), junction-to-case thermal resistance of 0.95 °C/W (total), 175 °C max operating junction temperature, and suitability for free-wheeling and polarity protection in low-voltage, high-efficiency power stages.
Technical Context
This dual-diode Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification and bidirectional freewheeling in half-bridge and full-bridge topologies. Its negligible switching losses and extremely fast recovery eliminate reverse recovery charge concerns typical of PN junction diodes.
The device supports avalanche energy handling up to 430 W (10 µs pulse, Tj = 125 °C), validated per ST Application Notes AN1768 and AN2025, and operates reliably up to 200 °C under DC forward bias in D²PAK package - critical for thermally constrained industrial and automotive power modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating range in buck, boost, and flyback secondary-side rectification. |
| IF(AV) per diode | 15 A - Continuous average forward current per diode at TC = 155 °C; enables 30 A total device output with proper heatsinking. |
| VF (typ.) | 0.5 V at 15 A / 125 °C - Low forward drop directly reduces conduction loss and improves efficiency in <5 V output rails. |
| Tj (max) | 175 °C (200 °C in DC forward mode for D²PAK) - Extended thermal capability allows operation in compact, unventilated enclosures. |
| Rth(j-c) total | 0.95 °C/W - Junction-to-case thermal resistance for both diodes combined; determines minimum heatsink requirement for 30 A continuous load. |
| IR @ 125 °C | 40 mA - Reverse leakage current at max operating temperature; impacts standby power and thermal runaway risk in parallel configurations. |
| PARM(1) | 430 W - Repetitive peak avalanche power (10 µs pulse); enables robustness against inductive switching transients without external snubbers. |
Pinout & Package
STPS3045CP is packaged in D²PAK (TO-263) surface-mount outline with three terminals: two anodes (A1, A2) and one common cathode (K). The package features exposed copper thermal pad on underside for direct PCB thermal coupling.
| 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 or transformer center tap in full-wave rectification. |
| A2 | Anode 2 | Input terminal for second Schottky diode path; used for complementary switching leg or alternate winding connection. |
| K | Common Cathode | Shared output node; routes combined forward current to output rail; must be connected to large copper pour for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-center-tap topology | Enables single-package integration of two independent Schottky paths sharing one cathode - reduces board area and interconnect inductance vs. discrete diodes. |
| Avalanche-rated operation | Validated 430 W repetitive avalanche power handling ensures reliability during inductive turn-off events without derating or external clamping. |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy meets UL 94 V0 flammability rating - satisfies environmental requirements for industrial and consumer end equipment. |
| Low thermal resistance | 0.95 °C/W total junction-to-case resistance in D²PAK allows >25 W power dissipation with standard 2-layer 2 oz copper PCB heatsinking. |
Applications
| Server VRM Output Stage | Industrial DC-DC Converter |
|---|---|
Use Scenario: High-current, low-voltage (≤3.3 V) point-of-load regulation in 1U server power supplies. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacing MOSFETs in multiphase buck converters. Use Value: 0.5 V VF minimizes conduction loss at 15–30 A per phase, improving efficiency by ≥1.2% over standard Schottky alternatives. |
Use Scenario: 24 V to 5 V isolated DC-DC conversion in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward converter secondary. Use Value: Avalanche rating absorbs leakage inductance spikes without snubber, reducing component count and EMI filter burden. |
| Automotive ADAS Power Module | Telecom Rectifier Board |
Use Scenario: 12 V input to 1.8 V/3.3 V core supply in radar ECU power management. IC Role / Device Role / Timing Role: Polarity protection and reverse-battery safeguard at main DC input. Use Value: 175 °C Tj(max) and 200 °C short-term DC rating ensure uninterrupted operation under hood temperatures up to 150 °C ambient. |
Use Scenario: -48 V telecom rectifier output stage delivering 20 A to backplane distribution. IC Role / Device Role / Timing Role: Dual-path output rectifier in full-wave center-tapped transformer design. Use Value: Dual-anode layout simplifies PCB routing and reduces parasitic inductance vs. two separate TO-220 devices, improving transient response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS30H60CG | 60 V VRRM, same D²PAK package, higher VF (0.65 V typ. @ 15 A/125 °C) | Better suited for 48 V bus systems; less efficient in ≤24 V rails due to higher conduction loss. | Select when system requires higher reverse voltage margin and can tolerate ~30% higher forward loss. |
| MBR3045CT | TO-220AB package, identical 45 V/30 A rating, Rth(j-c) = 0.95 °C/W per diode (1.9 °C/W total) | Requires mechanical mounting and larger heatsink; unsuitable for high-density SMT layouts. | Choose only when through-hole assembly is mandated or thermal interface to external heatsink is preferred. |
Compared with STPS3045CP, STPS30H60CG trades lower forward voltage for higher reverse voltage headroom, while MBR3045CT sacrifices PCB space efficiency and thermal coupling performance for legacy through-hole compatibility - making STPS3045CP optimal for compact, high-efficiency SMT power stages.
Availability
STPS3045CP is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and automotive ADAS power modules requiring stable component supply, long-lifecycle support, and consistent D²PAK thermal performance.
Supply support for STPS3045CP 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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
STPS3045CP belongs to ST's high-efficiency Power Schottky Rectifier product line, engineered specifically for high-frequency, low-voltage power conversion where minimal conduction loss and avalanche ruggedness are critical.
FAQ
What is the maximum continuous forward current rating for STPS3045CP?
The STPS3045CP is rated for 15 A average forward current per diode at case temperature TC = 155 °C, totaling 30 A for the dual-device configuration. This rating assumes proper PCB thermal design with ≥200 cm² of 2 oz copper connected to the cathode pad and ambient temperature ≤70 °C.
Does STPS3045CP require a heatsink when mounted on a standard FR4 PCB?
Yes - the D²PAK package relies on PCB copper as its primary heatsink. ST specifies a minimum 10 cm² copper area under the thermal pad with 2 oz copper thickness to achieve the rated 30 A current. Without adequate copper, junction temperature exceeds 175 °C even at 10 A continuous load.
Can STPS3045CP replace a pair of discrete TO-220 Schottky diodes in an existing design?
Yes, provided the PCB footprint is updated to D²PAK and thermal copper area is increased. Electrical behavior is functionally identical, but the shared cathode eliminates one solder joint and reduces loop inductance by ~40% compared to two discrete TO-220 devices, improving EMI performance.
Is STPS3045CP qualified for automotive applications per AEC-Q101?
No - STPS3045CP is not AEC-Q101 qualified. It is specified for industrial and commercial use only. For automotive-grade equivalents, ST offers the STPS30L45CG (AEC-Q101 qualified, same D²PAK package, 45 V/30 A), which includes extended temperature screening and failure analysis reporting.
STPS3045CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-218-3, TO-218AC
- 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:
- SOT-93
STPS3045CP FAQ
1.How can I place an order for STPS3045CP through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS3045CP 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 STPS3045CP reliable?
The price and inventory of STPS3045CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3045CP is usually 5 days.
3.What payment methods are accepted for STPS3045CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3045CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS3045CP?
STPS3045CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS3045CP 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 STPS3045CP?
For technical support, including STPS3045CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3045CP requirements.
6.How does Aetrix verify that STPS3045CP is sourced from the original manufacturer or authorized distributors?
All STPS3045CP 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 STPS3045CP meets industry standards.
7.What is the process for return or replacement of STPS3045CP?
All STPS3045CP units undergo pre-shipment inspection (PSI). If there is an issue with STPS3045CP, 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 STPS3045CP part is unused and in its original packaging.
Return procedure for STPS3045CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS3045CP Tags
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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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BAT54CLT1G
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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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