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STMicroelectronics STPS3045CR
- Part No.:
- STPS3045CR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Datasheet:
-
STPS3045CR.pdf
- Description:
- DIODE ARRAY SCHOTT 45V 15A TO262
- Quantity:
- Payment:
- Shipping:
Inventory:997
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Product details
Overview
STPS3045CR from STMicroelectronics is a dual center-tap Schottky rectifier rated for 45 V repetitive peak reverse voltage, 2 × 15 A average forward current per diode, and 0.5 V typical forward voltage at 125 °C/15 A - optimized for low-voltage, high-frequency DC-DC converters and SMPS free-wheeling paths in industrial power supplies.
For engineers reviewing the STPS3045CR datasheet, STPS3045CR pinout, STPS3045CR application, or STPS3045CR equivalent, key selection criteria include avalanche-rated ruggedness (430 W peak), junction-to-case thermal resistance of 0.95 °C/W (D²PAK), and ECOPACK®2 compliance - critical for thermally constrained 175 °C junction operation and RoHS-compliant production.
Technical Context
This dual-diode Schottky rectifier integrates two independent anode-cathode junctions 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, making it suitable for >100 kHz switching frequencies without snubbers.
The device supports avalanche energy handling up to 430 W (10 µs pulse, Tj = 125 °C) and operates with maximum junction temperature up to 200 °C under DC forward bias in D²PAK package - validated per ST Application Notes AN1768 and AN2025 for converter-level robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - supports input rails up to 36 V nominal with 25 % safety margin in 48 V systems |
| IF(AV) per diode | 15 A - enables continuous 30 A total output in dual-path configurations |
| VF (typ.) | 0.5 V @ 125 °C / 15 A - reduces conduction loss to ~7.5 W per diode at full load |
| Tj (max) | 175 °C (200 °C in DC forward mode for D²PAK) - allows compact heatsinking in sealed enclosures |
| Rth(j-c) | 0.95 °C/W (total, D²PAK) - permits 31.6 W dissipation before reaching 175 °C junction limit |
| IR @ 125 °C | 40 mA - limits leakage-induced standby loss in high-temp environments |
| IFSM | 220 A (10 ms sinusoidal) - withstands inrush currents in hot-plug and soft-start circuits |
Pinout & Package
STPS3045CR is available in D²PAK (TO-263) surface-mount package - thermally enhanced with exposed copper tab for direct PCB heatsinking. Pinout reflects dual-diode center-tap topology: terminals are Cathode (K), Anode 1 (A1), and Anode 2 (A2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| K | Common cathode | Shared return path for both diodes; electrically tied to exposed metal tab for thermal and electrical grounding |
| A1 | Anode of Diode 1 | Input node for first rectification path; used in dual-output or interleaved converter legs |
| A2 | Anode of Diode 2 | Input node for second rectification path; enables symmetrical current sharing in center-tapped transformer designs |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche-rated ruggedness | 430 W peak avalanche power (10 µs, Tj = 125 °C) - eliminates need for external clamping in transient-prone DC-DC stages |
| Ultra-low VF | 0.5 V typ. @ 125 °C/15 A - cuts conduction loss by ≥30 % vs. standard Schottkys in same package |
| Dual-diode center-tap topology | Single-package integration of two matched Schottky junctions - reduces board area and parasitic inductance vs. discrete dual-Diodes |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy and lead finish - meets IPC-J-STD-020 moisture sensitivity level 3 (MSL3) for reflow assembly |
| High-Tj capability | 200 °C max junction temperature under DC forward bias (D²PAK) - extends lifetime in thermally aggressive environments like motor drives |
Applications
| Server VRM Power Stage | Industrial DC-DC Converter |
|---|---|
Use Scenario: High-efficiency 12 V → 1 V/30 A point-of-load regulation in rack-mounted servers. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacing MOSFETs in multiphase buck converters. Use Value: 0.5 V VF minimizes I²R loss at 15 A per phase, reducing thermal load on VRM PCB and enabling higher power density. | Use Scenario: 24 V input isolated DC-DC module delivering ±15 V outputs for PLC analog I/O cards. IC Role / Device Role / Timing Role: Center-tapped secondary rectifier in forward converter with dual complementary outputs. Use Value: Matched A1/A2 diodes ensure balanced current sharing and ±0.5 % output voltage regulation across loads. |
| Solar Microinverter DC Link | Automotive On-Board Charger (OBC) |
Use Scenario: 600 V DC link rectification in string-level microinverters operating at 50–100 kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling diode in H-bridge IGBT gate drive and boost stage clamp path. Use Value: Negligible reverse recovery eliminates shoot-through risk and EMI spikes during hard-switching transitions. | Use Scenario: 400 V battery-fed bidirectional OBC with AC/DC PFC and DC/DC isolation stages. IC Role / Device Role / Timing Role: Output rectifier in LLC resonant DC/DC stage delivering 12 V auxiliary power. Use Value: 175 °C Tj rating ensures reliability under under-hood ambient temperatures up to 105 °C with minimal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS30H45CG | Same D²PAK package, 30 A total IF(AV), VF = 0.52 V @ 125 °C - higher current rating but 4 % higher VF | Preferred for 30 A single-path designs; less optimal for dual-path current balancing | Select when total output current exceeds 30 A and center-tap symmetry is not required |
| VS-30CTH04-M3/45 | Vishay dual Schottky in TO-220AB; VF = 0.54 V @ 125 °C, Rth(j-c) = 1.6 °C/W - lower thermal performance, through-hole mounting | Suitable for legacy through-hole production; requires larger heatsink for same power dissipation | Choose only if D²PAK reflow compatibility is unavailable or mechanical retention mandates through-hole |
Compared with STPS3045CR, STPS30H45CG offers higher current headroom at slightly reduced efficiency, while VS-30CTH04-M3/45 trades thermal performance and mounting flexibility for broader distributor availability and legacy design reuse.
Availability
STPS3045CR is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and solar microinverters requiring stable component supply with full production status and long-term lifecycle support.
Supply support for STPS3045CR 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 silicon solutions for automotive, industrial, and power management applications.
The STPS series targets high-efficiency power conversion, with STPS3045CR specifically engineered for low-VF, high-reliability Schottky rectification in thermally demanding, high-frequency switch-mode topologies.
FAQ
What is the maximum allowable case temperature for STPS3045CR in D²PAK package?
The D²PAK package supports a maximum junction temperature of 200 °C under DC forward bias conditions, with corresponding case temperature limited by thermal design. At 30 A total forward current and 0.95 °C/W Rth(j-c), case temperature must remain ≤170 °C to maintain safe 200 °C junction margin - verified per ST's AN2025 thermal validation methodology.
Does STPS3045CR require a heatsink in typical 15 A per diode operation?
Yes - even with D²PAK's low Rth(j-c) of 0.95 °C/W, dissipating ~15 W per diode (30 W total) at 125 °C junction requires ≥20 cm² of 2 oz copper pour with thermal vias. ST recommends using the exposed K tab as primary thermal interface to internal ground plane or external heatsink, per Figure 12 footprint guidelines.
How is avalanche capability validated for STPS3045CR?
ST validates avalanche energy per AN1768 using controlled 10 µs pulses at Tj = 125 °C, measuring peak power (430 W) and cumulative energy tolerance. This testing confirms survivability during inductive turn-off transients in DC-DC converters - no external snubber needed if system peak voltage stays within 45 V VRRM rating.
Can STPS3045CR be used in place of a single 30 A Schottky diode?
No - STPS3045CR contains two independent 15 A diodes with shared cathode, not a single 30 A device. It is designed for center-tapped transformer or dual-output topologies. Using only one anode (A1 or A2) halves usable current and unbalances thermal distribution, violating derating rules in Table 2 and risking premature failure.
STPS3045CR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- 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-262 (I2PAK)
STPS3045CR FAQ
1.How can I place an order for STPS3045CR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS3045CR 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 STPS3045CR reliable?
The price and inventory of STPS3045CR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3045CR is usually 5 days.
3.What payment methods are accepted for STPS3045CR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3045CR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS3045CR?
STPS3045CR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS3045CR 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 STPS3045CR?
For technical support, including STPS3045CR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3045CR requirements.
6.How does Aetrix verify that STPS3045CR is sourced from the original manufacturer or authorized distributors?
All STPS3045CR 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 STPS3045CR meets industry standards.
7.What is the process for return or replacement of STPS3045CR?
All STPS3045CR units undergo pre-shipment inspection (PSI). If there is an issue with STPS3045CR, 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 STPS3045CR part is unused and in its original packaging.
Return procedure for STPS3045CR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS3045CR 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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