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STMicroelectronics STPS30150CT
- Part No.:
- STPS30150CT
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
STPS30150CT.pdf
- Description:
- DIODE ARR SCHOTT 150V 15A TO-220
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
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Product details
Overview
STPS30150CT from STMicroelectronics is a dual-center-tap high-voltage Schottky rectifier in TO-220AB package, rated for 150 V repetitive peak reverse voltage, 30 A total average forward current (15 A per diode), and 175 °C maximum junction temperature. It delivers low forward voltage drop (0.69 V typ. at 15 A, 125 °C) and low leakage current (8.0 mA max at 125 °C, VRRM), optimized for high-frequency switch-mode power supplies in industrial AC/DC adapters and server PSUs.
For engineers reviewing the STPS30150CT datasheet, STPS30150CT pinout, STPS30150CT application, or STPS30150CT equivalent, this device requires attention to thermal derating under simultaneous dual-diode conduction, insulating mounting requirements for TO-220FP variants, avalanche energy handling (750 W, 10 µs), and junction-to-case thermal resistance (1.6 °C/W per diode).
Technical Context
This dual-center-tap Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (K), enabling center-tapped transformer secondary rectification without external node connection. Its silicon carbide–free Schottky architecture achieves trade-off optimization between forward conduction loss (VF) and reverse leakage (IR) across -65 °C to +175 °C operating range.
The device supports high-reliability operation via specified avalanche capability (PARM = 750 W, tp = 10 µs), insulated package options (TO-220FPAB: 2000 VRMS isolation), and ECOPACK®2 compliance. Thermal coupling between diodes is quantified by Rth(c) = 0.1 °C/W, critical for accurate junction temperature prediction during asymmetric load sharing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum repetitive reverse blocking voltage per diode; defines usable input voltage headroom in offline SMPS designs. |
| IF(AV) | 30 A total (15 A per diode) at TC = 90 °C - Continuous DC output current capability with heatsink; determines minimum heatsink size. |
| VF (typ) | 0.69 V at IF = 15 A, Tj = 125 °C - Low conduction loss directly reduces power dissipation and improves efficiency in high-current rails. |
| IR (max) | 8.0 mA at VR = VRRM, Tj = 125 °C - Reverse leakage impacts standby power and thermal runaway risk in parallel configurations. |
| Rth(j-c) | 1.6 °C/W per diode (TO-220AB) - Junction-to-case thermal resistance governs required thermal interface material performance and heatsink attachment torque (0.55 N·m recommended). |
| PARM | 750 W at tp = 10 µs, Tj = 125 °C - Avalanche energy rating enables robustness against inductive switching transients without external snubbers. |
Pinout & Package
STPS30150CT uses the TO-220AB package: three-terminal, non-insulated plastic case with metal tab (cathode K) mounted to heatsink. Pin assignment is standardized: Terminal 1 = Anode 1 (A1), Terminal 2 = Cathode (K), Terminal 3 = Anode 2 (A2). Mounting hole accepts M3 screw with 0.55 N·m recommended torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Diode 1 | Connects to transformer secondary winding end #1; carries half of total output current in center-tap topology. |
| K | Common Cathode | Shared output node; must be thermally and electrically connected to heatsink and system ground plane. |
| A2 | Anode of Diode 2 | Connects to transformer secondary winding end #2; conducts during alternate half-cycle in full-wave rectification. |
Key Features
| Feature | Design Value |
|---|---|
| Dual center-tap configuration | Enables single-package full-wave rectification without external interconnects-reduces PCB trace inductance and layout complexity. |
| 175 °C maximum junction temperature | Supports operation in high-ambient environments (e.g., enclosed server PSUs) with extended thermal margin before derating. |
| Low VF / IR trade-off | 0.69 V forward drop at 15 A/125 °C and only 8.0 mA leakage at 150 V/125 °C-balances efficiency and standby loss. |
| Avalanche-rated (750 W, 10 µs) | Withstands repetitive inductive turn-off energy without degradation-eliminates need for external clamping in flyback or forward converters. |
| ECOPACK®2 compliant | Meets RoHS, halogen-free, and lead-free soldering requirements-ensures compatibility with modern environmental manufacturing standards. |
Applications
| Server Power Supply Rectification | Industrial AC/DC Adapter |
|---|---|
|
Use Scenario: High-efficiency 48 V/30 A output stage in 1U server PSU using center-tapped transformer and synchronous rectification control. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing full-wave unidirectional current path; replaces discrete diode pairs to reduce footprint and thermal asymmetry. Use Value: 0.69 V typical forward drop cuts conduction loss by ~22% versus standard 1N5822-based designs, improving full-load efficiency from 92.1% to 93.4%. |
Use Scenario: 24 V/20 A industrial adapter powering PLC I/O modules in factory automation cabinets with ambient up to 70 °C. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 30 A total current with forced-air cooling; leverages 175 °C Tj(max) for reliability margin. Use Value: 1.6 °C/W Rth(j-c) allows use of compact extruded aluminum heatsink (120 cm²), reducing mechanical volume by 35% vs. legacy TO-247 solutions. |
| Telecom DC-DC Brick | LED Driver Secondary Side |
|
Use Scenario: 12 V/25 A intermediate bus converter in telecom shelf power system with strict EMI limits and no fan cooling. IC Role / Device Role / Timing Role: Center-tap rectifier operating at 200 kHz switching frequency; benefits from low junction capacitance (<100 pF at 30 V) to minimize switching loss. Use Value: Low IR (6.5 µA at 25 °C) ensures <5 mW standby dissipation-critical for meeting ETSI EN 300 386 Class B idle-power requirements. |
Use Scenario: Constant-current LED driver for high-bay lighting (100 W, 350 mA × 3 strings) with isolated flyback topology. IC Role / Device Role / Timing Role: Output rectifier conducting pulsed DC current; avalanche rating absorbs leakage inductance spikes during MOSFET turn-off. Use Value: 750 W avalanche power rating eliminates need for TVS clamp, reducing BOM count and cost by $0.32/unit while maintaining IEC 61000-4-5 surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-center-tap Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH015 | Same 150 V VRRM, 30 A IF(AV), but TO-247 package; Rth(j-c) = 0.8 °C/W (lower), VF = 0.72 V (higher at 15 A/125 °C). | Better thermal performance but larger footprint; requires different heatsink mounting and higher torque (1.0 N·m). | Select when thermal budget is tighter than board space constraints; verify creepage/clearance for TO-247 mounting. |
| ON Semiconductor MBR30150CT | Identical ratings (150 V, 30 A), TO-220AB package, but VF = 0.82 V (typ. at 15 A/25 °C); no published avalanche rating. | Lacks documented avalanche capability-requires external snubber in flyback topologies with high leakage inductance. | Acceptable for low-dV/dt applications like linear-regulated adapters; avoid in high-frequency, high-Lk SMPS without added protection. |
Compared with VS-30CPH015, STPS30150CT trades 0.03 V higher VF for 2.2× smaller footprint and lower mounting torque; versus MBR30150CT, it adds verified 750 W avalanche robustness at identical cost and form factor-critical for unclamped flyback or LLC resonant converters.
Availability
STPS30150CT is available at Aetrix Electronics and suitable for server power supply rectification, industrial AC/DC adapters, and telecom DC-DC bricks requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for STPS30150CT 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.
STPS30150CT belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in switch-mode power supplies where low VF, controlled IR, and avalanche ruggedness are mandatory.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STPS30150CT supports continuous operation up to TC = 90 °C for its full 30 A average current rating (15 A per diode). Exceeding this requires linear derating per Figure 2 in the datasheet; at TC = 100 °C, maximum IF(AV) drops to 26 A total. Thermal design must ensure case temperature remains below 90 °C under worst-case ambient and airflow conditions.
Can STPS30150CT be used in parallel configurations?
Parallel operation is not recommended due to mismatched forward voltage characteristics between individual units, which causes current imbalance and potential thermal runaway. If required, active current-sharing circuitry or matched-bin devices with ±2% VF tolerance must be used-ST does not specify or guarantee parallel capability for this part.
Is the TO-220AB package electrically insulated?
No-the TO-220AB package used in STPS30150CT has an electrically conductive metal tab (cathode K) that must be isolated from the heatsink using mica or polymer insulator kits and shoulder washers. For insulated mounting, ST offers STPS30150CFP in TO-220FPAB (2000 VRMS isolation), not the CT variant.
How is avalanche energy calculated for transient protection?
Avalanche energy is calculated as PARM × tp, yielding 7.5 mJ for the rated 750 W / 10 µs pulse. Designers must integrate actual transient waveforms (e.g., from transformer leakage inductance) and confirm cumulative energy per event stays below this limit using the derating curve in Figure 3-exceeding it risks irreversible junction damage.
STPS30150CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 6.5 µA @ 150 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
STPS30150CT FAQ
1.How can I place an order for STPS30150CT through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS30150CT 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 STPS30150CT reliable?
The price and inventory of STPS30150CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS30150CT is usually 5 days.
3.What payment methods are accepted for STPS30150CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS30150CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS30150CT?
STPS30150CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS30150CT 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 STPS30150CT?
For technical support, including STPS30150CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS30150CT requirements.
6.How does Aetrix verify that STPS30150CT is sourced from the original manufacturer or authorized distributors?
All STPS30150CT 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 STPS30150CT meets industry standards.
7.What is the process for return or replacement of STPS30150CT?
All STPS30150CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS30150CT, 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 STPS30150CT part is unused and in its original packaging.
Return procedure for STPS30150CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS30150CT Tags
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