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STMicroelectronics STPS40150CT
- Part No.:
- STPS40150CT
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
STPS40150CT.pdf
- Description:
- DIODE ARR SCHOTT 150V 20A TO-220
- Quantity:
- Payment:
- Shipping:
Inventory:681
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Product details
Overview
STPS40150CT from STMicroelectronics is a dual common-cathode Schottky rectifier in TO-220AB package, rated for 150 V repetitive peak reverse voltage and 2 × 20 A average forward current per diode at TC = 150 °C, with typical forward voltage drop of 0.69 V at 125 °C and 20 A - optimized for high-frequency SMPS and telecom DC/DC converters.
For engineers reviewing the STPS40150CT datasheet, STPS40150CT pinout, STPS40150CT application, or STPS40150CT equivalent, key selection criteria include thermal resistance (Rth(j-c) = 1.20 °C/W per diode), low leakage (<8 µA @ 25 °C), ECOPACK®2 compliance, and dual-diode center-tab configuration enabling synchronous rectification in isolated topologies.
Technical Context
This device integrates two independent Schottky diodes sharing a common cathode terminal and thermally coupled junctions in a single TO-220AB package. Its design targets high-efficiency, high-frequency power conversion where low forward voltage and fast recovery eliminate minority-carrier storage delay.
Thermal coupling between diodes is quantified by Rth(c) = 0.50 °C/W, enabling accurate junction temperature estimation when both diodes conduct simultaneously. The device operates up to Tj = 175 °C and supports surge currents up to 250 A (10 ms sinusoidal), making it suitable for transient-heavy telecom and industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - maximum repetitive reverse blocking voltage per diode, defining safe operating range in boost/flyback clamp circuits |
| IF(AV) per diode | 20 A at TC = 150 °C - continuous forward current capability per diode under heatsink-limited thermal conditions |
| VF(typ.) | 0.69 V at 20 A, 125 °C - directly determines conduction loss (P ≈ 0.64×IF(AV) + 0.0055×IF²(RMS)) in high-efficiency designs |
| Rth(j-c) | 1.20 °C/W per diode - enables precise thermal modeling when mounted on standard TO-220 heatsinks |
| IR(max) | 11 mA at 125 °C, VR = VRRM - defines reverse leakage contribution to standby power loss in offline adapters |
| Tj(max) | 175 °C - allows operation in high-ambient environments without derating below full current rating |
Pinout & Package
TO-220AB package with center-tab cathode configuration: three terminals - Anode 1, Anode 2, and common Cathode (tab). Metal tab is electrically connected to cathode and serves as primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input terminal for first Schottky diode | Connects to transformer secondary or switching node in synchronous rectifier stage |
| Anode 2 | Input terminal for second Schottky diode | Enables dual-output or interleaved converter configurations with shared cathode return |
| Cathode (Tab) | Common output terminal and thermal interface | Must be electrically isolated from chassis but thermally bonded to heatsink; carries full combined diode current |
Key Features
| Feature | Design Value |
|---|---|
| High junction temperature capability | Tj(max) = 175 °C enables operation in sealed enclosures or high-ambient telecom systems without forced air |
| Low thermal resistance | Rth(j-c) = 1.20 °C/W per diode reduces heatsink size and cost in space-constrained 1U power supplies |
| ECOPACK®2 compliance | Meets RoHS and halogen-free requirements for industrial and telecom equipment with extended lifecycle support |
| Optimized VF–IR trade-off | 0.69 V VF at 20 A / 125 °C with only 11 mA IR at same condition - balances efficiency and leakage in 48 V input systems |
Applications
| Telecom DC/DC Converters | Server VRMs |
|---|---|
Use Scenario: 48 V input to 12 V/5 V point-of-load conversion in telecom shelf power systems. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacing MOSFETs in active-clamp forward or phase-shifted full-bridge topologies. Use Value: Eliminates gate drive complexity and body diode conduction loss while maintaining <0.7 V forward drop at full load and 125 °C ambient. |
Use Scenario: High-current, low-voltage output stage in server voltage regulator modules feeding CPUs/GPUs. IC Role / Device Role / Timing Role: Dual-anode configuration supports interleaved output phases sharing a common cathode return to reduce PCB layout inductance. Use Value: Enables parallel diode operation with matched thermal coupling (Rth(c) = 0.50 °C/W), minimizing current imbalance and hot-spot formation. |
| Industrial SMPS | LED Driver Power Stages |
Use Scenario: 300–400 V DC bus to 24 V/48 V isolated output in factory automation power supplies. IC Role / Device Role / Timing Role: Output rectifier in LLC resonant converters operating above 200 kHz switching frequency. Use Value: Zero-recovery behavior prevents reverse recovery spikes, reducing EMI filter burden and improving reliability in harsh EMC environments. |
Use Scenario: Constant-current LED driver with multiple string outputs requiring independent anode routing. IC Role / Device Role / Timing Role: Dual-anode topology allows separate current paths for two LED strings while sharing cathode return and thermal mass. Use Value: Reduces component count versus discrete diodes and improves thermal uniformity across strings under varying load conditions. |
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-40CPH015 | Same 150 V VRRM, 40 A total IF(AV), but TO-247 package with higher Rth(j-c) = 1.5 °C/W per diode | Requires larger heatsink area due to lower thermal efficiency; not pin-compatible with TO-220AB footprint | Select when higher surge rating (300 A IFSM) is prioritized over thermal density |
| ON Semiconductor MBR40150CT | Identical TO-220AB pinout and 150 V rating, but VF = 0.82 V (typ.) at 20 A/125 °C and Tj(max) = 150 °C | Limited to lower ambient temperatures; higher conduction loss increases thermal stress in compact 1U designs | Select only if ST's 175 °C rating and 0.69 V VF are not required for the target thermal envelope |
Compared with VS-40CPH015 and MBR40150CT, STPS40150CT delivers superior thermal performance (1.20 °C/W vs. 1.50/1.35 °C/W) and lower conduction loss at elevated temperature - critical for high-power-density telecom and server power supplies where junction temperature margin directly impacts lifetime.
Availability
STPS40150CT is available at Aetrix Electronics and suitable for telecom DC/DC converters, server VRMs, and industrial SMPS requiring stable component supply with long-term manufacturability and ECOPACK®2 compliance.
Supply support for STPS40150CT 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, designing and manufacturing analog, power, microcontroller, and sensor solutions for automotive, industrial, and consumer markets.
STPS40150CT belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in telecom infrastructure and enterprise computing power supplies.
FAQ
What is the maximum continuous forward current rating for STPS40150CT?
The STPS40150CT is rated for 20 A average forward current per diode at case temperature TC = 150 °C, with a total device rating of 40 A when both diodes operate simultaneously under thermal coupling conditions defined by Rth(c) = 0.50 °C/W. Derating is required above 150 °C case temperature per Figure 2 in DS3262.
Is the metal tab electrically isolated from the anodes?
Yes - the metal tab is connected exclusively to the common cathode terminal and is electrically isolated from both anodes. It must be mounted to a heatsink using insulating hardware (e.g., mica washer + thermal grease) unless the system design permits direct electrical connection to ground or common return.
Can STPS40150CT replace a single-diode TO-220 Schottky in existing designs?
No - STPS40150CT contains two independent Schottky diodes sharing one cathode; it cannot substitute a single-diode part without circuit redesign. Its dual-anode configuration requires matching layout changes to route two separate anode inputs while sharing the cathode tab, typically used in dual-output or interleaved converters.
What is the recommended torque for mounting the TO-220AB package?
The manufacturer specifies a recommended torque of 0.55 N·m and a maximum torque of 0.70 N·m for the mounting screw. Exceeding 0.70 N·m risks cracking the epoxy body or damaging internal wire bonds, while insufficient torque degrades thermal transfer and raises junction temperature beyond rated limits.
STPS40150CT 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):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 8 µA @ 150 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
STPS40150CT FAQ
1.How can I place an order for STPS40150CT through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS40150CT 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 STPS40150CT reliable?
The price and inventory of STPS40150CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS40150CT is usually 5 days.
3.What payment methods are accepted for STPS40150CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS40150CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS40150CT?
STPS40150CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS40150CT 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 STPS40150CT?
For technical support, including STPS40150CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS40150CT requirements.
6.How does Aetrix verify that STPS40150CT is sourced from the original manufacturer or authorized distributors?
All STPS40150CT 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 STPS40150CT meets industry standards.
7.What is the process for return or replacement of STPS40150CT?
All STPS40150CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS40150CT, 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 STPS40150CT part is unused and in its original packaging.
Return procedure for STPS40150CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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