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STMicroelectronics STPS20150CT
- Part No.:
- STPS20150CT
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
STPS20150CT.pdf
- Description:
- DIODE ARR SCHOTT 150V 10A TO-220
- Quantity:
- Payment:
- Shipping:
Inventory:1,111
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Product details
Overview
STPS20150CT from STMicroelectronics is a dual center-tap Schottky rectifier in TO-220AB package, rated for 150 V repetitive reverse voltage and 2 × 10 A average forward current per diode at TC = 155 °C, with typical forward voltage drop of 0.69 V at 10 A and 25 °C - designed for high-frequency switch-mode power supplies in industrial AC/DC adapters and server PSUs.
For engineers reviewing the STPS20150CT datasheet, STPS20150CT pinout, STPS20150CT application, or STPS20150CT equivalent, key selection criteria include junction-to-case thermal resistance (2.2 °C/W per diode), avalanche capability (480 W peak), insulated mounting compatibility, and low leakage current (<5.0 µA at 25 °C).
Technical Context
This dual-center-tap Schottky rectifier integrates two independent anode-cathode junctions sharing a common cathode terminal, enabling synchronous rectification in center-tapped transformer topologies. Its silicon carbide–free Schottky architecture delivers fast recovery (no minority carrier storage) and zero reverse recovery charge.
Thermal design relies on direct conduction cooling via the metal tab; Rth(j-c) is 2.2 °C/W per diode for TO-220AB, and maximum junction temperature is rated to +175 °C - supported by specified avalanche energy handling (tp = 10 µs, Tj = 125 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - supports input rectification up to 100 VRMS AC lines with safety margin. |
| IF(AV) per diode | 10 A at TC = 155 °C - defines continuous DC output current capability per leg in center-tap configuration. |
| VF (typ) | 0.69 V at IF = 10 A, Tj = 25 °C - enables <1.4 W conduction loss per diode at 10 A DC. |
| IFSM | 180 A (10 ms sine) - withstands inrush currents during cold-start in high-power SMPS. |
| Rth(j-c) per diode | 2.2 °C/W - determines minimum heatsink requirement for thermal stability under full load. |
| Tj(max) | +175 °C - allows operation in high-ambient environments (e.g., enclosed industrial enclosures). |
| IR (max) | 5.0 µA at 25 °C, 150 V - ensures minimal standby power loss in offline converters. |
Pinout & Package
TO-220AB package with isolated metal tab (non-insulated version); three terminals: Cathode (shared, pin 2), Anode 1 (pin 1), Anode 2 (pin 3). Mounting requires mechanical torque of 0.55 N·m (max 0.7 N·m).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Connects to first winding half of center-tapped transformer; carries forward current during first half-cycle. |
| Pin 2 | Cathode (common) | Shared output node; connects to bulk capacitor positive rail - must handle full 20 A device-level RMS current. |
| Pin 3 | Anode 2 | Connects to second winding half; conducts during second half-cycle - symmetrical with Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| High Tj capability | Rated to +175 °C junction - enables compact thermal design without derating in 85 °C ambient systems. |
| Avalanche-rated | 480 W peak (10 µs pulse, Tj = 125 °C) - protects against inductive switching transients in unclamped topologies. |
| Low VF/IR trade-off | 0.69 V @ 10 A / <5 µA @ 25 °C - balances efficiency and standby loss better than standard Schottky alternatives. |
| ECOPACK®2 compliance | Meets RoHS and halogen-free requirements - qualified for industrial and telecom equipment with strict environmental mandates. |
| Center-tap dual-diode integration | Single-package solution replaces two discrete Schottkys - reduces PCB area and thermal interface count by 50%. |
Applications
| Server Power Supply | Industrial AC/DC Adapter |
|---|---|
|
Use Scenario: Secondary-side rectification in 80 PLUS Titanium-certified 1.5 kW server PSUs using forward or push-pull topology with center-tapped transformer. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing synchronous, low-loss DC output generation with no reverse recovery delay. Use Value: Reduces conduction losses by ~35% versus fast recovery diodes, directly improving full-load efficiency above 96%. |
Use Scenario: Output rectification in ruggedized 48 V/20 A industrial AC/DC power modules operating continuously at 70 °C ambient. IC Role / Device Role / Timing Role: Center-tap Schottky pair delivering high-reliability DC output with guaranteed 175 °C junction rating. Use Value: Eliminates thermal runaway risk under sustained overload due to stable VF temperature coefficient and validated avalanche robustness. |
| Telecom Rectifier Module | Medical Imaging Power System |
|
Use Scenario: -48 V DC output stage in telecom shelf rectifiers where EMI and efficiency are tightly constrained. IC Role / Device Role / Timing Role: Low-noise, zero-Qrr rectifier minimizing high-frequency ringing and conducted emissions. Use Value: Enables compliance with EN 55022 Class B without additional snubbing, reducing BOM cost and layout complexity. |
Use Scenario: High-stability DC bus generation in MRI gradient amplifier power stages requiring ultra-low leakage and thermal predictability. IC Role / Device Role / Timing Role: Precision rectifier with <5 µA max reverse leakage at 125 °C - critical for microvolt-level signal integrity. Use Value: Prevents baseline drift in analog front-end circuits caused by diode leakage-induced offset in multi-kW power conditioning. |
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-20CPQ150PbF | Same VRRM (150 V), higher IF(AV) (2 × 12 A), but Rth(j-c) = 2.5 °C/W - 14% higher thermal resistance. | Requires larger heatsink for same power dissipation; not qualified to ECOPACK®2. | Prefer when higher current headroom is needed and environmental compliance is secondary. |
| ON Semiconductor MBR20150CT | Identical ratings (150 V, 2 × 10 A), but VF = 0.82 V (typ) at 10 A - 19% higher conduction loss. | Limited to lower-efficiency designs; no avalanche rating specified in datasheet. | Select only if STPS20150CT is unavailable and system efficiency >95% is not required. |
Compared with VS-20CPQ150PbF and MBR20150CT, STPS20150CT offers the lowest combined conduction loss and thermal resistance among TO-220AB dual Schottkys, plus verified avalanche capability and ECOPACK®2 compliance - making it optimal for high-density, high-reliability industrial and telecom power designs.
Availability
STPS20150CT is available at Aetrix Electronics and suitable for server power supplies, industrial AC/DC adapters, and telecom rectifier modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for STPS20150CT 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, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
STPS20150CT belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability switch-mode power conversion in demanding thermal and electrical environments.
FAQ
Is STPS20150CT suitable for surface-mount assembly?
No - STPS20150CT uses the through-hole TO-220AB package with a metal tab intended for screw-mount heatsinking. It is not compatible with reflow or wave soldering processes. For SMT alternatives, consider ST's D2PAK variant STPS20150CG (same die, different package).
What is the maximum allowable case temperature for continuous operation?
The maximum case temperature for continuous operation is 155 °C, as defined in the absolute ratings table for IF(AV). Exceeding this temperature requires derating per Figure 2 in DS2252, and thermal design must ensure Rth(j-c) × Ptot + TC ≤ 175 °C.
Does STPS20150CT require a thermal pad or insulator when mounted to a heatsink?
No insulator is required for the standard TO-220AB variant (STPS20150CT), as its metal tab is electrically connected to the cathode. If electrical isolation is needed, use the TO-220FPAB variant (STPS20150CFP), which features 2000 VRMS insulation between tab and cathode.
How is the 20 A device-level rating distributed across the two diodes?
The 20 A "per device" rating in Table 1 refers to total RMS current capability when both diodes conduct alternately (e.g., in center-tap operation). Each diode handles up to 10 A average forward current independently, with shared cathode thermal path - total power dissipation must stay within 2 × (IF(AV)² × Rth(j-c)) limits.
STPS20150CT 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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 150 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
STPS20150CT FAQ
1.How can I place an order for STPS20150CT through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20150CT 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 STPS20150CT reliable?
The price and inventory of STPS20150CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20150CT is usually 5 days.
3.What payment methods are accepted for STPS20150CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20150CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20150CT?
STPS20150CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20150CT 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 STPS20150CT?
For technical support, including STPS20150CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20150CT requirements.
6.How does Aetrix verify that STPS20150CT is sourced from the original manufacturer or authorized distributors?
All STPS20150CT 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 STPS20150CT meets industry standards.
7.What is the process for return or replacement of STPS20150CT?
All STPS20150CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS20150CT, 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 STPS20150CT part is unused and in its original packaging.
Return procedure for STPS20150CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS20150CT Tags
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