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STMicroelectronics STPS20SM80CFP
- Part No.:
- STPS20SM80CFP
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
STPS20SM80CFP.pdf
- Description:
- DIODE ARR SCHOTT 80V TO220AB FP
- Quantity:
- Payment:
- Shipping:
Inventory:2,775
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Product details
Overview
STPS20SM80CFP from STMicroelectronics is a dual-channel 80 V, 2 × 10 A average forward current Schottky rectifier in insulated TO-220FPAB package, optimized for high-frequency SMPS with low VF (0.515 V typ. @ 125 °C, 10 A) and low IR (5 µA max @ 125 °C, 80 V). It delivers high efficiency in notebook adapters, LCD TV power supplies, and game station AC/DC converters.
For engineers reviewing the STPS20SM80CFP datasheet, STPS20SM80CFP pinout, STPS20SM80CFP application, or STPS20SM80CFP equivalent, key selection criteria include avalanche-rated operation (100 V, 16.2 A), thermal resistance (Rth(j-c) = 5.80 °C/W per diode), junction temperature capability up to 175 °C, and insulated package safety (2000 VRMS).
Technical Context
This dual common-cathode Schottky rectifier integrates two independent 80 V, 10 A diodes sharing a thermally isolated case. Its design emphasizes conduction loss minimization via low forward voltage and controlled leakage trade-off across -65 °C to +175 °C operating range.
The TO-220FPAB package provides 2000 VRMS insulation between leads and heatsink-mounting surface, enabling safe use in grounded-chassis applications without additional isolation hardware. Avalanche energy rating (385 W at tp = 10 µs) supports robust transient handling in unregulated or loosely regulated DC-DC stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - Maximum repetitive reverse blocking voltage per diode; defines usable input voltage headroom in buck-derived topologies. |
| IF(AV) | 2 × 10 A - Average forward current per diode at TC = 130 °C; enables 20 A total output in dual-phase or interleaved designs. |
| VF(typ.) | 0.515 V @ 10 A, 125 °C - Low conduction loss critical for >90% efficiency at light-to-mid load in adapter applications. |
| IR(max) | 15 mA @ 125 °C, 80 V - Controlled leakage ensures minimal standby power loss in always-on auxiliary rails. |
| Tj(max) | 175 °C - Enables reliable operation under sustained thermal stress in compact, fanless enclosures. |
| Rth(j-c) | 5.80 °C/W per diode - Thermal resistance determines heatsink sizing; total device Rth(j-c) = 4.65 °C/W when both diodes active. |
| VARM | 100 V @ tp < 1 µs - Avalanche clamping voltage limits voltage overshoot during MOSFET turn-off in flyback snubbers. |
Pinout & Package
STPS20SM80CFP uses the insulated TO-220FPAB package with three terminals: two anodes (A1, A2) and one common cathode (K). The plastic body isolates the metal tab (heatsink interface) from all leads, rated for 2000 VRMS sine-wave isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first Schottky diode channel; connects to primary-side switching node in synchronous rectification. |
| A2 | Anode 2 | Input terminal for second Schottky diode channel; enables dual-output or interleaved secondary-side rectification. |
| K | Common Cathode | Shared output node for both diodes; routes combined DC output to filter capacitor and load. |
Key Features
| Feature | Design Value |
|---|---|
| Insulated TO-220FPAB package | 2000 VRMS isolation eliminates need for insulating washers in chassis-grounded power supplies. |
| Avalanche energy rating | 385 W peak (tp = 10 µs) enables reliable operation in unclamped inductive switching events. |
| High Tj capability | 175 °C maximum junction temperature supports operation in thermally constrained consumer enclosures. |
| Optimized VF/IR trade-off | 0.515 V VF @ 125 °C / 15 mA IR @ 125 °C balances conduction loss and standby dissipation. |
| Low thermal resistance | 5.80 °C/W per diode allows effective heat transfer to external heatsink without derating at 130 °C case temp. |
Applications
| Notebook Adapter Power Supply | LCD TV Secondary Rectification |
|---|---|
Use Scenario: 19 V/4.74 A output stage in ultra-thin laptop AC/DC adapter with <15 mm height constraint. IC Role / Device Role / Timing Role: Dual-channel Schottky rectifier replacing two discrete TO-220AB devices to reduce PCB area and thermal coupling. Use Value: 0.515 V VF at 125 °C lowers conduction loss by ~12% vs. legacy 0.65 V parts, improving full-load efficiency to >91%. | Use Scenario: 12 V/8 A and 5 V/4 A dual-output secondary side in 32-inch LCD TV power board. IC Role / Device Role / Timing Role: Common-cathode dual diode providing independent current paths with shared thermal path to heatsink. Use Value: 175 °C Tj rating avoids thermal shutdown during ambient temperatures up to 70 °C inside sealed TV chassis. |
| Game Station AC/DC Converter | Desktop PC Auxiliary Power Supply |
Use Scenario: 5 VSB rail generation in gaming console power supply requiring low standby leakage and fast transient response. IC Role / Device Role / Timing Role: Standby rectifier operating continuously at light load (<100 mW), leveraging low IR (5 µA @ 125 °C). Use Value: 5 µA max reverse leakage at 125 °C reduces no-load power consumption below 80 mW, meeting Energy Star 7.0 requirements. | Use Scenario: +3.3 V/12 A main rail rectification in ATX-compliant desktop PSU with multi-layer heatsink mounting. IC Role / Device Role / Timing Role: High-current secondary-side rectifier with insulated tab enabling direct mounting to grounded chassis heatsink. Use Value: 2000 VRMS insulation eliminates insulator kit, reducing BOM cost and assembly time by 15 seconds per unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS20SM80CT | Same die, TO-220AB package (non-insulated); Rth(j-c) = 2.30 °C/W per diode; no 2000 VRMS isolation. | Requires insulating washer for chassis-mounted heatsinks; unsuitable for Class I safety-critical adapters. | Select when mechanical space allows non-insulated mounting and isolation is handled externally. |
| Vishay VS-20CPH08-M3 | Single-diode 80 V/20 A device in TO-247AC; VF = 0.62 V @ 10 A, 125 °C; no avalanche rating specified. | Lacks dual-anode topology; requires two devices for same functionality; higher VF increases conduction loss. | Choose only if higher single-device current rating is required and dual-channel integration is not needed. |
Compared with STPS20SM80CT, the CFP variant adds insulation and trades 3.5 °C/W higher per-diode thermal resistance for safety compliance; versus VS-20CPH08-M3, it offers integrated dual-channel operation and guaranteed avalanche ruggedness at lower VF, but with lower per-pin current density.
Availability
STPS20SM80CFP is available at Aetrix Electronics and suitable for notebook adapters, LCD TV power supplies, and game station AC/DC converters requiring stable component supply and certified insulation performance.
Supply support for STPS20SM80CFP 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 automotive, industrial, and consumer markets.
The STPS series targets high-efficiency AC/DC and DC/DC power conversion, with the SM80 family specifically engineered for low-VF, high-Tj Schottky rectification in space-constrained consumer power supplies.
FAQ
What is the maximum continuous case temperature for STPS20SM80CFP in TO-220FPAB package?
The maximum continuous case temperature is 130 °C per diode, as defined in Table 2 of the datasheet. At this temperature, each diode sustains 10 A average forward current. Exceeding 130 °C requires derating per Figure 3, and junction temperature must remain ≤175 °C under all operating conditions.
Does STPS20SM80CFP support synchronous rectification control?
No - STPS20SM80CFP is a passive Schottky rectifier with no gate or control terminals. It operates as a self-commutated device and cannot be actively switched like a MOSFET-based synchronous rectifier. Its role is fixed conduction during positive half-cycles of secondary winding voltage.
How is avalanche capability validated for STPS20SM80CFP?
Avalanche capability is validated per ST application notes AN1768 and AN2025, using 10 µs pulses at Tj = 125 °C. The device is rated for 385 W peak avalanche power and 100 V maximum repetitive peak avalanche voltage (VARM) with IAR < 16.2 A, as confirmed in Table 2 and Figure 10.
Can STPS20SM80CFP replace STPS20SM80CT in existing designs?
Yes, with mechanical and thermal verification: the TO-220FPAB footprint differs slightly (see Table 6), and Rth(j-c) is higher (5.80 vs. 2.30 °C/W per diode), requiring heatsink re-evaluation. Electrical characteristics are identical; insulation enables direct chassis mounting without washers.
STPS20SM80CFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 780 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 25 µA @ 80 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB Full-Pak
STPS20SM80CFP FAQ
1.How can I place an order for STPS20SM80CFP through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20SM80CFP 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 STPS20SM80CFP reliable?
The price and inventory of STPS20SM80CFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20SM80CFP is usually 5 days.
3.What payment methods are accepted for STPS20SM80CFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20SM80CFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20SM80CFP?
STPS20SM80CFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20SM80CFP 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 STPS20SM80CFP?
For technical support, including STPS20SM80CFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20SM80CFP requirements.
6.How does Aetrix verify that STPS20SM80CFP is sourced from the original manufacturer or authorized distributors?
All STPS20SM80CFP 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 STPS20SM80CFP meets industry standards.
7.What is the process for return or replacement of STPS20SM80CFP?
All STPS20SM80CFP units undergo pre-shipment inspection (PSI). If there is an issue with STPS20SM80CFP, 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 STPS20SM80CFP part is unused and in its original packaging.
Return procedure for STPS20SM80CFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS20SM80CFP Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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