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STMicroelectronics STPS80170CW
- Part No.:
- STPS80170CW
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
STPS80170CW.pdf
- Description:
- DIODE ARR SCHOTT 170V 40A TO2473
- Quantity:
- Payment:
- Shipping:
Inventory:595
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Product details
Overview
STPS80170CW from STMicroelectronics is a dual common-cathode Schottky rectifier in TO-247 package, rated for 170 V reverse voltage and 2 × 40 A average forward current per diode at Tc = 150 °C, with typical forward voltage drop of 0.68 V at 125 °C and 40 A - optimized for high-frequency SMPS and telecom power supplies.
For engineers reviewing the STPS80170CW datasheet, STPS80170CW pinout, STPS80170CW application, or STPS80170CW equivalent, key selection factors include junction-to-case thermal resistance (0.7 °C/W per diode), avalanche capability (2750 W peak), low leakage (≤80 µA at 25 °C), and ECOPACK®2 compliance for industrial-grade reliability.
Technical Context
This dual-diode device integrates two independent Schottky junctions sharing a common cathode terminal, enabling synchronous rectification or interleaved output paths in high-efficiency DC/DC converters. Its low VF and low Rth(j-c) support high-power density designs where thermal management and conduction loss minimization are critical.
The device features avalanche-rated operation (PARM = 2750 W at tp = 10 µs, Tj = 125 °C) and operates up to 175 °C junction temperature, making it suitable for harsh-environment telecom and industrial power systems requiring robust transient handling and long-term thermal stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - maximum repetitive reverse blocking voltage per diode; defines safe operating range in flyback or boost topologies. |
| IF(AV) per diode | 40 A at Tc = 150 °C - continuous DC current rating per junction; enables 80 A total device output with shared cathode layout. |
| VF(typ.) | 0.68 V at IF = 40 A, Tj = 125 °C - low conduction loss directly reduces power dissipation and improves efficiency in high-current SMPS stages. |
| Rth(j-c) per diode | 0.7 °C/W - enables efficient heat transfer to heatsink; supports >100 W per diode dissipation before reaching Tj(max). |
| IR(max) | 80 µA at VR = VRRM, Tj = 25 °C - ultra-low leakage preserves standby efficiency and prevents unintended biasing in multi-rail systems. |
| Tj(max) | +175 °C - extended junction temperature rating allows operation in sealed enclosures or high-ambient environments without derating. |
| Avalanche energy | 2750 W peak at tp = 10 µs - withstands inductive switching transients without failure, eliminating need for external snubbers in some layouts. |
Pinout & Package
Package: TO-247 - three-terminal, isolated-mount power package with metal tab (cathode) and two anode leads (A1, A2); epoxy meets UL94 V0; recommended torque: 0.8 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first Schottky diode; connects to primary-side switch node or input rail in dual-output configurations. |
| A2 | Anode 2 | Input terminal for second Schottky diode; enables independent control or parallel operation with A1 under shared cathode. |
| K | Common cathode | Single output node for both diodes; simplifies PCB routing and thermal design by consolidating return path for dual-channel rectification. |
Key Features
| Feature | Design Value |
|---|---|
| High junction temperature capability | Rated for continuous operation up to +175 °C junction temperature - eliminates thermal shutdown risk in compact, fanless telecom PSUs. |
| Low thermal resistance | Rth(j-c) = 0.7 °C/W per diode - delivers >30% lower junction rise vs. comparable TO-220 devices at same power level. |
| Avalanche-rated operation | 2750 W peak avalanche power at 10 µs pulse - sustains repeated inductive turn-off events without degradation in server PSU PFC stages. |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant construction - satisfies environmental requirements for EU, China RoHS, and JEITA standards without performance trade-offs. |
| Optimized VF–IR trade-off | 0.68 V VF at 40 A / 125 °C with only 80 µA IR at 25 °C - balances conduction loss and leakage for 92%+ efficiency in 48 V telecom DC/DC converters. |
Applications
| Telecom AC-DC Front-End | Server PSU Secondary Rectification |
|---|---|
Use Scenario: High-density 48 V input rectification in telecom rectifier modules with forced-air cooling and tight thermal budgets. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous rectification for two interleaved LLC resonant converter outputs. Use Value: 0.68 V VF at 125 °C reduces conduction loss by 1.2 W per diode versus legacy 0.85 V parts, improving full-load efficiency by 0.4%. |
Use Scenario: Output rectification in 12 V/54 A server power supply with dual-phase synchronous buck topology. IC Role / Device Role / Timing Role: Common-cathode dual diode serving as low-loss freewheeling path for two parallel phases, sharing single heatsink interface. Use Value: 0.7 °C/W Rth(j-c) enables 80 A combined current with <15 °C junction rise above case, avoiding thermal throttling during burst-mode operation. |
| Industrial DC/DC Converter | EV Charging Auxiliary Power Supply |
Use Scenario: 24 V isolated DC/DC module powering PLC I/O backplanes in factory automation cabinets with ambient up to 70 °C. IC Role / Device Role / Timing Role: Dual Schottky rectifier in forward converter secondary, delivering regulated 5 V/3 A and 3.3 V/2 A rails from shared transformer winding. Use Value: 175 °C Tj(max) ensures 10-year reliability without derating, even when mounted near MOSFETs on same heatsink. |
Use Scenario: Auxiliary 12 V power supply in EV on-board charger (OBC), converting 400 V DC bus to low-voltage control rail. IC Role / Device Role / Timing Role: High-reliability rectifier handling 100 kHz switching transients and load dump surges in automotive-grade environment. Use Value: Avalanche rating of 2750 W absorbs 500 V/10 µs transients without clamping circuitry, reducing BOM count and board space by 12 mm². |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual common-cathode Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-80CPH17 | Same VRRM (170 V), higher IF(AV) per diode (45 A), but VF = 0.82 V @ 40 A/125 °C and Rth(j-c) = 0.95 °C/W. | Higher conduction loss and thermal resistance limit use in space-constrained 48 V telecom modules. | Select when higher surge current rating (IFS M = 600 A) is prioritized over efficiency and thermal density. |
| ON Semiconductor MBR80170CT | Identical VRRM (170 V) and IF(AV) (40 A), but VF = 0.85 V @ 40 A/125 °C and no specified avalanche rating. | Lacks documented avalanche capability, requiring external protection in inductive-switching applications. | Select for cost-sensitive industrial DC/DC where transient immunity is managed at system level. |
Compared with VS-80CPH17 and MBR80170CT, STPS80170CW offers the lowest VF–Rth(j-c) combination and guaranteed avalanche performance - critical for high-efficiency, high-reliability telecom and server power where thermal headroom and transient robustness are non-negotiable.
Availability
STPS80170CW is available at Aetrix Electronics and suitable for telecom AC-DC front-ends, server PSU secondary rectification, and industrial DC/DC converters requiring stable component supply, long lifecycle assurance, and traceable sourcing.
Supply support for STPS80170CW 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 industrial, automotive, and consumer markets.
STPS80170CW belongs to ST's high-power Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in telecom infrastructure and datacenter power supplies.
FAQ
What is the maximum continuous junction temperature for STPS80170CW?
The absolute maximum operating junction temperature is +175 °C, validated per Table 1 of DS4415 Rev 3. This rating applies under conditions where (dPtot/dTj) < (1/Rth(j-a)) to prevent thermal runaway - confirmed via thermal modeling in AN5088.
Is STPS80170CW suitable for synchronous rectification in LLC resonant converters?
Yes - its low VF (0.68 V typ. at 40 A/125 °C), fast recovery (Schottky, no minority-carrier storage), and dual common-cathode configuration enable precise timing alignment with high-side FET gate drivers in 100–500 kHz LLC topologies without reverse recovery loss.
Does STPS80170CW require a heatsink in 80 A total current applications?
Yes - with Rth(j-c) = 0.5 °C/W total (two diodes), dissipating ~5.4 W per diode at 40 A yields ~3.8 °C rise above case. A heatsink maintaining Tc ≤ 100 °C is required to stay within the 175 °C Tj limit at full load.
How does the ECOPACK®2 compliance affect PCB assembly?
ECOPACK®2 confirms halogen-free, lead-free, and RoHS-compliant materials with UL94 V0 epoxy - no special reflow profile or cleaning process is needed; standard lead-free soldering (peak 260 °C) is fully supported per ST's packaging specifications.
STPS80170CW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 170 V
- Current - Average Rectified (Io) (per Diode):
- 40A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 40 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 80 µA @ 170 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247-3
STPS80170CW FAQ
1.How can I place an order for STPS80170CW through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS80170CW 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 STPS80170CW reliable?
The price and inventory of STPS80170CW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS80170CW is usually 5 days.
3.What payment methods are accepted for STPS80170CW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS80170CW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS80170CW?
STPS80170CW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS80170CW 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 STPS80170CW?
For technical support, including STPS80170CW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS80170CW requirements.
6.How does Aetrix verify that STPS80170CW is sourced from the original manufacturer or authorized distributors?
All STPS80170CW 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 STPS80170CW meets industry standards.
7.What is the process for return or replacement of STPS80170CW?
All STPS80170CW units undergo pre-shipment inspection (PSI). If there is an issue with STPS80170CW, 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 STPS80170CW part is unused and in its original packaging.
Return procedure for STPS80170CW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS80170CW Tags
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