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STMicroelectronics STPS60170CT
- Part No.:
- STPS60170CT
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
STPS60170CT.pdf
- Description:
- DIODE ARR SCHOTT 170V 30A TO-220
- Quantity:
- Payment:
- Shipping:
Inventory:5,922
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Product details
Overview
STPS60170CT from STMicroelectronics is a dual high-voltage Schottky rectifier in TO-220AB package, rated for 170 V repetitive peak reverse voltage and 2 × 30 A average forward current per diode, with typical forward voltage drop of 0.76 V at 125 °C and 30 A - optimized for high-frequency switched-mode power supplies in industrial AC/DC adapters and server PSUs.
For engineers reviewing the STPS60170CT datasheet, STPS60170CT pinout, STPS60170CT application, or STPS60170CT equivalent, key selection criteria include junction-to-case thermal resistance (1.0 °C/W per diode), avalanche power rating (985 W), low leakage (<35 µA at 25 °C), ECOPACK®2 compliance, and dual-diode configuration enabling interleaved or parallel rectification topologies.
Technical Context
This device integrates two independent Schottky diodes in a single TO-220AB thermally enhanced package, sharing a common cathode configuration confirmed by pinout and internal schematic. Its 175 °C maximum junction temperature and low Rth(j-c) support high-power density designs without forced air cooling.
The diode pair exhibits specified avalanche capability (985 W, 10 µs pulse) and low thermal resistance coupling (0.4 °C/W), enabling simultaneous conduction with predictable thermal interaction - critical for synchronous rectification and redundant power path applications where thermal crosstalk must be modeled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - supports input rectification up to 120 VAC full-wave or 240 VAC bridge with margin |
| IF(AV) | 2 × 30 A - enables 60 A total DC output capability using dual-diode parallel operation |
| VF (typ.) | 0.76 V @ 30 A, 125 °C - reduces conduction loss to ~22.8 W per diode at rated current |
| Rth(j-c) | 1.0 °C/W per diode - allows ≥45 W dissipation per diode with 45 °C case rise above ambient |
| IR (max) | 35 µA @ 25 °C, VRRM - ensures minimal standby power loss in offline SMPS standby circuits |
| Tj(max) | 175 °C - permits operation in sealed enclosures or high-ambient industrial environments |
| PARM | 985 W - provides robust transient overvoltage clamping during MOSFET turn-off in flyback or LLC converters |
Pinout & Package
TO-220AB package with isolated mounting tab (non-electrical), 3-terminal configuration: Pin 1 = Anode 1, Pin 2 = Cathode (common), Pin 3 = Anode 2. Mounting torque: 0.55 N·m (recommended), max 0.7 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Connects to AC input node (e.g., transformer secondary leg 1) in center-tapped or dual-winding rectifiers |
| Pin 2 | Common Cathode | Output node for DC bus; electrically tied to heatsink via isolated tab - requires insulating washer |
| Pin 3 | Anode of Diode 2 | Connects to second AC input node (e.g., transformer secondary leg 2) for dual-phase or push-pull rectification |
Key Features
| Feature | Design Value |
|---|---|
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy meets UL 94 V0 - satisfies industrial and telecom environmental mandates |
| Avalanche-rated capability | 985 W repetitive peak avalanche power (10 µs, Tj = 125 °C) - eliminates need for external snubbers in flyback clamp circuits |
| Low thermal resistance coupling | 0.4 °C/W inter-diode coupling - enables accurate thermal modeling when both diodes conduct simultaneously |
| High junction temperature rating | 175 °C max operating junction temperature - supports derated operation in 85–105 °C ambient server PSU environments |
| Optimized VF/IR trade-off | 0.76 V VF @ 125 °C / 30 A and <35 µA IR @ 25 °C - balances efficiency and leakage in high-frequency 100–500 kHz SMPS |
Applications
| Server Power Supply Rectification | Industrial AC/DC Adapter |
|---|---|
Use Scenario: High-efficiency 80 PLUS Titanium PSUs converting 230 VAC to +12 V/54 A output using active clamp forward topology. IC Role / Device Role / Timing Role: Dual common-cathode Schottky rectifier replacing two discrete devices - handles interleaved secondary-side conduction with shared thermal path. Use Value: Reduces component count and PCB area vs. dual TO-220 parts; 0.76 V VF cuts conduction loss by 1.8 W per diode vs. legacy 0.85 V parts at 30 A. | Use Scenario: 300 W industrial AC/DC adapter powering PLC I/O modules in factory automation cabinets with 70 °C ambient. IC Role / Device Role / Timing Role: Output rectifier in asymmetrical half-bridge converter - conducts during positive half-cycle of transformer secondary voltage. Use Value: 175 °C Tj(max) and 1.0 °C/W Rth(j-c) enable stable 30 A operation without heatsink derating at elevated ambient. |
| Telecom Rectifier Module | Renewable Energy Inverter Auxiliary Supply |
Use Scenario: -48 V telecom rectifier module accepting 200–240 VAC input, delivering 60 A at 54 V with forced-air cooling. IC Role / Device Role / Timing Role: Dual-anode, common-cathode configuration used in center-tapped transformer secondary rectification - each anode handles 30 A half-cycle conduction. Use Value: Low 35 µA IR at 25 °C minimizes no-load power draw; avalanche rating absorbs reflected energy during MOSFET switching transitions. | Use Scenario: Auxiliary 24 V supply in solar string inverters, powered from HV DC link via flyback converter operating at 250 kHz. IC Role / Device Role / Timing Role: Secondary-side rectifier - conducts during transformer reset phase; operates at high frequency with low capacitive charge. Use Value: High-frequency operation capability (no specified limit, but characterized to 500 kHz) ensures minimal switching loss; low Cj (typ. 200 pF @ 40 V) reduces EMI generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage dual Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-60CPH17 | Same 170 V VRRM, 60 A total IF(AV), but TO-247 package; Rth(j-c) = 0.75 °C/W (lower), VF = 0.82 V @ 30 A, 125 °C (higher) | Requires larger PCB footprint and different heatsink interface; better thermal performance but higher conduction loss | Prefer when thermal budget is tighter than voltage drop budget; verify TO-247 mounting compatibility |
| ON Semiconductor MBR60170CT | Identical ratings (170 V, 2×30 A), TO-220AB package, but VF = 0.85 V @ 30 A, 125 °C; no specified avalanche rating | No avalanche capability limits use in flyback/clamp topologies; same mechanical fit but lower efficiency | Select only for non-avalanche-sensitive applications like forward converters; confirm thermal design with higher VF |
Compared with VS-60CPH17 and MBR60170CT, STPS60170CT uniquely combines TO-220AB form factor, 0.76 V low forward drop, and 985 W avalanche rating - making it optimal for space-constrained, high-reliability SMPS where both thermal density and transient robustness matter.
Availability
STPS60170CT is available at Aetrix Electronics and suitable for industrial AC/DC adapters, telecom rectifier modules, and server power supplies requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.
Supply support for STPS60170CT 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
The STPS series targets high-efficiency power conversion, with STPS60170CT specifically engineered for high-voltage, high-current Schottky rectification in compact, thermally demanding SMPS applications.
FAQ
Is STPS60170CT suitable for synchronous rectification?
No - STPS60170CT is a passive Schottky rectifier, not a synchronous rectifier IC. It lacks gate drive control logic, MOSFET integration, or timing circuitry. It functions as a diode-only replacement in secondary-side rectification, where external PWM control is handled by a separate controller IC driving active switches.
What is the maximum continuous power dissipation per diode at 100 °C case temperature?
Using Rth(j-c) = 1.0 °C/W and Tj(max) = 175 °C, the allowable ΔTj-c is 75 °C. Thus, max continuous power per diode is 75 °C ÷ 1.0 °C/W = 75 W. However, electrical limits constrain IF(AV) to 30 A, limiting practical dissipation to ~22.8 W at 0.76 V VF.
Does the common cathode pin require electrical isolation from the heatsink?
Yes - Pin 2 (common cathode) is electrically connected to the metal tab in TO-220AB. To prevent shorting to grounded heatsinks, an insulating washer and shoulder washer must be used. The datasheet specifies the tab is non-isolated and shares cathode potential.
Can STPS60170CT replace STPS30170CG in the same PCB footprint?
No - STPS30170CG uses TO-247 package (larger, 3-pin straight lead), while STPS60170CT uses TO-220AB (smaller, 3-pin bent lead). Mounting hole pattern, lead spacing, and thermal pad geometry differ. Direct replacement requires PCB redesign and mechanical requalification.
STPS60170CT 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):
- 170 V
- Current - Average Rectified (Io) (per Diode):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 940 mV @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 35 µA @ 170 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
STPS60170CT FAQ
1.How can I place an order for STPS60170CT through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS60170CT 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 STPS60170CT reliable?
The price and inventory of STPS60170CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS60170CT is usually 5 days.
3.What payment methods are accepted for STPS60170CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS60170CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS60170CT?
STPS60170CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS60170CT 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 STPS60170CT?
For technical support, including STPS60170CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS60170CT requirements.
6.How does Aetrix verify that STPS60170CT is sourced from the original manufacturer or authorized distributors?
All STPS60170CT 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 STPS60170CT meets industry standards.
7.What is the process for return or replacement of STPS60170CT?
All STPS60170CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS60170CT, 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 STPS60170CT part is unused and in its original packaging.
Return procedure for STPS60170CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS60170CT Tags
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BAT54S-7-F
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BAV99LT1G
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