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STMicroelectronics STPS30170CW
- Part No.:
- STPS30170CW
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
STPS30170CW.pdf
- Description:
- DIODE ARR SCHOTT 170V 15A TO2473
- Quantity:
- Payment:
- Shipping:
Inventory:580
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Product details
Overview
STPS30170CW from STMicroelectronics is a dual-center-tap high-voltage Schottky rectifier in TO-247 package, rated for 170 V reverse voltage, 30 A total average forward current (15 A per diode), and 175 °C maximum junction temperature. It delivers low forward voltage drop (0.69 V typ. at 15 A, 125 °C) with low leakage current (20 µA at 25 °C, 170 V), enabling high-efficiency secondary-side rectification in high-frequency SMPS for telecom and industrial power supplies.
For engineers reviewing the STPS30170CW datasheet, STPS30170CW pinout, STPS30170CW application, or STPS30170CW equivalent, key selection criteria include avalanche-rated surge capability (220 A IFSM), thermal resistance (0.9 °C/W junction-to-case), dual-diode center-tap configuration, and ECOPACK®2 compliance - all critical for reliable high-power, high-temperature rectifier design.
Technical Context
This dual-center-tap Schottky rectifier integrates two independent anode-cathode diodes sharing a common cathode terminal (K), enabling synchronous or center-tapped transformer configurations. Its silicon Schottky architecture eliminates minority-carrier storage delay, supporting switching frequencies beyond 500 kHz without reverse recovery losses.
Thermal design is enabled by low Rth(j-c) of 0.9 °C/W (TO-247), validated under simultaneous conduction of both diodes using coupling resistance (Rth(c) = 0.3 °C/W). Avalanche energy rating (750 W, 10 µs pulse at 125 °C) provides transient overvoltage robustness without external snubbers in flyback or forward converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - Withstands repetitive reverse voltage up to 170 V, suitable for 48 V–60 V output SMPS with 3× safety margin. |
| IF(AV) per diode | 15 A - Supports continuous 15 A DC current per diode at TC = 150 °C, enabling 30 A total device output. |
| VF (typ) | 0.69 V at 15 A, 125 °C - Reduces conduction loss to ~10.4 W per diode, improving efficiency vs. Si PN rectifiers. |
| IR (max) | 20 µA at 25 °C, VR = 170 V - Minimizes standby power loss in no-load or light-load conditions. |
| Rth(j-c) | 0.9 °C/W (total device) - Enables direct heatsink mounting with <1°C/W thermal path for stable 175 °C operation. |
| IFSM | 220 A (10 ms sinusoidal) - Handles startup surges and short-circuit transients without failure. |
| Tj (max) | +175 °C - Allows operation in high-ambient environments (e.g., enclosed industrial enclosures) without derating. |
Pinout & Package
STPS30170CW uses the TO-247 package with three terminals: two anodes (A1, A2) and one shared cathode (K). The package features isolated metal tab for direct heatsink attachment and mechanical torque specification of 0.55 N·m (recommended).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first diode leg; connects to transformer winding end 1 in center-tapped topology. |
| A2 | Anode 2 | Input terminal for second diode leg; connects to transformer winding end 2 in center-tapped topology. |
| K | Common Cathode | Single output node for both diodes; routes combined DC output to filter capacitor and load. |
Key Features
| Feature | Design Value |
|---|---|
| High junction temperature capability | Rated for continuous operation up to +175 °C junction temperature, reducing need for oversized heatsinks in compact designs. |
| Low VF / IR trade-off | 0.69 V VF (15 A, 125 °C) with only 20 µA IR (25 °C) - balances efficiency and leakage better than standard Schottkys. |
| Avalanche capability | 750 W repetitive peak avalanche power (10 µs, Tj = 125 °C) - sustains voltage spikes during switching transitions without clamping circuits. |
| ECOPACK®2 compliance | Meets RoHS and halogen-free requirements with UL 94 V0 epoxy - supports environmental certification for industrial and telecom equipment. |
Applications
| Telecom AC-DC Power Supplies | Industrial SMPS Rectification |
|---|---|
Use Scenario: Secondary-side rectification in 48 V/30 A telecom rectifiers operating at 200–500 kHz. IC Role / Device Role / Timing Role: Dual-center-tap Schottky rectifier replacing two discrete diodes to reduce layout area and parasitic inductance. Use Value: 0.69 V VF minimizes conduction loss (≤10.4 W/diode), enabling >92% efficiency at full load while maintaining <100 °C case temperature. | Use Scenario: Output rectification in 24–48 V industrial switch-mode power supplies with wide ambient range (−40 to +85 °C). IC Role / Device Role / Timing Role: High-reliability rectifier with 175 °C Tj rating and avalanche ruggedness for unregulated line transients. Use Value: 220 A IFSM and 750 W avalanche rating eliminate need for external TVS protection in DIN-rail mounted PSUs. |
| Server PSU Secondary Side | EV Charging Auxiliary Power |
Use Scenario: +12 V and +5 V rail rectification in redundant server PSUs requiring high power density and low EMI. IC Role / Device Role / Timing Role: Center-tapped Schottky enabling interleaved or phase-shifted control with minimal reverse recovery noise. Use Value: Zero reverse recovery charge (Qrr ≈ 0) eliminates switching node ringing, simplifying EMI filter design and reducing snubber losses. | Use Scenario: Isolated auxiliary supply rectification in on-board chargers (OBC) for 400 V battery systems. IC Role / Device Role / Timing Role: High-VRRM (170 V) Schottky handling reflected transients from primary-side MOSFET switching. Use Value: 170 V VRRM with 3× margin over 48 V nominal output ensures long-term reliability under ISO 7637-2 pulse 5a/b conditions. |
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 |
|---|---|---|---|
| STPS30H100CW | 100 V VRRM, same TO-247 package and 30 A rating; lower VF (0.62 V typ.) but reduced voltage margin. | Suitable for ≤24 V output systems; not recommended for 48 V telecom where 170 V margin is required. | Select when output voltage is ≤36 V and lowest conduction loss is prioritized over transient robustness. |
| VS-30CPH07-M3 | 170 V VRRM, TO-247, but single-diode configuration (no center tap); VF = 0.72 V (15 A, 125 °C). | Requires two devices for center-tapped topology, increasing PCB area and thermal management complexity. | Choose only if layout allows separate anode routing and thermal isolation between diodes is preferred. |
Compared with STPS30H100CW and VS-30CPH07-M3, STPS30170CW uniquely combines 170 V rating, integrated dual-center-tap topology, and 0.69 V VF - delivering optimal balance of voltage margin, layout simplicity, and thermal performance in 48 V high-current SMPS.
Availability
STPS30170CW is available at Aetrix Electronics and suitable for telecom AC-DC power supplies, industrial SMPS rectification, and EV charging auxiliary power requiring stable component supply and long-lifecycle support.
Supply support for STPS30170CW 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The STPS series targets high-efficiency power conversion, with STPS30170CW specifically engineered for high-current, high-frequency secondary-side rectification in space-constrained, thermally demanding applications.
FAQ
What is the thermal resistance junction-to-case for STPS30170CW?
The junction-to-case thermal resistance (Rth(j-c)) for STPS30170CW in TO-247 package is 0.9 °C/W for the total device under simultaneous conduction of both diodes. This value accounts for internal coupling resistance (Rth(c) = 0.3 °C/W) and is measured with the tab directly mounted to a heatsink. It enables accurate thermal modeling for designs targeting ≤175 °C junction temperature.
Does STPS30170CW support center-tapped transformer topologies?
Yes - STPS30170CW integrates two independent Schottky diodes with a shared cathode (K) and separate anodes (A1, A2), forming a true dual-center-tap configuration. This allows direct connection to opposite ends of a center-tapped transformer secondary winding, eliminating the need for external diode pairing and reducing PCB parasitics in forward and push-pull converters.
How does the avalanche rating impact real-world reliability?
The STPS30170CW is specified for 750 W repetitive peak avalanche power at 10 µs pulse width and 125 °C junction temperature. This rating ensures the device can absorb transient overvoltages - such as those caused by transformer leakage inductance or MOSFET turn-off - without degradation, reducing or eliminating the need for external RC snubbers in flyback and forward converter designs.
Is STPS30170CW RoHS and halogen-free compliant?
Yes - STPS30170CW is ECOPACK®2 compliant, meeting RoHS Directive 2011/65/EU and EU REACH Regulation (SVHC-free), with halogen-free epoxy encapsulation certified to UL 94 V0 flammability rating. Full compliance documentation, including material declarations and test reports, is available through ST's official product page and authorized distributors.
STPS30170CW 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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 20 µA @ 170 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247-3
STPS30170CW FAQ
1.How can I place an order for STPS30170CW through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS30170CW 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 STPS30170CW reliable?
The price and inventory of STPS30170CW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS30170CW is usually 5 days.
3.What payment methods are accepted for STPS30170CW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS30170CW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS30170CW?
STPS30170CW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS30170CW 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 STPS30170CW?
For technical support, including STPS30170CW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS30170CW requirements.
6.How does Aetrix verify that STPS30170CW is sourced from the original manufacturer or authorized distributors?
All STPS30170CW 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 STPS30170CW meets industry standards.
7.What is the process for return or replacement of STPS30170CW?
All STPS30170CW units undergo pre-shipment inspection (PSI). If there is an issue with STPS30170CW, 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 STPS30170CW part is unused and in its original packaging.
Return procedure for STPS30170CW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS30170CW Tags
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