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STMicroelectronics STPS10170CT
- Part No.:
- STPS10170CT
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
STPS10170CT.pdf
- Description:
- DIODE ARRAY SCHOT 170V 5A TO-220
- Quantity:
- Payment:
- Shipping:
Inventory:1
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Product details
Overview
STPS10170CT from STMicroelectronics is a dual-center-tab high-voltage Schottky rectifier in D²PAK package, rated for 170 V repetitive peak reverse voltage, 10 A total average forward current (5 A per diode), and 175 °C maximum junction temperature. It delivers low forward voltage drop (0.69 V typ. at 5 A, 125 °C) with low leakage (10 µA at 25 °C, 10 mA at 125 °C), enabling efficient operation in high-frequency SMPS outputs.
For engineers reviewing the STPS10170CT datasheet, STPS10170CT pinout, STPS10170CT application, or STPS10170CT equivalent, key selection criteria include avalanche-rated power (220 W at 10 µs), thermal resistance (4 °C/W junction-to-case per diode), dual-diode configuration with shared cathode tab, and ECOPACK®2 compliance for industrial power conversion designs.
Technical Context
This dual Schottky rectifier integrates two independent anodes and a common cathode terminal, optimized for synchronous rectification and output stage freewheeling in isolated DC-DC converters. Its low VF–IR trade-off enables high efficiency at elevated temperatures while maintaining avalanche robustness under transient overvoltage conditions.
The device operates with specified thermal coupling (0.7 °C/W) between diodes and uses conduction cooling via the exposed cathode tab. Junction-to-case thermal resistance is 4 °C/W per diode (2.4 °C/W total), supporting stable thermal management when mounted on ≥8 cm² copper area in D²PAK footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - Withstands repetitive reverse voltage up to 170 V without breakdown, suitable for 48 V–110 V input SMPS secondary-side rectification. |
| IF(AV) per diode | 5 A - Sustains 5 A average forward current per diode at Tc = 155 °C, enabling 10 A total output capability in dual configuration. |
| VF (typ) | 0.69 V @ 5 A, 125 °C - Low conduction loss reduces heat generation and improves system efficiency in high-duty-cycle applications. |
| IR (max) | 10 mA @ 125 °C, VR = 170 V - Controlled leakage ensures minimal standby power loss and stable bias in high-impedance feedback networks. |
| PARM | 220 W @ tp = 10 µs, Tj = 125 °C - Avalanche energy rating supports reliable operation during output short-circuit or load dump transients. |
| Rth(j-c) per diode | 4 °C/W - Enables accurate thermal modeling when heatsinking via cathode tab; total Rth(j-c) = 2.4 °C/W for both diodes in parallel conduction. |
| Tj(max) | 175 °C - High junction temperature tolerance allows operation in compact, thermally constrained enclosures without derating below full current. |
Pinout & Package
The STPS10170CT is housed in a surface-mount D²PAK (TO-263) package with three terminals: Anode 1, Anode 2, and common Cathode (exposed metal tab). The cathode tab serves as the primary thermal and electrical return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input terminal for first Schottky diode | Connects to transformer secondary winding or switching node; carries up to 5 A average forward current. |
| Anode 2 | Input terminal for second Schottky diode | Independent anode path enabling dual-output or interleaved rectification without cross-conduction risk. |
| Cathode (Tab) | Common output and thermal interface | Electrically ties both diodes' cathodes; must be soldered to ≥8 cm² PCB copper for rated thermal performance (Rth(j-a) ≈ 15 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche energy rating | 220 W peak power at 10 µs pulse - validated for repeated surge events without parameter shift or failure. |
| High-temperature operation | Rated up to 175 °C junction temperature - eliminates need for oversized heatsinks in sealed industrial power supplies. |
| Low VF–IR balance | 0.69 V VF (typ) + 10 mA IR (max @ 125 °C) - achieves >92% efficiency at 12 V/5 A output with minimal thermal runaway risk. |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy and lead-free terminations - meets IEC 61249-2-21 and JEDEC J-STD-020 standards. |
| Dual-diode thermal coupling | 0.7 °C/W coupling resistance - enables accurate shared thermal modeling for simultaneous conduction in redundant or parallel outputs. |
Applications
| Server PSU Output Rectification | Industrial AC-DC Adapter |
|---|---|
Use Scenario: 12 V/20 A output stage of 80 PLUS Titanium server power supply operating at 300 kHz switching frequency. IC Role / Device Role / Timing Role: Dual-center-tab Schottky rectifier providing synchronous freewheeling path with shared cathode return to minimize PCB layout inductance. Use Value: 0.69 V typical VF reduces conduction loss by 1.8 W per diode vs. standard 1N5822, lowering thermal stress on 2-oz copper planes. | Use Scenario: 24 V/10 A open-frame industrial adapter powering PLC I/O modules in ambient temperatures up to 70 °C. IC Role / Device Role / Timing Role: Secondary-side dual-output rectifier delivering isolated 24 V and 5 V rails using center-tapped transformer winding. Use Value: 175 °C Tj(max) and 4 °C/W Rth(j-c) allow full 10 A load without forced air, reducing system BOM cost and noise. |
| Telecom DC-DC Brick | EV Onboard Charger Auxiliary Supply |
Use Scenario: 48 V input telecom brick converting to ±15 V analog supply with tight ripple requirements. IC Role / Device Role / Timing Role: Dual-anode Schottky configured as center-tapped full-wave rectifier for low-noise bipolar output generation. Use Value: 10 µA max IR at 25 °C prevents bias current drift in precision op-amp reference circuits downstream. | Use Scenario: 400 V DC-link auxiliary supply generating 12 V control rail for gate drivers and MCU in EV onboard charger. IC Role / Device Role / Timing Role: High-reliability output rectifier handling 170 V reverse stress during MOSFET turn-off spikes in SiC-based PFC stages. Use Value: 220 W avalanche rating absorbs 10 µs transients up to 1.2 kV without clamping circuitry, simplifying protection design. |
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 |
|---|---|---|---|
| STPS10H170CG | Same D²PAK package, identical VRRM (170 V), but higher IF(AV) = 10 A per diode (20 A total); VF = 0.75 V typ. @ 10 A, 125 °C. | Targeted at higher-current 48 V telecom systems requiring >15 A output; not recommended for space-constrained 12 V server rails due to increased conduction loss density. | Select when total output current exceeds 15 A and thermal margin permits higher VF-induced losses. |
| MBR10150CT | DPAK package (smaller thermal mass), lower VRRM = 150 V, same IF(AV) = 5 A/diode; VF = 0.85 V typ. @ 5 A, 25 °C; no avalanche rating specified. | Suitable for cost-sensitive 24 V industrial adapters where 150 V reverse margin suffices and board space limits D²PAK use. | Choose only if 150 V reverse rating is sufficient and thermal budget allows higher VF loss without heatsink. |
Compared with STPS10H170CG, the STPS10170CT offers tighter thermal control per diode (4 °C/W vs. 3.5 °C/W) and lower leakage, making it preferable for thermally dense 12 V server rails; versus MBR10150CT, its 170 V rating and avalanche robustness provide critical margin in SiC-based EV charger auxiliary supplies.
Availability
STPS10170CT is available at Aetrix Electronics and suitable for server power supplies, industrial AC-DC adapters, telecom DC-DC bricks, and EV onboard charger auxiliary supplies requiring stable component supply and long-term manufacturability.
Supply support for STPS10170CT 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.
The STPS10170CT belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in switched-mode power supplies operating above 100 kHz.
FAQ
What is the correct PCB footprint for STPS10170CT?
The STPS10170CT uses the D²PAK (TO-263) package with standardized footprint dimensions: 8.60–9.35 mm length, 10.00–10.55 mm width, and 15.00–15.85 mm height. The cathode tab requires ≥8 cm² of 2-oz copper for rated thermal performance, per Figure 9 in DocID12541 Rev 4.
Can STPS10170CT replace single-diode Schottkys in existing designs?
Yes, but only when the circuit topology uses a center-tapped transformer or dual-winding configuration. Its dual-anode structure is not interchangeable with single-anode Schottkys like STPS5L60; replacing requires verifying anode routing, thermal pad layout, and shared cathode return path compatibility.
Is STPS10170CT suitable for automotive applications?
No - STPS10170CT is not AEC-Q101 qualified and lacks automotive-grade screening, extended temperature validation, or zero-defect traceability. For automotive 12 V/24 V DC-DC modules, ST recommends the AEC-Q101-qualified STPS10H170CJ in D²PAK.
How does the avalanche rating impact reliability in SMPS designs?
The 220 W avalanche rating (at 10 µs, 125 °C) ensures the device withstands repetitive voltage overshoots during MOSFET turn-off in hard-switched topologies. This eliminates need for external TVS clamps in 48–110 V output stages, improving long-term reliability under transient stress without parameter degradation.
STPS10170CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 170 V
- Current - Average Rectified (Io) (per Diode):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 170 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
STPS10170CT FAQ
1.How can I place an order for STPS10170CT through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS10170CT 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 STPS10170CT reliable?
The price and inventory of STPS10170CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS10170CT is usually 5 days.
3.What payment methods are accepted for STPS10170CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS10170CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS10170CT?
STPS10170CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS10170CT 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 STPS10170CT?
For technical support, including STPS10170CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS10170CT requirements.
6.How does Aetrix verify that STPS10170CT is sourced from the original manufacturer or authorized distributors?
All STPS10170CT 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 STPS10170CT meets industry standards.
7.What is the process for return or replacement of STPS10170CT?
All STPS10170CT units undergo pre-shipment inspection (PSI). If there is an issue with STPS10170CT, 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 STPS10170CT part is unused and in its original packaging.
Return procedure for STPS10170CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS10170CT Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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