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STMicroelectronics STPS10170CB
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- Part No.:
- STPS10170CB
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STPS10170CB.pdf
- Description:
- DIODE ARRAY SCHOTT 170V 5A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:9,436
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Product details
Overview
STPS10170CB from STMicroelectronics is a dual-center-tab high-voltage Schottky rectifier in DPAK package, rated for 170 V repetitive peak reverse voltage, 5 A average forward current per diode (10 A total), and 175 °C maximum junction temperature. It delivers low forward voltage drop (0.69 V typ. at 125 °C, 5 A) with low leakage (≤10 µA at 25 °C, ≤10 mA at 125 °C), enabling efficient operation in high-frequency SMPS output stages.
For engineers reviewing the STPS10170CB datasheet, STPS10170CB pinout, STPS10170CB application, or STPS10170CB equivalent, key selection criteria include thermal resistance (Rth(j-c) = 4 °C/W per diode), avalanche capability (220 W, 10 µs), dual-diode configuration with shared cathode tab, and DPAK mechanical compatibility for board-level thermal management.
Technical Context
This dual Schottky rectifier integrates two independent anodes and a common cathode terminal, optimized for synchronous rectification and OR-ing applications in isolated DC-DC converters. Its low VF/IR trade-off enables reduced conduction loss while maintaining robust reverse blocking up to 170 V.
Thermal design relies on case-to-heatsink conduction via the center tab; junction-to-case resistance is 4 °C/W per diode, and coupling resistance between diodes is 0.7 °C/W. Avalanche energy rating (220 W, 10 µs pulse at Tj = 125 °C) supports transient overvoltage resilience without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - Maximum repetitive reverse voltage each diode withstands without breakdown |
| IF(AV) | 5 A per diode - Continuous average forward current at Tc = 155 °C, defining steady-state power delivery capacity |
| VF (Typ) | 0.69 V at 125 °C, 5 A - Low conduction loss enabling >92% efficiency in 12 V–48 V output rails |
| IR (Max) | 10 mA at 125 °C, VRRM - Controlled leakage ensures minimal standby power loss in offline adapters |
| Tj(max) | 175 °C - Enables operation in high-ambient industrial environments without derating |
| Rth(j-c) | 4 °C/W per diode - Directly determines heatsink sizing when mounted on PCB copper pour |
| PARM | 220 W (10 µs) - Specifies single-pulse avalanche energy handling for surge immunity |
Pinout & Package
The STPS10170CB is housed in a surface-mount DPAK (TO-252) package with three terminals: two anodes (A1, A2) and one common cathode (K) connected to the exposed center thermal tab. The tab is electrically tied to the cathode and must be soldered to a large copper area for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first Schottky diode; connects to transformer secondary or input rail in dual-path designs |
| A2 | Anode 2 | Input terminal for second Schottky diode; enables independent control or parallel current sharing |
| K (Tab) | Common Cathode | Output node shared by both diodes; thermally and electrically coupled to PCB ground plane or output rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual-anode, common-cathode topology | Enables compact dual-output or redundant rectification without discrete cathode routing |
| ECOPACK®2 compliance | Meets RoHS and halogen-free requirements for industrial and consumer end-equipment |
| Avalanche-rated (220 W, 10 µs) | Eliminates need for external TVS in flyback snubberless designs with controlled turn-off transients |
| Low Rth(j-c) = 4 °C/W per diode | Supports >5 A continuous operation with ≤25 °C temperature rise using 25 mm² 2-oz copper |
| High Tj(max) = 175 °C | Permits full-rated current in enclosed power supplies operating up to 85 °C ambient |
Applications
| Server AC-DC Power Supply | Industrial PLC Power Module |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48 V/12 V dual-output LLC resonant converter. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss, fast-recovery rectification for both outputs with shared cathode return path. Use Value: Reduces conduction loss by 35% vs. standard silicon diodes, lowering thermal stress on primary-side MOSFETs and improving overall efficiency to >94%. | Use Scenario: Input OR-ing diode pair in redundant 24 V DC power distribution for programmable logic controllers. IC Role / Device Role / Timing Role: Dual-anode configuration allows independent upstream sourcing while sharing cathode to load bus. Use Value: Minimizes forward voltage mismatch (<0.05 V) between paths, ensuring balanced current sharing and eliminating hot-swapping transients. |
| Telecom DC-DC Brick | Automotive On-Board Charger (OBC) Auxiliary Supply |
Use Scenario: Output rectification in high-density 3.3 V/5 V auxiliary supply of telecom rectifier module. IC Role / Device Role / Timing Role: High-frequency Schottky rectifier operating at 300–500 kHz switching frequency with minimal reverse recovery charge. Use Value: Achieves <0.75 V forward drop at full load, reducing heat generation in space-constrained modules with forced-air cooling. | Use Scenario: Isolated auxiliary supply rectification in 6.6 kW OBC, powering gate drivers and MCU from transformer secondary. IC Role / Device Role / Timing Role: High-reliability Schottky diode rated for 175 °C junction temperature and 170 V reverse standoff. Use Value: Sustains operation during OBC thermal soak tests (105 °C ambient) without derating, meeting AEC-Q101 stress requirements. |
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 |
|---|---|---|---|
| STPS10170CG | D²PAK package (Rth(j-c) = 2.4 °C/W total), higher thermal performance, 1.38 g weight | Better suited for high-power (>15 W per diode) applications requiring lower junction rise | Select when board layout allows larger footprint and thermal mass is prioritized over density |
| MBR10150CT | 150 V VRRM, 10 A total IF(AV), TO-220AC package, no avalanche rating | Limited to lower-input-voltage SMPS; lacks transient surge resilience | Choose only if 170 V margin is unnecessary and through-hole mounting is required |
Compared with STPS10170CG, the STPS10170CB offers tighter board area usage and faster assembly but requires more aggressive copper pour design; versus MBR10150CT, it provides critical 20 V reverse margin and certified avalanche robustness for automotive-grade reliability.
Availability
STPS10170CB is available at Aetrix Electronics and suitable for server AC-DC power supplies, industrial PLC power modules, and telecom DC-DC bricks requiring stable component supply with full production status since December 2015.
Supply support for STPS10170CB 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 systems, with the STPS10170CB specifically engineered for high-frequency, high-reliability Schottky rectification in space- and thermal-constrained SMPS topologies.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STPS10170CB is rated for 155 °C case temperature at full 5 A per diode average forward current. Exceeding this requires proportional current derating per Figure 2 in the datasheet; operation above 155 °C risks accelerated parametric drift and reduced lifetime.
Can the two anodes be used with different input sources simultaneously?
Yes - the device supports independent anode biasing. Each anode operates as a separate Schottky diode with the common cathode, enabling OR-ing, dual-output rectification, or interleaved phase operation without internal coupling beyond thermal interaction (Rth(c) = 0.7 °C/W).
Is the center thermal tab electrically isolated?
No - the exposed center tab is internally connected to the common cathode (K) terminal. It must be routed to the same net as the cathode and cannot be used as a floating thermal pad; isolation requires external insulation or dedicated heatsink mounting hardware.
Does ST provide SPICE models for STPS10170CB?
ST does not publish a verified SPICE model for STPS10170CB. Designers should use the datasheet's static VF/IR curves and thermal parameters for behavioral simulation; dynamic switching behavior requires measurement-based characterization due to package parasitics and dual-diode coupling effects.
STPS10170CB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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:
- Surface Mount
- Supplier Device Package:
- DPAK
STPS10170CB FAQ
1.How can I place an order for STPS10170CB through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS10170CB 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 STPS10170CB reliable?
The price and inventory of STPS10170CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS10170CB is usually 5 days.
3.What payment methods are accepted for STPS10170CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS10170CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS10170CB?
STPS10170CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS10170CB 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 STPS10170CB?
For technical support, including STPS10170CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS10170CB requirements.
6.How does Aetrix verify that STPS10170CB is sourced from the original manufacturer or authorized distributors?
All STPS10170CB 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 STPS10170CB meets industry standards.
7.What is the process for return or replacement of STPS10170CB?
All STPS10170CB units undergo pre-shipment inspection (PSI). If there is an issue with STPS10170CB, 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 STPS10170CB part is unused and in its original packaging.
Return procedure for STPS10170CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS10170CB Tags
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BAV99,215
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BAT54S-7-F
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BAV99LT1G
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MMBD1503-TP
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