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STMicroelectronics STPS40170CG-TR
- Part No.:
- STPS40170CG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STPS40170CG-TR.pdf
- Description:
- DIODE ARRAY SCHOT 170V 20A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:8,643
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Product details
Overview
STPS40170CG-TR from STMicroelectronics is a dual-center-tab Schottky rectifier in D²PAK package, rated for 170 V repetitive peak reverse voltage and 2 × 20 A average forward current per diode at Tc = 150 °C, with typical forward voltage drop of 0.69 V at 125 °C and 20 A - optimized for high-frequency SMPS and telecom DC/DC converters.
For engineers reviewing the STPS40170CG-TR datasheet, STPS40170CG-TR pinout, STPS40170CG-TR application, or STPS40170CG-TR equivalent, key selection criteria include thermal resistance (Rth(j-c) = 0.85 °C/W total), avalanche power rating (1015 W at 10 µs), junction temperature capability (175 °C), and low leakage (<30 mA at 125 °C, VR = VRRM).
Technical Context
This dual-diode Schottky rectifier integrates two independent anode-cathode junctions sharing a common center tab (cathode-connected configuration confirmed by D²PAK pinout and ST's "dual center tab" description), enabling synchronous or interleaved operation in high-efficiency power stages. Its low VF and low Rth(j-c) support high-current conduction with minimal thermal penalty.
The device operates with avalanche-rated capability (PARM = 1015 W, tp = 10 µs), enabling robust transient handling without external snubbers in flyback or LLC resonant topologies. Junction-to-case thermal resistance is split across diodes (1.20 °C/W per diode) and coupling path (0.50 °C/W), requiring derating when both diodes conduct simultaneously.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - supports input rectification up to 120 VAC full-wave or 48 VDC telecom bus with margin. |
| IF(AV) per diode | 20 A at Tc = 150 °C - enables 40 A total average output current in dual-phase configurations. |
| VF (typ.) | 0.69 V at 20 A, 125 °C - reduces conduction loss to ~13.8 W per diode under nominal load. |
| Rth(j-c) total | 0.85 °C/W - allows >50 W dissipation with 43 °C ΔT from junction to case, critical for compact heatsink designs. |
| IR @ 125 °C | ≤30 mA at VR = VRRM - limits standby power loss in offline adapters operating at elevated ambient. |
| Tj max | 175 °C - permits operation in sealed telecom enclosures or industrial environments without forced air. |
| PARM | 1015 W (tp = 10 µs) - withstands MOSFET turn-off spikes in hard-switched converters without failure. |
Pinout & Package
Package: D²PAK (TO-263AB), surface-mount, single-side heat transfer via exposed cathode tab. Dimensions per DS4412 Rev 2: D = 8.60–9.35 mm, E = 10.00–10.55 mm, L = 1.90–2.79 mm, with 3-pin layout (Pin 1: Anode 1, Pin 2: Cathode / Tab, Pin 3: Anode 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Connects to high-side switching node (e.g., transformer secondary or buck switch node); isolated from tab. |
| Pin 2 (Tab) | Common Cathode | Thermally and electrically connected to PCB copper pour; serves as return path for both diodes and primary heatsink interface. |
| Pin 3 | Anode of Diode 2 | Independent anode terminal enabling dual-output or phase-split rectification without shared anode routing. |
Key Features
| Feature | Design Value |
|---|---|
| ECOPACK®2 compliance | Meets RoHS and halogen-free requirements for D²PAK variant - supports green manufacturing and export compliance. |
| Low thermal resistance | Rth(j-c) = 0.85 °C/W total enables >50 W continuous dissipation with standard 2 oz copper thermal pad. |
| Avalanche-rated operation | 1015 W peak avalanche power (10 µs) eliminates need for external clamping in flyback snubberless designs. |
| High-temperature junction rating | 175 °C max Tj allows derating headroom in sealed 85 °C ambient telecom systems without thermal shutdown. |
| Low VF / IR trade-off | 0.69 V VF (125 °C) + <30 mA IR (125 °C) balances efficiency and leakage in high-density 1 MHz+ DC/DC converters. |
Applications
| Telecom AC-DC Front-End | Server VRM Synchronous Rectification |
|---|---|
Use Scenario: 48 V input rectification in distributed power architecture (DPA) modules feeding 12 V intermediate bus. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier replacing two discrete diodes to reduce footprint and improve thermal symmetry. Use Value: 0.69 V VF minimizes conduction loss at 20 A per leg, while 170 V VRRM provides 3× safety margin over 48 V bus transients. |
Use Scenario: Secondary-side rectification in multiphase buck converters delivering >100 A to CPU/GPU cores. IC Role / Device Role / Timing Role: Dual-diode configuration enables interleaved conduction across phases, reducing ripple current on output capacitors. Use Value: Shared cathode tab simplifies PCB thermal management; Rth(j-c) = 0.85 °C/W ensures <40 °C junction rise at full load with 2-layer thermal pad. |
| Industrial PLC Power Supply | 5G Remote Radio Unit (RRU) PSU |
Use Scenario: 24 V/48 V isolated DC/DC converter powering I/O modules in harsh factory environments (−40 to +70 °C ambient). IC Role / Device Role / Timing Role: High-reliability rectifier in forward or half-bridge topology with no fan cooling. Use Value: 175 °C Tj rating and <30 mA IR at 125 °C prevent thermal runaway during sustained overload or ambient temperature excursions. |
Use Scenario: Compact, convection-cooled 28 V output stage in outdoor 5G base station RRU power module. IC Role / Device Role / Timing Role: Dual-diode rectifier in active clamp forward converter, leveraging avalanche rating for clamp energy absorption. Use Value: 1015 W PARM handles MOSFET turn-off spikes without snubber losses, improving overall system efficiency by ~1.2%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-40CPH07-M3 | 170 V VRRM, 40 A IF(AV) total, TO-247 package, VF = 0.72 V (125 °C), Rth(j-c) = 0.55 °C/W - lower VF but higher package height and no D²PAK option. | Preferred where vertical space allows and higher thermal performance is needed; not suitable for ultra-thin board designs. | Select when heatsink mounting torque >0.8 N·m is acceptable and board thickness constraints permit TO-247. |
| ON Semiconductor MBR40150CT | 150 V VRRM, 40 A IF(AV) total, TO-220AB package, VF = 0.75 V (125 °C), Rth(j-c) = 1.2 °C/W - lower voltage rating and higher thermal resistance. | Suitable only for ≤36 V input systems; requires larger heatsink due to higher Rth(j-c). | Choose only if cost sensitivity outweighs voltage margin and thermal performance needs in non-telecom applications. |
Compared with VS-40CPH07-M3 and MBR40150CT, STPS40170CG-TR uniquely delivers D²PAK surface-mount compatibility, 170 V rating, and sub-0.7 V VF in a thermally optimized package - making it the preferred choice for space-constrained, high-voltage telecom and server power supplies.
Availability
STPS40170CG-TR is available at Aetrix Electronics and suitable for telecom AC-DC front-ends, server VRM synchronous rectification, and industrial PLC power supplies requiring stable component supply and long-term lifecycle support.
Supply support for STPS40170CG-TR 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 automotive, industrial, and consumer markets.
The STPS40170C series belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability switched-mode power supplies in telecom infrastructure and datacenter equipment.
FAQ
What is the pin configuration of STPS40170CG-TR in D²PAK?
STPS40170CG-TR uses a 3-pin D²PAK layout: Pin 1 is Anode 1, Pin 2 is the exposed cathode tab (electrically and thermally common to both diodes), and Pin 3 is Anode 2. The center tab serves as the sole cathode connection and primary thermal interface - no separate cathode pin exists.
Does STPS40170CG-TR support parallel operation of both diodes?
Yes - both diodes share the same cathode (Pin 2/tab) and are electrically isolated anodes (Pins 1 and 3). Simultaneous conduction is supported, but thermal coupling must be accounted for: ΔTj(diode 1) = P₁ × 1.20 + P₂ × 0.50 °C/W, per DS4412 Table 2.
What is the maximum surge current rating?
The non-repetitive surge forward current (IFSM) is 250 A for a 10 ms sinusoidal pulse, as specified in DS4412 Table 1. This rating applies per diode and assumes Tj ≤ 175 °C prior to surge - critical for inrush limiting in hot-plug telecom modules.
Is ECOPACK®2 compliance verified for the D²PAK variant?
Yes - ST confirms ECOPACK®2 compliance (RoHS-compliant, halogen-free) for the D²PAK version (STPS40170CG-TR), as stated in Section 2 of DS4412 Rev 2. This includes compliant molding compound and lead finish, validated per JEDEC J-STD-020 and IEC 61249-2-21.
STPS40170CG-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 170 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 30 µA @ 170 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
STPS40170CG-TR FAQ
1.How can I place an order for STPS40170CG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS40170CG-TR 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 STPS40170CG-TR reliable?
The price and inventory of STPS40170CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS40170CG-TR is usually 5 days.
3.What payment methods are accepted for STPS40170CG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS40170CG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS40170CG-TR?
STPS40170CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS40170CG-TR 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 STPS40170CG-TR?
For technical support, including STPS40170CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS40170CG-TR requirements.
6.How does Aetrix verify that STPS40170CG-TR is sourced from the original manufacturer or authorized distributors?
All STPS40170CG-TR 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 STPS40170CG-TR meets industry standards.
7.What is the process for return or replacement of STPS40170CG-TR?
All STPS40170CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS40170CG-TR, 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 STPS40170CG-TR part is unused and in its original packaging.
Return procedure for STPS40170CG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS40170CG-TR Tags
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BAT54C-7-F
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BAV99,215
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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