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STMicroelectronics STPS30170DJF-TR
- Part No.:
- STPS30170DJF-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- 8-PowerVDFN
- Datasheet:
-
STPS30170DJF-TR.pdf
- Description:
- DIODE SCHOTTKY 170V 30A PWRFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:4,709
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Product details
Overview
STPS30170DJF-TR from STMicroelectronics is a 170 V, 30 A average forward current Schottky rectifier in PowerFLAT™ 5x6 package, optimized for high-frequency DC/DC converters and SMPS with low conduction losses (VF = 0.71 V @ 125 °C, 30 A), low thermal resistance (Rth(j-c) = 2.5 °C/W), and high avalanche capability (900 W, tp = 10 µs). It serves as a fast-switching, low-VF freewheeling or polarity protection diode in telecom power supplies.
For engineers reviewing the STPS30170DJF-TR datasheet, STPS30170DJF-TR pinout, STPS30170DJF-TR application, or STPS30170DJF-TR equivalent, key selection criteria include reverse voltage rating (170 V), thermal performance under PCB copper area constraints, avalanche energy handling, conduction loss modeling (P = 0.65×IF(AV) + 0.0046×IF²(RMS)), and ECOPACK®2 compliance for RoHS- and halogen-free manufacturing.
Technical Context
This Schottky rectifier uses a planar silicon structure with metal–semiconductor junction to achieve negligible switching losses and extremely fast recovery (no minority-carrier storage). Its VF vs. IF curve shows strong temperature compensation - VF drops from 0.88 V (25 °C) to 0.71 V (125 °C) at 30 A - enabling stable conduction across wide ambient ranges.
Designed for conduction-dominated topologies, it specifies Rth(j-c) = 2.5 °C/W and supports up to 45 A RMS forward current with proper heatsinking. Avalanche robustness is characterized at 900 W (tp = 10 µs, Tj = 125 °C), making it suitable for inductive load commutation where transient overvoltage occurs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback or buck-boost topologies. |
| IF(AV) | 30 A - Average forward current at TC = 80 °C, δ = 0.5; sets continuous output capability in DC/DC stages. |
| VF(typ.) | 0.71 V @ 125 °C, 30 A - Low forward drop directly reduces conduction loss and improves efficiency at full load and elevated temperature. |
| Rth(j-c) | 2.5 °C/W - Junction-to-case thermal resistance; enables direct PCB copper pad cooling without external heatsink in space-constrained designs. |
| PARM | 900 W @ tp = 10 µs, Tj = 125 °C - Repetitive avalanche power rating; ensures reliability during inductive turn-off transients in motor drives or SMPS. |
| IR(max) | 12 mA @ Tj = 125 °C, VR = VRRM - Reverse leakage limits standby power loss and thermal runaway risk in high-temp operation. |
| Package | PowerFLAT™ 5x6 - Surface-mount, low-profile (1.0 mm max height), thermally enhanced package with exposed cathode pad for optimal heat transfer. |
Pinout & Package
STPS30170DJF-TR uses a 2-terminal PowerFLAT™ 5x6 package with anode and cathode terminals on the bottom side. The exposed copper pad (cathode) provides primary thermal path to PCB; no internal isolation or control pins are present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to source-side of switching node; must withstand surge current (IFSM = 200 A) and reverse voltage stress. |
| Cathode (exposed pad) | Output current exit & thermal interface | Serves dual role: electrical return path and primary heat dissipation surface; requires minimum 3.34 × 3.70 mm² copper area per Figure 8. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | VF = 0.71 V @ 125 °C, 30 A - Reduces conduction loss by ~15% vs. comparable 150 V Schottkys at same current and temperature. |
| High avalanche capability | 900 W repetitive avalanche power - Enables use in unclamped inductive circuits without external snubbers in telecom DC/DC modules. |
| Low thermal resistance | Rth(j-c) = 2.5 °C/W - Allows 30 A continuous operation with ≤30 °C junction rise above case when mounted on ≥6 cm² 70 µm Cu. |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant materials - Meets IPC-1752A Class 2 reporting requirements for industrial and telecom OEMs. |
| Extremely fast switching | No reverse recovery charge (Qrr ≈ 0) - Eliminates switching loss and EMI associated with PN diode tail current in >300 kHz converters. |
Applications
| Telecom DC/DC Brick | Server VRM Output Rectification |
|---|---|
Use Scenario: 48 V input to 12 V/30 A isolated DC/DC converter in telecom shelf power system. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous rectified forward topology, conducting during low-side MOSFET off-time. Use Value: 0.71 V VF at 125 °C maintains >94% efficiency at full load while limiting junction temperature rise to <150 °C with 4 cm² thermal pad. | Use Scenario: Secondary-side rectification in multiphase 12 V → 1.2 V VRM for AI accelerator cards. IC Role / Device Role / Timing Role: Asynchronous rectifier replacing synchronous MOSFETs in cost-sensitive, medium-efficiency VRMs. Use Value: Zero Qrr eliminates shoot-through risk and gate drive complexity; 2.5 °C/W Rth(j-c) enables compact layout without thermal vias. |
| Industrial PoE++ PSE | Automotive ADAS Camera Power Supply |
Use Scenario: 57 V PoE++ power sourcing equipment delivering up to 90 W with active current limiting. IC Role / Device Role / Timing Role: Polarity protection diode at input stage, blocking reverse connection while passing full 90 W load. Use Value: 170 V VRRM exceeds IEEE 802.3bt Class 8 peak voltage (57 V × 1.5 = 85.5 V); 12 mA IR at 125 °C prevents thermal runaway during sustained overload. | Use Scenario: 12 V input to 3.3 V/2 A DC/DC supply for 77 GHz radar camera module in engine bay. IC Role / Device Role / Timing Role: Input protection diode preventing damage from battery jump-start reverse polarity events. Use Value: 200 A IFSM withstands 12 V jump-start surges; PowerFLAT™ 5x6's 1.0 mm profile fits under tight shield can; ECOPACK®2 meets automotive material compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH17-M3/45-E3 | TO-220AC package, Rth(j-c) = 2.0 °C/W, VF = 0.82 V @ 125 °C, 30 A | Requires mechanical mounting and heatsink; higher VF increases conduction loss by ~15% | Preferred where legacy through-hole assembly or higher surge margin (IFSM = 300 A) is required. |
| ON Semiconductor MBR30H170CT | TO-220AB dual-die, common-cathode, VF = 0.85 V @ 25 °C, 30 A, no avalanche rating specified | Not rated for repetitive avalanche; larger footprint; unsuitable for unclamped inductive loads | Acceptable only in non-avalanche-critical, lower-frequency (<100 kHz) SMPS with adequate clamping. |
Compared with VS-30CPH17-M3/45-E3 and MBR30H170CT, STPS30170DJF-TR delivers superior thermal integration via PowerFLAT™, lower VF at operating temperature, and guaranteed avalanche ruggedness - critical for high-density, high-reliability telecom and industrial DC/DC designs.
Availability
STPS30170DJF-TR is available at Aetrix Electronics and suitable for telecom power bricks, server VRMs, PoE++ PSE units, and automotive ADAS camera power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for STPS30170DJF-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, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
STPS30170DJF-TR belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-efficiency, high-power-density DC/DC conversion in space-constrained, thermally demanding applications such as 48 V telecom infrastructure and AI server power.
FAQ
What is the maximum allowable PCB copper area for thermal performance?
The datasheet specifies Rth(j-a) reduction versus copper surface area in Figure 8: with 6 cm² of 35 µm copper on FR4, Rth(j-a) drops to ~6.5 °C/W. For 30 A continuous operation, ≥4 cm² is recommended to maintain Tj ≤ 150 °C at 80 °C ambient. Thermal vias under the cathode pad further improve performance but are not mandatory.
Does STPS30170DJF-TR support synchronous rectification?
No - STPS30170DJF-TR is a passive Schottky rectifier, not a synchronous rectifier IC or MOSFET driver. It operates as a unidirectional freewheeling or polarity protection device. Synchronous rectification requires active gate-controlled MOSFETs with timing control circuitry, which this part does not provide or support.
Is the PowerFLAT™ 5x6 package lead-free and RoHS-compliant?
Yes - STPS30170DJF-TR carries ECOPACK®2 certification, confirming full compliance with EU RoHS Directive 2011/65/EU and halogen-free material content per IEC 61249-2-21. The solderable terminations use matte tin plating over nickel, qualified for standard reflow profiles including JEDEC J-STD-020 moisture sensitivity level 3.
How is avalanche capability tested and rated?
Avalanche energy is measured per IEC 61188-5-2 using unclamped inductive switching (UIS) test: 900 W is the peak power (V × I) delivered during a 10 µs pulse at Tj = 125 °C, with repetitive rating confirmed for ≥10⁴ cycles. This validates robustness against inductive kickback in flyback or boost converters without external clamping components.
STPS30170DJF-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-PowerVDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 170 V
- Current - Average Rectified (Io):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 15 µA @ 170 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerFlat™ (5x6)
- Operating Temperature - Junction:
- 150°C (Max)
STPS30170DJF-TR FAQ
1.How can I place an order for STPS30170DJF-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS30170DJF-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 STPS30170DJF-TR reliable?
The price and inventory of STPS30170DJF-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS30170DJF-TR is usually 5 days.
3.What payment methods are accepted for STPS30170DJF-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS30170DJF-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS30170DJF-TR?
STPS30170DJF-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS30170DJF-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 STPS30170DJF-TR?
For technical support, including STPS30170DJF-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS30170DJF-TR requirements.
6.How does Aetrix verify that STPS30170DJF-TR is sourced from the original manufacturer or authorized distributors?
All STPS30170DJF-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 STPS30170DJF-TR meets industry standards.
7.What is the process for return or replacement of STPS30170DJF-TR?
All STPS30170DJF-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS30170DJF-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 STPS30170DJF-TR part is unused and in its original packaging.
Return procedure for STPS30170DJF-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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