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STMicroelectronics STPST15H100SB-TR
- Part No.:
- STPST15H100SB-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STPST15H100SB-TR.pdf
- Description:
- 100 V, 15 A, DPAK POWER SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:1,150
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Product details
Overview
STPST15H100SB-TR from STMicroelectronics is a 15 A, 100 V Schottky trench rectifier in DPAK package, engineered for high-frequency SMPS and auxiliary power supplies. It delivers typ. 0.595 V forward voltage at 15 A/125 °C, 175 °C max junction temperature, and avalanche-tested ruggedness. Used in telecom server auxiliary rails and LED lighting flyback converters.
For engineers reviewing the STPST15H100SB-TR datasheet, STPST15H100SB-TR pinout, STPST15H100SB-TR application, or STPST15H100SB-TR equivalent, key selection criteria include VF/IR trade-off at high Tj, low Qrr for reduced switching loss, and DPAK thermal performance in compact DC/DC designs.
Technical Context
This device employs ST's proprietary trench Schottky technology to optimize conduction loss (VF) versus reverse leakage (IR) across temperature-enabling stable operation up to 175 °C junction. Its low Qrr and fast recovery minimize reverse recovery losses in hard-switched topologies like flyback and active clamp forward.
The DPAK package provides 0.6 °C/W junction-to-case thermal resistance, supporting high-current density layouts without external heatsinking in space-constrained auxiliary supplies. Avalanche rating (16 A, 300 µH, 15 V) confirms robust unclamped inductive switching capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; supports 48 V input systems with margin. |
| IF(AV) | 15 A - Average forward current at Tc = 165 °C; enables compact 30–50 W auxiliary supply designs. |
| VF (typ.) | 0.595 V @ 15 A, 125 °C - Low conduction loss reduces thermal load in high-duty-cycle applications. |
| Tj (max.) | +175 °C - Enables operation in sealed enclosures or high ambient environments without derating. |
| Rth(j-c) | 0.6 °C/W - Efficient heat transfer to PCB copper; allows direct mounting on 10–15 cm² thermal pad. |
| IAS | 16 A - Single-pulse avalanche current (L = 300 µH, VDD = 15 V); ensures reliability during transient overloads. |
Pinout & Package
Supplied in DPAK (TO-252) package with exposed drain tab for thermal and electrical connection. Three terminals: Anode (pin 1), Cathode (pin 2), and Anode (pin 3 - internally shorted to pin 1 per datasheet).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Main anode terminal | Primary high-current anode connection; electrically tied to pin 3 for parallel current handling. |
| Pin 2 (Cathode) | Cathode output | High-side return path; connects to output rail or ground reference in freewheeling configuration. |
| Pin 3 (Anode) | Secondary anode terminal | Internally shorted to pin 1; improves current sharing and thermal spreading in high-current PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Trench Schottky architecture | Optimizes VF/IR balance at 125–150 °C, reducing conduction loss drift vs. planar Schottky diodes. |
| Avalanche-rated (16 A) | Withstands unclamped inductive energy surges without failure-critical for OR-ing and freewheeling in non-synchronous converters. |
| ECOPACK2 compliance | Meets RoHS, halogen-free, and lead-free reflow requirements for industrial and telecom end equipment. |
| Low Qrr (typ. 22 nC) | Minimizes reverse recovery charge-induced switching loss and EMI in >100 kHz flyback and LLC resonant converters. |
Applications
| Telecom Auxiliary Power Supply | LED Driver Flyback Converter |
|---|---|
Use Scenario: Provides isolated +12 V bias rail for control ICs and gate drivers in 48 V telecom rectifiers. IC Role / Device Role / Timing Role: Freewheeling diode in discontinuous conduction mode (DCM) flyback secondary side. Use Value: 0.595 V VF at 125 °C maintains efficiency >85% under full-load thermal stress. | Use Scenario: Secondary-side rectification in constant-current LED drivers for street lighting. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback topology operating at 65–130 kHz. Use Value: Low Qrr suppresses voltage overshoot and reduces snubber losses by 30% vs. standard Schottky. |
| Server PSU Standby Rail | Smart Meter Power Management |
Use Scenario: Generates +5 VSB rail from main transformer auxiliary winding in 80 PLUS Titanium PSUs. IC Role / Device Role / Timing Role: OR-ing diode enabling seamless transition between primary and backup standby sources. Use Value: 175 °C Tj rating allows uninterrupted operation in sealed chassis with >70 °C ambient. | Use Scenario: Powers microcontroller and RF transceiver in battery-backed smart electricity meters. IC Role / Device Role / Timing Role: Reverse polarity protection and input rectification in dual-supply (AC/DC + battery) front-end. Use Value: Avalanche ruggedness prevents latch-up during line surge events per IEC 61000-4-5 Level 3. |
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-15EWH10-M3 | Higher VF (0.72 V @ 15 A, 125 °C); 150 °C Tj max; TO-252-2L (single anode pin) | Lacks pin 3 anode tie; lower thermal margin in high-density layouts | Prefer when cost sensitivity outweighs thermal performance and avalanche need |
| ON Semiconductor SB15100 | Planar Schottky; VF = 0.75 V @ 15 A, 25 °C; no avalanche rating; Rth(j-c) = 0.85 °C/W | Not rated for unclamped inductive switching; requires larger copper area | Select only for low-temperature, low-reliability consumer applications |
Compared with VS-15EWH10-M3 and SB15100, STPST15H100SB-TR offers superior thermal headroom (175 °C), lower VF at elevated temperature, and verified avalanche capability-making it the preferred choice for industrial and telecom auxiliary supplies demanding long-term reliability.
Availability
STPST15H100SB-TR is available at Aetrix Electronics and suitable for telecom auxiliary power supplies, LED driver flyback converters, and smart meter power management requiring stable component supply and long-lifecycle support.
Supply support for STPST15H100SB-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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
This device belongs to ST's trench Schottky rectifier product line, developed specifically for high-efficiency, high-reliability auxiliary and secondary-side power conversion in compact SMPS designs.
FAQ
What is the maximum allowable case temperature for continuous 15 A operation?
The datasheet specifies IF(AV) = 15 A at Tc = 165 °C with δ = 0.5 square wave. Operation above this case temperature requires derating per Figure 3; at Tc = 175 °C, average current must be reduced to ~12.5 A to maintain safe junction temperature.
Is STPST15H100SB-TR suitable for synchronous rectification?
No-it is a unidirectional Schottky rectifier with fixed anode/cathode polarity and no gate control. Synchronous rectification requires actively switched MOSFETs (e.g., ST's SRK1001 controller paired with N-channel FETs), not passive rectifiers.
Does the DPAK package require solder paste stencil aperture adjustment?
Yes-per TN1173, the recommended footprint uses 0.4 mm thick stencil with 0.5 mm × 0.8 mm apertures for the cathode pad and 0.3 mm × 0.6 mm for anode pads. Exposed tab solder coverage must exceed 80% to achieve specified Rth(j-c) = 0.6 °C/W.
How does its avalanche rating compare to standard Schottky diodes?
Unlike conventional Schottky diodes-which fail catastrophically under unclamped inductive stress-STPST15H100SB-TR is tested to 16 A single-pulse avalanche (EAS ≈ 36 mJ). This enables use in freewheeling paths where inductive kickback exceeds VRRM, such as in non-synchronous buck or flyback converters.
STPST15H100SB-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 740 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 28 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252 (DPAK)
- Operating Temperature - Junction:
- 175°C
STPST15H100SB-TR FAQ
1.How can I place an order for STPST15H100SB-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST15H100SB-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 STPST15H100SB-TR reliable?
The price and inventory of STPST15H100SB-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST15H100SB-TR is usually 5 days.
3.What payment methods are accepted for STPST15H100SB-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST15H100SB-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST15H100SB-TR?
STPST15H100SB-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST15H100SB-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 STPST15H100SB-TR?
For technical support, including STPST15H100SB-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST15H100SB-TR requirements.
6.How does Aetrix verify that STPST15H100SB-TR is sourced from the original manufacturer or authorized distributors?
All STPST15H100SB-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 STPST15H100SB-TR meets industry standards.
7.What is the process for return or replacement of STPST15H100SB-TR?
All STPST15H100SB-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPST15H100SB-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 STPST15H100SB-TR part is unused and in its original packaging.
Return procedure for STPST15H100SB-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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