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STMicroelectronics STPST5H100SB-TR
- Part No.:
- STPST5H100SB-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STPST5H100SB-TR.pdf
- Description:
- 100 V, 5 A, DPAK POWER SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:14,990
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Product details
Overview
STPST5H100SB-TR from STMicroelectronics is a 5 A, 100 V Schottky trench rectifier in DPAK package, optimized for high-frequency SMPS with low conduction and switching losses. It delivers typ. 0.55 V forward voltage at 5 A/125 °C, supports 175 °C max junction temperature, and is avalanche-tested for ruggedness in flyback and auxiliary power supply designs.
For engineers reviewing the STPST5H100SB-TR datasheet, STPST5H100SB-TR pinout, STPST5H100SB-TR application, or STPST5H100SB-TR equivalent, key selection criteria include VF/IR trade-off at high Tj, low Qrr for reduced reverse recovery loss, DPAK thermal performance (Rth(j-c) = 1.3 °C/W), and ECOPACK2 compliance for industrial and telecom power systems.
Technical Context
This device employs ST's proprietary trench Schottky technology to achieve superior forward voltage versus reverse leakage balance-typ. 0.55 V at 5 A/125 °C and only 1.0 mA IR at 70 V/125 °C. Its low Qrr minimizes switching loss during hard-commutation in high-frequency DC/DC converters.
The DPAK package enables efficient heat transfer via the exposed cathode tab, supporting continuous 5 A operation at Tc = 165 °C. Avalanche rating (IAS = 9 A, L = 300 µH) confirms robustness under unclamped inductive switching, critical for OR-ing and freewheeling in server auxiliary supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking voltage without breakdown |
| IF(AV) | 5 A - average forward current at Tc = 165 °C, δ = 0.5 square wave |
| VF (typ.) | 0.55 V @ 5 A, 125 °C - directly determines conduction loss (Pcond ≈ 0.42×IF + 0.036×IF²) |
| Rth(j-c) | 1.3 °C/W - junction-to-case thermal resistance enabling high-power density layout |
| Tj (max) | +175 °C - extended operating range improves reliability in thermally constrained enclosures |
| Qrr (est.) | Low - inferred from low VF/IR trade-off and stated "low recovery charges" reducing reverse recovery loss |
| IAS | 9 A - single-pulse avalanche current (L = 300 µH, VDD = 15 V), validates ruggedness in fault conditions |
Pinout & Package
Supplied in DPAK (TO-252) package with exposed cathode tab for thermal and electrical connection. Package meets UL94 V0 and ECOPACK2 environmental requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (2 pins) | Forward current entry point | Parallel anode terminals reduce bondwire inductance and improve current sharing |
| Cathode (tab) | Forward current exit / thermal path | Exposed metal tab serves as primary thermal interface and low-inductance cathode connection |
Key Features
| Feature | Design Value |
|---|---|
| Trench Schottky architecture | Enables best-in-class VF/IR trade-off at 100 V, reducing both conduction and leakage losses simultaneously |
| 175 °C max junction temperature | Supports compact heatsink design and higher ambient operation in telecom and smart metering enclosures |
| Avalanche-rated (9 A) | Guarantees safe operation under unclamped inductive switching, eliminating need for external snubbers in flyback clamping |
| ECOPACK2 compliance | Meets RoHS, halogen-free, and material declaration requirements for global industrial and energy infrastructure programs |
Applications
| DC/DC Converter | LED Lighting Driver |
|---|---|
Use Scenario: High-efficiency 12 V–48 V isolated buck-derived DC/DC module for PoE-powered access points. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFETs in secondary-side regulation. Use Value: 0.55 V VF at 125 °C reduces output conduction loss by ~18% vs. standard Schottky diodes, improving full-load efficiency to >92%. | Use Scenario: Constant-current LED driver for streetlight modules with wide input range (90–305 VAC). IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in quasi-resonant flyback topology. Use Value: Low Qrr minimizes reverse recovery spikes, enabling stable operation at 100 kHz+ while meeting EN61000-3-2 harmonic limits. |
| Auxiliary Power Supply | Server PSU Standby Rail |
Use Scenario: 5 V/1 A auxiliary supply in telecom base station main PSU for control logic and fan drivers. IC Role / Device Role / Timing Role: Rectifier in low-power flyback converter feeding standby regulator. Use Value: 175 °C Tj rating allows derating-free operation at 70 °C board temperature, ensuring >10-year lifetime in sealed cabinets. | Use Scenario: OR-ing diode in redundant 12 V standby rail of dual-input server PSUs. IC Role / Device Role / Timing Role: Reverse polarity protection and load-sharing diode. Use Value: Low VF and avalanche rating prevent thermal runaway during hot-swap events and ensure fail-safe isolation between parallel rails. |
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-5EY10U-M3/45 | 5 A, 100 V, VF = 0.62 V @ 5 A/25 °C; Rth(j-c) = 2.0 °C/W; no avalanche rating | Lacks IAS spec; higher VF increases conduction loss at elevated Tj | Acceptable where ambient Tj stays < 100 °C and fault energy is limited |
| ON Semiconductor SB5100-E3/54 | 5 A, 100 V, VF = 0.75 V @ 5 A/25 °C; DPAK; no trench process; IR = 10x higher at 125 °C | Higher VF and IR degrade efficiency and thermal margin in high-density SMPS | Suitable only for cost-sensitive, low-frequency (<50 kHz), non-avalance-critical designs |
Compared with VS-5EY10U-M3/45 and SB5100-E3/54, STPST5H100SB-TR provides lower VF at high temperature, verified avalanche capability, and tighter IR control-making it preferred for high-reliability, high-frequency telecom and server auxiliary supplies where thermal headroom and fault robustness are critical.
Availability
STPST5H100SB-TR is available at Aetrix Electronics and suitable for DC/DC converters, LED lighting drivers, and auxiliary power supplies requiring stable component supply across industrial, telecom, and energy infrastructure programs.
Supply support for STPST5H100SB-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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
This part belongs to ST's high-voltage Schottky trench rectifier product line, engineered specifically for high-frequency, high-efficiency switched-mode power supplies where low VF, low Qrr, and thermal resilience are mandatory.
FAQ
What is the maximum allowable case temperature for continuous 5 A operation?
The datasheet specifies IF(AV) = 5 A at Tc = 165 °C with δ = 0.5 square wave. Operation above this requires derating per Figure 3; at Tc = 175 °C, IF(AV) drops to ~4.2 A. Thermal design must maintain Tc ≤ 165 °C for full-rated current.
Is STPST5H100SB-TR suitable for synchronous rectification?
No-it is a unidirectional Schottky rectifier, not a MOSFET-based synchronous rectifier controller or driver. It functions as a passive rectifying element and cannot be actively gated. For synchronous rectification, ST offers dedicated SR controllers like SRK1001.
Does the DPAK package require solder paste stencil aperture adjustments for the exposed cathode tab?
Yes-the exposed cathode tab demands a larger stencil aperture (typically 100–120% area ratio) and stepped thickness to ensure void-free solder joint formation and optimal thermal transfer. Refer to ST's AN5088 for recommended pad layout and reflow profile.
How does the avalanche rating translate to real-world reliability in flyback designs?
The 9 A IAS rating (L = 300 µH, VDD = 15 V) corresponds to 60.75 mJ single-pulse avalanche energy. This exceeds typical flyback clamp energy in 5–10 W auxiliary supplies, preventing catastrophic failure during output short-circuit or startup transients without added protection circuitry.
STPST5H100SB-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):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 685 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 11.5 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252 (DPAK)
- Operating Temperature - Junction:
- 175°C
STPST5H100SB-TR FAQ
1.How can I place an order for STPST5H100SB-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST5H100SB-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 STPST5H100SB-TR reliable?
The price and inventory of STPST5H100SB-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST5H100SB-TR is usually 5 days.
3.What payment methods are accepted for STPST5H100SB-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST5H100SB-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST5H100SB-TR?
STPST5H100SB-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST5H100SB-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 STPST5H100SB-TR?
For technical support, including STPST5H100SB-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST5H100SB-TR requirements.
6.How does Aetrix verify that STPST5H100SB-TR is sourced from the original manufacturer or authorized distributors?
All STPST5H100SB-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 STPST5H100SB-TR meets industry standards.
7.What is the process for return or replacement of STPST5H100SB-TR?
All STPST5H100SB-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPST5H100SB-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 STPST5H100SB-TR part is unused and in its original packaging.
Return procedure for STPST5H100SB-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPST5H100SB-TR Tags
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