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STMicroelectronics STPS3H100AF
- Part No.:
- STPS3H100AF
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
STPS3H100AF.pdf
- Description:
- DIODE SCHOTT 100V 3A SOD128FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:28,546
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Product details
Overview
STPS3H100AF from STMicroelectronics is a high-voltage Schottky barrier rectifier in SOD128Flat package, rated for 100 V repetitive peak reverse voltage and 3 A average forward current at 140 °C lead temperature, with typical forward voltage drop of 0.57 V at 125 °C and 3 A - optimized for high-frequency DC-DC converters and miniature switched-mode power supplies.
For engineers reviewing the STPS3H100AF datasheet, STPS3H100AF pinout, STPS3H100AF application, or STPS3H100AF equivalent, key selection criteria include low conduction loss (0.54×IF(AV) + 0.023×IF²(RMS)), negligible switching losses, 175 °C max junction temperature, avalanche-rated capability (172 W at 10 µs), and ECOPACK®-compliant lead-free packaging.
Technical Context
This Schottky rectifier uses a planar metal-silicon junction to achieve fast recovery (no minority carrier storage) and zero reverse recovery charge, enabling operation at frequencies beyond 1 MHz. Its thermal design centers on low Rth(j-l) of 16 °C/W and stable leakage performance up to 125 °C (max 1.7 mA).
The device supports surge handling up to 79 A (8.3 ms sinusoidal) and features avalanche energy rating validated per IEC 61000-4-5, making it suitable for transient-prone industrial DC-DC stages where reliability under overvoltage stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking voltage without breakdown |
| IF(AV) | 3 A at TL = 140 °C, δ = 0.5 - continuous DC output capability in thermally constrained PCB layouts |
| VF(typ.) | 0.57 V at Tj = 125 °C, IF = 3 A - enables <0.6 W conduction loss at full rated current |
| IR(max) | 1.7 mA at Tj = 125 °C, VR = 100 V - low leakage preserves efficiency in high-impedance hold-up circuits |
| Tj(max) | 175 °C - allows operation in sealed enclosures or high-ambient environments without derating |
| Rth(j-l) | 16 °C/W - defines thermal path from junction to PCB copper pad; requires ≥3.7 mm × 4.6 mm copper area for full rating |
| PARM | 172 W at tp = 10 µs, Tj = 125 °C - quantifies single-pulse avalanche energy absorption capability |
Pinout & Package
STPS3H100AF is housed in the SOD128Flat surface-mount package - a flat, dual-leaded, epoxy-molded outline with exposed cathode pad (E1 dimension 3.7–3.9 mm), designed for high thermal transfer to PCB copper and UL94 V0 flammability compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to input rail or switch node; must be routed with low-inductance trace to minimize voltage overshoot |
| Cathode (K) | Forward current exit / common return | Large copper pour required beneath K pad (≥3.7 mm × 4.6 mm) to sustain 3 A continuous and dissipate 16 °C/W thermal resistance |
Key Features
| Feature | Design Value |
|---|---|
| Negligible switching losses | No reverse recovery charge (Qrr ≈ 0), eliminating switching loss component in high-frequency (>500 kHz) topologies |
| High junction temperature capability | Rated for continuous operation up to 175 °C junction temperature, supporting compact thermal design |
| Low leakage current | 1.5 µA at 25 °C and 100 V reverse bias - minimizes standby power loss in always-on systems |
| Avalanche specification | 172 W single-pulse avalanche energy at 10 µs - provides robustness against inductive kickback in buck/boost converters |
| ECOPACK® compliance | Lead-free, RoHS-compliant, UL94 V0 epoxy - meets global environmental and safety requirements for industrial and consumer end equipment |
Applications
| Server PSU Secondary Side Rectification | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: High-efficiency 12 V → 3.3 V/5 V point-of-load conversion in 1U server power supplies. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacement in secondary-side synchronous rectification circuits. Use Value: 0.57 V VF at 125 °C reduces conduction loss by ~18% vs. standard Schottky diodes, improving overall PSU efficiency above 90%. | Use Scenario: Isolated 48 V → 12 V DC-DC module in programmable logic controllers (PLCs) with wide ambient range (-40 to +70 °C). IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter operating at 250–500 kHz switching frequency. Use Value: 175 °C Tj(max) and 1.7 mA IR at 125 °C ensure stable output regulation across full industrial temperature range without derating. |
| Telecom Power Brick Output | Automotive ADAS Camera Power Supply |
Use Scenario: Compact 48 V input telecom power brick delivering 5 A @ 5 V for base station RF modules. IC Role / Device Role / Timing Role: Secondary-side rectifier in phase-shifted full-bridge topology. Use Value: Avalanche rating (172 W, 10 µs) withstands MOSFET shoot-through transients during startup/fault conditions. | Use Scenario: 12 V → 3.3 V power supply for automotive-grade camera modules operating in engine bay environments. IC Role / Device Role / Timing Role: Low-noise, low-loss rectifier in isolated flyback supplying image sensor and ISP. Use Value: ECOPACK® lead-free construction and -65 to +175 °C storage range meet AEC-Q200 stress test requirements for under-hood deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MBR3100F-E3/45 | Same 100 V VRRM, 3 A IF(AV), but VF = 0.82 V typ. at 25 °C - higher conduction loss | Lacks avalanche rating and specified Rth(j-l); not qualified for transient-heavy industrial use | Prefer STPS3H100AF where thermal margin or surge immunity is critical |
| Vishay VS-3EY100-M3/54 | 100 V, 3 A, VF = 0.72 V typ. at 25 °C; Rth(j-l) = 18 °C/W - slightly lower thermal performance | Qualified to AEC-Q101 but lacks explicit avalanche energy spec; better for automotive than industrial surge | Choose STPS3H100AF for higher avalanche robustness and lower VF at elevated temperature |
Compared with MBR3100F-E3/45 and VS-3EY100-M3/54, STPS3H100AF delivers superior thermal performance (16 °C/W), lower VF at high temperature (0.57 V @ 125 °C), and verified 172 W avalanche capability - making it optimal for high-reliability, high-frequency DC-DC designs where efficiency and transient resilience are co-prioritized.
Availability
STPS3H100AF is available at Aetrix Electronics and suitable for server power supplies, industrial PLCs, telecom power bricks, and automotive ADAS camera modules requiring stable component supply and long-term production continuity.
Supply support for STPS3H100AF 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.
STPS3H100AF belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-frequency DC-DC conversion in space-constrained and thermally demanding applications.
FAQ
What is the maximum allowable PCB copper area for thermal optimization of STPS3H100AF?
The SOD128Flat package requires a minimum copper area of 3.7 mm × 4.6 mm (E1 × E dimensions) beneath the cathode pad to achieve the specified Rth(j-l) of 16 °C/W. Larger copper pours further reduce thermal resistance, but the datasheet confirms full 3 A rating is achievable with this footprint on FR4 with 35 µm copper thickness.
Does STPS3H100AF support synchronous rectification drive schemes?
No - STPS3H100AF is a passive Schottky diode and does not integrate gate drive or control logic. It functions as a freewheeling or output rectifier only. For synchronous rectification, discrete MOSFETs with external gate drivers or dedicated SR controllers (e.g., STSR3) must be used in conjunction.
How is the 172 W avalanche rating measured and what test conditions apply?
The 172 W avalanche rating is measured per IEC 61000-4-5 with a 10 µs pulse duration at Tj = 125 °C. It represents single-pulse non-repetitive energy absorption capability under controlled avalanche breakdown, validated through standardized surge testing - not a continuous dissipation rating.
Is STPS3H100AF compatible with lead-free reflow profiles per JEDEC J-STD-020?
Yes - STPS3H100AF is qualified for lead-free reflow soldering with a peak temperature of 260 °C (per JEDEC J-STD-020D). The ECOPACK®-compliant package uses lead-free terminations and UL94 V0 epoxy, and its SOD128Flat outline is designed for standard Type 3 solder paste and 60–90 sec above 220 °C profile.
STPS3H100AF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 760 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.5 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD128Flat
- Operating Temperature - Junction:
- -40°C ~ 175°C
STPS3H100AF FAQ
1.How can I place an order for STPS3H100AF through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS3H100AF 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 STPS3H100AF reliable?
The price and inventory of STPS3H100AF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS3H100AF is usually 5 days.
3.What payment methods are accepted for STPS3H100AF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS3H100AF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS3H100AF?
STPS3H100AF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS3H100AF 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 STPS3H100AF?
For technical support, including STPS3H100AF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS3H100AF requirements.
6.How does Aetrix verify that STPS3H100AF is sourced from the original manufacturer or authorized distributors?
All STPS3H100AF 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 STPS3H100AF meets industry standards.
7.What is the process for return or replacement of STPS3H100AF?
All STPS3H100AF units undergo pre-shipment inspection (PSI). If there is an issue with STPS3H100AF, 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 STPS3H100AF part is unused and in its original packaging.
Return procedure for STPS3H100AF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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