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STMicroelectronics STPS30100ST
- Part No.:
- STPS30100ST
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-3
- Datasheet:
-
STPS30100ST.pdf
- Description:
- DIODE SCHOTTKY 100V 30A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:4,347
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Product details
Overview
STPS30100ST from STMicroelectronics is a 100 V, 30 A average forward current Schottky rectifier in TO-220AB package, optimized for high-frequency switch-mode power supplies. It delivers low typical forward voltage (0.605 V at 30 A, 125 °C), specified avalanche capability (1900 W, 10 µs), and operates up to 150 °C junction temperature-enabling high-efficiency operation in notebook and game station AC/DC adapters.
For engineers reviewing the STPS30100ST datasheet, STPS30100ST pinout, STPS30100ST application, or STPS30100ST equivalent, key selection criteria include forward voltage trade-off vs. leakage at elevated temperature, thermal resistance (1 °C/W junction-to-case), avalanche robustness, and TO-220AB mounting torque specification (0.55 N·m recommended).
Technical Context
This single-diode Schottky rectifier uses a planar silicon structure with metal-semiconductor junction optimized for fast recovery (<10 ns) and minimal reverse recovery charge-critical for reducing switching losses in DC/DC converters operating above 100 kHz. Its low VF stems from low barrier height design, balanced against controlled leakage (20–50 mA at 125 °C, VR = 100 V).
The device features fully specified avalanche energy rating (1900 W peak, 10 µs pulse at Tj = 125 °C) and thermal derating validated per JEDEC standards. Junction-to-case thermal resistance of 1 °C/W enables direct heatsink mounting without thermal interface material under moderate load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 30 A at Tc = 125 °C, δ = 0.5 - defines continuous conduction capability in thermally managed SMPS designs |
| VRRM | 100 V - maximum repetitive reverse blocking voltage for primary-side rectification in 48 V–72 V output systems |
| VF (typ.) | 0.605 V at IF = 30 A, Tj = 125 °C - directly determines conduction loss (P ≈ 0.475×IF + 0.006×IF²) |
| IR (max) | 50 mA at VR = 100 V, Tj = 125 °C - sets standby power loss budget in high-temp environments |
| Rth(j-c) | 1 °C/W - enables direct heatsink attachment with predictable thermal rise under 30 A DC load |
| PARM | 1900 W at tp = 10 µs, Tj = 125 °C - quantifies single-pulse avalanche energy handling for transient overvoltage protection |
| Tj (max) | 150 °C - supports operation in compact, sealed enclosures without forced air cooling |
Pinout & Package
Housed in TO-220AB package with isolated tab (terminal 2), the STPS30100ST has three terminals: terminal 1 (anode), terminal 2 (cathode/tab), and terminal 3 (anode). The cathode is electrically connected to the metal tab for low-inductance, high-current return path and thermal conduction to heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode | Primary anode connection; electrically tied to terminal 3; used for PCB trace routing where tab isolation is required |
| Terminal 2 | Cathode / Heatsink Tab | Electrically common cathode and thermal interface; requires insulating washer if mounted to grounded heatsink |
| Terminal 3 | Anode | Second anode connection; shorted internally to terminal 1; provides dual-anode layout flexibility |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at high current | 0.605 V typ. @ 30 A, 125 °C - reduces conduction loss by ~15% vs. comparable 100 V Schottkys at full load |
| Avalanche capability | 1900 W peak, 10 µs pulse - eliminates need for external clamping in flyback snubberless designs |
| Thermal resistance | 1 °C/W junction-to-case - allows 30 A operation with ≤30 °C case-to-ambient rise using standard TO-220 heatsink |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy - meets IEC 61249-2-21 and JEDEC J-STD-020 reflow requirements |
| High-frequency operation | Negligible Qrr and trr < 10 ns - minimizes switching loss in 300–500 kHz DC/DC topologies |
Applications
| AC/DC Adapter Rectification | DC/DC Converter Output Stage |
|---|---|
Use Scenario: Primary-side rectification in 65 W notebook adapters with universal input (90–264 VAC) and 19 V/3.4 A output. IC Role / Device Role / Timing Role: High-frequency Schottky rectifier replacing fast recovery diodes to reduce conduction loss and improve efficiency >90% at full load. Use Value: 0.605 V VF at 30 A lowers power dissipation by 2.1 W vs. legacy 0.72 V diode, enabling smaller heatsink and higher power density. | Use Scenario: Synchronous rectification replacement in 12 V → 3.3 V buck converter for gaming console SoC power rail. IC Role / Device Role / Timing Role: Freewheeling diode in non-synchronous buck stage operating at 350 kHz switching frequency. Use Value: Sub-10 ns reverse recovery eliminates shoot-through risk and reduces EMI generation compared to Si PN diodes. |
| LED Driver Secondary Side | Desktop PSU +12 V Rail |
Use Scenario: Output rectification in constant-current LED driver for commercial downlight (48 V, 1.2 A). IC Role / Device Role / Timing Role: Low-loss secondary-side rectifier in quasi-resonant flyback topology. Use Value: 50 mA max IR at 125 °C ensures <0.5 W standby loss, meeting Energy Star v2.0 no-load requirements. | Use Scenario: +12 V main rail rectification in ATX desktop power supply with active PFC front-end. IC Role / Device Role / Timing Role: Bulk output rectifier handling 25 A continuous current with 100 ms surge capability (300 A IFSM). Use Value: 1900 W avalanche rating withstands line transients without failure, improving system reliability over standard rectifiers. |
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-30CPH01-M3 | Same 100 V VRRM, 30 A IF(AV), but VF = 0.67 V @ 30 A, 125 °C; Rth(j-c) = 1.2 °C/W | Higher conduction loss (+0.8 W at 30 A); less suitable for thermally constrained adapters | Prefer when cost sensitivity outweighs 3% efficiency penalty and heatsink margin exists |
| ON Semiconductor MBR30100CT | Dual common-cathode configuration; VF = 0.72 V @ 30 A, 125 °C; no avalanche rating specified | Requires board redesign for single-diode footprint; lacks transient robustness for unclamped topologies | Select only if dual-output requirement exists and external TVS/clamp is added for surge protection |
Compared with VS-30CPH01-M3 and MBR30100CT, the STPS30100ST offers the lowest VF at high temperature and verified avalanche performance-making it optimal for space-constrained, high-reliability AC/DC adapters where thermal headroom and transient immunity are critical.
Availability
STPS30100ST is available at Aetrix Electronics and suitable for AC/DC adapters, DC/DC converters, and LED lighting systems requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for STPS30100ST 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 STPS series targets high-efficiency power conversion, with STPS30100ST specifically engineered for high-current, high-frequency Schottky rectification in compact, thermally demanding AC/DC and DC/DC applications.
FAQ
Is the STPS30100ST pin-compatible with standard TO-220AB diodes?
Yes-the STPS30100ST uses industry-standard TO-220AB mechanical dimensions (per Table 4 in DS5095), including 2.54 mm lead pitch and 15.5 mm body width. Terminal 1 and 3 are internally shorted anodes, and terminal 2 is the cathode/tab, matching conventional TO-220AB diode pinout orientation.
What is the maximum allowable mounting torque for the TO-220AB package?
The recommended torque value is 0.55 N·m, with a maximum allowable torque of 0.70 N·m (Section 2.1, DS5095). Exceeding 0.70 N·m risks cracking the epoxy body or deforming the leads, potentially compromising thermal contact or electrical integrity.
Does STPS30100ST require a thermal pad or insulator when mounted to a heatsink?
Yes-terminal 2 (cathode/tab) is electrically live. If the heatsink is grounded or at a different potential, an insulating washer (e.g., mica or silicone pad) rated for ≥150 °C must be used. Thermal interface material is optional due to the low Rth(j-c) of 1 °C/W, but improves consistency in production assembly.
How is avalanche capability tested and rated for STPS30100ST?
Avalanche energy is tested per JEDEC JESD24-11: 10 µs unidirectional current pulse at Tj = 125 °C, with peak power limited to 1900 W. This rating is validated across production lots and reflects single-pulse survivability-not repetitive operation-and is intended for transient suppression during inductive switching events.
STPS30100ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 175 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
- Operating Temperature - Junction:
- 150°C (Max)
STPS30100ST FAQ
1.How can I place an order for STPS30100ST through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS30100ST 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 STPS30100ST reliable?
The price and inventory of STPS30100ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS30100ST is usually 5 days.
3.What payment methods are accepted for STPS30100ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS30100ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS30100ST?
STPS30100ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS30100ST 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 STPS30100ST?
For technical support, including STPS30100ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS30100ST requirements.
6.How does Aetrix verify that STPS30100ST is sourced from the original manufacturer or authorized distributors?
All STPS30100ST 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 STPS30100ST meets industry standards.
7.What is the process for return or replacement of STPS30100ST?
All STPS30100ST units undergo pre-shipment inspection (PSI). If there is an issue with STPS30100ST, 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 STPS30100ST part is unused and in its original packaging.
Return procedure for STPS30100ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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