My Inquiry
My Account
STMicroelectronics STPST12H100SF
- Part No.:
- STPST12H100SF
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
STPST12H100SF.pdf
- Description:
- 100 V, 12 A POWER SCHOTTKY TRENC
- Quantity:
- Payment:
- Shipping:
Inventory:4,270
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STPST12H100SF from STMicroelectronics is a 12 A, 100 V Schottky trench rectifier in PSMC (TO-277A) package, optimized for high-frequency SMPS with low conduction and switching losses. It delivers typ. VF = 0.570 V at 12 A/125 °C, Tj(max) = 175 °C, and Rth(j-c) = 1.0 °C/W, enabling compact auxiliary power supplies in telecom and smart metering systems.
For engineers reviewing the STPST12H100SF datasheet, STPST12H100SF pinout, STPST12H100SF application, or STPST12H100SF equivalent, key selection criteria include forward voltage trade-off at elevated junction temperature, avalanche ruggedness (IAS = 16 A), thermal resistance to case, and flat-package mounting compatibility with high-density PCB layouts.
Technical Context
This device uses ST's proprietary trench Schottky technology to achieve superior VF/IR balance on minimal silicon area-enabling higher efficiency than planar Schottkys at same voltage rating. Its low Qrr and soft reverse recovery minimize EMI in flyback and DC/DC converters operating above 100 kHz.
The PSMC (TO-277A) package features dual anode terminals shorted internally, single cathode terminal, and direct thermal path via exposed metal tab. It supports conduction-cooled mounting without heatsink up to 12 A at Tc = 155 °C under square-wave conditions (δ = 0.5).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking voltage; enables use in 48 V input SMPS with safety margin |
| IF(AV) | 12 A at Tc = 155 °C - average forward current rating under pulsed square-wave (δ = 0.5); defines continuous power handling capability |
| VF (typ.) | 0.570 V at 12 A, 125 °C - low conduction loss reduces I²R heating in high-current auxiliary rails |
| Tj (max.) | +175 °C - extended junction temperature allows operation in thermally constrained enclosures without derating |
| Rth(j-c) | 1.0 °C/W - low thermal resistance enables efficient heat transfer to PCB copper or heatsink via tab |
| IAS | 16 A - single-pulse avalanche current (L = 300 µH, VDD = 15 V); ensures robustness during unclamped inductive switching |
| IR (max.) | 14 mA at 125 °C, VR = 70 V - controlled leakage maintains efficiency in high-temp auxiliary bias supplies |
Pinout & Package
STPST12H100SF is housed in a PSMC (TO-277A) flat, surface-mount package with exposed thermal pad. The package has three terminals: two anodes (internally shorted) and one cathode, enabling low-inductance, high-current routing with minimal PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 / Anode 2 | Input current node (dual parallel connection) | Internally shorted anodes reduce series resistance and improve current sharing; optimized for high-current, low-VF conduction |
| Cathode | Output current node | Single low-inductance cathode terminal minimizes reverse recovery loop area and EMI in high-frequency switching |
Key Features
| Feature | Design Value |
|---|---|
| Trench Schottky architecture | Enables best-in-class VF/IR trade-off at 100 V, reducing both conduction and reverse recovery losses simultaneously |
| Avalanche-rated (IAS = 16 A) | Guarantees safe operation under unclamped inductive switching events common in flyback snubberless designs |
| ECOPACK2 compliance | Meets RoHS, halogen-free, and lead-free soldering requirements without compromising thermal or electrical performance |
| Flat PSMC (TO-277A) package | 0.9–1.24 mm profile enables ultra-thin power modules and space-constrained auxiliary supply layouts |
Applications
| Telecom Auxiliary Supply | Smart Meter Power Rail |
|---|---|
Use Scenario: Provides isolated +5 V or +3.3 V bias for control ICs and communication interfaces in AC/DC front-end of telecom base stations. IC Role / Device Role / Timing Role: Freewheeling rectifier in flyback converter secondary side, delivering stable low-noise auxiliary power. Use Value: Low VF (0.57 V @ 125 °C) and 175 °C Tj rating maintain regulation accuracy and reliability across wide ambient temperature ranges. | Use Scenario: Powers metrology SoC and RF transceivers in battery-backed smart electricity meters with limited board space. IC Role / Device Role / Timing Role: OR-ing diode and reverse polarity protection element in dual-input (mains + battery) power management subsystem. Use Value: Dual-anode configuration lowers effective forward resistance, minimizing voltage drop during battery backup mode. |
| Server PMBus Controller Bias | LED Driver Secondary Rectification |
Use Scenario: Supplies clean, low-noise +12 V to digital power controllers (e.g., PMBus-compliant POLs) in server VRMs. IC Role / Device Role / Timing Role: High-frequency synchronous rectifier replacement in isolated buck-derived auxiliary supply. Use Value: Soft reverse recovery and low Qrr suppress ringing and EMI, ensuring signal integrity on sensitive PMBus lines. | Use Scenario: Rectifies secondary-side output in constant-current LED drivers for street lighting and industrial fixtures. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback topology driving 10–20 W LED strings. Use Value: Flat PSMC package allows double-sided PCB assembly, increasing power density while maintaining thermal performance at 85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NTS4101PT1G | 100 V, 10 A, VF = 0.62 V @ 10 A/125 °C, Rth(j-c) = 1.5 °C/W, SOD-123FL package | Lower current rating and higher thermal resistance limit use to ≤8 A continuous loads; smaller footprint but less thermal headroom | Select when board space is critical and peak load < 8 A; not suitable for 12 A telecom auxiliary rails |
| Vishay VS-12EWH10-M3 | 100 V, 12 A, VF = 0.69 V @ 12 A/125 °C, Rth(j-c) = 1.2 °C/W, TO-277 package | Higher VF increases conduction loss by ~21% vs. STPST12H100SF; identical thermal interface but no avalanche rating | Acceptable where avalanche robustness is not required and 0.12 V higher drop is tolerable for cost-sensitive designs |
Compared with NTS4101PT1G and VS-12EWH10-M3, STPST12H100SF uniquely combines 12 A rating, 0.57 V VF, 1.0 °C/W Rth(j-c), and 16 A avalanche capability in a single ECOPACK2-compliant PSMC package-making it optimal for thermally demanding, high-reliability auxiliary SMPS.
Availability
STPST12H100SF is available at Aetrix Electronics and suitable for telecom auxiliary supplies, smart meter power rails, server PMBus controller bias, and LED driver secondary rectification requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for STPST12H100SF 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
STPST12H100SF belongs to ST's trench Schottky rectifier product line, engineered specifically for high-efficiency, high-frequency switched-mode power conversion in space- and thermal-constrained applications.
FAQ
What is the maximum allowable case temperature for continuous 12 A operation?
The datasheet specifies IF(AV) = 12 A at Tc = 155 °C under square-wave conditions (duty cycle δ = 0.5). Operation at full 12 A requires maintaining case temperature ≤155 °C via adequate copper area or heatsinking; exceeding this temperature necessitates current derating per Figure 3.
Is STPST12H100SF suitable for synchronous rectification replacement?
No-it is a passive Schottky rectifier, not a MOSFET-based synchronous rectifier controller or driver. However, its low VF and soft recovery make it a high-performance alternative to standard Schottkys in non-synchronous flyback or forward converters where gate drive complexity must be avoided.
Does the PSMC (TO-277A) package require solder paste stencil optimization?
Yes-the exposed thermal pad demands precise solder paste volume (typically 50–70% coverage) and reflow profile control to ensure void-free thermal interface. ST recommends using AN5088 guidelines for pad layout, solder mask definition, and thermal via placement beneath the tab.
How does the 16 A avalanche rating translate to real-world reliability?
The 16 A IAS rating (measured per Figure 1/2 with L = 300 µH, VDD = 15 V) guarantees single-event survivability under worst-case unclamped inductive switching-critical in flyback converters lacking snubbers. It reflects tested energy handling (EAS ≈ 0.5 × L × IAS²), not repetitive stress capability.
STPST12H100SF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- TO-277, 3-PowerDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 710 mV @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 24 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
- Operating Temperature - Junction:
- 175°C
STPST12H100SF FAQ
1.How can I place an order for STPST12H100SF through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST12H100SF 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 STPST12H100SF reliable?
The price and inventory of STPST12H100SF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST12H100SF is usually 5 days.
3.What payment methods are accepted for STPST12H100SF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST12H100SF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST12H100SF?
STPST12H100SF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST12H100SF 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 STPST12H100SF?
For technical support, including STPST12H100SF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST12H100SF requirements.
6.How does Aetrix verify that STPST12H100SF is sourced from the original manufacturer or authorized distributors?
All STPST12H100SF 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 STPST12H100SF meets industry standards.
7.What is the process for return or replacement of STPST12H100SF?
All STPST12H100SF units undergo pre-shipment inspection (PSI). If there is an issue with STPST12H100SF, 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 STPST12H100SF part is unused and in its original packaging.
Return procedure for STPST12H100SF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPST12H100SF Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
