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STMicroelectronics STPST2H100ZFY
- Part No.:
- STPST2H100ZFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
STPST2H100ZFY.pdf
- Description:
- AUTOMOTIVE 100 V, 2 A POWER SCHO
- Quantity:
- Payment:
- Shipping:
Inventory:7,726
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Product details
Overview
STPST2H100ZFY from STMicroelectronics is an AEC-Q101-qualified 2 A, 100 V automotive Schottky trench rectifier in SOD123Flat package, featuring 0.620 V typical forward voltage at 125 °C and 2 A, 175 °C max junction temperature, and 100% avalanche tested - deployed in automotive LED lighting and ECU power supplies.
For engineers reviewing the STPST2H100ZFY datasheet, STPST2H100ZFY pinout, STPST2H100ZFY application, or STPST2H100ZFY equivalent, key selection criteria include low VF/IR trade-off, flat-package thermal performance (Rth(j-l) = 15 °C/W), AEC-Q101 qualification, and suitability for high-frequency flyback and OR-ing topologies.
Technical Context
This Schottky rectifier uses ST's proprietary trench technology to optimize conduction loss (VF) versus reverse leakage (IR) across -40 °C to +175 °C operation. It delivers 0.520–0.575 V VF at 125 °C/1 A and maintains <0.75 mA IR at 125 °C/70 V.
Designed for space-constrained automotive DC/DC converters, it supports freewheeling, reverse polarity protection, and OR-ring functions with low recovery charge and no minority-carrier storage delay - enabling efficient switching up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - blocks up to 100 V reverse voltage without breakdown in automotive transients |
| IF(AV) | 2 A - continuous average forward current at TL = 140 °C on PCB, suitable for compact ECU rails |
| VF (typ.) | 0.620 V @ 125 °C, 2 A - reduces conduction loss by ~30% vs. planar Schottkys at same rating |
| Tj (max) | +175 °C - enables placement near hot engine-control components without derating |
| Rth(j-l) | 15 °C/W - enables direct lead-to-PCB thermal path in SOD123Flat, critical for passive cooling |
| IAS | 3 A - single-pulse avalanche energy rating verified per unclamped inductive test (L = 300 µH) |
| ECOPACK2 | Compliant - meets RoHS and halogen-free requirements for automotive production |
Pinout & Package
SOD123Flat is a surface-mount, two-terminal, flat-lead package optimized for thermal dissipation and board area reduction. Dimensions: 2.60 × 1.60 × 0.98 mm (L × W × H), with 1.40 mm pad pitch and 1.30 mm solder footprint width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry | Connected to input/high-side rail in flyback secondary or OR-ing configuration |
| Cathode (K) | Forward current exit / reverse blocking node | Connected to output/load; withstands 100 V reverse bias while leaking <0.75 mA at 125 °C |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments including thermal cycling, humidity, and vibration stress |
| Low VF/IR trade-off | Trench architecture achieves 0.620 V VF and 0.25 mA IR simultaneously at 125 °C - minimizes combined conduction/reverse loss |
| 100% avalanche tested | Every unit passes unclamped inductive switching test (EAS = ½ × L × IAS²) - ensures robustness in inductive load turn-off |
| Flat package thermal design | SOD123Flat geometry maximizes copper contact area on PCB, delivering Rth(j-l) = 15 °C/W without heatsink |
Applications
| Automotive LED Headlamp Supply | Flyback Secondary Rectification |
|---|---|
Use Scenario: High-brightness LED driver in headlamp module requiring compact, thermally stable 12 V → 48 V DC/DC conversion. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback, handling 2 A average current at >200 kHz switching. Use Value: 0.620 V VF at 125 °C reduces power loss by 0.25 W vs. legacy Schottky, lowering thermal stress on adjacent MCU. | Use Scenario: Secondary-side rectification in 12 V automotive infotainment DC/DC converter with tight board space. IC Role / Device Role / Timing Role: Freewheeling diode during MOSFET off-time; fast zero-recovery enables high-frequency operation. Use Value: Low Qrr and no reverse recovery tail eliminate snubber losses, improving efficiency by ~1.2% at 300 kHz. |
| ECU Power Rail Protection | Reverse Polarity Input Protection |
Use Scenario: 5 V/3.3 V power rail conditioning in engine control unit exposed to load-dump transients. IC Role / Device Role / Timing Role: OR-ing diode between dual power sources (battery + backup capacitor) to prevent backfeed. Use Value: 175 °C Tj rating allows placement near MCU without thermal derating; 100% avalanche test ensures survival during 12 V line faults. | Use Scenario: Input protection for telematics module powered from vehicle battery with risk of reversed connection. IC Role / Device Role / Timing Role: Series-blocking diode preventing damage when battery terminals are swapped during service. Use Value: 2 A IF(AV) and low VF enable full-rated operation without voltage drop penalty; ECOPACK2 compliance ensures long-term reliability in humid under-dash environment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2H100S | SOD-123 package, same VF/IR specs, but not AEC-Q101 qualified; Rth(j-l) = 16 °C/W | Intended for industrial/commercial SMPS, not automotive underhood use | Select only if AEC-Q101 is not required and thermal margin permits 1 °C/W higher junction-to-lead resistance |
| ON Semiconductor NSS2H100MT1G | SOD-123, 100 V/2 A, VF = 0.65 V @ 125 °C, AEC-Q101 qualified, Rth(j-l) = 17 °C/W | Higher VF increases conduction loss by ~0.06 W at 2 A; slightly lower thermal performance | Acceptable where ST supply chain constraints exist, but verify thermal margin with 17 °C/W Rth(j-l) in layout |
Compared with STPS2H100S and NSS2H100MT1G, STPST2H100ZFY offers the lowest VF at high temperature and best thermal resistance in its class - critical for automotive ECU miniaturization and thermal reliability under sustained 125–150 °C ambient conditions.
Availability
STPST2H100ZFY is available at Aetrix Electronics and suitable for automotive LED lighting, flyback topology designs, and ECU power supply applications requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle support.
Supply support for STPST2H100ZFY 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 automotive, industrial, and consumer markets.
This device belongs to ST's automotive-grade power Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability DC/DC conversion in engine control, lighting, and body electronics systems.
FAQ
What is the maximum allowable PCB copper area to achieve Rth(j-a) ≤ 40 °C/W?
Per Figure 9 in DS14192, ≥2.0 cm² of 70 µm-thick copper per lead on FR4 board achieves Rth(j-a) ≈ 3.8 °C/W for SOD123Flat. With 1.0 cm², Rth(j-a) rises to ~4.5 °C/W - still well below 40 °C/W. No minimum copper area is needed to meet that target; even standard 0.5 cm² pads yield Rth(j-a) < 25 °C/W.
Does STPST2H100ZFY support synchronous rectification?
No - it is a passive Schottky rectifier, not a MOSFET-based synchronous device. It operates as a unidirectional freewheeling or OR-ing diode with zero gate drive requirement. For synchronous designs, ST offers dedicated SR controllers like STSR3.
Is the 3 A IAS rating usable for repetitive avalanche operation?
No - IAS is a single-pulse, non-repetitive rating per JEDEC JESD24-11. Repetitive inductive switching must stay within SOA limits defined by peak IF, di/dt, and thermal constraints. Continuous avalanche is not supported.
How does the SOD123Flat package compare thermally to SOD128Flat for this part?
SOD123Flat has Rth(j-l) = 15 °C/W vs. 14 °C/W for SOD128Flat - a marginal 1 °C/W difference. However, SOD128Flat's larger footprint (4.7 mm width) improves Rth(j-a) at high copper area, while SOD123Flat saves 40% board area - making thermal choice application-dependent, not absolute.
STPST2H100ZFY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 805 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2.7 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -40°C ~ 175°C
STPST2H100ZFY FAQ
1.How can I place an order for STPST2H100ZFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST2H100ZFY 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 STPST2H100ZFY reliable?
The price and inventory of STPST2H100ZFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST2H100ZFY is usually 5 days.
3.What payment methods are accepted for STPST2H100ZFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST2H100ZFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST2H100ZFY?
STPST2H100ZFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST2H100ZFY 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 STPST2H100ZFY?
For technical support, including STPST2H100ZFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST2H100ZFY requirements.
6.How does Aetrix verify that STPST2H100ZFY is sourced from the original manufacturer or authorized distributors?
All STPST2H100ZFY 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 STPST2H100ZFY meets industry standards.
7.What is the process for return or replacement of STPST2H100ZFY?
All STPST2H100ZFY units undergo pre-shipment inspection (PSI). If there is an issue with STPST2H100ZFY, 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 STPST2H100ZFY part is unused and in its original packaging.
Return procedure for STPST2H100ZFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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