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STMicroelectronics STPS2H100ZFY
- Part No.:
- STPS2H100ZFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
STPS2H100ZFY.pdf
- Description:
- DIODE SCHOTTKY 100V 2A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:95,809
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Product details
Overview
STPS2H100ZFY from STMicroelectronics is an AEC-Q101-qualified automotive Schottky rectifier in SOD123Flat package, rated for 100 V repetitive peak reverse voltage and 2 A average forward current, with typical forward voltage of 0.65 V at 125 °C and 2 A, used in diesel injection control units for reverse polarity protection.
For engineers reviewing the STPS2H100ZFY datasheet, STPS2H100ZFY pinout, STPS2H100ZFY application, or STPS2H100ZFY equivalent, key selection criteria include junction temperature capability up to 175 °C, low leakage (≤0.5 mA at 125 °C), avalanche power rating (105 W at 10 µs), thermal resistance junction-to-lead (20 °C/W), and ECOPACK®2 compliance for automotive production.
Technical Context
This Schottky rectifier operates as a unidirectional power switching device with negligible switching losses and specified avalanche capability-enabling robust transient energy handling without external snubbers. Its low VF and high Tj(max) = 175 °C support high-efficiency, thermally constrained automotive DC/DC converters.
Designed for surface mounting in SOD123Flat, it delivers stable conduction performance across -40 °C to +175 °C ambient, with thermal impedance optimized for conduction-cooled PCB layouts using copper pads under each lead per Figure 8.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports 24 V automotive systems with ≥4× safety margin against load dump transients |
| IF(AV) | 2 A - continuous DC output current capability at TL = 140 °C with 0.5 duty cycle square wave |
| VF (typ.) | 0.65 V @ 125 °C, 2 A - reduces conduction loss to ~1.3 W in typical engine control applications |
| Tj (max.) | 175 °C - enables operation adjacent to hot engine compartments without derating |
| IR (max.) | 0.5 mA @ 125 °C, VR = VRRM - minimizes standby power loss in always-on vehicle modules |
| Rth(j-l) | 20 °C/W - defines thermal path efficiency from die to PCB copper land, critical for thermal design validation |
| PARM | 105 W @ 10 µs, Tj = 125 °C - quantifies single-pulse avalanche energy handling for ISO 7637-2 pulse 5a protection |
Pinout & Package
SOD123Flat is a surface-mount, two-terminal plastic package with exposed cathode and anode leads on a flat, low-profile body (3.5 mm × 1.6 mm × 0.9 mm). It features UL94 V0 epoxy and conduction-based cooling via PCB copper pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to input rail (e.g., battery+); must be routed with adequate copper area for thermal dissipation |
| Cathode (K) | Forward current exit / reverse blocking terminal | Connected to load ground or switching node; serves as primary heat-sinking interface to PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47 |
| Negligible switching losses | Enables >95% efficiency in 100–500 kHz buck converters without reverse recovery penalty |
| Avalanche capability (105 W @ 10 µs) | Eliminates need for external TVS in reverse-battery protection circuits meeting ISO 16750-2 |
| ECOPACK®2 compliance | Meets RoHS, halogen-free, and material declaration requirements for Tier-1 automotive supply chains |
| PPAP capable | Supplied with full Production Part Approval Process documentation for OEM launch readiness |
Applications
| LED Headlamp Driver | Diesel Injector Control |
|---|---|
Use Scenario: High-side switch in constant-current LED driver for adaptive front lighting systems. IC Role / Device Role / Timing Role: Reverse polarity protection diode placed between battery input and DC/DC controller IC. Use Value: Prevents damage during jump-start misconnection while maintaining <0.7 V drop at 2 A to avoid thermal runaway in sealed headlamp housing. | Use Scenario: Freewheeling path for solenoid coil in high-pressure common rail diesel injector. IC Role / Device Role / Timing Role: Snubberless flyback diode absorbing inductive kickback during MOSFET turn-off. Use Value: Avalanche-rated 105 W pulse handling eliminates need for external clamping, reducing BOM count and PCB area in space-constrained ECU modules. |
| Engine Control Unit (ECU) | 12 V/24 V Dual-Battery Interface |
Use Scenario: Input rectification and overvoltage clamping in microcontroller power supply stage. IC Role / Device Role / Timing Role: Primary reverse-battery protection element upstream of LDO regulators. Use Value: Withstands 175 °C junction temperature and ≤0.5 mA leakage at 125 °C, ensuring long-term stability in under-hood ECU environments. | Use Scenario: Isolation diode enabling automatic power source selection between starter battery and auxiliary AGM battery. IC Role / Device Role / Timing Role: Unidirectional power path manager preventing backfeed and enabling seamless switchover. Use Value: Low 0.65 V VF at elevated temperature minimizes voltage drop and heat generation during sustained 2 A load sharing, improving system efficiency by ~1.3 W vs. standard silicon diodes. |
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 NSS2H100MT1G | Same SOD123FL package, VRRM = 100 V, IF(AV) = 2 A, VF = 0.75 V @ 125 °C - 100 mV higher typical forward drop | Approved for non-automotive industrial use only; lacks AEC-Q101 qualification and PPAP support | Select when cost sensitivity outweighs automotive qualification requirements and thermal margin permits higher VF |
| Vishay VS-2EY100-M3/54 | SOD123FL package, VRRM = 100 V, IF(AV) = 2 A, VF = 0.72 V @ 125 °C, Tj(max) = 150 °C - 25 °C lower max junction temperature | Not AEC-Q101 qualified; no avalanche rating published; not PPAP-capable | Acceptable for non-critical 12 V accessory circuits where ambient temperature remains <105 °C and transient immunity is externally managed |
Compared with NSS2H100MT1G and VS-2EY100-M3/54, STPS2H100ZFY uniquely combines AEC-Q101 qualification, 175 °C junction rating, and 105 W avalanche capability-making it the only option qualified for under-hood diesel injector and ECU power rail protection without supplemental clamping.
Availability
STPS2H100ZFY is available at Aetrix Electronics and suitable for automotive lighting systems, diesel fuel injection modules, and engine control units requiring stable component supply across extended product lifecycles.
Supply support for STPS2H100ZFY 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, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.
STPS2H100ZFY belongs to ST's automotive-qualified Schottky rectifier product line, engineered specifically for high-reliability reverse polarity protection and freewheeling in harsh-temperature engine bay applications.
FAQ
What is the maximum surge current rating for STPS2H100ZFY?
The STPS2H100ZFY has a non-repetitive surge forward current (IFSM) rating of 50 A for a 10 ms sinusoidal pulse at 25 °C. This value decreases with increasing junction temperature and must be verified against thermal limits using the Rth(j-l) = 20 °C/W parameter and actual board layout.
Is STPS2H100ZFY suitable for synchronous rectification?
No. STPS2H100ZFY is a passive Schottky rectifier and lacks gate control or bidirectional conduction capability required for synchronous rectification. It functions only as a unidirectional freewheeling or reverse-blocking diode in conventional topologies.
Does STPS2H100ZFY require a heatsink in typical automotive applications?
No external heatsink is required. The SOD123Flat package relies on conduction cooling through PCB copper pads. With ≥1 cm² of 35 µm copper per lead (per Figure 8), it achieves Rth(j-a) ≈ 60 °C/W, sufficient for 2 A continuous operation at Tamb ≤ 85 °C without additional thermal hardware.
How does the avalanche rating translate to real-world circuit protection?
The 105 W avalanche rating at 10 µs (Tj = 125 °C) corresponds to 1.05 J of single-pulse energy absorption. This protects against ISO 7637-2 Pulse 5a (load dump) transients up to 100 V × 10.5 A for 10 µs, eliminating need for parallel TVS diodes in many ECU power inputs.
STPS2H100ZFY 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:
- 960 mV @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 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
STPS2H100ZFY FAQ
1.How can I place an order for STPS2H100ZFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS2H100ZFY 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 STPS2H100ZFY reliable?
The price and inventory of STPS2H100ZFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS2H100ZFY is usually 5 days.
3.What payment methods are accepted for STPS2H100ZFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS2H100ZFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS2H100ZFY?
STPS2H100ZFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS2H100ZFY 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 STPS2H100ZFY?
For technical support, including STPS2H100ZFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS2H100ZFY requirements.
6.How does Aetrix verify that STPS2H100ZFY is sourced from the original manufacturer or authorized distributors?
All STPS2H100ZFY 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 STPS2H100ZFY meets industry standards.
7.What is the process for return or replacement of STPS2H100ZFY?
All STPS2H100ZFY units undergo pre-shipment inspection (PSI). If there is an issue with STPS2H100ZFY, 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 STPS2H100ZFY part is unused and in its original packaging.
Return procedure for STPS2H100ZFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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