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STMicroelectronics STTH1R02ZFY
- Part No.:
- STTH1R02ZFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
STTH1R02ZFY.pdf
- Description:
- DIODE GEN PURP 200V 1A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:21,961
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Product details
Overview
STTH1R02ZFY from STMicroelectronics is an AEC-Q101-qualified ultrafast recovery rectifier in SOD123Flat package, designed specifically for reverse battery protection in automotive systems. It delivers 1 A average forward current, 200 V repetitive peak reverse voltage, 25 ns typical reverse recovery time at 25 °C, 0.75 V typical forward voltage at 125 °C, and operates up to 175 °C junction temperature.
For engineers reviewing the STTH1R02ZFY datasheet, STTH1R02ZFY pinout, STTH1R02ZFY application, or STTH1R02ZFY equivalent, key selection criteria include reverse recovery softness (S-factor), conduction loss optimization (VF vs. trr trade-off), thermal resistance (23 °C/W junction-to-lead), and PPAP-capable qualification for automotive production use.
Technical Context
This device implements a planar silicon PN-junction ultrafast rectifier architecture optimized for low-loss energy recovery in 12 V/24 V automotive power networks. Its dynamic performance is characterized by tightly controlled reverse recovery charge (34 nC) and low peak reverse recovery current (2.2 A) under high dIF/dt (100 A/µs) at 125 °C.
The SOD123Flat package enables direct PCB conduction cooling with 23 °C/W junction-to-lead thermal resistance, supporting high-reliability operation across -40 to +175 °C ambient without derating constraints typical of standard SOD-123 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 1 A - supports continuous forward current in reverse polarity protection circuits without heatsink |
| VRRM | 200 V - withstands load dump transients up to ISO 7637-2 Pulse 5a in 24 V systems |
| trr (typ.) | 25 ns at 25 °C - minimizes switching losses during fast polarity reversal events |
| VF (typ.) | 0.75 V at 125 °C - reduces conduction loss and self-heating in high-temperature engine bay locations |
| Rth(j-l) | 23 °C/W - enables direct thermal path to PCB copper, critical for space-constrained automotive modules |
| Qrr | 34 nC - limits EMI generation and voltage overshoot during diode turn-off in DC/DC converters |
Pinout & Package
SOD123Flat surface-mount package with cathode (K) and anode (A) terminals; compact 2.6 mm × 1.6 mm footprint, 0.98 mm height, and integrated thermal pad for conduction cooling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A (Anode) | Forward current entry point | Connected to battery positive in reverse polarity protection; must handle 25 A surge (IFSM) |
| K (Cathode) | Forward current exit / reverse blocking terminal | Connected to system input; blocks 200 V reverse voltage while maintaining <0.5 µA leakage at 25 °C |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47 |
| PPAP capable | Supplied with full Production Part Approval Process documentation for Tier-1 OEM integration |
| ECOPACK®2 compliant | Halogen-free, RoHS-compliant epoxy with UL94 V0 flammability rating |
| Low trr/VF compromise | Optimized 25 ns recovery time with 0.75 V VF at 125 °C enables efficient energy recovery without excessive heat buildup |
Applications
| Reverse Battery Protection | Start-Stop System Rectification |
|---|---|
Use Scenario: Prevents damage to vehicle electronics when battery terminals are accidentally reversed during jump-start or replacement. IC Role / Device Role / Timing Role: Ultrafast unidirectional conduction switch that blocks reverse polarity while passing forward current with minimal voltage drop. Use Value: Eliminates need for bulky fuses or MOSFET-based protection due to robust 200 V reverse blocking and 25 A surge capability. | Use Scenario: Recovers regenerative braking energy and maintains stable 12 V rail during engine cranking in micro-hybrid vehicles. IC Role / Device Role / Timing Role: High-efficiency rectifier in synchronous buck-derived energy recovery paths with fast transient response. Use Value: 34 nC Qrr and 25 ns trr reduce switching node ringing and EMI, enabling smaller input filters and higher-frequency operation. |
| On-Board Charger Input Stage | Automotive Lighting Power Supply |
Use Scenario: Front-end rectification in bidirectional AC/DC converters used in EV/PHEV on-board chargers. IC Role / Device Role / Timing Role: Reverse-blocking element in active clamp or auxiliary winding recovery circuits operating at elevated ambient temperatures. Use Value: 175 °C max junction temperature and guaranteed VRRM across -40 to +175 °C ensure stable operation inside sealed charger enclosures. | Use Scenario: Input rectification and reverse polarity safeguard for LED headlamp drivers exposed to under-hood thermal stress. IC Role / Device Role / Timing Role: Primary protection diode placed between battery feed and DC/DC controller IC input. Use Value: 0.75 V VF at 125 °C minimizes power loss and thermal rise in thermally constrained lamp housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L02ZFY | Lower IF(AV) = 0.5 A; identical VRRM, trr, and package | Not suitable for 1 A continuous reverse protection; limited to low-power lighting or sensor modules | Select only if average current demand is ≤0.5 A and space/thermal budget allows same footprint |
| VS-1EWH02-M3/5AT | Higher VF (0.92 V typ. @125 °C); same trr (25 ns), VRRM (200 V), and SOD123Flat package | Higher conduction loss increases thermal stress in high-duty-cycle applications | Acceptable where lower cost outweighs 0.17 V VF penalty and thermal margin exists |
Compared with STTH1L02ZFY and VS-1EWH02-M3/5AT, STTH1R02ZFY uniquely balances 1 A current handling, 0.75 V VF at 125 °C, and 25 ns trr in an AEC-Q101-qualified SOD123Flat package-making it the only option meeting full reverse battery protection requirements in modern 12 V/24 V automotive ECUs.
Availability
STTH1R02ZFY is available at Aetrix Electronics and suitable for reverse battery protection, start-stop energy recovery, on-board charger input stages, and automotive LED driver power supplies requiring stable component supply across automotive production lifecycles.
Supply support for STTH1R02ZFY 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The STTH ultrafast rectifier product line targets automotive power integrity applications, emphasizing AEC-Q101 reliability, thermal robustness, and dynamic performance for reverse polarity protection and energy recovery circuits.
FAQ
What is the maximum allowable PCB copper area for optimal thermal performance?
The datasheet specifies thermal resistance junction-to-ambient versus copper surface area under each tab, with Rth(j-a) dropping to ~50 °C/W at 4 cm². For reliable 1 A continuous operation at 125 °C ambient, ≥2.5 cm² of 35 µm-thick FR4 copper per terminal is recommended to maintain junction temperature below 175 °C.
Does STTH1R02ZFY support automated optical inspection (AOI) after reflow?
Yes-the SOD123Flat package has defined solder joint geometry and marking "1Y2" with high-contrast laser etching, fully compatible with standard AOI systems. The flat top surface and consistent coplanarity (≤0.1 mm) enable reliable solder paste volume and alignment verification per IPC-A-610 Class 3 requirements.
How does the softness factor (S-factor) impact EMI in automotive CAN/LIN networks?
With S-factor >0.6 across 100–500 A/µs dIF/dt range, STTH1R02ZFY exhibits soft reverse recovery that suppresses high-frequency current spikes. This directly reduces common-mode noise coupling into adjacent CAN/LIN traces, lowering radiated emissions by up to 8 dBµV/m in 30–100 MHz band compared to standard fast rectifiers.
Can STTH1R02ZFY be used in parallel configurations for higher current handling?
No-parallel operation is not recommended due to inherent forward voltage mismatch (±0.1 V tolerance) causing current imbalance. At 125 °C, even 5% VF mismatch results in >70% of total current flowing through the lower-VF unit, risking thermal runaway. Use a single higher-current rated device instead.
STTH1R02ZFY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 32 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 200 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
STTH1R02ZFY FAQ
1.How can I place an order for STTH1R02ZFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH1R02ZFY 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 STTH1R02ZFY reliable?
The price and inventory of STTH1R02ZFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1R02ZFY is usually 5 days.
3.What payment methods are accepted for STTH1R02ZFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1R02ZFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH1R02ZFY?
STTH1R02ZFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH1R02ZFY 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 STTH1R02ZFY?
For technical support, including STTH1R02ZFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1R02ZFY requirements.
6.How does Aetrix verify that STTH1R02ZFY is sourced from the original manufacturer or authorized distributors?
All STTH1R02ZFY 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 STTH1R02ZFY meets industry standards.
7.What is the process for return or replacement of STTH1R02ZFY?
All STTH1R02ZFY units undergo pre-shipment inspection (PSI). If there is an issue with STTH1R02ZFY, 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 STTH1R02ZFY part is unused and in its original packaging.
Return procedure for STTH1R02ZFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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