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STMicroelectronics STTH3R02AFY
- Part No.:
- STTH3R02AFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
STTH3R02AFY.pdf
- Description:
- DIODE GP 200V 3A SOD128FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,065
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Product details
Overview
STTH3R02AFY from STMicroelectronics is an automotive-grade ultrafast silicon rectifier diode in SOD128Flat package, rated for 200 V repetitive peak reverse voltage (VRRM), 3 A average forward current (IF(AV)), and 16 ns typical reverse recovery time (trr) at 25 °C. It serves as a free-wheeling or base-drive diode in high-frequency switching power supplies and transistor circuits within engine control units and body electronics.
For engineers reviewing the STTH3R02AFY datasheet, STTH3R02AFY pinout, STTH3R02AFY application, or STTH3R02AFY equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C maximum junction temperature, low 0.72 V typical forward voltage at 150 °C, and negligible switching losses enabled by ultrafast recovery performance.
Technical Context
The STTH3R02AFY employs ST's planar 200 V technology optimized for minimal conduction and switching losses in automotive SMPS and motor drive snubbing. Its dynamic behavior is characterized by trr = 16–24 ns across operating conditions and QRR = 50 nC at 125 °C, enabling efficient operation at high dIF/dt rates up to 200 A/µs.
Thermal design is supported by Rth(j-l) = 15–23 °C/W and operation over -40 to +175 °C ambient, with IR ≤ 16 µA at 125 °C and VR = VRRM. The device exhibits VF = 0.72–1.02 V across temperature and load, ensuring stable forward conduction under transient thermal stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; enables use in 12 V/24 V automotive systems with 100 V+ transients. |
| IF(AV) | 3 A - Average forward current with square-wave waveform and lead temperature TL = 109 °C; defines continuous DC output capability. |
| trr (typ) | 16 ns - Typical reverse recovery time at IF = 1 A, dIF/dt = -100 A/µs, VR = 30 V; minimizes switching loss in >100 kHz converters. |
| VF (typ) | 0.72 V - Forward voltage at IF = 3 A and Tj = 150 °C; reduces conduction loss and thermal stress in high-temp environments. |
| Tj (max) | 175 °C - Maximum junction temperature; supports under-hood placement without derating in AEC-Q101-compliant designs. |
| Rth(j-l) | 15 °C/W (typ) - Junction-to-lead thermal resistance; enables direct PCB copper pad heatsinking without external heatsink. |
| QRR | 50 nC - Reverse recovery charge at IF = 3 A, dIF/dt = -200 A/µs, VR = 160 V; determines EMI generation and snubber sizing. |
Pinout & Package
The STTH3R02AFY is housed in a surface-mount SOD128Flat package (JEDEC MO-203AA), featuring two terminals: anode and cathode, with epoxy molding meeting UL94 V0 and lead-free compliance per ECOPACK®2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to switching node (e.g., MOSFET drain); must withstand surge current IFSM = 80 A (8.3 ms sine). |
| Cathode | Forward current exit / reverse blocking terminal | Connected to ground or low-side return path; blocks 200 V reverse during flyback or commutation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive reliability including temperature cycling, HTRB, and ESD; eliminates qualification overhead for Tier 1 suppliers. |
| Ultrafast trr ≤ 24 ns | Enables >200 kHz switching in DC-DC converters without significant turn-off loss or voltage overshoot. |
| Low VF = 0.72 V @ 150 °C | Reduces forward power dissipation by ~25% vs. standard fast diodes at elevated temperatures, improving thermal margin. |
| Rth(j-l) = 15 °C/W (typ) | Allows direct thermal coupling to PCB copper; achieves 175 °C Tj with <1 W dissipation on 100 mm² 2 oz Cu pad. |
| ECOPACK®2 compliant | Meets RoHS, REACH, and halogen-free requirements; supports global automotive OEM environmental mandates. |
Applications
| Engine Control Unit (ECU) Power Stage | Automotive LED Driver Supply |
|---|---|
Use Scenario: Free-wheeling path for high-side N-channel MOSFETs driving solenoids and fuel injectors in 12 V/24 V ECU power stages. IC Role / Device Role / Timing Role: Ultrafast recovery diode clamping inductive kickback during MOSFET turn-off; operates at 20–50 kHz PWM frequencies. Use Value: 16 ns trr limits voltage overshoot to <35 V, preventing MOSFET avalanche stress and reducing snubber capacitor size by 40%. | Use Scenario: Output rectification in buck-derived constant-current LED drivers for headlamps and DRLs. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in secondary-side rectification; handles 3 A average load with 100 kHz switching. Use Value: 0.72 V VF at 150 °C maintains >92% efficiency at full load and under-hood temperatures, minimizing thermal derating. |
| Body Control Module (BCM) DC-DC Converter | Electric Power Steering (EPS) Gate Drive |
Use Scenario: Secondary-side rectifier in isolated flyback converters supplying 5 V/3.3 V logic rails in BCMs. IC Role / Device Role / Timing Role: Fast-recovery diode conducting continuous 2–3 A output with minimal reverse recovery noise. Use Value: QRR = 50 nC reduces EMI filter component count and ensures CISPR-25 Class 5 compliance without added ferrites. | Use Scenario: Base-drive clamp diode for high-speed gate drivers controlling EPS motor H-bridge IGBTs/MOSFETs. IC Role / Device Role / Timing Role: Low-loss, high-Tj rectifier protecting driver ICs from negative voltage transients during gate turn-off. Use Value: 175 °C Tj rating allows placement adjacent to gate driver ICs without thermal isolation, simplifying layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR320SFT1G | VRRM = 200 V, IF(AV) = 3 A, trr = 35 ns (typ), VF = 0.95 V @ 150 °C, Rth(j-l) = 20 °C/W | Higher trr and VF increase switching loss and thermal load; not AEC-Q101 qualified | Acceptable for non-automotive industrial SMPS where qualification is not required |
| Vishay VS-3EY20-M3/54 | VRRM = 200 V, IF(AV) = 3 A, trr = 25 ns (typ), VF = 0.85 V @ 150 °C, AEC-Q101 qualified, Rth(j-l) = 18 °C/W | Slower recovery and higher VF reduce efficiency in high-frequency (>150 kHz) designs | Suitable for cost-sensitive automotive applications where 25 ns trr meets system timing budget |
Compared with MUR320SFT1G and VS-3EY20-M3/54, the STTH3R02AFY delivers the lowest trr (16 ns) and VF (0.72 V) at 150 °C among AEC-Q101 ultrafast rectifiers in SOD128Flat, enabling higher efficiency and smaller passive components in thermally constrained automotive power stages.
Availability
STTH3R02AFY is available at Aetrix Electronics and suitable for engine control units, automotive LED drivers, and electric power steering systems requiring stable component supply and long-term automotive lifecycle support.
Supply support for STTH3R02AFY 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.
The STTH3R02AFY belongs to ST's automotive ultrafast rectifier product line, engineered specifically for high-reliability, high-efficiency power conversion in under-hood and safety-critical vehicle subsystems.
FAQ
Is the STTH3R02AFY pin-compatible with other SOD128Flat rectifiers?
Yes - the STTH3R02AFY uses the standard SOD128Flat footprint defined in JEDEC MO-203AA, with identical pad layout and terminal polarity (anode/cathode orientation) as MUR320SFT1G and VS-3EY20-M3/54. Mechanical compatibility is confirmed by ST's Figure 12 footprint drawing and dimensional table.
What is the maximum allowable surge current for STTH3R02AFY?
The STTH3R02AFY supports a non-repetitive forward surge current (IFSM) of 80 A for 8.3 ms (sinusoidal waveform) at Tj = 25 °C, as specified in Table 2 of the datasheet. Derating applies above 25 °C ambient, with IFSM decreasing linearly to ~55 A at 125 °C junction temperature.
Does STTH3R02AFY require a heatsink in typical automotive applications?
No - with Rth(j-l) = 15 °C/W (typ), the device dissipates <0.8 W at 3 A and 150 °C junction temperature. When mounted on ≥100 mm² of 2 oz copper, it achieves thermal equilibrium below 175 °C without external heatsinking, per Figure 10 thermal resistance data.
How does the STTH3R02AFY meet PPAP requirements for automotive production?
The STTH3R02AFY is PPAP capable per ST's internal process documentation (DocID027545 Rev 1), with full AEC-Q101 test reports, process flow validation, and statistical process control (SPC) data available upon request. ST provides certified PPAP Level 3 documentation packages for qualified customers.
STTH3R02AFY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.02 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 21 ns
- Current - Reverse Leakage @ Vr:
- 1.6 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD128Flat
- Operating Temperature - Junction:
- -40°C ~ 175°C
STTH3R02AFY FAQ
1.How can I place an order for STTH3R02AFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH3R02AFY 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 STTH3R02AFY reliable?
The price and inventory of STTH3R02AFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH3R02AFY is usually 5 days.
3.What payment methods are accepted for STTH3R02AFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH3R02AFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH3R02AFY?
STTH3R02AFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH3R02AFY 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 STTH3R02AFY?
For technical support, including STTH3R02AFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH3R02AFY requirements.
6.How does Aetrix verify that STTH3R02AFY is sourced from the original manufacturer or authorized distributors?
All STTH3R02AFY 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 STTH3R02AFY meets industry standards.
7.What is the process for return or replacement of STTH3R02AFY?
All STTH3R02AFY units undergo pre-shipment inspection (PSI). If there is an issue with STTH3R02AFY, 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 STTH3R02AFY part is unused and in its original packaging.
Return procedure for STTH3R02AFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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