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STMicroelectronics STTH3L06UFY
- Part No.:
- STTH3L06UFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- DO-221AA, SMB Flat Leads
- Datasheet:
-
STTH3L06UFY.pdf
- Description:
- DIODE GEN PURP 600V 3A SMBFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:10,284
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Product details
Overview
STTH3L06UFY from STMicroelectronics is an AEC-Q101-qualified ultrafast recovery power rectifier in SMB Flat package, designed for clamping in automotive energy recovery circuits. It delivers 3 A average forward current, 600 V repetitive peak reverse voltage, 50 ns typical reverse recovery time, 0.9 V typical forward voltage at 150 °C, and operates up to 175 °C junction temperature - enabling robust performance in high-temperature engine bay applications.
For engineers reviewing the STTH3L06UFY datasheet, STTH3L06UFY pinout, STTH3L06UFY application, or STTH3L06UFY equivalent, key selection criteria include ultrafast trr (50 ns), low VF at elevated Tj, AEC-Q101 qualification, surge capability (30 A IFSM), and wettable-flank SMB Flat packaging for automated optical inspection and solder joint reliability.
Technical Context
This diode employs a planar epitaxial silicon structure optimized for fast soft recovery, minimizing voltage overshoot and EMI during switching transitions in flyback and clamp snubber topologies. Its 50 ns trr at 25 °C (with dIF/dt = –50 A/µs) and softness factor >1.0 reduce ringing and stress on adjacent MOSFETs.
The device features a low Rth(j-l) of 16 °C/W and thermal stability across –40 to +175 °C operating range, with VRRM guaranteed over full temperature span. Reverse leakage remains ≤100 µA at 125 °C, supporting reliable operation in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - supports 400 V DC bus designs with 50% safety margin against transients |
| IF(AV) | 3 A at TL = 110 °C - enables compact heatsinking in space-constrained modules |
| Trr (typ.) | 50 ns - reduces switching losses and EMI in 100–500 kHz energy recovery stages |
| VF (typ.) | 0.9 V at IF = 3 A, Tj = 150 °C - lowers conduction loss vs. standard fast rectifiers |
| IFSM | 30 A (tp = 10 ms) - withstands load dump and cranking surge events in 12 V systems |
| Tj (max.) | 175 °C - qualified for under-hood placement without derating in modern EV/HEV power stages |
| Rth(j-l) | 16 °C/W - allows direct lead-to-PCB thermal path without external heatsink |
Pinout & Package
SMB Flat package: surface-mount, dual-leaded, wettable flank profile (JEDEC MO-213AA), epoxy UL94 V0, lead-free, 50 mg unit weight. Dimensions: D = 3.30–3.95 mm, E = 5.10–5.60 mm, L = 0.75–1.50 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to switched node (e.g., MOSFET drain) in clamp circuit |
| Cathode | Forward current exit / reverse blocking terminal | Connected to rail (e.g., input capacitor positive) - carries recovered energy |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications per stress test requirements |
| Ultrafast soft recovery | trr = 50 ns with softness factor >1.0 - suppresses voltage spikes and EMI in snubbers |
| High surge capability | 30 A IFSM - survives ISO 7637-2 pulse 5a/b load dump without failure |
| Wettable flank leads | SMB Flat package with side-wettable terminations - enables AOI-compatible solder joint inspection |
| High-temperature operation | Guaranteed VRRM and IR performance from –40 to +175 °C - no derating needed |
Applications
| Engine Start-Stop Clamping | On-Board Charger (OBC) Snubber |
|---|---|
Use Scenario: Suppresses voltage spikes during MOSFET turn-off in 12 V start-stop system boost converters. IC Role / Device Role / Timing Role: Ultrafast clamp diode in RCD snubber network - recovers stored inductive energy. Use Value: 50 ns trr and soft recovery minimize overshoot beyond 600 V rating, protecting 650 V Si MOSFETs. | Use Scenario: Absorbs leakage inductance energy in OBC LLC resonant converter primary side. IC Role / Device Role / Timing Role: Clamp diode in active clamp or passive snubber - conducts only during brief recovery window. Use Value: Low VF (0.9 V @ 150 °C) reduces average conduction loss by ~18% vs. legacy 1.15 V diodes. |
| EV Battery Management System (BMS) Precharge | Automotive DC-DC Converter Flyback Clamp |
Use Scenario: Limits inrush current and voltage transient during high-voltage battery precharge sequencing. IC Role / Device Role / Timing Role: Fast-recovery diode in precharge discharge path - blocks reverse current while absorbing switching energy. Use Value: 175 °C Tj max and AEC-Q101 rating ensure reliability during repeated hot-cycle precharge events. | Use Scenario: Clamps reflected flyback voltage in 48 V–12 V isolated DC-DC converters for ADAS ECUs. IC Role / Device Role / Timing Role: Energy recovery diode in secondary-side clamp circuit - handles repetitive 3 A pulses at 200 kHz. Use Value: 3 A IF(AV) and 16 °C/W Rth(j-l) allow direct PCB copper cooling without thermal vias or pads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | Same die, SMB package without wettable flanks; Rth(j-l) = 18 °C/W | Lacks AOI compatibility; slightly higher thermal resistance | Select when cost sensitivity outweighs automated inspection requirement |
| VS-3EYH06-M3/45 | Vishay part: 3 A/600 V, trr = 65 ns (typ.), VF = 0.95 V @ 150 °C, DO-214AC | DO-214AC (SMA) package - larger footprint, no wettable flanks | Choose if board layout uses SMA footprint or requires Vishay supply chain alignment |
Compared with STTH3L06S and VS-3EYH06-M3/45, STTH3L06UFY uniquely combines AEC-Q101, wettable SMB Flat, 50 ns trr, and 16 °C/W thermal resistance - making it optimal for next-gen automotive power modules requiring AOI, high density, and thermal efficiency.
Availability
STTH3L06UFY is available at Aetrix Electronics and suitable for engine control units, on-board chargers, battery management systems, and automotive DC-DC converters requiring stable component supply across extended temperature and lifetime requirements.
Supply support for STTH3L06UFY 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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
STTH3L06UFY belongs to ST's Turbo 2 ultrafast rectifier product line - engineered specifically for high-efficiency, high-reliability energy recovery in automotive power conversion systems.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The STTH3L06UFY is rated for continuous operation up to 175 °C junction temperature, with all electrical parameters-including VRRM and IR-guaranteed across the full –40 to +175 °C range. This eliminates derating in under-hood applications where ambient temperatures exceed 125 °C.
Does STTH3L06UFY support automated optical inspection (AOI)?
Yes. The SMB Flat package features wettable flank leads, enabling reliable side-view solder joint inspection using standard AOI systems. This meets IPC-A-610 Class 3 requirements for automotive electronics assembly verification.
How does its reverse recovery behavior compare to standard fast recovery diodes?
With 50 ns typical trr and a softness factor >1.0, STTH3L06UFY exhibits significantly faster and softer recovery than standard fast diodes (typically 100–200 ns, hard recovery). This reduces voltage overshoot, EMI generation, and stress on switching MOSFETs in clamp and snubber circuits.
Is this diode suitable for use in non-automotive industrial power supplies?
Yes. While AEC-Q101 qualified, STTH3L06UFY's 175 °C rating, 600 V VRRM, and ultrafast recovery make it equally suitable for industrial SMPS, UPS, and motor drives where high reliability, thermal resilience, and low switching loss are critical.
STTH3L06UFY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- DO-221AA, SMB Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 70 ns
- Current - Reverse Leakage @ Vr:
- 3 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMBflat
- Operating Temperature - Junction:
- -40°C ~ 175°C
STTH3L06UFY FAQ
1.How can I place an order for STTH3L06UFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH3L06UFY 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 STTH3L06UFY reliable?
The price and inventory of STTH3L06UFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH3L06UFY is usually 5 days.
3.What payment methods are accepted for STTH3L06UFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH3L06UFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH3L06UFY?
STTH3L06UFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH3L06UFY 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 STTH3L06UFY?
For technical support, including STTH3L06UFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH3L06UFY requirements.
6.How does Aetrix verify that STTH3L06UFY is sourced from the original manufacturer or authorized distributors?
All STTH3L06UFY 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 STTH3L06UFY meets industry standards.
7.What is the process for return or replacement of STTH3L06UFY?
All STTH3L06UFY units undergo pre-shipment inspection (PSI). If there is an issue with STTH3L06UFY, 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 STTH3L06UFY part is unused and in its original packaging.
Return procedure for STTH3L06UFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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