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STMicroelectronics STTH1R06UFY
- Part No.:
- STTH1R06UFY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- DO-221AA, SMB Flat Leads
- Datasheet:
-
STTH1R06UFY.pdf
- Description:
- DIODE GEN PURP 600V 1A SMBFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:974
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Product details
Overview
STTH1R06UFY 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 1 A average forward current, 600 V repetitive peak reverse voltage, 30 ns typical reverse recovery time, 1.1 V typical forward voltage at 150 °C, and operates up to 175 °C junction temperature - enabling compact, high-efficiency regenerative braking and DC-DC flyback snubbing.
For engineers reviewing the STTH1R06UFY datasheet, STTH1R06UFY pinout, STTH1R06UFY application, or STTH1R06UFY equivalent, key selection criteria include ultrafast trr (30 ns typ.), low VF at high Tj (1.1 V @ 150 °C), surge robustness (17 A IFSM), thermal performance (Rth(j-l) = 21 °C/W), and wettable-flank SMB Flat packaging for automated optical inspection.
Technical Context
This diode employs a planar epitaxial silicon structure optimized for low Qrr and soft recovery (S-factor > 3), minimizing EMI and voltage overshoot during high-dI/dt switching in automotive transients. Its 600 V VRRM rating is guaranteed across -40 to +175 °C, with leakage current capped at 75 µA at 125 °C.
The device uses a thermally enhanced SMB Flat package with wettable leads and 21 °C/W junction-to-lead thermal resistance, enabling direct PCB copper pad heat sinking without discrete heatsinks in space-constrained modules like on-board chargers and DC-DC converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - supports 400 V nominal bus systems with ≥50 % safety margin against transients in 48 V mild-hybrid architectures |
| IF(AV) | 1 A @ TL = 135 °C - enables continuous conduction mode operation in low-power auxiliary supplies and gate-drive clamp circuits |
| trr (typ.) | 30 ns - reduces switching losses and EMI in 100–500 kHz energy recovery topologies |
| VF (typ.) | 1.1 V @ Tj = 150 °C, IF = 1 A - lowers conduction loss by ~110 mW vs. standard fast rectifiers at elevated temperature |
| Rth(j-l) | 21 °C/W - allows direct thermal coupling to 10–20 mm² copper pads, eliminating need for external heatsink in SMB footprint |
| IFS M | 17 A @ tp = 10 ms - withstands load dump and jump-start surges per ISO 7637-2 without failure |
| Tj (max.) | 175 °C - meets under-hood ambient requirements for engine bay-mounted power modules |
Pinout & Package
SMB Flat package: surface-mount, single-diode configuration with two terminals (anode and cathode), wettable flank leads for solder joint inspection, epoxy body compliant with UL94 V0, lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to switched node (e.g., MOSFET drain) in clamp/flyback configurations; polarity-sensitive for correct energy routing |
| Cathode (K) | Forward current exit / reverse blocking terminal | Connected to rail or snubber capacitor; sustains 600 V reverse bias while blocking recovery current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock per stress test conditions |
| Ultrafast trr (30 ns typ.) | Enables high-frequency (>200 kHz) operation with minimal reverse recovery loss and reduced snubber sizing |
| Soft recovery (S-factor > 3) | Suppresses voltage ringing and EMI during turn-off, easing EMC filter design in safety-critical systems |
| Wettable flank leads | Supports automated optical inspection (AOI) of solder fillets on bottom-side terminations in double-sided reflow processes |
| ECOPACK3 compliance | Meets RoHS, REACH, and halogen-free requirements for global automotive supply chain traceability |
Applications
| Regenerative Braking Clamping | On-Board Charger (OBC) Snubber |
|---|---|
Use Scenario: Absorbs inductive kickback from motor phase windings during PWM-controlled deceleration in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Ultrafast clamp diode placed across motor winding or inverter leg to limit voltage spikes below 600 V. Use Value: Prevents IGBT/MOSFET overvoltage failure with 30 ns trr and 17 A surge capability, reducing system derating by 25 %. | Use Scenario: Suppresses voltage overshoot across primary-side switches in resonant LLC converters within bidirectional OBC modules. IC Role / Device Role / Timing Role: Fast-recovery snubber diode in RCD networks, operating at 200–350 kHz switching frequencies. Use Value: Low Qrr and soft recovery cut snubber loss by 35 % versus standard FRD, improving OBC efficiency from 94.2 % to 94.8 %. |
| DC-DC Converter Flyback Clamp | Engine Control Unit (ECU) Power Supply Protection |
Use Scenario: Clamps transformer leakage inductance energy in isolated 12 V → 5 V/3.3 V flyback supplies powering ADAS sensors. IC Role / Device Role / Timing Role: Secondary-side ultrafast rectifier with low VF to minimize conduction loss at 150 °C ambient. Use Value: 1.1 V VF at 150 °C reduces thermal rise by 8 °C vs. legacy 1.35 V diodes, extending lifetime in sealed ECU enclosures. | Use Scenario: Protects 5 V LDO inputs from backfeed and transient reversal during battery disconnect/reconnect events in engine management systems. IC Role / Device Role / Timing Role: Reverse-polarity and surge protection diode in input stage, rated for 175 °C junction operation. Use Value: 175 °C Tj rating ensures uninterrupted function during prolonged engine soak tests at 150 °C ambient, avoiding brownout resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06UFY | Lower IF(AV) = 0.75 A; identical VRRM, trr, and package; VF = 1.05 V @ 150 °C | Better suited for <0.75 A continuous loads where lower conduction loss is prioritized over surge margin | Select when thermal budget is tighter but surge immunity requirements are relaxed |
| VS-1EWH06FN-M3/45 | Same SMB Flat package; VRRM = 600 V; trr = 35 ns (typ.); VF = 1.25 V @ 150 °C; IFSM = 15 A | Higher VF increases conduction loss; lower IFSM reduces tolerance to ISO 7637-2 pulse 5a | Acceptable for non-safety-critical 12 V systems where cost is primary driver |
Compared with STTH1R06UFY, STTH1L06UFY trades 25 % lower average current for slightly better VF, while VS-1EWH06FN-M3/45 offers lower cost but sacrifices 12 % surge margin and adds 150 mV VF penalty at high temperature - making STTH1R06UFY optimal for AEC-Q101-compliant 48 V energy recovery where both speed and ruggedness are essential.
Availability
STTH1R06UFY is available at Aetrix Electronics and suitable for automotive energy recovery, on-board charger snubbing, and engine control unit power protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for STTH1R06UFY 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.
STTH1R06UFY belongs to ST's Turbo 2 ultrafast rectifier product line, engineered specifically for high-efficiency, high-reliability energy recovery in 48 V automotive systems - balancing low VF, fast trr, and AEC-Q101 ruggedness in compact surface-mount packages.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The STTH1R06UFY supports continuous operation up to 175 °C junction temperature, verified per AEC-Q101 stress testing. This rating is maintained across its full VRRM range (-40 to +175 °C), enabling deployment in under-hood environments without thermal derating in properly heatsinked layouts.
Does STTH1R06UFY support automated optical inspection (AOI)?
Yes - the SMB Flat package features wettable flank leads with controlled side-wall geometry, allowing AOI systems to reliably inspect solder fillet formation on both top and bottom surfaces after reflow, meeting IPC-A-610 Class 3 requirements for automotive assembly.
How does its reverse recovery softness affect EMI performance?
With a softness factor >3 across dI/dt = 100–500 A/µs, STTH1R06UFY exhibits gradual current decay during turn-off, reducing di/dt-induced voltage spikes and high-frequency ringing. This directly lowers conducted EMI amplitude by 8–12 dB in 30–100 MHz bands, easing CISPR 25 Class 5 compliance.
Is this diode suitable for bidirectional DC-DC converter topologies?
No - STTH1R06UFY is a unidirectional ultrafast rectifier. It conducts only from anode to cathode and blocks reverse current. Bidirectional topologies require actively controlled switches (e.g., synchronous MOSFETs) or dedicated bidirectional devices not offered in this product family.
STTH1R06UFY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.9 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 45 ns
- Current - Reverse Leakage @ Vr:
- 1 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
STTH1R06UFY FAQ
1.How can I place an order for STTH1R06UFY through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH1R06UFY 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 STTH1R06UFY reliable?
The price and inventory of STTH1R06UFY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1R06UFY is usually 5 days.
3.What payment methods are accepted for STTH1R06UFY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1R06UFY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH1R06UFY?
STTH1R06UFY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH1R06UFY 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 STTH1R06UFY?
For technical support, including STTH1R06UFY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1R06UFY requirements.
6.How does Aetrix verify that STTH1R06UFY is sourced from the original manufacturer or authorized distributors?
All STTH1R06UFY 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 STTH1R06UFY meets industry standards.
7.What is the process for return or replacement of STTH1R06UFY?
All STTH1R06UFY units undergo pre-shipment inspection (PSI). If there is an issue with STTH1R06UFY, 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 STTH1R06UFY part is unused and in its original packaging.
Return procedure for STTH1R06UFY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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