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onsemi NRVUS1KFA
- Part No.:
- NRVUS1KFA
- Manufacturer:
- onsemi
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
NRVUS1KFA.pdf
- Description:
- DIODE GEN PURP 800V 1A SOD123FL
- Quantity:
- Payment:
- Shipping:
Inventory:1,140
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Product details
Overview
NRVUS1KFA from onsemi is an automotive-grade super fast surface-mount silicon rectifier diode rated for 800 V repetitive peak reverse voltage, 1 A average forward current, and 50–75 ns maximum reverse recovery time; it features glass passivated junction, AEC-Q101 qualification, and SOD-123FA package for high-efficiency DC/DC conversion in engine control units.
For engineers reviewing the NRVUS1KFA datasheet, pinout, applications, or equivalent options, key selection criteria include its 800 V blocking capability, low 1.70 V max forward voltage at 1 A, AEC-Q101 compliance, thermal resistance (Junction-to-Lead: 21 °C/W), and suitability for automotive power supply filtering and flyback snubber circuits.
Technical Context
This device operates as a unidirectional power rectifier with a PN junction structure optimized for fast switching in high-frequency power converters. Its 50–75 ns reverse recovery time enables efficient operation up to ~1 MHz, while the glass-passivated chip ensures stable performance under thermal cycling and humidity stress.
The SOD-123FA package provides compact footprint and low thermal resistance (21 °C/W junction-to-lead), supporting reliable 1 A continuous conduction in space-constrained automotive modules. It is specified for −55 °C to +150 °C junction temperature range and meets UL 94V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports high-voltage DC bus rectification in 48 V mild-hybrid systems |
| IF(AV) | 1 A - delivers continuous output current in compact auxiliary power supplies |
| VF (max @ 1 A) | 1.70 V - limits conduction loss to ≤1.7 W at full load, reducing thermal burden |
| Trr (max) | 75 ns - enables clean commutation in 500 kHz–1 MHz SMPS designs |
| Junction Temp Range | −55 °C to +150 °C - qualified for under-hood automotive environments |
| AEC-Q101 | Qualified - meets stress test requirements for automotive electronics reliability |
| Package | SOD-123FA - 2.7 mm × 1.6 mm footprint with gull-wing leads for automated assembly |
Pinout & Package
SOD-123FA is a surface-mount plastic package with two terminals: cathode (marked end) and anode (unmarked end). It features gull-wing leads, moisture sensitivity level (MSL) 1 per J-STD-020, and is Pb-free/halogen-free/RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Output terminal for rectified DC | Connected to ground or return path; polarity marking critical for ESD-safe layout |
| 2 (Anode) | Input terminal for AC or switched input | Accepts incoming AC waveform or switching node; must withstand 800 V transient spikes |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Eliminates need for conformal coating in humid under-hood environments |
| Fast reverse recovery (≤75 ns) | Reduces switching losses and EMI in high-frequency flyback and boost converters |
| AEC-Q101 qualification | Validated for automotive use without additional qualification testing by Tier-1 suppliers |
| UL 94V-0 rating | Ensures flame retardancy in safety-critical power modules near battery systems |
Applications
| Engine Control Unit Power Supply | Onboard Charger Auxiliary Rectifier |
|---|---|
Use Scenario: Rectifying 12–48 V AC-derived signals in ECU main power rail conditioning. IC Role / Device Role / Timing Role: Unidirectional current steering diode enabling stable 5 V/3.3 V LDO input. Use Value: 800 V VRRM headroom prevents breakdown during load-dump transients up to ±100 V. | Use Scenario: Output rectification in isolated auxiliary DC/DC converter powering gate drivers. IC Role / Device Role / Timing Role: High-speed freewheeling diode in synchronous rectifier-assisted topology. Use Value: 75 ns Trr minimizes reverse recovery ringing, improving efficiency above 300 kHz switching. |
| Transmission Control Module Snubber | ADAS Camera Power Input Protection |
Use Scenario: Clamp diode in IGBT/MOSFET snubber networks for transmission solenoid drivers. IC Role / Device Role / Timing Role: Transient energy dissipation path during inductive turn-off events. Use Value: 30 A IFSM surge rating absorbs 8.3 ms half-sine surges without degradation. | Use Scenario: Reverse polarity and overvoltage protection at 12 V camera module input. IC Role / Device Role / Timing Role: Series-blocking diode preventing backfeed and fault propagation. Use Value: 1.70 V VF ensures <1.7 W power loss at 1 A, avoiding thermal derating in sealed housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | TO-277A package (larger footprint), 800 V VRRM, 75 ns Trr, but no AEC-Q101 certification | Industrial power supplies only; not approved for automotive production | Select when AEC-Q101 is not required and board space allows TO-277A mounting |
| VS-1EWH08-M3/54 | SOD-123FL package (same outline), 800 V VRRM, 1.75 V VF, AEC-Q101 qualified, but 100 ns Trr | Higher conduction loss and slower switching limit use in >400 kHz designs | Select when lower cost is prioritized over switching speed, and thermal margin exists |
Compared with STTH1R08 and VS-1EWH08-M3/54, the NRVUS1KFA uniquely combines AEC-Q101 qualification, 75 ns Trr, and SOD-123FA packaging-making it the only option qualified for high-frequency automotive power stages where space, reliability, and transient response are jointly constrained.
Availability
NRVUS1KFA is available at Aetrix Electronics and suitable for engine control units, onboard chargers, transmission control modules, and ADAS camera power systems requiring stable component supply across automotive production lifecycles.
Supply support for NRVUS1KFA 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
onsemi (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor solutions, specializing in automotive, industrial, cloud, and IoT applications.
The US1xKFA series-including NRVUS1KFA-is part of onsemi's automotive-qualified rectifier portfolio, designed specifically for high-reliability power conversion in harsh-environment vehicle subsystems.
FAQ
What is the peak repetitive reverse voltage rating for NRVUS1KFA?
The NRVUS1KFA has a peak repetitive reverse voltage (VRRM) rating of 800 V. This value is confirmed in the Absolute Maximum Ratings table of the official onsemi datasheet (US1MFA/D, Rev. 5). It defines the maximum DC or sinusoidal AC voltage the diode can block repeatedly without breakdown, making NRVUS1KFA suitable for 48 V hybrid vehicle power rails where load-dump transients exceed 100 V.
Is NRVUS1KFA qualified for automotive applications?
Yes, NRVUS1KFA is AEC-Q101 qualified and PPAP capable, as explicitly stated in the ordering information section of the onsemi datasheet. The "NRV" prefix denotes automotive-specific site and control change requirements. This qualification covers stress tests including temperature cycling, humidity bias HAST, and high-temperature reverse bias-ensuring reliability in under-hood environments where NRVUS1KFA is deployed.
What is the maximum forward voltage drop of NRVUS1KFA at 1 A?
The maximum instantaneous forward voltage (VF) of NRVUS1KFA is 1.70 V at IF = 1 A and TA = 25 °C, per the Electrical Characteristics table. This value is measured under pulse conditions (300 µs, 1% duty cycle) and represents worst-case conduction loss-critical for thermal design in sealed automotive modules where NRVUS1KFA operates continuously near its 1 A rating.
What package type does NRVUS1KFA use, and what are its key mechanical attributes?
NRVUS1KFA uses the SOD-123FA package (Case 425AB), a surface-mount plastic package with gull-wing leads. Key attributes include 2.7 mm × 1.6 mm body size, MSL 1 rating (unlimited floor life), and RoHS/Pb-free/halogen-free construction. The package drawing and dimensions are documented in the mechanical outline section of the onsemi datasheet, confirming compatibility with standard SMT reflow profiles used for NRVUS1KFA placement.
What is the reverse recovery time specification for NRVUS1KFA?
The maximum reverse recovery time (Trr) for NRVUS1KFA is 75 ns, tested at IF = 0.5 A, IR = 1 A, and Irr = 0.25 A. This parameter is listed in the Electrical Characteristics table and verified in Figure 6 of the onsemi datasheet. The 75 ns value enables NRVUS1KFA to operate efficiently in high-frequency switching applications such as 500 kHz flyback converters found in modern automotive DC/DC modules.
NRVUS1KFA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123FL
- Operating Temperature - Junction:
- -55°C ~ 150°C
NRVUS1KFA FAQ
1.How can I place an order for NRVUS1KFA through Aetrix?
Please submit a Request for Quotation (RFQ) for NRVUS1KFA 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 NRVUS1KFA reliable?
The price and inventory of NRVUS1KFA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NRVUS1KFA is usually 5 days.
3.What payment methods are accepted for NRVUS1KFA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NRVUS1KFA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NRVUS1KFA?
NRVUS1KFA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NRVUS1KFA 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 NRVUS1KFA?
For technical support, including NRVUS1KFA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NRVUS1KFA requirements.
6.How does Aetrix verify that NRVUS1KFA is sourced from the original manufacturer or authorized distributors?
All NRVUS1KFA 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 NRVUS1KFA meets industry standards.
7.What is the process for return or replacement of NRVUS1KFA?
All NRVUS1KFA units undergo pre-shipment inspection (PSI). If there is an issue with NRVUS1KFA, 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 NRVUS1KFA part is unused and in its original packaging.
Return procedure for NRVUS1KFA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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