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Vishay General Semiconductor - Diodes Division AR1FG-M3/H
- Part No.:
- AR1FG-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-219AB
- Datasheet:
-
AR1FG-M3/H.pdf
- Description:
- DIODE AVALANCHE 400V 1A DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:14,369
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Product details
Overview
AR1FG-M3/H from Vishay General Semiconductor is a surface-mount fast avalanche rectifier in the eSMP® Series, configured as a single diode with 400 V maximum repetitive peak reverse voltage (VRRM), 1.0 A average forward current (IF(AV)), and 120 ns reverse recovery time (trr). It features glass passivated pellet chip junction, AEC-Q101 qualification, and operates up to 175 °C junction temperature - deployed in automotive DC-DC converters and industrial freewheeling circuits.
For engineers reviewing the AR1FG-M3/H datasheet, AR1FG-M3/H pinout, AR1FG-M3/H application, or AR1FG-M3/H equivalent, key selection criteria include its 400 V VRRM, 1.4 V forward voltage at 1 A and 125 °C, 20 mJ non-repetitive avalanche energy (EAS), SOD-123W-compatible SMF (DO-219AB) package, and MSL Level 1 reflow compatibility.
Technical Context
This device is a unidirectional fast-switching avalanche-rated rectifier optimized for high-frequency power conversion where controlled reverse recovery and robust surge handling are critical. Its low trr (120 ns), low IR (1 μA @ 25 °C), and high EAS (20 mJ) enable reliable operation in inductive switching environments such as flyback snubbers and synchronous rectifier freewheel paths.
The SMF (DO-219AB) package delivers low thermal resistance (RθJM = 20 °C/W) and supports wave/reflow soldering per J-STD-002 and JESD 22-B102. The matte tin-plated terminals and halogen-free, RoHS-compliant construction meet automotive and industrial reliability requirements including AEC-Q101 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Withstands repetitive reverse voltage up to 400 V without breakdown; selected for 24–48 V input DC-DC stages with safety margin. |
| IF(AV) | 1.0 A - Continuous average forward current rating at 25 °C ambient on recommended PCB; derates to zero at 175 °C junction. |
| trr | 120 ns - Fast reverse recovery enables efficient operation above 100 kHz switching frequencies with reduced switching loss. |
| VF @ 1 A, 125 °C | 1.4 V - Forward voltage under elevated temperature ensures predictable conduction loss in thermally stressed automotive environments. |
| EAS | 20 mJ - Non-repetitive avalanche energy rating allows safe clamping of inductive turn-off transients without failure. |
| TJ(max) | 175 °C - Maximum junction temperature supports operation in under-hood automotive and high-ambient industrial enclosures. |
| CJ @ 4 V, 1 MHz | 9.3 pF - Low junction capacitance minimizes capacitive coupling and improves high-frequency noise immunity. |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case compatible with SOD-123W footprint; cathode indicated by color band; matte tin-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to lower-potential side of load or switch node; must handle 30 A IFSM surge during fault conditions. |
| Cathode | Forward current exit / reverse-blocking terminal | Connected to higher-potential rail; polarity marking enables correct orientation during automated placement and prevents reverse bias failure. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power supplies requiring zero defect reliability. |
| Glass passivated pellet chip junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for high-humidity environments. |
| MSL Level 1, peak reflow 260 °C | Enables single-pass lead-free reflow without preconditioning; eliminates moisture-related popcorning risk in production. |
| Low profile (max height 1.3 mm) | Reduces board stack height in space-constrained modules such as telematics ECUs and portable industrial controllers. |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates including EU RoHS Directive 2011/65/EU and JEDEC JS709C. |
Applications
| Automotive DC-DC Converters | Industrial Freewheeling Diodes |
|---|---|
Use Scenario: Step-down conversion from 48 V battery to 12 V subsystems in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode in synchronous buck converter output stage. Use Value: 120 ns trr and 20 mJ EAS prevent voltage overshoot during high-dI/dt switching transitions, ensuring stable 12 V rail regulation. |
Use Scenario: Inductive load suppression in PLC output modules driving solenoids and relays. IC Role / Device Role / Timing Role: Unidirectional clamp diode across inductive coils to absorb back-EMF energy. Use Value: 400 V VRRM and 175 °C TJ(max) support continuous operation in hot, dusty factory environments with 24–48 V control rails. |
| Telecom Power Rectification | Consumer AC-DC Adapters |
Use Scenario: Secondary-side rectification in isolated 48 V telecom PSUs delivering up to 100 W. IC Role / Device Role / Timing Role: High-efficiency output rectifier replacing Schottky diodes in high-voltage secondary windings. Use Value: 1.4 V VF at 125 °C maintains efficiency over full operating temperature range, reducing thermal derating needs. |
Use Scenario: Output rectification in compact wall adapters for USB-C PD chargers (20–65 W). IC Role / Device Role / Timing Role: Surface-mount fast rectifier in high-density flyback secondary circuits. Use Value: SMF (DO-219AB) footprint enables automated placement and matches SOD-123W land patterns, minimizing layout redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast avalanche rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay AR1FJ-M3/H | 600 V VRRM, same 1.0 A IF(AV), 120 ns trr, but higher VF (1.6 V @ 25 °C) | Better suited for 48–60 V input systems requiring higher reverse standoff; less optimal for 24 V systems due to higher conduction loss | Select AR1FJ-M3/H only when system reverse voltage exceeds 400 V; otherwise AR1FG-M3/H offers lower forward loss. |
| ON Semiconductor NUP2114MR6T1G | 40 V VRRM, 1.0 A IF(AV), 35 ns trr, not avalanche-rated, no AEC-Q101 qualification | Targeted at low-voltage logic-level protection, not power rectification; lacks EAS rating and automotive qualification | Not suitable as functional replacement; use only in non-automotive, sub-40 V signal-path clamping applications. |
Compared with AR1FJ-M3/H and NUP2114MR6T1G, the AR1FG-M3/H uniquely balances 400 V reverse capability, 20 mJ avalanche ruggedness, AEC-Q101 qualification, and thermally efficient SMF packaging - making it the preferred choice for mid-voltage automotive and industrial power conversion where reliability and transient robustness are mandatory.
Availability
AR1FG-M3/H is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial PLC output stages, and telecom 48 V power supplies requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for AR1FG-M3/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The AR1FG-M3/H belongs to Vishay's eSMP® Series of surface-mount fast avalanche rectifiers, engineered for high-frequency power conversion in automotive, industrial, and telecom systems demanding rugged transient response and extended temperature operation.
FAQ
What is the maximum junction temperature rating for AR1FG-M3/H?
The AR1FG-M3/H has a maximum junction temperature (TJ(max)) of +175 °C, enabling reliable operation in high-ambient environments such as automotive engine compartments and industrial control cabinets. This rating is validated per the Vishay datasheet revision dated 17-Sep-2020 and confirmed through thermal characterization curves showing derating to zero current at 175 °C junction temperature. The AR1FG-M3/H maintains specified electrical performance up to this limit when mounted on the recommended PCB pad area.
Is AR1FG-M3/H qualified for automotive applications?
Yes, the AR1FG-M3/H is AEC-Q101 qualified, as explicitly stated in the Vishay document number 87167. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - confirming suitability for automotive power electronics including body control modules and ADAS subsystems. The "HM3" suffix denotes AEC-Q101 qualification, and AR1FG-M3/H meets that standard per Vishay's ordering information table.
What does the "-M3/H" suffix indicate in AR1FG-M3/H?
The "-M3/H" suffix in AR1FG-M3/H specifies halogen-free, RoHS-compliant construction (M3) and packaging in 7-inch plastic tape and reel with 3000 units per reel (H). This aligns with Vishay's standardized ordering nomenclature in document 87167, where "M3" denotes environmental compliance and "H" defines the delivery format. The AR1FG-M3/H is not the AEC-Q101 variant (which would be AR1FGHM3/H), but retains all core electrical and thermal specs of the base family.
What is the reverse recovery time (trr) of AR1FG-M3/H and how is it measured?
The AR1FG-M3/H has a reverse recovery time (trr) of 120 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A at TJ = 25 °C, per the Vishay datasheet. This value reflects the time required for minority carriers to clear after forward conduction ceases, directly impacting switching losses in high-frequency converters. The 120 ns trr is consistent across the AR1FG variant and distinguishes it from slower rectifiers like general-purpose 1N400x series.
Does AR1FG-M3/H have an avalanche energy rating?
Yes, the AR1FG-M3/H is rated for 20 mJ of non-repetitive avalanche energy (EAS) at IAS = 1.0 A and TA = 25 °C. This rating confirms its ability to safely absorb inductive switching transients without failure - a critical feature for freewheeling and snubber applications. The EAS value is identical across the AR1FD–AR1FM family and is verified in the "Maximum Ratings" table of the Vishay datasheet (document 87167).
AR1FG-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-219AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Avalanche
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 140 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 12.6pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
- Operating Temperature - Junction:
- -55°C ~ 175°C
AR1FG-M3/H FAQ
1.How can I place an order for AR1FG-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for AR1FG-M3/H 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 AR1FG-M3/H reliable?
The price and inventory of AR1FG-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AR1FG-M3/H is usually 5 days.
3.What payment methods are accepted for AR1FG-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AR1FG-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AR1FG-M3/H?
AR1FG-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AR1FG-M3/H 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 AR1FG-M3/H?
For technical support, including AR1FG-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AR1FG-M3/H requirements.
6.How does Aetrix verify that AR1FG-M3/H is sourced from the original manufacturer or authorized distributors?
All AR1FG-M3/H 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 AR1FG-M3/H meets industry standards.
7.What is the process for return or replacement of AR1FG-M3/H?
All AR1FG-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with AR1FG-M3/H, 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 AR1FG-M3/H part is unused and in its original packaging.
Return procedure for AR1FG-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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