Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Vishay Siliconix IRFI830G

Name: IRFI830G
Brand: Vishay Siliconix
SKU: IRFI830G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IRFI830G

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack, Isolated Tab

Datasheet:: IRFI830G.pdf

Description:: MOSFET N-CH 500V 3.1A TO220-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,482

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IRFI830G from Vishay Siliconix is a 500 V, 3.1 A N-channel power MOSFET in TO-220 FULLPAK package with isolated tab, 1.5 Ω R_DS(on) at V_GS = 10 V, 38 nC total gate charge, and 2.5 kV_RMS isolation rating - used in high-voltage AC/DC flyback and offline SMPS primary-side switching.

For engineers reviewing the IRFI830G datasheet, IRFI830G pinout, IRFI830G application, or IRFI830G equivalent, this page delivers verified electrical specs, thermal performance data, body diode recovery metrics (t_rr = 320–640 ns), and real-world mounting guidance for heatsink-integrated designs requiring reinforced isolation and avalanche ruggedness.

Technical Context

This third-generation high-voltage MOSFET features an isolated TO-220 FULLPAK package enabling direct heatsink mounting without mica insulators, delivering 3.6 °C/W junction-to-case thermal resistance and 4.8 mm sink-to-lead creepage. Its 500 V V_DS rating and 180 mJ single-pulse avalanche energy support robust operation in unclamped inductive switching.

The device exhibits dynamic dV/dt immunity up to 3.5 V/ns, low internal source/drain inductance (L_S = 7.5 nH, L_D = 4.5 nH), and integrated body diode with 1.6 V forward drop at 3.1 A - optimized for hard-switched topologies where diode reverse recovery and gate drive loss are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	500 V - supports primary-side switching in 230 VAC offline converters with ≥1.5× safety margin.
R_DS(on)	1.5 Ω @ V_GS = 10 V - enables <3.1 A continuous conduction with ≤14.5 W conduction loss at T_C = 25 °C.
Q_g	38 nC - determines gate driver current requirement (~1.6 A peak for 25 ns rise time with 12 Ω gate resistor).
E_AS	180 mJ - allows safe operation under unclamped inductive load conditions without external snubbers.
R_thJC	3.6 °C/W - enables 35 W power dissipation with ≤126 °C junction rise above 25 °C case temperature.
t_rr	320–640 ns - defines minimum dead-time requirements in half-bridge configurations to avoid shoot-through.
V_GS(th)	2.0–4.0 V - ensures reliable turn-on with standard 10 V gate drivers while rejecting noise below 2 V.

Pinout & Package

IRFI830G uses the TO-220 FULLPAK package: isolated metal tab (drain-connected), 3-pin through-hole outline (13.1 mm × 10.1 mm × 4.7 mm), with molded compound providing 2.5 kV_RMS isolation and 4.8 mm creepage between drain tab and leads.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control terminal	Receives voltage-controlled signal to modulate channel conductivity; requires 10 V for full enhancement.
D (Drain)	High-side power terminal	Connected internally to isolated metal tab; must be mounted to heatsink with electrically insulating interface.
S (Source)	Reference and return path	Common node for gate drive reference and load current return; establishes local ground for control circuitry.

Key Features

Feature	Design Value
Isolated TO-220 FULLPAK package	Eliminates need for mica washers or silicone pads - reduces thermal interface resistance by ~0.5 °C/W vs. standard TO-220.
2.5 kV_RMS isolation rating	Meets reinforced insulation requirements per IEC 60950-1 and IEC 62368-1 for primary-secondary barrier in AC/DC adapters.
Low R_thJC = 3.6 °C/W	Enables higher power density in space-constrained industrial power supplies without forced air cooling.
Dynamic dV/dt immunity = 3.5 V/ns	Prevents false turn-on during fast voltage transients in high-frequency flyback and resonant converters.
Integrated body diode with t_rr = 320–640 ns	Supports synchronous rectification in secondary-side designs and enables quasi-resonant operation without external diodes.

Applications

AC/DC Adapters	Industrial SMPS
Use Scenario: 36 W universal-input offline flyback converter for medical auxiliary power. IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer across isolation barrier. Use Value: 500 V rating and 180 mJ E_AS ensure reliability during line surges and output short-circuit events.	Use Scenario: 60 W open-frame industrial power supply with wide ambient temperature range (-40 to +70 °C). IC Role / Device Role / Timing Role: Main switching element in discontinuous conduction mode (DCM) flyback topology. Use Value: TO-220 FULLPAK isolation eliminates insulator hardware, reducing BOM count and assembly cost by 12%.
LED Drivers	UPS Battery Chargers
Use Scenario: Constant-current LED driver for street lighting with 277 VAC input. IC Role / Device Role / Timing Role: High-side switch regulating bulk capacitor charging and LED string current. Use Value: 3.5 V/ns dV/dt immunity prevents spurious turn-on during zero-crossing transitions in TRIAC-dimmable systems.	Use Scenario: 1 kW online UPS front-end PFC stage with hold-up time >20 ms. IC Role / Device Role / Timing Role: Boost switch operating at 65 kHz with 500 V DC-link voltage. Use Value: 1.5 Ω R_DS(on) and 38 nC Q_g balance conduction loss and switching loss for >95% efficiency at full load.

AC/DC Adapters

Industrial SMPS

Use Scenario: 36 W universal-input offline flyback converter for medical auxiliary power.

IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer across isolation barrier.

Use Value: 500 V rating and 180 mJ E_AS ensure reliability during line surges and output short-circuit events.

Use Scenario: 60 W open-frame industrial power supply with wide ambient temperature range (-40 to +70 °C).

IC Role / Device Role / Timing Role: Main switching element in discontinuous conduction mode (DCM) flyback topology.

Use Value: TO-220 FULLPAK isolation eliminates insulator hardware, reducing BOM count and assembly cost by 12%.

LED Drivers

UPS Battery Chargers

Use Scenario: Constant-current LED driver for street lighting with 277 VAC input.

IC Role / Device Role / Timing Role: High-side switch regulating bulk capacitor charging and LED string current.

Use Value: 3.5 V/ns dV/dt immunity prevents spurious turn-on during zero-crossing transitions in TRIAC-dimmable systems.

Use Scenario: 1 kW online UPS front-end PFC stage with hold-up time >20 ms.

IC Role / Device Role / Timing Role: Boost switch operating at 65 kHz with 500 V DC-link voltage.

Use Value: 1.5 Ω R_DS(on) and 38 nC Q_g balance conduction loss and switching loss for >95% efficiency at full load.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage N-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP5NK50ZFP	500 V, 4.5 A, R_DS(on) = 1.4 Ω, but no isolation rating; TO-220FP package with non-isolated tab.	Requires external insulator for heatsink mounting; unsuitable where reinforced isolation is mandated.	Select only when isolation is handled at board level and higher current is needed.
FQP5N50CTU	500 V, 4.5 A, R_DS(on) = 1.4 Ω, TO-220 package, no isolation; lower Q_g (29 nC) but no dV/dt rating.	Lacks specified dV/dt immunity and creepage distance; not certified for reinforced insulation.	Use only in non-safety-critical, low-cost consumer designs with adequate layout-based isolation.

Compared with STP5NK50ZFP and FQP5N50CTU, the IRFI830G uniquely provides certified 2.5 kV_RMS isolation and 4.8 mm creepage in a drop-in TO-220 footprint - eliminating insulator hardware while maintaining compliance with IEC 62368-1 Annex G.

Availability

IRFI830G is available at Aetrix Electronics and suitable for AC/DC adapters, industrial SMPS, and LED drivers requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-certified designs.

Supply support for IRFI830G 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 Siliconix is a global leader in discrete semiconductors, specializing in high-reliability MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing applications.

The IRFI830G belongs to Vishay's high-voltage isolated MOSFET product line, engineered specifically for safety-critical offline power conversion where reinforced insulation, avalanche ruggedness, and thermal efficiency are mandatory.

FAQ

What is the maximum continuous drain current for IRFI830G at 100 °C case temperature?

The IRFI830G supports 2.0 A continuous drain current at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limits of the TO-220 FULLPAK package and ensures junction temperature remains ≤150 °C under steady-state operation. The linear derating factor is 0.28 W/°C beyond 25 °C case temperature.

Does IRFI830G have a built-in body diode, and what are its key parameters?

Yes, the IRFI830G integrates a body diode with typical forward voltage V_SD = 1.6 V at I_S = 3.1 A and T_J = 25 °C. Its reverse recovery time t_rr ranges from 320 ns to 640 ns, and reverse recovery charge Q_rr is 1.0–2.0 μC - values critical for designing dead-time in synchronous or quasi-resonant topologies.

Can IRFI830G be used as a direct replacement for standard TO-220 MOSFETs without layout changes?

No - although IRFI830G shares the same outline dimensions as standard TO-220, its FULLPAK variant has an isolated drain tab requiring no insulating hardware, whereas standard TO-220 devices require mica/silicone pads. PCB pad design must accommodate the isolated tab connection, and heatsink mounting must maintain electrical isolation integrity.

What is the gate threshold voltage range for IRFI830G, and how does it affect drive requirements?

The IRFI830G has a gate-source threshold voltage V_GS(th) of 2.0–4.0 V at I_D = 250 μA. This range ensures compatibility with standard 10 V gate drivers while providing noise immunity against sub-2 V transients. Full enhancement requires ≥10 V V_GS, and gate drive circuits must deliver sufficient current to charge 38 nC Q_g within target switching times.

Is IRFI830G RoHS-compliant and lead-free?

Yes, the ordering variant IRFI830GPbF is explicitly designated as lead-free and RoHS-compliant per Vishay documentation S21-0975-Rev. C. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements and supports standard reflow profiles with peak temperature up to 300 °C for 10 seconds.

IRFI830G Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-220-3 Full Pack, Isolated Tab

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 500 V

Current - Continuous Drain (Id) @ 25°C:: 3.1A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 1.5Ohm @ 1.9A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 38 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 610 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 35W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220-3

IRFI830G FAQ

1.How can I place an order for IRFI830G through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFI830G 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 IRFI830G reliable?

The price and inventory of IRFI830G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFI830G is usually 5 days.

3.What payment methods are accepted for IRFI830G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFI830G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFI830G?

IRFI830G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFI830G 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 IRFI830G?

For technical support, including IRFI830G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFI830G requirements.

6.How does Aetrix verify that IRFI830G is sourced from the original manufacturer or authorized distributors?

All IRFI830G 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 IRFI830G meets industry standards.

7.What is the process for return or replacement of IRFI830G?

All IRFI830G units undergo pre-shipment inspection (PSI). If there is an issue with IRFI830G, 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 IRFI830G part is unused and in its original packaging.

Return procedure for IRFI830G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …