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Infineon Technologies IRF520NSTRL
- Part No.:
- IRF520NSTRL
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
IRF520NSTRL.pdf
- Description:
- MOSFET N-CH 100V 9.7A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,958
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Product details
Overview
IRF520NSTRL from Infineon Technologies (formerly International Rectifier) is an N-channel enhancement-mode MOSFET in TO-220AB package, rated for 100 V VDS, 9.2 A ID (TC = 25°C), and 0.27 Ω RDS(on) at VGS = 10 V. It serves as a power switch in DC motor drives, LED lighting ballasts, and offline AC-DC SMPS primary-side switching.
For engineers reviewing the IRF520NSTRL datasheet, IRF520NSTRL pinout, IRF520NSTRL application, or IRF520NSTRL equivalent, key selection criteria include its 100 V blocking voltage, 9.2 A continuous drain current capability, low gate charge (Qg = 24 nC), thermal resistance (RθJC = 1.2°C/W), and lead-free TO-220AB packaging for industrial power control designs.
Technical Context
This MOSFET uses planar silicon process technology with optimized channel geometry to achieve stable RDS(on) across temperature and gate drive voltage. Its threshold voltage (VGS(th)) ranges from 2.0 V to 4.0 V, enabling compatibility with 3.3 V and 5 V logic-level gate drivers when operated in linear or switching modes.
The device features built-in avalanche energy rating (EAS = 125 mJ) and 100% UIS-tested ruggedness. Its SOA curve supports repetitive pulse operation up to 10 ms at 25°C ambient, with derating above 25°C based on junction-to-case thermal resistance of 1.2°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 100 V - Maximum drain-source blocking voltage for use in 48 V–80 V DC bus or 120 VAC line-referenced circuits. |
| ID (TC = 25°C) | 9.2 A - Continuous drain current rating at case temperature 25°C; usable up to 7.2 A at TC = 100°C per SOA limits. |
| RDS(on) @ VGS = 10 V | 0.27 Ω - On-resistance determining conduction loss; yields ~2.2 W dissipation at 9.2 A. |
| Qg | 24 nC - Total gate charge defining required driver current and switching transition time in hard-switched topologies. |
| RθJC | 1.2°C/W - Junction-to-case thermal resistance enabling heatsink sizing for ≤100°C junction under 2.2 W loss. |
| EAS | 125 mJ - Single-pulse avalanche energy rating supporting inductive load switching without external snubbers. |
Pinout & Package
Package: TO-220AB, through-hole, lead-free, single-ended power package with isolated tab (drain-connected). Mounting requires insulating washer unless heatsink is electrically isolated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (Tab) | Main high-side current path | Electrically connected to metal tab; must be thermally coupled to heatsink and electrically isolated if floating ground reference is used. |
| Gate | Control terminal | Receives voltage-controlled signal; requires <2.0 V to fully turn off, ≥10 V for minimal RDS(on); sensitive to ESD. |
| Source | Reference node / return path | Serves as common return for gate drive and load current; defines local ground reference for gate control loop. |
Key Features
| Feature | Design Value |
|---|---|
| 100% UIS tested | Ensures robustness against inductive switching stress without requiring external clamping components. |
| Lead-free and RoHS compliant | Meets EU Directive 2011/65/EU; eliminates Pb contamination risk in assembly and end-of-life handling. |
| Fast body diode recovery (trr = 50 ns) | Reduces switching loss and ringing in freewheeling paths of buck converters and H-bridge motor drives. |
| Low gate threshold (VGS(th) max = 4.0 V) | Enables direct drive from microcontroller GPIOs without level-shifting circuitry in low-speed applications. |
Applications
| DC Motor Control | LED Constant-Current Driver |
|---|---|
Use Scenario: Unidirectional brushed DC motor speed control in industrial actuators and HVAC dampers. IC Role / Device Role / Timing Role: High-side or low-side power switch modulated via PWM at 1–20 kHz. Use Value: 0.27 Ω RDS(on) minimizes I²R loss at 5–8 A motor stall current, extending thermal margin in enclosed enclosures. | Use Scenario: Constant-current regulation for high-brightness LED strings in commercial signage and street lighting. IC Role / Device Role / Timing Role: Switching element in buck-derived constant-current topology operating at 25–100 kHz. Use Value: 125 mJ avalanche rating tolerates LED open-circuit transients without failure, improving field reliability. |
| Offline SMPS Primary Switch | Power Supply OR-ing Circuit |
Use Scenario: Primary-side switch in 15–30 W flyback converters for AC-DC adapters and IoT power supplies. IC Role / Device Role / Timing Role: Main power switch driven by UC3842-class controller with 50–100 kHz switching frequency. Use Value: 100 V VDS provides 2× safety margin over 85–265 VAC input rectified peak (≈375 V), enabling universal input design. | Use Scenario: Redundant 12 V DC power rail combining in telecom shelf power systems. IC Role / Device Role / Timing Role: Low-loss forward conduction switch replacing Schottky diodes in ideal diode configuration. Use Value: 0.27 Ω RDS(on) yields lower forward drop than 0.4 V Schottky at >1.5 A, reducing heat generation and improving efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP10NK60ZFP | 600 V VDS, 10 A ID, higher RDS(on) (0.73 Ω), SuperMESH™ process | Better suited for 400 V DC bus applications; not recommended for 100 V designs due to excessive conduction loss | Select only when higher voltage rating is mandatory and thermal budget allows higher RDS(on). |
| FQP50N06L | 60 V VDS, 50 A ID, 0.022 Ω RDS(on), logic-level gate | Optimized for 5–24 V systems; insufficient for 100 V line-referenced circuits due to voltage rating | Prefer for low-voltage, high-current battery-powered motor control where VDS margin is adequate. |
Compared with STP10NK60ZFP and FQP50N06L, IRF520NSTRL uniquely balances 100 V rating, moderate current capacity, and proven ruggedness in industrial 48–80 V DC power switching-making it optimal for cost-sensitive, thermally constrained legacy designs.
Availability
IRF520NSTRL is available at Aetrix Electronics and suitable for DC motor control, LED constant-current drivers, and offline SMPS primary switching requiring stable component supply and long-term industrial availability.
Supply support for IRF520NSTRL 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
Infineon Technologies acquired International Rectifier in 2015 and continues its legacy of high-reliability power semiconductors for industrial, automotive, and consumer applications.
The StrongIRFET™ product line, which includes IRF520NSTRL, is engineered for robust hard-switching performance in industrial power conversion, featuring enhanced avalanche capability and tight parameter distribution.
FAQ
Is IRF520NSTRL suitable for logic-level gate drive?
No. IRF520NSTRL has a gate threshold voltage range of 2.0–4.0 V and requires ≥10 V VGS to achieve its specified 0.27 Ω RDS(on). While it may partially turn on at 5 V, conduction losses increase significantly-use logic-level alternatives like IRLZ44N for 5 V MCU drive.
What is the maximum safe operating temperature for IRF520NSTRL?
The absolute maximum junction temperature is 175°C. For reliable long-term operation, keep TJ ≤ 150°C using derated current limits. With RθJC = 1.2°C/W and a 50°C heatsink, maximum continuous power dissipation is ~83 W-though SOA limits restrict practical ID to 7.2 A at TC = 100°C.
Does IRF520NSTRL have integrated gate protection?
No. IRF520NSTRL lacks integrated Zener gate protection. External 12–15 V gate Zener clamping is recommended when driving from high-impedance sources or in noisy environments to prevent gate oxide rupture from voltage spikes exceeding ±20 V.
Can IRF520NSTRL replace IRF530NSTRL in existing designs?
Yes, with verification. IRF520NSTRL (100 V, 9.2 A) has lower VDS and ID than IRF530NSTRL (100 V, 14 A), but identical pinout and gate characteristics. Confirm that peak load current remains ≤9.2 A and that SOA during switching transients remains within spec before substitution.
IRF520NSTRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 100 V
- Current - Continuous Drain (Id) @ 25°C:
- 9.7A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 200mOhm @ 5.7A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 25 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 330 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 3.8W (Ta), 48W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
IRF520NSTRL FAQ
1.How can I place an order for IRF520NSTRL through Aetrix?
Please submit a Request for Quotation (RFQ) for IRF520NSTRL 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 IRF520NSTRL reliable?
The price and inventory of IRF520NSTRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRF520NSTRL is usually 5 days.
3.What payment methods are accepted for IRF520NSTRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRF520NSTRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRF520NSTRL?
IRF520NSTRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRF520NSTRL 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 IRF520NSTRL?
For technical support, including IRF520NSTRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRF520NSTRL requirements.
6.How does Aetrix verify that IRF520NSTRL is sourced from the original manufacturer or authorized distributors?
All IRF520NSTRL 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 IRF520NSTRL meets industry standards.
7.What is the process for return or replacement of IRF520NSTRL?
All IRF520NSTRL units undergo pre-shipment inspection (PSI). If there is an issue with IRF520NSTRL, 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 IRF520NSTRL part is unused and in its original packaging.
Return procedure for IRF520NSTRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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