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

Vishay Siliconix IRL520S

Name: IRL520S
Brand: Vishay Siliconix
SKU: IRL520S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRL520S

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRL520S.pdf

Description:: MOSFET N-CH 100V 9.2A D2PAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRL520S from Vishay Siliconix is a logic-level N-channel Power MOSFET in D2PAK (TO-263) package, rated for 100 V V_DS, 9.2 A continuous drain current at T_C = 25 °C, and 0.27 Ω R_DS(on) at V_GS = 5 V. It supports fast switching, repetitive avalanche operation, and 175 °C junction temperature-used in DC-DC converters, motor drivers, and high-current load switches.

For engineers reviewing the IRL520S datasheet, IRL520S pinout, IRL520S application, or IRL520S equivalent, key selection considerations include its logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), low on-resistance at 4–5 V gate bias, surface-mount D2PAK thermal performance, and unclamped inductive switching capability up to 170 mJ.

Technical Context

The IRL520S employs third-generation trench-gate silicon technology optimized for low R_DS(on) and fast switching with robust avalanche ruggedness. Its dynamic dV/dt rating of 5.5 V/ns and body diode reverse recovery time (t_rr = 130–190 ns) support reliable operation in hard-switched topologies.

Designed for logic-level microcontroller interfacing, it delivers full enhancement at V_GS = 4 V (R_DS(on) = 0.38 Ω) and V_GS = 5 V (R_DS(on) = 0.27 Ω), with gate charge parameters Q_g = 12 nC, Q_gs = 3.0 nC, and Q_gd = 7.1 nC enabling efficient gate driving in high-frequency power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - supports input rails up to 80 V DC with margin for transients in industrial power supplies
R_DS(on) @ V_GS = 5 V	0.27 Ω - enables ≤1.4 W conduction loss at 9.2 A, suitable for thermally constrained PCB-mount designs
Q_g	12 nC - determines gate driver current requirement (~1.2 A peak for 10 ns rise time)
I_D (continuous, T_C = 25 °C)	9.2 A - defines maximum steady-state current with heatsink or high-copper PCB
E_AS	170 mJ - specifies single-pulse unclamped inductive energy handling without failure
T_J max	175 °C - allows operation in high-ambient environments such as enclosed motor drives or automotive under-hood modules
dV/dt rating	5.5 V/ns - ensures immunity to parasitic turn-on during high-slew-rate switching transitions

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain pad for thermal conduction; 3-terminal configuration (G, D, S) with standard pin assignment: Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Pin/Terminal	Circuit Role	Design Meaning
Gate (G)	Control electrode	Logic-level compatible (V_GS(th) = 1.0–2.0 V); requires <100 nA leakage current drive
Drain (D)	High-side power terminal	Exposed copper tab - primary thermal path to PCB heatsink; electrically connected to die backside
Source (S)	Reference node for gate drive	Low-inductance return path; internal source inductance LS = 7.5 nH affects diode commutation

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS = 4 V (R_DS(on) = 0.38 Ω), eliminating need for gate boosters in 3.3/5 V MCU systems
Repetitive avalanche rated	Rated for 6.0 mJ EAR - enables reliable operation in inductive load switching without external snubbers
D2PAK thermal performance	R_thJC = 2.5 °C/W - allows >20 W power dissipation with minimal case-to-heatsink ΔT in compact layouts
Dynamic dV/dt immunity	5.5 V/ns rating - prevents false turn-on during fast voltage transients in half-bridge or synchronous rectifier applications
Body diode characterization	t_rr = 130–190 ns, Q_rr = 0.83–1.0 µC - enables predictable synchronous rectification timing and loss estimation

Applications

DC-DC Buck Converter	Brushed DC Motor Driver
Use Scenario: High-efficiency 12–48 V input to 3.3/5/12 V output conversion in industrial PLCs and embedded controllers. IC Role / Device Role / Timing Role: Synchronous rectifier switch in secondary side; duty-cycle controlled by PWM controller. Use Value: Low R_DS(on) (0.27 Ω) reduces conduction loss; logic-level gate enables direct drive from PWM IC with no level-shifter.	Use Scenario: Full-H-bridge control of 24 V, 5–8 A brushed motors in robotics and automated valves. IC Role / Device Role / Timing Role: Low-side switch in each leg; driven by microcontroller GPIO or dedicated gate driver. Use Value: Repetitive avalanche rating handles inductive kickback during PWM dead-time; 175 °C T_J supports sealed enclosure operation.
Hot-Swap Controller	LED Constant-Current Driver
Use Scenario: Inrush current limiting and fault protection in 48 V telecom and server backplane slots. IC Role / Device Role / Timing Role: Main pass element in linear or active OR-ing configuration; controlled via current-sense feedback loop. Use Value: Low gate threshold (1.0–2.0 V) allows precise turn-on using op-amp comparator; R_DS(on) stability over temperature simplifies current regulation.	Use Scenario: High-brightness LED string control in architectural lighting and signage with 36–72 V bus. IC Role / Device Role / Timing Role: Constant-current sink switch modulated at 1–20 kHz for dimming. Use Value: Fast switching (t_f = 27 ns) minimizes PWM transition losses; body diode t_rr enables clean current reversal in buck-derived topologies.

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: High-efficiency 12–48 V input to 3.3/5/12 V output conversion in industrial PLCs and embedded controllers.

IC Role / Device Role / Timing Role: Synchronous rectifier switch in secondary side; duty-cycle controlled by PWM controller.

Use Value: Low R_DS(on) (0.27 Ω) reduces conduction loss; logic-level gate enables direct drive from PWM IC with no level-shifter.

Use Scenario: Full-H-bridge control of 24 V, 5–8 A brushed motors in robotics and automated valves.

IC Role / Device Role / Timing Role: Low-side switch in each leg; driven by microcontroller GPIO or dedicated gate driver.

Use Value: Repetitive avalanche rating handles inductive kickback during PWM dead-time; 175 °C T_J supports sealed enclosure operation.

Hot-Swap Controller

LED Constant-Current Driver

Use Scenario: Inrush current limiting and fault protection in 48 V telecom and server backplane slots.

IC Role / Device Role / Timing Role: Main pass element in linear or active OR-ing configuration; controlled via current-sense feedback loop.

Use Value: Low gate threshold (1.0–2.0 V) allows precise turn-on using op-amp comparator; R_DS(on) stability over temperature simplifies current regulation.

Use Scenario: High-brightness LED string control in architectural lighting and signage with 36–72 V bus.

IC Role / Device Role / Timing Role: Constant-current sink switch modulated at 1–20 kHz for dimming.

Use Value: Fast switching (t_f = 27 ns) minimizes PWM transition losses; body diode t_rr enables clean current reversal in buck-derived topologies.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRLB8721PBF	R_DS(on) = 0.015 Ω @ V_GS = 10 V; higher gate charge (Q_g = 21 nC); TO-220AB package	Requires 10 V gate drive; better for high-current, low-frequency applications where thermal mass matters more than logic compatibility	Select when lower R_DS(on) justifies added gate drive complexity and through-hole mounting
STP16NF06L	R_DS(on) = 0.12 Ω @ V_GS = 5 V; lower V_DS (60 V); D²PAK package; no avalanche rating specified	Suitable only for ≤48 V systems; lacks documented repetitive avalanche capability for inductive loads	Choose for cost-sensitive 24–48 V DC-DC where avalanche robustness is not required

Compared with IRL520S, IRLB8721PBF offers significantly lower on-resistance but demands higher gate voltage and has greater switching losses due to higher Q_g; STP16NF06L provides better R_DS(on) at 5 V but sacrifices voltage rating and avalanche ruggedness-making IRL520S optimal for 100 V logic-driven inductive switching.

Availability

IRL520S is available at Aetrix Electronics and suitable for DC-DC converters, brushed motor drivers, hot-swap controllers, and LED constant-current drivers requiring stable component supply across industrial design cycles.

Supply support for IRL520S 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 power MOSFETs, diodes, and optoelectronics with emphasis on ruggedness, precision, and thermal performance.

The IRL520S belongs to Vishay's logic-level Power MOSFET family designed specifically for direct microcontroller interface in high-reliability industrial and automotive power switching applications.

FAQ

What is the maximum continuous drain current for the IRL520S at 100 °C case temperature?

The IRL520S supports 6.5 A continuous drain current at T_C = 100 °C, per its Absolute Maximum Ratings table. This derating reflects thermal limits of the D2PAK package and must be validated against actual PCB layout, copper area, and ambient conditions. The IRL520S maintains safe operation up to 175 °C junction temperature, making it suitable for thermally demanding environments where the IRL520S is deployed.

Does the IRL520S have a specified avalanche energy rating?

Yes, the IRL520S is repetitively avalanche rated with E_AR = 6.0 mJ and single-pulse E_AS = 170 mJ (tested per Fig. 12). These values are measured under defined conditions (V_DD = 25 V, L = 3.0 mH, R_G = 25 Ω, I_AS = 9.2 A). The IRL520S leverages this ruggedness in inductive load switching without external protection, distinguishing it from non-avalanche-rated MOSFETs.

What is the gate-source threshold voltage range for the IRL520S?

The IRL520S has a gate-source threshold voltage V_GS(th) of 1.0 V minimum to 2.0 V maximum at I_D = 250 µA and V_DS = V_GS. This logic-level range ensures reliable turn-on with 3.3 V or 5 V microcontroller outputs. The IRL520S achieves full enhancement at V_GS = 4 V (R_DS(on) = 0.38 Ω), confirming its suitability for low-voltage gate drive architectures.

Can the IRL520S be used in surface-mount applications without a heatsink?

The IRL520S can operate without an external heatsink in low-duty-cycle or low-current applications, but its maximum power dissipation in PCB-mount configuration is 3.7 W at T_A = 25 °C (R_thJA = 40 °C/W). For sustained 9.2 A operation, a heatsink or high-copper PCB is required. Thermal design must account for the IRL520S's R_thJC = 2.5 °C/W and exposed drain pad mounting to ensure T_J remains ≤175 °C.

Is the IRL520S RoHS-compliant and halogen-free?

Yes, the IRL520S is RoHS-compliant and halogen-free per Vishay's standard product policy and packaging specifications (document number 90382). Lead (Pb)-free soldering is supported with peak temperature up to 300 °C for 10 seconds. The IRL520S meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly, ensuring reliability in reflow processes.

IRL520S Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 9.2A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4V, 5V

Rds On (Max) @ Id, Vgs:: 270mOhm @ 5.5A, 5V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 12 nC @ 5 V

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 490 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.7W (Ta), 60W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263 (D2PAK)

IRL520S FAQ

1.How can I place an order for IRL520S through Aetrix?

Please submit a Request for Quotation (RFQ) for IRL520S 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 IRL520S reliable?

The price and inventory of IRL520S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL520S is usually 5 days.

3.What payment methods are accepted for IRL520S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL520S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRL520S?

IRL520S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRL520S 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 IRL520S?

For technical support, including IRL520S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL520S requirements.

6.How does Aetrix verify that IRL520S is sourced from the original manufacturer or authorized distributors?

All IRL520S 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 IRL520S meets industry standards.

7.What is the process for return or replacement of IRL520S?

All IRL520S units undergo pre-shipment inspection (PSI). If there is an issue with IRL520S, 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 IRL520S part is unused and in its original packaging.

Return procedure for IRL520S:

1.Submit a request within 90 days.

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

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