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CSD18509Q5B

ACTIVE

40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 1.2 mOhm

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CSD18510Q5B ACTIVE 40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 0.96 mOhm This product has lower resistance and lower charge with a similar price.

CSD18509Q5B

ACTIVE
Data sheet Order now

Product details

VDS (V) 40 VGS (V) 20 Type N-channel Configuration Single Rds(on) at VGS=10 V (max) (mΩ) 1.2 Rds(on) at VGS=4.5 V (max) (mΩ) 1.7 VGSTH typ (typ) (V) 1.9 QG (typ) (nC) 150 QGD (typ) (nC) 17 QGS (typ) (nC) 29 ID - silicon limited at TC=25°C (A) 299 ID - package limited (A) 100 Logic level Yes Rating Catalog Operating temperature range (°C) -55 to 150
VDS (V) 40 VGS (V) 20 Type N-channel Configuration Single Rds(on) at VGS=10 V (max) (mΩ) 1.2 Rds(on) at VGS=4.5 V (max) (mΩ) 1.7 VGSTH typ (typ) (V) 1.9 QG (typ) (nC) 150 QGD (typ) (nC) 17 QGS (typ) (nC) 29 ID - silicon limited at TC=25°C (A) 299 ID - package limited (A) 100 Logic level Yes Rating Catalog Operating temperature range (°C) -55 to 150
VSON-CLIP (DNK) 8 30 mm² (6 mm × 5 mm)
  • Ultra-Low On Resistance
  • Low Thermal Resistance
  • Avalanche Rated
  • Logic Level
  • Pb Free Terminal Plating
  • RoHS Compliant
  • Halogen Free
  • SON 5-mm × 6-mm Plastic Package
  • Ultra-Low On Resistance
  • Low Thermal Resistance
  • Avalanche Rated
  • Logic Level
  • Pb Free Terminal Plating
  • RoHS Compliant
  • Halogen Free
  • SON 5-mm × 6-mm Plastic Package

This 40 V, 1 mΩ, SON 5 x 6 NexFET™ power MOSFET has been designed to minimize losses in power conversion applications.

This 40 V, 1 mΩ, SON 5 x 6 NexFET™ power MOSFET has been designed to minimize losses in power conversion applications.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet CSD18509Q5B N-Channel NexFET Power MOSFETs datasheet (Rev. A) PDF | HTML May 19, 2017
Application brief Estimating Leakage Currents of Power MOSFETs PDF | HTML Oct 31, 2025
Application note MOSFET Support and Training Tools (Rev. G) PDF | HTML Oct 27, 2025
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML Mar 25, 2024
Application note Using MOSFET Transient Thermal Impedance Curves In Your Design PDF | HTML Dec 18, 2023
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML Dec 6, 2023
Application note Using MOSFET Safe Operating Area Curves in Your Design PDF | HTML Mar 13, 2023
Application brief Tips for Successfully Paralleling Power MOSFETs PDF | HTML May 31, 2022
Technical article Motor Drive forum top FAQs: 3 methods to prevent electrical overstress PDF | HTML Dec 21, 2015
Application note Ringing Reduction Techniques for NexFET High Performance MOSFETs Nov 16, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Support software

LOAD-SWITCH-FET-LOSS-CALC — Power Loss Calculation Tool for Load Switch

Quickly trade off size, cost and performance to select the optimal MOSFET based on application conditions.
Supported products & hardware
Support software

NONSYNC-BOOST-FET-LOSS-CALC — NONSYNC BOOST FET LOSS Calculator

MOSFET power loss calculator for non-synchronous boost converter
Supported products & hardware
Simulation model

CSD18509Q5B PSpice Model (Rev. B)

SLPM128B.ZIP (4 KB) - PSpice model
Supported products & hardware
Simulation model

CSD18509Q5B TINA-TI Spice Model

SLPM218.ZIP (4 KB) - TINA-TI Spice model
Supported products & hardware
Calculation tool

FET-SOA-CALC-SELECT — MOSFET SOA calculation and selection tool

Excel based FET SOA calculation and selection tool
Supported products & hardware
Calculation tool

MOTOR-DRIVE-FET-LOSS-CALC — Power Loss Calculation Tool for BLDC Motor Drive

This is an Excel-based MOSFET power loss calculator for brushless DC motor drive applications.
Supported products & hardware
Calculation tool

SLPR053 — Power Loss Calculation Tool for Synchronous Inverting Buck Boost Converter

MOSFET power loss calculation and selection tool for synchronous inverting buck boost converter
Supported products & hardware
Calculation tool

SYNC-BOOST-FET-LOSS-CALC — Power Loss Calculation Tool for Synchronous Boost Converter

MOSFET power loss calculator for synchronous boost converter applications.

Supported products & hardware
Calculation tool

SYNC-BUCK-FET-LOSS-CALC — Power Loss Calculation Tool for Synchronous Buck Converter

Quickly trade off size, cost and performance to select the optimal MOSFET based on application conditions.
Supported products & hardware
Calculation tool

SYNC-RECT-FET-LOSS-CALC — Power loss calculation tool for synchronous rectifier

MOSFET power loss calculator for synchronous rectifier applications

Supported products & hardware
Reference design

PMP10974 — Universal AC Input 5V/10A/50W PSR Flyback Power Supply With Over 89% Avg Efficiency Reference Design

PMP10974 is a quasi-resonant Flyback power suppy based on the UCC28730 primary side regulation (PSR) controller. The elimination of optocoupler using PSR topology promises higher reliability and lower system cost. The design achieves less than 40mW standby power losses and over 89% average (...)

Supported products & hardware
Reference design

PMP4403 — USB Type-C DFP Charger 5V3A SSR Control Adapter Reference Design

The PMP4403 is an AC in 5V 3A reference design for USB Type-C™ DFP charger applications. It also is compliant with BC 1.2 devices. The solution is a synchronous rectified QR flyback which uses the UCC28740 and UCC24636. Good regulation and dynamic performance is achieved by using a secondary (...)
Supported products & hardware
Reference design

PMP4466 — Universal AC Input to 5V 3A Output Reference Design DOE6 and CoC V5 Tier 2 Compliant

The PMP4466 is an AC input to 5V 3A output reference design for high current charger applications, such as USB Type-C. The topology is Synchronous Rectified valley switched DCM Flyback which uses the UCC28740 and UCC24636. Good regulation and dynamic performance is achieved by using the secondary (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
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