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CSD18512Q5B ACTIVE 40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 1.6 mOhm This product has lower resistance and a lower price.

Product details

VDS (V) 40 Configuration Single Rds(on) max at VGS=4.5 V (mOhms) 3.3 Rds(on) max at VGS=10 V (mOhms) 2.3 IDM - pulsed drain current (Max) (A) 400 QG typ (nC) 52 QGD typ (nC) 8.4 QGS typ (nC) 10.3 Package (mm) SON5x6 VGS (V) 20 VGSTH typ (V) 1.8 ID - silicon limited at Tc=25degC (A) 204 ID - package limited (A) 100 Logic level Yes
VDS (V) 40 Configuration Single Rds(on) max at VGS=4.5 V (mOhms) 3.3 Rds(on) max at VGS=10 V (mOhms) 2.3 IDM - pulsed drain current (Max) (A) 400 QG typ (nC) 52 QGD typ (nC) 8.4 QGS typ (nC) 10.3 Package (mm) SON5x6 VGS (V) 20 VGSTH typ (V) 1.8 ID - silicon limited at Tc=25degC (A) 204 ID - package limited (A) 100 Logic level Yes
  • Ultra-Low Qg and Qgd
  • Low Thermal Resistance
  • Avalanche Rated
  • Logic Level
  • Pb-Free Terminal Plating
  • RoHS Compliant
  • Halogen-Free
  • SON 5 mm × 6 mm Plastic Package
  • Ultra-Low Qg and Qgd
  • 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, 1.8-mΩ, 5 mm × 6 mm NexFET™ power MOSFET is designed to minimize losses in power conversion applications.

This 40-V, 1.8-mΩ, 5 mm × 6 mm NexFET™ power MOSFET is designed to minimize losses in power conversion applications.

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Technical documentation

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Type Title Date
* Data sheet CSD18502Q5B 40 V N-Channel NexFET™ Power MOSFET datasheet (Rev. B) PDF | HTML 18 May 2017
Application note MOSFET Support and Training Tools (Rev. A) PDF | HTML 04 Nov 2022
Application note Tips for Successfully Paralleling Power MOSFETs PDF | HTML 31 May 2022
Technical article Understanding the benefits of “lead-free” power MOSFETs 08 Feb 2019
Application note QFN and SON PCB Attachment (Rev. B) PDF | HTML 24 Aug 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Design guide 18-V/400-W 98% Efficient Compact Brushless DC Motor Drive Design Guide 23 Aug 2016
Application note Semiconductor and IC Package Thermal Metrics (Rev. C) PDF | HTML 19 Apr 2016
Technical article When to use load switches in place of discrete MOSFETs 03 Feb 2016
Technical article 48V systems: Driving power MOSFETs efficiently and robustly 08 Oct 2015
Application note Ringing Reduction Techniques for NexFET High Performance MOSFETs 16 Nov 2011

Design & development

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

Simulation model

CSD18502Q5B TINA-TI Spice Model

SLPM086.TSM (17 KB) - TINA-TI Spice Model
Simulation model

CSD18502Q5B Unencrypted PSpice Model (Rev. B)

SLPM055B.ZIP (6 KB) - PSpice Model
Calculation tool

MOTOR-DRIVE-FET-LOSS-CALC — MOSFET power loss calculator for motor drive applications

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

NONSYNC-BOOST-FET-LOSS-CALC — Power loss calculation tool for non-synchronous boost converter

MOSFET power loss calculator for non-synchronous boost converter
Calculation tool

SYNC-BOOST-FET-LOSS-CALC — Power loss calculation tool for synchronous boost converter

MOSFET power loss calculator for synchronous boost converter applications.
Calculation tool

SYNC-BUCK-FET-LOSS-CALC — MOSFET power loss calculator for synchronous buck converter applications

Quickly trade off size, cost and performance to select the optimal MOSFET based on application conditions.
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The PMP11600 is a reference design for 5V 2A adapter applications. The solution implements a high efficiency primary side controller UCC28704, it is fully tested and passes conduction EMI. This design uses Volt-Second balance control synchronous rectifier UCC24636 for high efficiency. The board (...)
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TIDA-00772 — 18-V/400-W 98% Efficient Compact Brushless DC Motor Drive w/Stall Current Limit Reference Design

The TIDA-00772 is a 18 A RMS drive for a three phase brushless DC (BLDC) motor in power tools operating from a 5-cell Li-ion battery with a voltage up to 21 V. This design is a 45 x 50 mm compact drive implementing sensor-based trapezoidal control. The design uses a discrete, compact MOSFET-based (...)
Design guide: PDF
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Reference designs

PMP8973 — 18Vdc-60Vdc Input, 3.3V/15A Active Clamp Forward, 1/8 Brick Reference Design

The PMP8973 reference design generates a 3.3V/15A output from an 18V to 60V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD16415Q5 and CSD18502Q5B, implemented as synchronous rectifiers, provides for a highly efficient (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP4468 — 18-V to 36-Vdc input, 5-V/30-W active clamp forward reference design

The PMP4468 is an isolated DC-DC module reference design targeted for industrial and telecom applications. The DC input range is from 18 V to 36 V, with a 24-V typical input and a 5-V, 6-A output. The LM5025A active clamp forward controller is used in the design. The efficiency is up to 90% with (...)
Test report: PDF
Schematic: PDF
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PMP4390 — Universal AC Input 15W Adapter with Energy Star 6 Efficiency Rating Reference Design

This 5V / 3A adapter solution is fully tested and passes EMI and EMC (CE,RE) safety requirements. It implements a high efficiency primary side controller UCC28713 and synchronous rectifier UCC24610 pair. The efficiency of the design complies with Energy Star 6 and is designed to fit into small form (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP9126 — 36 to 75VDC Input 5V/15A Active Clamp Forward 1/8 Brick Form Factor Reference Design

This reference design generates a 5V/15A output from a 36V to 75V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD17501Q5A and CSD18502Q5B, implemented as a synchronous rectifiers, provides for a highly efficient (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP8790 — Active Clamp Forward Quarter Brick (18 to 60Vdc Input 3.3V/12A) Reference Design

This reference design generates a 3.3V/12A output from a wide 18V-60V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD17501Q5A and CSD18502Q5B, implemented as self-driven synchronous rectifiers, provide for an (...)
Test report: PDF
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