CSD18503Q5AT CSD18503Q5AT is an N-Channel MOSFET from Texas Instruments with 40V drain-source voltage and 100A continuous drain current. It features a low 4.3mOhm on-resistance and is housed in a surface-mount 8-PowerTDFN package.
Mfr Part #:

CSD18503Q5AT

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
CSD18503Q5AT is an N-Channel MOSFET from Texas Instruments with 40V drain-source voltage and 100A continuous drain current. It features a low 4.3mOhm on-resistance and is housed in a surface-mount 8-PowerTDFN package.
✓ Total Stock: 32,949 pcs
$ Price Range: $0.91 - $2.89

CSD18503Q5AT Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
24,704 pcs
24704 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
8,245 pcs
8245 pcs On Request 1 On Request On Request 21+ On Request On Request

CSD18503Q5AT Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Drain to Source Voltage (Vdss)
Drive Voltage (Max Rds On, Min Rds On)
FET Type
Gate Charge (Qg) (Max) @ Vgs
Halogen Free
Input Capacitance (Ciss) (Max) @ Vds
Lead Style
Mounting Type
Operating Temperature
Power Dissipation (Max)
Rds On (Max) @ Id, Vgs
SVHC Present
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Vgs (Max)
Vgs(th) (Max) @ Id

CSD18503Q5AT Description

Short technical summary and product information.

The CSD18503Q5AT is an N-Channel MOSFET from Texas Instruments designed for high-efficiency power conversion applications. It features a drain-source voltage rating of 40V and a continuous drain current of 100A at case temperature (Tc). The device has a low on-resistance of 4.3mOhm maximum at 22A and 10V gate drive, enabling high current handling with minimal conduction losses.

 

The MOSFET exhibits a typical gate charge of 16nC at 4.5V gate-source voltage and an input capacitance of 2640pF at 20V drain-source voltage, which supports efficient switching performance. The gate threshold voltage is 2.3V maximum at 250µA drain current. The maximum gate-source voltage rating is ±20V, providing robust drive tolerance.

 

The device is offered in a surface-mount 8-PowerTDFN package (also known as 8-VSONP 5x6) for compact PCB layouts. Power dissipation is rated at 3.1W at ambient temperature and 120W at case temperature. It operates over a junction temperature range of -55°C to 150°C, suitable for demanding environments.

 

This MOSFET is suited for applications such as power management, DC-DC converters, and load switches. The part is listed as RoHS3 compliant and REACH unaffected, although these compliance claims are unverified. The manufacturer is Texas Instruments, a leading semiconductor supplier.

CSD18503Q5AT Quick Information

Product Type: N-Channel MOSFET
Series: NexFET
Canonical Name: CSD18503Q5AT N-Channel MOSFET, 40V, 100A, 8-PowerTDFN
Subcategory: Single MOSFET

CSD18503Q5AT Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

CSD18503Q5AT Estimated Pricing

Qty Low High
1+ $2.89 $2.89
10+ $1.87 $1.87
100+ $1.13 $1.13
250+ $1.13 $1.13
500+ $0.98 $0.98
1,000+ $0.91 $0.91

Estimated market price range - modelled values for guidance only, not live distributor offers.

CSD18503Q5AT Features

  • N-Channel MOSFET with 40V drain-source voltage.
  • Continuous drain current rating of 100A at Tc.
  • Low on-resistance of 4.3mOhm at 22A, 10V.
  • Surface-mount 8-PowerTDFN (5x6mm) package.
  • Operating junction temperature range -55°C to 150°C.

CSD18503Q5AT Applications

  • Suitable for DC-DC converter power stages.
  • Used in load switch and power management circuits.
  • Ideal for high-current switching applications.
  • Applicable in motor control and battery protection.

CSD18503Q5AT FAQs

7 frequently asked questions generated from this part’s specifications.
What is the drain-source voltage rating of the CSD18503Q5AT?

40V.

What is the maximum continuous drain current?

100A at case temperature (Tc).

What is the on-resistance?

4.3mOhm maximum at 22A and 10V gate drive.

What is the gate charge?

16nC maximum at 4.5V gate-source voltage.

What is the operating temperature range?

-55°C to 150°C junction temperature.

What package is the CSD18503Q5AT available in?

8-PowerTDFN (8-VSONP 5x6).

Is the CSD18503Q5AT RoHS compliant?

It is listed as RoHS3 Compliant, but this is unverified.

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