SPM4020T-3R3M-CA The TDK SPM4020T-3R3M-CA is a shielded SMD power inductor with a 3.3µH inductance and a 2.4A current rating. It offers a low DC resistance of 123mOhm max.
Mfr Part #:

SPM4020T-3R3M-CA

Available from 1 distributors
Mfr Name: TDK Corporation
TDK Corporation
The TDK SPM4020T-3R3M-CA is a shielded SMD power inductor with a 3.3µH inductance and a 2.4A current rating. It offers a low DC resistance of 123mOhm max.
Total Stock: 395 pcs
$ Price Range: $0.18

SPM4020T-3R3M-CA Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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395 pcs
395 pcs On Request 1 On Request On Request 15+ On Request On Request

SPM4020T-3R3M-CA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Current Rating (Amps)
DC Resistance (DCR)
Frequency
Height
Inductance
Length
Material
Mounting Type
Operating Temperature
Shielding
Tape & Reel
Tolerance
Type
Width
dcr (Typical @ at 0 A)
dcr (Typical/Maximum @ Idc 2)

SPM4020T-3R3M-CA Description

Short technical summary and product information.

The TDK SPM4020T-3R3M-CA is a surface mountable, shielded power inductor from the SPM4020T-CA series. It features a drum core construction with wirewound technology and an iron powder core material.

 

This inductor offers a nominal inductance of 3.3µH with a tolerance of ±20%. It is rated for a DC current of 2.4A (based on self-temperature rise) and 2.8A (based on inductance change). The maximum DC resistance is 123mOhm. The operating temperature range is -40°C to +125°C.

 

The component has a compact footprint with dimensions of 4.4mm x 4.1mm and a maximum height of 2.0mm. Its design is suitable for automatic mounting in tape and reel packaging. Applications include notebook computers, VRMs, cellular phones, HDDs, and car accessories.

 

Key electrical specifications include a test frequency of 100kHz for inductance measurement, with a typical DCR of 17.7mOhm at 0A and 10.6mOhm at Idc 2.

SPM4020T-3R3M-CA Quick Information

Product Type: SMD Power Inductor
Series: CA Series
Canonical Name: TDK Corporation SPM4020T-3R3M-CA SMD Power Inductor
Subcategory: Fixed Inductor

SPM4020T-3R3M-CA Compliance

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

SPM4020T-3R3M-CA Estimated Pricing

Qty Low High
1+ $0.18 $0.18

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

SPM4020T-3R3M-CA Features

  • Shielded SMD power inductor with iron powder core.
  • 3.3µH inductance with ±20% tolerance.
  • Rated for 2.4A DC current (Idc 2).
  • Compact 4.4x4.1mm footprint, 2.0mm max height.
  • Wide -40°C to +125°C operating temperature range.

SPM4020T-3R3M-CA Applications

  • Suitable for notebook and mobile computers.
  • Used in Voltage Regulator Modules (VRMs).
  • Applicable in cellular phone designs.
  • Component for Hard Disk Drive (HDD) systems.
  • Ideal for automotive accessory applications.

SPM4020T-3R3M-CA FAQs

7 frequently asked questions generated from this part’s specifications.
What is the inductance of SPM4020T-3R3M-CA?

3.3 µH nominal at 0A, measured at 100 kHz.

What is the current rating?

Two ratings: 2.4 A based on self temperature rise, and 2.8 A based on 30% inductance reduction.

What is the DC resistance?

Maximum 123 mOhm at 0A; typical values include 17.7 mOhm at 0A and 10.6 mOhm at 2.4A.

What is the operating temperature range?

-40°C to 125°C, including self temperature rise.

What is the package type?

Surface mount, nonstandard package with dimensions 4.40mm length, 4.10mm width, 2.00mm height.

Is the inductor shielded?

Yes, fully shielded.

What is the core material?

Iron powder.

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