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744290121 The Würth Elektronik 744290121 is a WE-UCF SMT common mode line filter with 120µH inductance and 5.5A rated current.
Mfr Part #:

744290121

Available from 1 distributors
Mfr Name: Würth Elektronik
Würth Elektronik
The Würth Elektronik 744290121 is a WE-UCF SMT common mode line filter with 120µH inductance and 5.5A rated current.
✓ Total Stock: 45 pcs
$ Price Range: $3.29 - $4.63

744290121 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Speed Components Ltd ✓
Non-Authorised Inventory information
45 pcs
On Request
45 pcs On Request 1 On Request On Request 17+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

744290121 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current Rating
Current Rating (Max)
DC Resistance (DCR)
DC Resistance (DCR) (Max)
Filter Type
Height (Max)
Inductance @ Frequency
Mounting Type
Number of Lines
Operating Temperature
Voltage Rating
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744290121 Description

Short technical summary and product information.

The Würth Elektronik 744290121 is a surface mount common mode choke from the WE-UCF series. It features a 2-line configuration with a nominal inductance of 0.12 mH (120 µH) measured at 10 kHz and 50 mV. The component is rated for a maximum DC current of 5.5 A with a temperature rise of 40 K, and has a maximum DC resistance of 10.5 mΩ.

 

This common mode filter is designed for power and signal line applications. It has a rated voltage of 80 V and an insulation test voltage of 500 V AC at 50 Hz. Typical leakage inductance is 680 nH at 1 MHz and 1 mA.

 

The component is housed in a horizontal, 4 flat lead package with dimensions of 14.5 mm length, 12.5 mm width, and a maximum height of 7.8 mm. It is designed for surface mount assembly and operates over a temperature range of -40°C to +125°C, with the rated current specified for ambient temperatures from -40°C to +85°C.

744290121 Quick Information

Product Type: Common Mode Choke
Series: WE-UCF
Canonical Name: Würth Elektronik WE-UCF SMT Common Mode Line Filter
Subcategory: Surface Mount

744290121 Compliance

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

744290121 Estimated Pricing

Qty Low High
1+ $4.63 $4.63
50+ $4.29 $4.29
250+ $3.78 $3.78
500+ $3.52 $3.52
1,250+ $3.29 $3.29

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

744290121 Features

  • 120µH common mode inductance at 10 kHz.
  • Rated for 5.5A DC current with 40K rise.
  • Low 10.5mΩ maximum DC resistance.
  • Surface mount package with 4 flat leads.
  • RoHS and REACH compliant component.

744290121 Applications

  • Power line noise filtering applications.
  • Signal line common mode filtering.
  • DC/DC converter input/output filtering.
  • EMI suppression in electronic equipment.

744290121 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the inductance of the 744290121?

The inductance is 0.12 mH (120 µH) at 10 kHz and 50 mV, with a tolerance of ±30%.

What is the rated current of this common mode choke?

The maximum rated current is 5.5 A, based on a temperature rise of 40 K.

What is the operating temperature range?

The operating temperature range is -40°C to +125°C.

Is the 744290121 RoHS compliant?

Yes, it is RoHS3 compliant as per directive 2011/65/EU and 2015/863.

What is the package type for this part?

It is a surface mount package described as Horizontal, 4 Flat Lead.

What is the DC resistance of the 744290121?

The maximum DC resistance is 10.5 mΩ at 20°C.

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