Wurth Elektronik 4 mH 1.5 A Common Mode Choke 240 Ω 250V ac

RS stock no.:: 163-8143
Mfr. Part No.:: 744821240
Manufacturer:: Wurth Elektronik

Wurth Elektronik 4 mH 1.5 A Common Mode Choke 240 Ω 250V ac

Image representative of range

Subtotal (1 box of 300 units)*

R 13 384,20

(exc. VAT)

R 15 391,80

(inc. VAT)

FREE delivery for orders over R 1,500.00

Temporarily out of stock

Shipping from 01 March 2027

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit	Per Box*
300 +	R 44.614	R 13,384.20

*price indicative

RS stock no.:: 163-8143
Mfr. Part No.:: 744821240
Manufacturer:: Wurth Elektronik

Specification

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Wurth Elektronik
	Inductance	4mH
	Product Type	Common Mode Choke
	Maximum DC Current	1.5A
	Series	WE-CMB
	Test Frequency	10kHz
	Maximum Operating Temperature	125°C
	Minimum Operating Temperature	-40°C
	Automotive Standard	No
	Pin Count	4
	Choke Voltage	250V ac
	Mount Type	Through Hole
	Inductance Tolerance	±30 %
	Termination Style	Solder Pad
	Length	15.8mm
	Maximum DC Resistance	240Ω
	Standards/Approvals	VDE, REACH, ENEC, RoHS
	Depth	7.8mm
	Height	18mm

	Select all
	Brand Wurth Elektronik
	Inductance 4mH
	Product Type Common Mode Choke
	Maximum DC Current 1.5A
	Series WE-CMB
	Test Frequency 10kHz
	Maximum Operating Temperature 125°C
	Minimum Operating Temperature -40°C
	Automotive Standard No
	Pin Count 4
	Choke Voltage 250V ac
	Mount Type Through Hole
	Inductance Tolerance ±30 %
	Termination Style Solder Pad
	Length 15.8mm
	Maximum DC Resistance 240Ω
	Standards/Approvals VDE, REACH, ENEC, RoHS
	Depth 7.8mm
	Height 18mm

COO (Country of Origin):: CN

Wurth Elektronik WE-CMB Series Common Mode Choke, 4mH Inductance, 1.5A Maximum DC Current - 744821240

This common mode choke is a through-hole EMI suppression component designed to reduce differential noise in AC and DC applications. It operates across a wide temperature range and is suitable for installations requiring solder-pad termination and four-pin connection. The component meets several industry approvals and is intended for use where moderate current handling and noise attenuation are required.

Features and Benefits:

• ±30% inductance tolerance provides predictable filtering performance
• 4mH inductance improves high-frequency common-mode attenuation
• 1.5A maximum DC current supports moderate-power circuits
• 250V AC choke voltage enables use on mains-level lines
• Maximum operating temperature 125°C allows elevated-temperature operation

Applications

• Suitable for EMI suppression on power input lines
• Ideal for mains-interfaced filtering modules
• Used with control electronics requiring noise reduction
• Suitable for retrofit suppression in industrial equipment
• Can be used for filtering in consumer appliances

What pin configuration does it use?

It uses a four-pin layout with solder-pad termination for through-hole mounting.

What is the measured DC resistance limit?

The maximum DC resistance is specified as 240Ω.

Which environmental approvals does it carry?

It holds VDE, ENEC, RoHS and REACH compliance approvals.

What frequency was used for inductance testing?

Inductance was characterised at a test frequency of 10kHz.

What are the allowable operating temperatures?

The component is rated for use from -40°C up to 125°C.