MPN

Wurth Elektronik Through Hole LAN Ethernet Transformer, 85 °C 16.2 mm, -40 °C 16.9mm 17 mm

RS Stock No.:: 814-9875
Distrelec Article No.:: 304-23-843
Mfr. Part No.:: 74990101210
Brand:: Wurth Elektronik

Wurth Elektronik Through Hole LAN Ethernet Transformer, 85 °C 16.2 mm, -40 °C 16.9mm 17 mm

Subtotal (1 unit)*

£6.74

(exc. VAT)

£8.09

(inc. VAT)

FREE delivery for orders over £60.00

In Stock

36 unit(s) ready to ship
Plus 3,844 unit(s) shipping from 20 October 2026

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

Units	Per unit
1 +	£6.74

*price indicative

Development Kit Box with a flash stating "Win"

Win A Würth Elektronik Lighting Development Kit

Spend as little as £1 and win a Würth Elektronik Lighting Kit, complete with exclusive follow-up technical support from the experts themselves. Promotion ends 30th November 2025.

Claim my Lighting Kit

RS Stock No.:: 814-9875
Distrelec Article No.:: 304-23-843
Mfr. Part No.:: 74990101210
Brand:: Wurth Elektronik

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Wurth Elektronik
	Number of Outputs	1
	Product Type	LAN Ethernet Transformer
	Insertion Loss	-1dB
	Mount Type	Through Hole
	Depth	17mm
	Length	16.2mm
	Inductance	350μH
	Width	16.9mm
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	85°C
	Supported Ethernet Standards	10/100 Base
	Turns Ratio	1:1
	Maximum Operating Frequency	100MHz
	Minimum Operating Frequency	1MHz
	Standards/Approvals	RoHS

	Select all
	Brand Wurth Elektronik
	Number of Outputs 1
	Product Type LAN Ethernet Transformer
	Insertion Loss -1dB
	Mount Type Through Hole
	Depth 17mm
	Length 16.2mm
	Inductance 350μH
	Width 16.9mm
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature 85°C
	Supported Ethernet Standards 10/100 Base
	Turns Ratio 1:1
	Maximum Operating Frequency 100MHz
	Minimum Operating Frequency 1MHz
	Standards/Approvals RoHS

COO (Country of Origin):: CN

Wurth Elektronik LAN Ethernet Transformer, 350μH Inductance, 1:1 Turns Ratio - 74990101210

This LAN Ethernet transformer is a through-hole PCB-mounted isolation component designed for 10/100 Base network interfaces. It provides galvanic separation for signal lines across a wide frequency span and is intended for integration where standard Ethernet signalling and board-level mounting are required.

Features and Benefits:

• 350μH inductance reduces common-mode noise for cleaner links
• 1:1 turns ratio preserves signal amplitude for balanced coupling
• Insertion loss -1dB maintains signal integrity across link
• Operates from 1MHz to 100MHz for Ethernet frequency coverage
• -40 to 85°C rating supports extended temperature deployments

Applications

• Suitable for 10/100Base-T isolation on network Interface boards
• Ideal for industrial Ethernet equipment requiring through-hole mounting
• Used with magnetics sockets on legacy PCB designs
• Can be used for retrofit Ethernet port isolation in appliances
• Suitable for educational and prototyping boards needing robust magnetics

What mounting method does it require?

It fits through-hole PCB mounting and is intended for soldered pins on board assemblies.

Which Ethernet speed standards does it support?

It supports 10/100 Base operation suitable for standard Fast Ethernet links.

What environmental temperature range can it tolerate?

It is rated to function between -40°C and 85°C.

How many outputs are provided for signal coupling?

The component provides a single output winding for the required interface.

Does it comply with any material restriction directives?

It is RoHS-compliant.

Be the first to know about our latest products and offers

Email address

The personal information you provide to us when signing up to this mailing list will be processed in line with the Privacy Policy