# 74990111217 (Component)

## Description

1 Port RJ45 Through Hole 10/100 Base\-T, AutoMDIX

10/100Base\-T LAN transformer for Ethernet interfaces, providing 1:1 isolation and signal coupling for 10/100Base\-TX applications\. It is IEEE 802\.3u compliant, supports Auto MDI\-X, includes a 1500 Vrms/1 min hipot rating, and operates from \-40°C to \+85°C, making it suitable for Ethernet networking equipment and embedded network interfaces\. \#LANTransformer \#Ethernet \#10\_100BaseT \#IsolationTransformer \#WurthElektronik

## Component Details

- **Owner:** silicon\-yard
- **Created:** 8/24/2026
- **Last Updated:** 8/24/2026
- **Visibility:** Public
- **License:** https://creativecommons\.org/licenses/by/4\.0/
- **Part Type:** Ethernet Connector
- **Manufacturer Name:** Würth Elektronik
- **Mount:** Through Hole
- **Compliance:** Green
- **Datasheet URL:** https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/23249588ec3aca78cf949bf9807f8e6541e09432835dee379a7c381d94734e5e\.pdf
- **Manufacturer Part Number:** 74990111217
- **Symbol Style:** parametric\-v1
- **Used in:** 2 projects

## Distributor Pricing (qty 1)

*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*

| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Digi\-Key](https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/74990111217/4031593) | $8\.76 | 1\.1K |
| [Mouser](https://www.mouser.com/en/ProductDetail/Wurth-Elektronik/74990111217?qs=SaTeGCoDkn13kihkWsY%252FSw%253D%253D) | $9\.21 | 977 |

- **Part Type:** Connectors
- **Sub-Type:** Modular / Ethernet Connectors
- **Manufacturer:** Würth
- **MPN:** 74990111217
- **Mount Type:** Through Hole
- **Pin Count:** 14
- **Compliance:** Green
## Pins

| Pin | Name | Type |
|-----|------|------|
| 1 | TD\+ | Unspecified |
| 2 | TD\- | Unspecified |
| 3 | RD\+ | Unspecified |
| 4 | TCT | Unspecified |
| 5 | RCT | Unspecified |
| 6 | RD\- | Unspecified |
| 7 | NC\_1 | Unspecified |
| 8 | NC\_2 | Unspecified |
| 9 | A\_YELLOW | Unspecified |
| 10 | K\_YELLOW | Unspecified |
| 11 | A\_GREEN | Unspecified |
| 12 | K\_GREEN | Unspecified |
| MH3 | MH3 | Unspecified |
| MH4 | MH4 | Unspecified |

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*Generated from [https://flux\.ai/silicon\-yard/74990111217\~wl](https://flux.ai/silicon-yard/74990111217~wl)*