634108149621 8P8C RJ45 Vertical SMT WR-MJ Cat 3 Modular Jacks
8P8C Vertical SMT Ethernet Connector Overview
The 634108149621 WR-MJ Cat 3 Modular Jack is a single-port 8P8C vertical SMT RJ45 connector designed for reliable Ethernet connectivity in networking and embedded electronic systems.
Developed by Würth Elektronik, this modular jack belongs to the WR-MJ series and supports Category 3 Ethernet applications while maintaining compatibility with higher network categories under certain conditions.
With tape-and-reel packaging, soldering tab reinforcement, and reflow-compatible UL94-V0 housing, the connector is optimized for automated SMT assembly and stable long-term electrical performance.
It is widely used in network devices, IoT equipment, and smart building infrastructure requiring compact and reliable Ethernet interfaces.
Specifications of 634108149621 Vertical RJ45 Jack
1. Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 634108149621 |
| Series | WR-MJ Modular Jack |
| Connector Type | RJ45 |
| Number of PINs | 8P8C |
| Ports | 1×1 |
| Orientation | Vertical |
| Mounting Type | SMT |
| Shielding | Plastic (Unshielded) |
| Soldering Tab | Yes |
| EMI Fingers | No |
| LED Indicator | No |
| Packaging | Tape & Reel / Mylar |
| Application System | CAT 3 Ethernet |
2. Electrical Specifications
| Parameter | Symbol | Test Conditions | Value | Tolerance |
|---|---|---|---|---|
| Rated Current | IR | — | 1.5 A | — |
| Working Voltage | — | AC | 120 V | — |
| Withstanding Voltage | — | 1 minute | 1000 V AC | — |
| Contact Resistance | R | — | ≤ 20 mΩ | Max |
| Insulation Resistance | RISO | — | ≥ 500 MΩ | Min |
The 634108149621 Cat 3 RJ45 Modular Jack is designed to provide stable electrical performance for Ethernet and communication interfaces.
Key electrical characteristics include:
- 1.5 A rated current capacity, ensuring reliable signal and power transmission.
- 120 V AC working voltage, suitable for standard network equipment.
- 1000 V AC dielectric withstand capability, providing strong insulation protection.
- Low contact resistance (≤20 mΩ) to maintain signal integrity.
- High insulation resistance (≥500 MΩ) for improved electrical isolation.
3. Material Properties
| Parameter | Specification |
|---|---|
| Insulator Material | LCP (Liquid Crystal Polymer) |
| Insulator Flammability Rating | UL94 V-0 |
| Insulator Color | Black |
| Contact Material | Copper Alloy |
| Contact Plating | Selective Gold |
| Contact Type | Stamped |
634108149621 Datasheet
Design Advantages
1. Optimized for Automated SMT Assembly
The tape-and-reel packaging allows high-speed pick-and-place assembly, improving manufacturing efficiency in large-volume electronics production.
2. Reliable PCB Retention
The integrated soldering tab enhances mechanical stability, ensuring secure attachment to the PCB during operation and repeated cable insertion.
3. Flexible WR-MJ Series Platform
The WR-MJ modular jack family offers multiple configuration options including:
- Shielded or unshielded versions
- Integrated EMI springs
- Optional LED indicators
- Vertical or horizontal mounting orientations
This flexibility enables engineers to adapt the connector to a wide range of network device designs.
Key Features of the 634108149621 RJ45 Connector
- 8P8C RJ45 modular jack
- Vertical surface-mount (SMT) design
- Single port (1×1) configuration
- Soldering tab for improved PCB retention
- Shieldingless plastic housing
- Tape & Reel packaging for automated pick-and-place
- Reflow-compatible UL94-V0 insulator
- UL and cULus certified
- Designed for Cat 3 Ethernet applications
FAQs About 634108149621 Cat 3 RJ45 Modular Jack
Q1:What type of RJ45 connector is 634108149621?
A: The 634108149621 is a single-port vertical SMT RJ45 modular jack with an 8P8C configuration, designed for Category 3 Ethernet systems and compatible networking applications.
Q2: Is this RJ45 jack shielded?
A: No. The 634108149621 uses a plastic unshielded housing, which is suitable for many standard Ethernet applications where additional EMI shielding is not required.
Q3: What assembly method is used for this connector?
A: The connector uses surface-mount technology (SMT) and is supplied in tape-and-reel packaging, enabling automated pick-and-place assembly in high-volume PCB production.
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