615008138021 Vertical THT Modular Jack Unshielded WR-MJ Series

615008138021 Vertical​ RJ45 Jack Overview:

The 615008138021 is a single-port, 8P8C (8-position, 8-contact) modular jack from the WR-MJ series. It is commonly referred to as an RJ45 connector and is designed for through-hole mounting (THT) in a vertical orientation. This unshielded connector is engineered for reliability in general electronic equipment and data communication systems.

• Data and Telecommunications
• Local Area Networks (LAN) and Ethernet
• Internet of Things
• Smart Buildings
• General industrial and consumer electronics that require a standard network interface.

Quick Details:

615008138021 Datasheet - Dimensions: 

615008138021 Datasheet - Recommended Hole Pattern:

FAQ About 615008138021 Vertical 8P8C Jack

1. What Ethernet speed or category does 615008138021 support?

• Rated as Cat3 (series level)
• Some distributors list Cat5 compatibility (application-dependent)

Engineering interpretation:

• Suitable for 10/100 Mbps Ethernet
• Not recommended for stable Gigabit (1000Base-T) designs

2. What is the mounting type and orientation?

• Mounting: Through-Hole (THT)
• Orientation: Vertical (Top-entry)
• Port: 1×1 single port

✔ Provides strong PCB retention
✔ Ideal for wave soldering processes

3. What are the electrical ratings of 615008138021 Vertical RJ45 Jack ?

From the 615008138021 datasheet:

• Rated Current: 1.5 A
• Working Voltage: 120 VAC
• Contact Resistance: ≤ 20 mΩ
• Insulation Resistance: > 500 MΩ
• Dielectric Withstand: 1000 VAC / 1 min

4. What materials are used in the connector?

• Housing: PBT (UL94-V0 flame rating)
• Contacts: Copper alloy
• Plating: Selective gold plating

✔ Ensures durability and corrosion resistance

5. What is the operating temperature range?

• Operating Temperature: -25°C to +85°C

6. How durable is the connector (mating cycles)?

• Rated durability: 500 mating cycles

Suitable for standard commercial applications
Not ideal for high-cycle industrial plugging

7. What applications is 615008138021 RJ45 jack best suited for?

Recommended:

• Consumer networking devices
• Embedded systems
• Cost-sensitive designs
• Low EMI environments

⚠ Not recommended:

• Industrial Ethernet
• High-speed Gigabit systems
• High EMI environments
• PoE applications

8. Is the 615008138021 RJ45 jack shielded?

No — it is unshielded.

The datasheet and distributor data clearly confirm this connector is without EMI shielding, meaning it does not include a metal shielding can.

This makes it suitable for low-EMI environments but not for noise-sensitive or industrial designs.

9. Does 615008138021 RJ45 jack include magnetics (ICM)?

No — it is a pure connector without magnetics.

• No integrated transformer
• No filtering components

✔ Requires external LAN transformer / PHY-side magnetics in circuit design.

10. Does 615008138021 have built-in LEDs?

No — no LEDs or light pipes included.

• No link/activity indicators
• Requires external LEDs if needed

✔ Advantage: simplifies structure and reduces cost
✔ Trade-off: no visual diagnostics

11. What should engineers pay attention to when using this part?

Key design considerations:

• Add external magnetics (LAN transformer)
• Ensure PCB footprint compatibility
• Evaluate signal integrity for >100Mbps
• Consider EMI shielding at system level