The HY911105A is a single-port 10/100Base-T RJ45 connector with integrated magnetics and LEDs, widely used in Ethernet-enabled embedded systems, industrial controllers, and network devices.

With onboard transformer isolation and LED indicators, HY911105A helps simplify PCB design, reduce BOM cost, and ensure IEEE 802.3 compliant Ethernet performance.

✔ Suitable for volume production
✔ Widely available and easy to source
✔ Commonly used as a drop-in reference design part

Key Features of HY911105A

• Single-port RJ45 (8P8C), 10/100Base-T
• Integrated magnetics (no external transformer required)
• Built-in LEDs for Link / Activity indication
• 1500 Vrms isolation (Ethernet standard compliant)
• ≥350 µH OCL @ 100 kHz, 8 mA
• Through-hole PCB mounting, right-angle orientation
• Shielded design for EMI protection
• RoHS compliant

Electrical & Mechanical Specifications

HY911105A Datasheet & Drawings

LINK-PP LPJ0011FBNL single-port 10/100Base-T RJ45 connectors with integrated magnetics is often considered functionally compatible with HY911105A.

Always verify pinout, LED polarity, and footprint before direct replacement.

Typical Applications

HY911105A is commonly used in:

• Ethernet-enabled embedded boards
• Routers, switches, and access devices
• IP cameras and security systems
• Industrial control and automation equipment
• IoT gateways and communication modules

FAQ

1. Is HY911105A suitable for 100 Mbps Ethernet?
Yes. It fully supports IEEE 802.3 10/100Base-T Ethernet applications.

2. Does HY911105A require an external transformer?
No. The magnetics are integrated inside the RJ45 connector.

3. Can HY911105A be replaced by HR911105A?
In many designs, yes. However, pinout and LED configuration should be verified before substitution.

4. Is HY911105A RoHS compliant?
Yes. It is suitable for RoHS-compliant products.