WNM2021-3/TR

The WNM2021-3/TR is a common-mode choke for EMI suppression. Equivalent alternatives include:
- Murata DLW21HN series
- TDK ACT45B series
- Bourns 8120-RC
- Laird MI0805J
These offer similar inductance, current ratings, and EMI filtering performance. Always verify specs like impedance, current, and package size for compatibility. Check datasheets or distributors like Digi-Key, Mouser, or LCSC for exact matches.

The WNM2021-3/TR is a 3-pin common-mode choke designed for EMI suppression in high-speed data lines, such as USB, HDMI, and Ethernet.
### Pin Functions:
1. Pin 1 (Input): Connects to the signal line (e.g., D+ or differential pair).
2. Pin 2 (Output): Connects to the downstream circuit.
3. Pin 3 (Ground): Provides EMI filtering by shunting noise to ground.
### Key Features:
- Impedance: Typically 90Ω @ 100MHz for common-mode noise suppression.
- Current Rating: Up to 200mA.
- Package: Compact SMD (Surface Mount) design.
Used primarily for signal integrity improvement in high-frequency applications.

WNM2021-3/TR is a type of wireless network module commonly used in:
1. IoT Devices – Smart home systems, sensors, and wearables.
2. Industrial Automation – Remote monitoring and control in factories.
3. Telecommunications – Enhancing wireless connectivity in routers and modems.
4. Automotive – Vehicle telematics and infotainment systems.
5. Healthcare – Medical monitoring and diagnostic equipment.
6. Smart Agriculture – Precision farming and environmental sensing.
Its low power consumption, reliability, and compact design make it suitable for embedded wireless applications.

The WNM2021-3/TR is typically available in a SMD (Surface Mount Device) package, often as a SOT-23 or similar small outline transistor package. It is designed for surface mounting on PCBs, offering compact size and efficient performance for applications like signal switching or amplification. Check the datasheet for exact specifications.