The ZC1003 is a surface-mount device (SMD) Z-axis coil designed for RFID applications, particularly in automotive systems such as Passive Keyless Entry (PKE) and Keyless Go. Operating at 125 kHz, it offers inductance values ranging from 0.735 mH to 9.00 mH, depending on the specific model. The coil features a low-profile design with dimensions of 10 mm x 10 mm x 3.2 mm, making it suitable for compact spaces. It provides high sensitivity and stable performance across a temperature range of -40°C to +125°C, ensuring reliability in various environmental conditions.