TF Card (TransFlash Card)
A TF card (TransFlash Card), also known as a microSD card, is a compact and removable flash memory storage medium. With advantages such as high compatibility, low cost, and easy replacement, it is widely used in portable electronic devices including body cameras, dashcams, surveillance cameras, and drones.
1. Basic Specifications
| Parameter | Description |
|---|---|
| Physical Dimensions | 15mm × 11mm × 1mm |
| Standard Interface | microSD standard, supports SPI / UHS protocols |
| Capacity Range | Typically 8GB ~ 512GB (some models up to 1TB) |
| File System | FAT32 (≤32GB), exFAT (≥64GB) |
2. Application of TF Cards in Body Cameras
In body cameras, TF cards are commonly used as either the primary or secondary storage medium, suitable for recording and storing:
- Video recordings (MP4 format)
- Photographs (JPG format)
- Audio recordings (WAV format)
- System logs and metadata
TF cards are easily replaceable in the field, making them ideal for portable usage and often used as a backup solution alongside built-in eMMC storage.