4G Module
Product Features
The Quectel EM05-G is an LTE Cat 4 module designed for IoT/M2M applications. It supports multi-mode networks (LTE-FDD/TDD, WCDMA, CDMA, etc.) and uses an M.2 form factor, making it suitable for industrial routers, vehicle-mounted devices, digital signage, and other scenarios. Its core features include:
- Global Band Coverage: Supports multiple bands including LTE-FDD/TDD and WCDMA, compatible with major global operators.
- High-Speed Transmission: Downlink rate up to 150 Mbps, uplink rate up to 50 Mbps.
- Multi-OS Compatibility: Supports Windows/Linux/Android drivers, with integrated DFOTA and optional GNSS.
- Industrial-Grade Reliability: Operating temperature range -30°C to +70°C, extended temperature -40°C to +85°C.
Model Comparison
| Model | Region/Carrier | Supported Network Standards | Dimensions (mm) | Temperature Range |
|---|---|---|---|---|
| EM05-CN | China, Thailand, India | LTE-FDD/TDD, WCDMA, CDMA | 30.0×42.0×2.3 | -30°C~+70°C |
| EM05-E | Europe, Australia, New Zealand | LTE-FDD/TDD, WCDMA | 30.0×42.0×2.3 | -30°C~+70°C |
| EM05-G | Global | LTE-FDD (B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B18/B19/B20/B25/B26/B28/B66/B71) | 30.0×42.0×2.3 | -40°C~+85°C (Extended) |
Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage | 3.135 V ~ 4.4 V (Typical 3.3 V) |
| Operating Current (LTE-FDD) | Max 1005 mA (B71 Band) |
| Operating Temperature | -30°C ~ +70°C (Standard); -40°C ~ +85°C (Extended) |
| Storage Temperature | -40°C ~ +90°C |
| Antenna Interface Impedance | 50 Ω |
| USB Interface | USB 2.0 High-Speed (480 Mbps) |
RF Performance
| Network Standard | Downlink Rate | Uplink Rate | Supported Band Examples |
|---|---|---|---|
| LTE Cat 4 | 150 Mbps | 50 Mbps | B1/B2/B3/B4/B5/B7/B8/B12/B13/B14, etc. |
| DC-HSDPA | 42 Mbps | 5.76 Mbps | WCDMA B1/B2/B4/B5/B6/B8/B19 |
Interface Description (M.2 Key B)
Pin Definition Table
| Pin Type | Pin Name | Function Description |
|---|---|---|
| Power | VCC | Main power input (3.3 V) |
| Ground | GND | Ground |
| USB Interface | USB_DP/USB_DM | USB 2.0 differential data lines (90 Ω impedance matching) |
| SIM Interface | USIM1_DATA/CLK | 1.8 V/3.0 V SIM card data and clock signals |
| Control Signal | RESET# | Module reset (active low) |
| RF Interface | ANT_MAIN | Main antenna interface (LTE/WCDMA) |
| GNSS Interface | ANT_DRX/ANT_GNSS | Diversity Receive/GNSS antenna interface (optional) |
Usage Instructions
Key Hardware Design Points
-
Power Supply Design
- Requires a regulated 3.3 V power supply; transient voltage must be ≤4.7 V.
- Reference circuit must include filter capacitors (e.g., 220 μF tantalum capacitor + 100 nF ceramic capacitor).
-
Antenna Connection
- Main antenna (ANT_MAIN) and diversity antenna (ANT_DRX) must use 50 Ω RF cables.
- GNSS antenna must support L1 band (1559~1609 MHz).
-
SIM Card Interface
- Supports 1.8 V/3.0 V SIM cards; place close to the module to minimize signal interference.
- Hot-swap detection pin (USIM_DET) requires resistor voltage divider protection.
-
Firmware Upgrade
- Update firmware via USB using DFOTA or QFlash tools.
Physical Dimensions
Dimensional Description
- Dimensions: 42.0 mm (L) × 30.0 mm (W) × 2.3 mm (H)
- Mounting Holes: 4 × M2 threaded holes; thermal pad recommended for heat dissipation
