Spezifikationen
L70B-M39 is a compact surface-mount GPS positioning receiver module manufactured by Quectel, built on MediaTek MT3339 positioning chipset for low-power satellite navigation and location data output. This model has been marked obsolete by the manufacturer.
Suffix Explanation
L70B-M39 is the complete orderable part number of the L70 series basic GPS positioning module. Standard factory shipment adopts tape-and-reel packaging with 500 units per reel; cut tape and loose tray packing are also available.
1. Core Positioning & RF Specifications
- Satellite system supported: GPS only, operating frequency at 1575.42 MHz
- Channel configuration: 66 search channels, 22 real-time tracking channels
- Acquisition sensitivity: -148 dBm; tracking sensitivity: -165 dBm
- Default baud rate of UART communication port: 115200 bps
- Supported data protocols: Standard NMEA-0183 and customizable PMTK command protocol
- Cold start positioning time: Less than 29 seconds under open sky environment
- Hot start positioning time: Less than 1 second with valid ephemeris data
2. Electrical Power Parameters
- Operating supply voltage range: 2.8 V ~ 4.3 V, typical recommended input voltage 3.3 V
- Average working current: Around 25 mA during normal positioning
- Supports backup coin battery power supply for retaining satellite almanac data to shorten restart positioning time
- No integrated antenna; external passive or active GPS antenna is required for signal reception
3. Package & Mechanical Information
- Package form: 18-pin SMD surface mount module
- Overall dimension: 10.1 mm × 9.7 mm × 2.5 mm ultra-miniature thickness design
- Moisture Sensitivity Level: MSL 3, reflow soldering must be finished within 168 hours after opening the moisture barrier package
- Standard reflow temperature profile complies with common SMT assembly specifications
4. Environmental & Compliance Standards
- Continuous operating temperature range: -40 ℃ ~ +85 ℃
- Fully RoHS lead-free compliant and meets REACH restricted substance requirements
- Stable anti-interference performance for outdoor and indoor weak-signal positioning scenarios
5. Typical Application Scenarios
Vehicle tracking terminals, bicycle and electric scooter location monitoring devices Portable outdoor equipment, hiking recorders and wearable sports positioning gadgets Asset management, cargo logistics and container GPS location trackers Industrial handheld measuring instruments and unattended equipment geographic positioning modules Smart pet trackers, anti-lost tags and low-power IoT terminal positioning units
LXB Semicon supplies original Quectel L70B-M39 compact SMD GPS navigation receiver module
