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GNSS Module


MT3333 GPS Module With Antenna Integrated SKM81

SKM81 is an integrated module of a positioning module + antenna, supporting GPS / BDS / GLONASS, model score SKM81B, SKM81BC, SKM81D, SKM81DC!

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Chip MT3333
Receiver type  GPS,BDS,GLONASS
Dimension(L×W×H) 18*18*6.3(mm)

SKM81 is a positioning module + antenna integrated module, supports GPS/BDS/GLONASS, model number SKM81B, SKM81BC, SKM81D, SKM81DC! SKM81B, SKM81BC use MT3337 chip, SKM81D, SKM81DC use MT3333 chip. Shape: SKM81B is the same as SKM81D, SKM81BC is the same as SKM81DC!

It is based on the high-performance features of the single-chip architecture, Its –165dBm tracking sensitivity extends positioning coverage into place like urban canyons and dense foliage environment where the GNSS was not possible before. The small form factor and low power consumption make the module easy to integrate into portable devices like PNDs, mobile phones, cameras and vehicle navigation systems.



◆ Ultra high sensitivity: -165dBm

◆Extremely fast TTFF at low signal level

◆Built-in 12 multi-tone active interference canceller

◆ Ultra low power consumption

◆ ±10ns high accuracy time pulse (1PPS)

◆ Advanced Features: AlwaysLocate; AIC; EPO;EASY


◆ Small form factor: 18x18x6.3mm

◆ RoHS compliance (Lead-free)

◆ FCC,CE compliance


Parameter Specification
Receiver Type GPS,GLONASS,BD
Sensitivity Tracking:-165dBm Typical
Acquisition:-148dBm Typical
Accuracy Position:3.0m CEP50 without SA(Typical Open Sky)
Velocity:0.1m/s without SA
Timing (PPS):10ns RMS
Acquisition Time Cold Start:23s(Typical Open Sky)
Warm Start:2-3s
Hot Start:1s
Assisted GPS support EPO
Power Consumption Tracking:25mA
Navigation Data Update Rate Max 10Hz  Default 1Hz
Operational Limits Altitude:Max 18,000m
Velocity:Max 515m/s
Acceleration:Less than 4g

◆LBS (Location Based Service)

◆PND (Portable Navigation Device)

◆Vehicle navigation system

◆Mobile phone

1. who are we?
We are based in Guangdong, China, start from 2006,sell to North America(30.00%),Eastern Europe(15.00%),Western Europe(15.00%),Northern Europe(14.00%),Oceania(5.00%),South Asia(5.00%),Domestic Market(5.00%),South America(4.00%),Southeast Asia(3.00%),Africa(00.00%),Mid East(00.00%),Central America(00.00%),Southern Europe(00.00%).
2. how can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;