# Quectel BC660K-GL LTE Cat NB2 NB-IoT module [Quectel](https://www.quectel.com/) › [LPWA modules](https://www.quectel.com/lpwa-iot-modules/) › BC660K-GL Quectel BC660K-GL is a compact LTE Cat NB2 (NB-IoT) module for low-power IoT data and SMS applications. It measures 17.7 × 15.8 × 2.0 mm, uses an LCC package and supports a 2.2–4.3 V power supply. [Request a quote or samples](https://www.quectel.com/contact/) · [Official product page](https://www.quectel.com/product/lpwa-bc660k-gl-nb2/) · [Technical support](https://www.quectel.com/tech-support/) · [Product FAQ](#frequently-asked-questions) ## Product at a glance | Attribute | Product detail | | --- | --- | | Brand | Quectel | | Model | BC660K-GL | | Cellular technology | LTE Cat NB2 (NB-IoT) | | Dimensions | 17.7 × 15.8 × 2.0 mm | | Mounting / package | SMT / LCC | | Power supply | 2.2–4.3 V | | Published bands | B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B17 / B18 / B19 / B20 / B25 / B28 / B66 / B70 / B85 | | Services listed on the source page | SMS and data transmission; operator support required | | Migration families listed on the source page | M66, BC66 / BC66-NA, BC65 and BC68-GV; validate compatible-design details | Published peak data rates are not guaranteed field throughput. Series-level features, frequency bands and optional functions must be confirmed for the exact ordering code and firmware. ## Best for / use cases - **Smart metering and smart parking:** evaluate small periodic messages on an available NB-IoT network. - **Agricultural and environmental monitoring:** validate site coverage and energy per reporting cycle. - **Smart-city sensors and home appliances:** assess NB-IoT coverage, reporting intervals and command latency. - **Migration from GSM/GPRS or earlier NB-IoT designs:** review the relevant compatibility and hardware design documents. ## Key features and benefits - **NB-IoT focus:** LTE Cat NB2 supports applications designed around small data messages. - **Compact package:** the 17.7 × 15.8 × 2.0 mm LCC package supports space-constrained SMT designs. - **Supply flexibility:** the source feature list specifies a 2.2–4.3 V supply range. - **Multiple supported bands:** compare the listed bands with the intended operator’s NB-IoT service. - **Migration resources:** compatible-design documents support evaluation of transitions from named Quectel families. ## Size, fit and design resources Use the 2D/3D dimensions, footprint, hardware design and reference-design resources listed below to check mechanical fit and PCB integration. Match the antenna to the selected cellular bands and, where applicable, GNSS requirements. The [official product page](https://www.quectel.com/product/lpwa-bc660k-gl-nb2/) provides product imagery and the source resource catalog. ## LTE-M vs NB-IoT: which technology fits the application? LTE-M (LTE Cat M1) generally suits moving devices and applications needing more responsive communication. NB-IoT (including LTE Cat NB2) suits small, periodic messages from meters and sensors where the network and application tolerate longer response times. Coverage, roaming and available features depend on the operator and deployment country. | Application requirement | Selection guidance | | --- | --- | | Mobile assets, wearables or responsive commands | Evaluate LTE-M and test mobility and response time on the intended network. | | Fixed meters and periodic environmental readings | Evaluate NB-IoT with representative payloads, reporting intervals and indoor coverage. | | Battery life | Measure the complete device duty cycle, signal conditions and network-granted power-saving settings. | | Remote firmware updates | Validate update size, transfer time, recovery and energy use on the selected mode. | Technology context: [AWS guidance on LTE-M and LPWAN integration](https://docs.aws.amazon.com/whitepapers/latest/implementing-lpwan-solutions-with-aws/lte-m.html). These are technology-level selection guidelines, not measured performance promises for a finished device. ## Compare BG95, BG77 and BC660K-GL | Selection factor | BG95 series | BG77 | BC660K-GL | | --- | --- | --- | --- | | Cellular technology | LTE Cat M1 / Cat NB2 / EGPRS; confirm exact variant | LTE Cat M1 / Cat NB2 | LTE Cat NB2 (NB-IoT) | | Dimensions | 23.6 × 19.9 × 2.2 mm | 14.9 × 12.9 × 1.7 mm | 17.7 × 15.8 × 2.0 mm | | Package | SMT, LGA | SMT, LGA | SMT, LCC | | Main selection reason | Multimode design and migration from existing Quectel families | Compact LTE-M / NB-IoT design with integrated GNSS | NB-IoT design for small, periodic data messages | | Design check | Variant, bands, network modes and migration details | Board space, antenna integration and operator support | NB-IoT coverage, bands and reporting requirements | [BG95 product details](https://www.quectel.com/product/lpwa-bg95-cat-m1-cat-nb2-egprs-series/) · [BG77 product details](https://www.quectel.com/product/lte-bg77-cat-m1-nb2/) · [BC660K-GL product details](https://www.quectel.com/product/lpwa-bc660k-gl-nb2/) Dimensions alone do not establish pin, electrical, firmware or antenna compatibility. Confirm the hardware design and compatible-design documents for the exact ordering code. ## Pricing, supply and project support [Contact Quectel](https://www.quectel.com/contact/) with the product name, deployment country, operator, annual volume and sample requirements to request a quotation and confirm availability. Confirm lead time, delivery, warranty and return terms in the supplier quotation or order agreement. ## Integration, reliability and total cost 1. Match the exact module variant and supported bands to the deployment countries and operators; confirm required approvals for the finished product. 2. Review the footprint, power supply, antenna layout and reference design before committing the PCB. 3. Test registration, reconnect behavior, weak-signal operation and data delivery on the intended network. 4. Measure the energy per reporting cycle and validate power-saving timers against required reachability. A sleeping device may not be immediately reachable. 5. Compare total cost: module, antenna, PCB changes, data plan, certification, firmware maintenance and field service. Low-power operation and reusable design resources can reduce service or development effort when validated in the actual design; savings are not guaranteed. [Technical support](https://www.quectel.com/tech-support/) · [LPWA module family](https://www.quectel.com/lpwa-iot-modules/) ## Frequently asked questions ### Does BC660K-GL support LTE-M? BC660K-GL is specified as an LTE Cat NB2 (NB-IoT) module. If LTE Cat M1 is required, compare BG77 or the appropriate BG95 variant instead. ### What are the dimensions and supply range? BC660K-GL measures 17.7 × 15.8 × 2.0 mm, uses an LCC package and supports a 2.2–4.3 V supply range, according to the source overview and feature list. ### Which applications suit BC660K-GL? The source overview lists smart metering, bike sharing, smart parking, smart cities, smart safety, asset tracking, home appliances and agricultural/environmental monitoring. Validate NB-IoT availability and response-time requirements for the specific deployment. ### Is BC660K-GL suitable for moving asset trackers? The source lists asset tracking as an application, but this does not establish seamless mobility on every NB-IoT network. Test the required movement pattern and operator behavior; evaluate LTE-M alternatives when mobility and responsiveness are central requirements. ### Can BC660K-GL reduce total project cost? Its source page emphasizes low cost, low power and compatibility with named Quectel families. Assess module price, PCB reuse, antenna, SIM/data plan, certification and service costs using an actual supplier quote and device tests. ## Evaluation kits and antennas The related-products catalog below links to evaluation tools and antennas shown on the source product page. Confirm the appropriate evaluation board, module variant, frequency coverage, connector and enclosure requirements with Quectel before ordering. ## Product Brochure Quectel_Product_Brochure_V8.6.pdf [Download](https://www.quectel.com/content/uploads/2026/05/Quectel_Product_Brochure_V8.6.pdf) ## Documentation and resources Some downloads require a Quectel account. Verify document applicability to the exact module, firmware and ordering code. - **Application Note** - [Quectel_BC660K-GL_Security_Feature_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) (File Size: 213.71 KB) - **Design Note** - [Quectel_BC660K-GL&BC950K-GL_Terminal_Applications_Design_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) (File Size: 198.74 KB) - **DFOTA Application Note** - [Quectel_BC660K-GL&BC950K-GL_DFOTA_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) (File Size: 336.56 KB) - **Throughput Test Guide** - [Quectel_BC660K-GL&BC950K-GL_Throughput_Test_Guide_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) (File Size: 298.38 KB) - **PSM Application Note** - [Quectel_BC660K-GL&BC950K-GL_PSM_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) (File Size: 451.18 KB) - **TCP(IP) Application Note** - [Quectel_BC660K-GL&BC950K-GL_TCP(IP)_Application_Note_V1.3](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) (File Size: 369.98 KB) ### [Quectel_BC660K-GL&BC950K-GL_LwM2M_Application_Note_V1.3](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 1.16 MB ### [Quectel_BC660K-GL&BC950K-GL_HTTP(S)_Application_Note_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 240.61 KB ### [Quectel_BC660K-GL&BC950K-GL_CoAP_Application_Note_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 247.08 KB ### [Quectel_BC660K-GL&BC950K-GL_SSL_Application_Note_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 237.50 KB ### [Quectel_BC660K-GL&BC950K-GL_MQTT_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 431.34 KB ### [Quectel_BC660K-GL&BC950K-GL_AT_Commands_Manual_V1.5](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 882.34 KB ### [Quectel_Android_RIL_Driver_aidl2_V4.7_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 2.01 MB ### [Quectel_Android_RIL_Driver_radio1.4_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 2.30 MB ### [Quectel_Android_RIL_Driver_radio1.5_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 2.36 MB ### [Quectel_Android_RIL_Driver_ndk_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 1.62 MB ### [Quectel_Android_RIL_Driver_radio1.6_V4.5_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 2.39 MB ### [Quectel_Android_RIL_Driver_radio1.5_OemHook_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 2.37 MB ### [Quectel_Android_RIL_Driver_aidl1_V4.7_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 1.68 MB ### [Quectel_Android_RIL_Driver_aidl3_V4.7_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 1.75 MB ### [Quectel_BC660K-GL-TE-B_User_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 1.22 MB ### [Quectel_BC660K-GL_Footprint&Part_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 707.97 KB ### [Quectel_BC660K-GL_Reference_Design_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 249.39 KB ### [Quectel_BC660K-GL_3D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 798.39 KB ### [Quectel_BC660K-GL_2D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 195.74 KB ### [Quectel_BC660K-GL&BC66&BC66-NA_Compatible_Reference_Design_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 266.63 KB ### [Quectel_BC660K-GL&BC680Z-EU_Compatible_Design_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 722.48 KB ### [Quectel_BC660K-GL&BC66&BC66-NA_Compatible_Design_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 547.88 KB ### [Quectel_BC660K-GL&BC950K-GL_Low_Power_Design_Guide_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 378.00 KB ### [Quectel_BC660K-GL_Hardware_Design_V1.6](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 1.93 MB ### [QFlash_V8.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 326.70 MB ### QMulti_DL_CMD_V4.4_EN File Size 178.96 MB ### [Quectel_BC660K-GL_Antenna_Tuning_Switch_Design_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 257.59 KB ### [Quectel_BC660K-GL&BC950K-GL_Log_Capture_Guide_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flpwa-bc660k-gl-nb2%2F) File Size 669.42 KB ## Related products ### [YF0028AA 4G adhesive mount FPC + cable dipole embedded antenna](https://www.quectel.com/product/yf0028aa-4g-adhesive-mount-antenna/) *23 March 2024* [Read more: YF0028AA 4G adhesive mount FPC + cable dipole embedded antenna](https://www.quectel.com/product/yf0028aa-4g-adhesive-mount-antenna/) ### [YSAN025XX DC~6GHz SMA female to IPEX MHF1 cable with an 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Product: BC660K-GL. [Official product source](https://www.quectel.com/product/lpwa-bc660k-gl-nb2/). [About Quectel](https://www.quectel.com/company). Product specifications in this summary are based on the existing Quectel product content reviewed on 28 October 2026. Confirm the current datasheet and ordering code for production designs.