B-L072Z-LRWAN1 - LoRa/Sigfox Discovery Kit | STMicroelectronics
MPN: B-L072Z-LRWAN1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $49 | $49.00 |
| 10 | $46.55 | $465.50 |
| 100 | $44.1 | $4,410.00 |
| 500 | $41.65 | $20,825.00 |
| 1,000 | $39.2 | $39,200.00 |
B-L072Z-LRWAN1 Overview
A Discovery kit is a low-cost, ready-to-use evaluation platform that lets engineers prototype and validate a microcontroller or wireless technology before committing to a custom PCB. Within the STM32 ecosystem, the B-L072Z-LRWAN1 sits at the entry level of LoRaWAN development tools, above bare modules such as the CMWX1ZZABZ-091 and below full gateway kits such as the P-NUCLEO-LRWAN2.
The kit's key differentiators are its all-in-one Murata module (MCU plus radio in a single certified package), its 157 dB link budget for long-range sub-GHz communication, its ultra-low-power STM32L072CZ core that supports multi-year battery operation, and its integrated ST-LINK/V2-1 probe that eliminates the need for an external programmer. The board also carries Arduino-compatible headers for expansion with shields.
The CMWX1ZZABZ-091 module combines the STM32L072CZ MCU and the SX1276 transceiver in a single shielded package, simplifying RF layout and regulatory certification. The SX1276 uses LoRa spread-spectrum modulation for robust long-range links and also supports FSK/OOK and Sigfox modes, making the kit a multi-protocol LPWAN development platform.
Typical applications include LoRaWAN end-node prototyping, Sigfox device development, smart-metering and smart-city sensor nodes, agricultural and environmental monitoring, asset tracking, and industrial IoT gateways. The 157 dB link budget supports kilometer-scale links in urban and rural environments.
When designing with the kit, connect the supplied 900 MHz 50-ohm stub antenna to SMA connector CN10 before any RF transmission; operating without a load can damage the transceiver. Power the board through the USB connector or the external supply header, and use the ST-LINK/V2-1 virtual COM port for firmware download and serial debug.
This page synthesizes distributor pricing, drop-in board alternatives, and practical design notes that are not consolidated in the manufacturer data brief, giving engineers a single reference for evaluation and sourcing decisions.
Drop-in alternatives for B-L072Z-LRWAN1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with B-L072Z-LRWAN1 (same form factor and footprint).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
P-NUCLEO-LRWAN2
✅ Drop-In📋 Reference alternative (not in catalog)
I-NUCLEO-LRWAN1
✅ Drop-In📋 Reference alternative (not in catalog)
P-NUCLEO-LRWAN1
✅ Drop-In📋 Reference alternative (not in catalog)
CMWX1ZZABZ-091
✅ Drop-In✓ In Stock
$4.57 / Unit
View Datasheet →NUCLEO-L073RZ
✅ Drop-In📋 Reference alternative (not in catalog)
B-L072Z-LRWAN1 Specifications (manufacturer-published)
| Product Type | LoRa/Sigfox Discovery kit (development board) |
| Core Module | Murata CMWX1ZZABZ-091 all-in-one open module |
| Microcontroller | STM32L072CZ ARM Cortex-M0+ |
| Flash Memory | 192 KB |
| RAM | 20 KB |
| Sub-GHz Transceiver | Semtech SX1276 |
| Maximum Link Budget | 157 dB |
| Supported Protocols | LoRaWAN, Sigfox, FSK/OOK |
| Antenna Connector | SMA (CN10), 50 ohm, 900 MHz stub antenna supplied |
| On-board Debugger | ST-LINK/V2-1 with virtual COM port |
| Expansion Headers | Arduino Uno R3 compatible |
| Packaging | Individual box (Discovery kit) |
B-L072Z-LRWAN1 Interfaces & Connectors
B-L072Z-LRWAN1 exposes the following interfaces and connectors as published by the manufacturer: GPIO. Expansion header pinout, connector pin numbering, and electrical limits are defined in the manufacturer documentation.
| GPIO | Arduino Uno R3 compatible |
Refer to the manufacturer documentation for the full expansion header pinout and connector pin numbering.
Typical Applications
B-L072Z-LRWAN1 is suitable for 6 applications: LoRaWAN End-Node Prototyping, Sigfox Device Development, Smart Metering and Smart City Sensors, Agricultural and Environmental Monitoring, Asset Tracking and Logistics, Industrial IoT Gateways and Nodes.
LoRaWAN End-Node Prototyping
The B-L072Z-LRWAN1 is the reference platform for LoRaWAN end-node prototyping because it combines the STM32L072CZ MCU and Semtech SX1276 transceiver in the Murata CMWX1ZZABZ-091 module, delivering a 157 dB link budget for kilometer-scale uplinks. Engineers flash LoRaWAN stack examples through the on-board ST-LINK/V2-1 and join a network server using the supplied 900 MHz stub antenna on SMA connector CN10. The ultra-low-power Cortex-M0+ core with 192 KB Flash and 20 KB RAM supports Class A and Class C node firmware, while the Arduino-compatible headers allow sensor shields to be added without custom PCB work. The trade-off is that the Discovery board is an evaluation tool, not a production module, so final designs migrate to the CMWX1ZZABZ-091 module.
Recommended
Sigfox Device Development
The B-L072Z-LRWAN1 supports Sigfox development because the SX1276 transceiver can be configured for Sigfox uplink modulation in addition to LoRa and FSK/OOK. ST positions the kit as a LoRa/Sigfox Discovery tool, so engineers can evaluate Sigfox coverage and message payload behavior before committing to a Sigfox-certified module. The 157 dB link budget and sub-GHz operation give the same long-range advantage Sigfox networks rely on, and the on-board ST-LINK/V2-1 virtual COM port simplifies serial debug during field trials. The limitation is that Sigfox certification is performed at module level, so production designs use a certified Sigfox module rather than the Discovery board itself.
Recommended
Smart Metering and Smart City Sensors
The B-L072Z-LRWAN1 fits smart metering and smart-city sensor prototyping because its STM32L072CZ ultra-low-power MCU and SX1276 radio support multi-year battery operation with 157 dB link budget for urban propagation. In a typical evaluation, the board acts as a water or gas meter node that periodically reports readings over LoRaWAN to a gateway, using the Arduino headers to attach a pulse-counting or I2C sensor shield. The integrated ST-LINK/V2-1 allows firmware updates and power profiling during development. The trade-off is that the Discovery board's power consumption is higher than a production module design, so battery-life estimates must be validated on the final CMWX1ZZABZ-091-based PCB.
Recommended
Agricultural and Environmental Monitoring
The B-L072Z-LRWAN1 is used in agricultural and environmental monitoring prototypes because LoRa's 157 dB link budget reaches sensors deployed across fields and remote sites where cellular coverage is weak. The board's STM32L072CZ MCU with 192 KB Flash stores calibration data and buffered measurements, while the SX1276 radio transmits soil-moisture, temperature, and humidity readings to a LoRaWAN gateway. The SMA connector accepts the supplied 900 MHz stub antenna or an external gain antenna for extended range. Designers should note that the Discovery board is not weather-sealed, so field deployments require an enclosure and the production design should move to the CMWX1ZZABZ-091 module for lower power and smaller size.
Recommended
Asset Tracking and Logistics
The B-L072Z-LRWAN1 supports asset-tracking prototypes because LoRaWAN and Sigfox both provide low-power wide-area coverage suitable for tracking pallets, containers, and equipment across sites. The board's STM32L072CZ MCU processes GPS or accelerometer data from Arduino-header shields, and the SX1276 transceiver reports location or status updates with a 157 dB link budget. The on-board ST-LINK/V2-1 enables rapid firmware iteration during pilot deployments. The trade-off is that the Discovery board is larger than a production tracker, so final designs shrink to the CMWX1ZZABZ-091 module plus a custom antenna, and battery life must be re-measured on that hardware.
Recommended
Industrial IoT Gateways and Nodes
The B-L072Z-LRWAN1 is used in industrial IoT node prototypes because it provides a complete LoRaWAN/Sigfox stack platform with an STM32L072CZ MCU, SX1276 radio, and ST-LINK/V2-1 debugger in a single board. Engineers attach industrial sensor shields through the Arduino-compatible headers and validate end-to-end communication with a gateway such as the P-NUCLEO-LRWAN2 before designing a custom node. The 157 dB link budget supports reliable links in noisy factory environments. The limitation is that the Discovery board is an evaluation tool; production nodes should use the CMWX1ZZABZ-091 module with industrial-temperature qualification and proper EMC filtering.
Recommended
Recommended Products Summary
Engineering reference data for B-L072Z-LRWAN1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | P-NUCLEO-LRWAN2 | I-NUCLEO-LRWAN1 | P-NUCLEO-LRWAN1 | CMWX1ZZABZ-091 | NUCLEO-L073RZ |
|---|---|---|---|---|---|---|
| Package | Single Discovery board with SMA and Arduino headers | Two-board kit (NUCLEO + expansion) | NUCLEO expansion board | Two-board kit (NUCLEO + expansion) | Shielded module | NUCLEO-64 board |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Murata Manufacturing | STMicroelectronics |
| Microcontroller | STM32L072CZ Cortex-M0+ | STM32L073RZ Cortex-M0+ | Host NUCLEO MCU | STM32L0 Cortex-M0+ | STM32L072CZ Cortex-M0+ | STM32L073RZ Cortex-M0+ |
| Radio / Transceiver | Semtech SX1276 (in CMWX1ZZABZ-091) | SX1276-class LoRa radio | SX1276-class LoRa radio | SX1276-class LoRa radio | Semtech SX1276 | None (MCU only) |
| On-board Debugger | ST-LINK/V2-1 | ST-LINK/V2-1 (on NUCLEO) | None (uses host NUCLEO) | ST-LINK/V2-1 (on NUCLEO) | None (module) | ST-LINK/V2-1 |
| Arduino Headers | Arduino Uno R3 compatible | Arduino Uno R3 compatible (NUCLEO) | Arduino compatible via NUCLEO | Arduino Uno R3 compatible (NUCLEO) | None (module) | Arduino Uno R3 compatible |
| Protocol Support | LoRaWAN, Sigfox, FSK/OOK | LoRaWAN, Sigfox, FSK/OOK | LoRaWAN, Sigfox, FSK/OOK | LoRaWAN, FSK/OOK | LoRaWAN, Sigfox, FSK/OOK | None (MCU only) |
Key Differentiators
- Single-board integration with on-board debugger (vs P-NUCLEO-LRWAN2)
- 157 dB link budget in a certified module (vs NUCLEO-L073RZ)
- Multi-protocol LoRaWAN, Sigfox, and FSK/OOK support (vs P-NUCLEO-LRWAN1)
Design Notes
Always connect the supplied 900 MHz 50-ohm stub antenna to SMA connector CN10 before enabling RF transmission. Operating the SX1276 transceiver without a matched load can reflect power back into the PA and degrade or damage the radio. If an external antenna is used, verify 50-ohm impedance and keep the RF trace short. This guidance follows ST user manual UM2115 for the B-L072Z-LRWAN1.
Estimated: the STM32L072CZ in the CMWX1ZZABZ-091 module draws roughly 1-2 mA in run mode and a few microamps in stop mode, while the SX1276 transmit current at +14 dBm is on the order of 30-40 mA. For battery-powered prototypes, measure current on the board's supply jumper and budget for the Discovery board's ST-LINK/V2-1 and regulator overhead, which are not present in a production CMWX1ZZABZ-091 design. Validate final battery life on the production PCB.
When migrating from the B-L072Z-LRWAN1 to a custom CMWX1ZZABZ-091 design, copy the module's reference layout from the Murata datasheet: keep the RF output trace 50-ohm controlled, place the antenna matching network close to the module, and keep digital traces away from the RF path. The Discovery board's SMA connector and stub antenna are for evaluation only; production designs should use a tuned PCB antenna or a certified external antenna to preserve the 157 dB link budget.
Compliance Information
Compliance data for the B-L072Z-LRWAN1 was not present in the verified web data; values are marked unknown rather than assumed. Consult the STMicroelectronics product page and data brief for RoHS and REACH declarations.