RAK3172-9-SM-NI - LoRaWAN 915MHz Module, STM32WLE5, 15.5x15mm | RAKwireless
Référence : RAK3172-9-SM-NI ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.47 | $7,47 |
| 10 | $6.95 | $69,50 |
| 100 | $6.3 | $630,00 |
| 500 | $5.8 | $2 900,00 |
| 1 000 | $5.4 | $5 400,00 |
RAK3172-9-SM-NI Présentation
A LoRaWAN module is a pre-certified radio transceiver that combines a long-range sub-GHz physical layer (typically based on Semtech SX126x or integrated equivalents inside the host SoC) with LoRaWAN MAC protocol firmware. These modules sit one level above a raw RF transceiver in the connectivity hierarchy and below the application MCU; they remove the burden of RF matching, antenna design, and regional regulatory certification, allowing engineers to add multi-kilometer wireless links to battery-powered IoT nodes. The RAK3172 integrates the LoRa modem directly inside the STM32WLE5CC application MCU, eliminating the external transceiver IC and shrinking BOM cost and PCB footprint.
Key feature highlights include an LoRaWAN 1.0.3 Class A/B/C stack, a stated link range of up to 15 km in line-of-sight conditions, three low-power operating modes (transmit, receive, and sleep), and access to GPIO, ADC, and timers of the underlying Cortex-M4 host. The host runs an integrated LoRaWAN stack via AT commands or STM32Cube firmware, allowing rapid prototyping without external MCU glue logic. UART serves as the primary host interface for AT-command control, while SPI and I2C are exposed for direct MCU integration. The wide 2 V to 3.6 V supply range is well suited to single-cell Li-SoCl2, Li-ion, and 2x AA battery chemistries common in field-deployed sensors.
The module is rated for an industrial operating temperature range of -40 C to +85 C. Its small 15.5x15 mm SMD footprint, combined with the absence of an I-PEX connector, makes it suitable for designs where the antenna is integrated on the host PCB (chip antenna or PCB trace) or routed via a pigtail to a chassis-mount SMA. Designers can leverage the Zephyr OS board support, RAK's AT-command firmware, or STM32Cube-based SDKs.
Typical applications include battery-powered LoRaWAN end nodes, agricultural soil/moisture sensors, smart-city metering, asset tracking, and wireless alarm panels. Designers should evaluate antenna gain and ground clearance around the RF pad when migrating from the I-PEX-equipped RAK3172-9-SM-I to this no-I-PEX variant.
A key design consideration is antenna selection: because the I-PEX connector is omitted, RF performance depends entirely on the external antenna implementation. A poorly matched antenna can reduce range by 10 dB or more.
This page synthesizes distributor pricing, drop-in module alternatives, and field design notes that go beyond the manufacturer datasheet alone.
Alternatives de remplacement direct pour RAK3172-9-SM-NI — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec RAK3172-9-SM-NI (même facteur de forme et même empreinte) — différant par Operating Temperature, Modulation, Supply Voltage, Host Interfaces, Flash Memory.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
RAK3172-9-SM-I
✅ Remplacement direct✓ En stock
$5.55 / unité
Voir la fiche technique →RAK3172-T-8-SM-I
✅ Remplacement direct✓ En stock
$6.25 / unité
Voir la fiche technique →RAK3172-SiP
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
Wio-E5-LE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CMWX1ZZABZ-078
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
RAK3172-9-SM-NI Spécifications (publiées par le fabricant)
| Manufacturer | RAKwireless Technology Limited |
| Module Series | WisDuo RAK3172 |
| Host SoC | STMicroelectronics STM32WLE5CCU6 (Cortex-M4 + LoRa transceiver) |
| Supported Frequencies | 915 MHz, 920 MHz, 923 MHz (regional LoRaWAN bands) |
| Tension d'alimentation | 2 V to 3.6 V |
| Supply Current (TX) | 87 mA |
| Supply Current (RX) | 5.22 mA |
| Range (line-of-sight) | Up to 15 km |
| Host Interfaces | UART, SPI, I2C |
| LoRaWAN Class | Class A / B / C (LoRaWAN 1.0.3) |
| Antenna Connector | Without I-PEX (RF routed via PCB pad) |
| Package / Mounting | SMD, 15.5 x 15 mm |
| Température de fonctionnement | -40 C to +85 C |
| Compliance | RoHS Compliant |
| Module Family Variants | RAK3172-9-SM-I (with I-PEX), RAK3172-9-SM-NI (no I-PEX) |
Interfaces et connecteurs du RAK3172-9-SM-NI
Le RAK3172-9-SM-NI expose les interfaces et connecteurs suivants tels que publiés par le fabricant : Alimentation. Le brochage de l'embase d'extension, la numérotation des broches des connecteurs et les limites électriques sont définis dans la documentation du fabricant.
| Alimentation | 2 V to 3.6 V |
Consultez la documentation du fabricant pour le brochage complet du connecteur d'extension et la numérotation des broches du connecteur.
Caractéristiques de puissance et thermiques
| Alimentation | 2 V to 3.6 V |
| Température de fonctionnement | -40 C to +85 C |
Paramètres d'alimentation et thermiques pour RAK3172-9-SM-NI tels que publiés par le fabricant.
Applications typiques
RAK3172-9-SM-NI convient pour 7 applications: Battery-Powered Environmental Monitoring, Smart City Metering Infrastructure, Asset Tracking and Fleet Telematics, Industrial Wireless Alarm Panels, Agricultural Irrigation Control, Smart Home and Building Automation, Wireless Sensor Networks for Research and Education.
Battery-Powered Environmental Monitoring
The RAK3172-9-SM-NI is purpose-built for outdoor battery-powered environmental sensors in agriculture and remote monitoring. Its 5.22 mA receive current and sub-microampere sleep current, combined with the 2 V to 3.6 V supply range, let it run for multiple years on 2x AA Li-SoCl2 cells when uplink duty cycle stays below 1%. The integrated STM32WLE5CCU6 host means designers can read sensors directly over I2C or ADC without an external MCU, simplifying BOM and lowering quiescent draw. The 'NI' no-I-PEX variant supports a PCB trace or chip antenna, ideal for compact weatherproof sensor enclosures. The 15 km line-of-sight range covers typical farm, vineyard, or forestry deployment distances. The LoRaWAN Class A/B/C stack ensures compatibility with TTN, ChirpStack, and Helium networks worldwide.
Recommandé
Smart City Metering Infrastructure
The RAK3172-9-SM-NI serves as the wireless uplink for smart water, gas, and electricity meters in dense urban LoRaWAN networks. The 920-923 MHz regional support covers Asia-Pacific smart-city rollouts, while its 87 mA TX current peaks are sustained by step-down converters fed from the meter's primary power. Built-in AES-128 LoRaWAN security and per-frame counter (DevNonce) handling protect billing data from replay attacks. The LoRaWAN 1.0.3 Class C support enables always-on downlink for utility command-and-control. The 15.5x15 mm SMD footprint fits inside standard meter enclosures alongside the metrology IC. Long-term stability over -40 C to +85 C matches outdoor meter deployment requirements. Cross-band variants (-8, -9) let OEMs reuse the same firmware for global rollouts.
Recommandé
Asset Tracking and Fleet Telematics
The RAK3172-9-SM-NI powers battery-operated GPS asset trackers and trailer/container telematics. Its low sleep current extends tracker operational life beyond the typical 2-3 year fleet management requirement. The integrated UART host interface accepts NMEA-0183 GPS module data directly, while LoRaWAN uplinks position packets over private or public networks (Helium, TTN). Class A/B/C LoRaWAN enables scheduled downlink configuration over-the-air. The -40 C to +85 C operating range covers unheated trailers, ocean containers, and outdoor yard storage. Without an I-PEX connector the module fits inside IP67 enclosures with internal PCB antennas. The 15 km range handles intermodal shipping yard coverage reliably.
Recommandé
Industrial Wireless Alarm Panels
The RAK3172-9-SM-NI integrates into industrial alarm panels where long-range wireless connectivity is required without Wi-Fi infrastructure. Its 2 V minimum supply supports battery-backed operation during mains outages. LoRaWAN Class C enables always-listening for central-station downlinks to acknowledge alarms or trigger sirens. The robust -40 C to +85 C range covers factory floors, cold storage, and outdoor installations. AES-128 LoRaWAN encryption satisfies industrial security requirements. The 87 mA TX peaks are well within alarm panel 12 V battery budgets after buck regulation. RAK's AT-command firmware allows rapid integration with legacy alarm control boards over UART.
Recommandé
Agricultural Irrigation Control
The RAK3172-9-SM-NI enables LoRaWAN-controlled irrigation valves and soil moisture sensor nodes across large farms. Its multi-band 920-923 MHz coverage supports APAC LoRaWAN deployments. The integrated Cortex-M4 host reads soil moisture sensors over ADC or I2C, runs irrigation scheduling logic locally, and uplinks telemetry every 15 minutes to conserve battery. Class B synchronized downlink enables time-critical valve-open commands. The 5.22 mA RX current and ultra-low sleep current enable multi-year battery operation in remote fields. The 'NI' variant fits inside IP68 valve actuator enclosures with internal antennas.
Recommandé
Smart Home and Building Automation
The RAK3172-9-SM-NI provides long-range wireless connectivity for smart home devices that need to reach outdoor gateways or detached structures (sheds, gates, garages). Its LoRaWAN stack integrates with Home Assistant, openHAB, and other home automation hubs via MQTT bridges. Battery-powered door/window sensors run for years on coin cells thanks to the module's sub-microampere sleep current. The 15 km range covers edge-of-property coverage from a single indoor gateway. The wide operating temperature range supports unheated garages and outdoor smart locks. Class C support enables instant push notifications when paired with always-listening gateways.
Recommandé
Wireless Sensor Networks for Research and Education
The RAK3172-9-SM-NI serves as an accessible development platform for university research and STEM education. The Zephyr OS board support and RAK's AT-command firmware lower the barrier to entry for students exploring LPWAN technology. The 15.5x15 mm SMD form factor is breadboard-friendly via breakout boards. Multi-region band support lets a single SKU support global research collaborations. The exposed UART, SPI, and I2C interfaces facilitate integration with educational sensor kits (Arduino, Raspberry Pi Pico, ESP32 gateways). The comprehensive datasheet and active RAK community forum accelerate student project timelines.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour RAK3172-9-SM-NI — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | RAK3172-9-SM-I | RAK3172-T-8-SM-I | RAK3172-SiP | Wio-E5-LE | CMWX1ZZABZ-078 |
|---|---|---|---|---|---|---|
| Brand | RAKwireless | RAKwireless | RAKwireless | RAKwireless | Seeed Studio | Murata |
| Package / Footprint | SMD 15.5 x 15 mm (no I-PEX) | SMD 15.5 x 15 mm (with I-PEX) | SMD 15.5 x 15 mm (with I-PEX) | SMD 15.5 x 15 mm | SMD module, similar footprint | SMD 12 x 12 mm |
| Supported Bands | 915 / 920 / 923 MHz | 915 / 920 / 923 MHz | Multi-region 8-band set | 915 / 920 / 923 MHz | EU868 / US915 / AS923 | EU868 / US915 / AS923 / AU915 |
| Supply Voltage | 2 V to 3.6 V | 2 V to 3.6 V | 2 V to 3.6 V | 2 V to 3.6 V | 3.0 V to 3.6 V | 2.2 V to 3.6 V |
| TX Current (peak) | 87 mA | 87 mA | 87 mA | 87 mA | 120 mA | 100 mA |
| RX Current | 5.22 mA | 5.22 mA | 5.22 mA | 5.22 mA | 8 mA | 10 mA |
| Host Interfaces | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Unit Price (qty 1, as of Oct 2026) | $7.47 | $7.50 (approx) | $7.80 (approx) | $6.90 (approx) | $9.95 (approx) | $12.00 (approx) |
Principaux différenciateurs
- Integrated SoC eliminates external transceiver IC (vs CMWX1ZZABZ-078)
- No-I-PEX variant enables compact PCB antenna integration (vs RAK3172-9-SM-I)
- Open-source Zephyr OS support (vs Wio-E5-LE)
Notes de conception
When laying out the host PCB for the RAK3172-9-SM-NI, maintain a copper keep-out zone of at least 5 mm on all sides of the RF pad. Route the antenna trace in a 50-ohm controlled-impedance microstrip (typically 0.8-1.0 mm wide on 0.8 mm FR4). Per the RAKwireless datasheet, mismatched antenna traces can reduce effective range by 10 dB or more, so always validate with a VNA before finalizing layout. If you intend to swap to the RAK3172-9-SM-I variant later, reserve footprint space for an optional I-PEX connector footprint.
The 87 mA TX peak current of the RAK3172-9-SM-NI requires a low-ESR decoupling network: a 10 uF X5R ceramic plus 100 nF X7R bypass placed within 2 mm of the VDD pin. Battery-powered designs should size the cell to sustain 100 mA pulses without dropping below 2.0 V. For Li-SoCl2 primary cells, derate capacity by 30-40% for pulsed loads; Li-ion with buck regulator is preferable for designs requiring high TX duty cycles.
Common pitfalls when integrating the RAK3172-9-SM-NI: (1) selecting the wrong regional band SKU for your LoRaWAN network, (2) forgetting that 'NI' means no I-PEX and routing the antenna to a non-existent connector, (3) underestimating sleep current when leaving UART lines floating (tie unused UART pins to known state to prevent leakage), and (4) failing to enable Class B/C explicitly in firmware - the module defaults to Class A. Refer to the RAKwireless AT command manual for the correct +CLASS command syntax.
Although the RAK3172-9-SM-NI has modest continuous power dissipation, the integrated STM32WLE5CCU6 can self-heat during prolonged +22 dBm TX bursts. In sealed IP67 enclosures with no airflow, internal temperature may rise 15-20 C above ambient during continuous TX. For battery-powered sensor applications with low duty cycle, this is negligible; for always-on Class C gateways, mount the module on a thermal via farm and provide ground-plane copper for heat spreading.
Informations de conformité
RoHS compliant per JLCPCB and PartGenie. REACH status not explicitly published by RAKwireless. Not AEC-Q100 qualified (RF module, not automotive-qualified). Lead-free confirmed via RoHS compliance.
