Ra-01H - LoRa 803-930MHz SX1276 SPI Module | Ai-Thinker
N.º de pieza: Ra-01H ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.61 | $4,61 |
| 10 | $4.35 | $43,50 |
| 100 | $3.95 | $395,00 |
| 500 | $3.6 | $1.800,00 |
| 1.000 | $3.3 | $3.300,00 |
Ra-01H Descripción general
A LoRa (Long Range) module is a wireless transceiver IC that uses Chirp Spread Spectrum (CSS) modulation to achieve long-range, low-power communication in sub-gigahertz license-free ISM bands. LoRa belongs to the wider family of low-power wide-area network (LPWAN) technologies, sitting alongside NB-IoT and Sigfox as a complementary physical-layer solution for battery-powered IoT endpoints. The Ai-Thinker Ra-01H is a complete pre-certified RF module that integrates the SX1276 die with impedance-matching network and shielding, eliminating the need for RF layout expertise during prototyping.
Key features include LoRa frequency hopping spread spectrum support, Channel Activity Detection (CAD) for Listen-Before-Talk (LBT) operation, and ultra-low receive current for battery-powered sensor nodes. The receiver sensitivity of -140 dBm combined with the +20 dBm transmit power provides a link budget of 160 dB, sufficient for line-of-sight ranges of several kilometers. The SX1276 also embeds an FSK/OOK transceiver mode for compatibility with legacy sub-GHz protocols.
The Ra-01H typically runs as the wireless physical layer in star or point-to-point LoRa networks, paired with a microcontroller host over SPI. The SX1276 architecture provides up to +20 dBm on the 868/915 MHz bands with efficient PA ramp control, plus leading-edge features like 256-byte FIFO and packet engine that offload timing-critical tasks from the host MCU. The wide 803-930 MHz coverage allows deployment across both the European 868 MHz and North American 915 MHz ISM allocations without hardware changes.
Typical applications include long-range IoT sensor telemetry (smart metering, agriculture, environmental monitoring), industrial remote control, asset tracking, smart home wireless bridges, and LPWAN prototyping with LoRaWAN gateways. The compact SMD-16P form factor drops directly onto host PCBs, while the through-hole variant Ra-01H-IPEX requires manual antenna integration for development boards.
When designing with this module, ensure the host PCB provides a solid ground plane beneath the module's exposed paddle and that the antenna trace is 50 ohm controlled-impedance. Place supply decoupling (10 uF + 100 nF) within 5 mm of the VDD pin to suppress load-dump transients during PA ramp-up.
Alternativas directas para Ra-01H — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con Ra-01H (mismo factor de forma y huella) — difiere en RF Chip, Receive Sensitivity, Supply Voltage, Package, Maximum TX Power.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
Ra-01
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
Ra-01S
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
Ra-01SC
✅ Sustitución directa✓ En stock
$1.92 / unidad
Ver hoja de datos →Ra-01SH
✅ Sustitución directa✓ En stock
$1.72 / unidad
Ver hoja de datos →Ra-01H Especificaciones (publicadas por el fabricante)
| RF Chip | Semtech SX1276 |
| Operating Frequency Band | 803 MHz to 930 MHz |
| Maximum TX Power | +20 dBm (100 mW) |
| Modulation | LoRa, FSK, GFSK, MSK, GMSK, OOK |
| Receive Sensitivity | -140 dBm |
| Tensión de alimentación | 3.3 V |
| Receive Current (max) | 105 mA |
| Average Operating Current | 12.15 mA |
| Host Interface | SPI |
| Encapsulado | SMD-16P |
| Tipo de montaje | Surface Mount |
| Antenna | Not Included (external required) |
| Características | LoRa frequency hopping, Channel Activity Detection (CAD), forward error correction |
| Estado RoHS | Compliant |
Configuración de pines de Ra-01H
| Pin 1 | GND — Ground reference |
| Pin 2 | VCC — +3.3V supply input |
| Pin 3 | DIO1 — Multi-purpose digital I/O 1 |
| Pin 4 | DIO2 — Multi-purpose digital I/O 2 |
| Pin 5 | DIO3 — Multi-purpose digital I/O 3 |
| Pin 6 | DIO4 — Multi-purpose digital I/O 4 |
| Pin 7 | DIO5 — Multi-purpose digital I/O 5 |
| Pin 8 | RESET — Active-low reset input |
| Pin 9 | NSS — SPI chip select (active low) |
| Pin 10 | SCK — SPI serial clock |
| Pin 11 | MOSI — SPI master-out / slave-in data |
| Pin 12 | MISO — SPI master-in / slave-out data |
| Pin 13 | ANT — Antenna RF port (50 ohm) |
| Pin 14 | GND — Ground reference |
| Pin 15 | GND — Ground reference |
| Pin 16 | GND — Ground reference |
Características de potencia y térmicas
| Entrada de potencia | 3.3 V |
Parámetros de entrada de potencia y térmicos para Ra-01H según lo publicado por el fabricante.
Aplicaciones típicas
Ra-01H es adecuado para 6 aplicacións: Smart Metering & Utility AMR, Agricultural IoT & Environmental Sensing, Industrial Remote Control & SCADA Links, Smart Home & Building Automation Bridges, Asset Tracking & Fleet Management, LoRaWAN Endpoint Prototyping.
Smart Metering & Utility AMR
The Ai-Thinker Ra-01H fits smart metering deployments because its -140 dBm LoRa sensitivity and +20 dBm output give a 160 dB link budget, enough to read meters from basements to rooftops without intermediate repeaters. The SX1276 Chirp Spread Spectrum modulation is highly robust against narrowband interference from power-line communication and ISM-band noise common in utility environments. In typical water/gas meter designs, the Ra-01H is paired with a low-power MCU running a LoRaWAN Class A or B stack, transmitting meter readings every 15-60 minutes from a single 3.6 V lithium battery that can last 10+ years thanks to the module's 12.15 mA average and sub-microamp sleep current. Compared to cellular M2M modules, the Ra-01H reduces per-meter connectivity cost by an order of magnitude.
Recomendado
Agricultural IoT & Environmental Sensing
The Ra-01H suits agriculture sensor networks across large farms because LoRa's multi-kilometer range eliminates the need for dense gateway coverage. Soil moisture, temperature, and humidity nodes use the module's 12.15 mA TX current to send a small packet every few minutes from battery-powered sensors scattered across fields. The SX1276's Channel Activity Detection (CAD) enables Listen-Before-Talk operation for spectrum etiquette across unlicensed 868/915 MHz bands. SPI-based host integration means even entry-level MCUs like the ESP32 can manage the radio via the standard LoRa library stack. The wide 803-930 MHz tuning range covers both EU 868 MHz and US/AU 915 MHz regions without a hardware change.
Recomendado
Industrial Remote Control & SCADA Links
Industrial control rooms can use the Ra-01H for wireless telemetry from pumps, valves, and motor controllers where running cables is impractical. The SMD-16P surface-mount package mounts directly onto industrial controller PCBs, and the LoRa modulation provides strong immunity to motor-drive EMI and switching-converter noise that disrupts narrowband radios. With +20 dBm output and a 160 dB link budget, one Ra-01H-equipped gateway can collect telemetry from dozens of field assets across a plant site. The host MCU over SPI can switch on the fly between LoRa, FSK, and OOK modes to interwork with legacy proprietary radio installations already on site. Robust forward error correction ensures critical SCADA packets survive harsh RF environments.
Recomendado
Smart Home & Building Automation Bridges
The Ra-01H can act as a long-range wireless bridge for smart home devices that exceed the range of Wi-Fi or Bluetooth, such as outdoor garden lights, garage-door sensors, or pool controllers. Pairing with an ESP32 host running ESPHome lets a hobbyist device integrate with Home Assistant while still enjoying LoRa's kilometer-class range. The SMD-16P module accepts a 3.3 V supply directly from USB-powered microcontrollers, and the SPI bus uses standard 4-wire signaling plus chip-select. Channel Activity Detection prevents collisions when multiple home devices share an unlicensed 868/915 MHz channel. Operating modes range from continuous LoRa to sleep modes drawing near-zero current for battery-powered doorbell and contact-sensor devices.
Recomendado
Asset Tracking & Fleet Management
Fleet operators can deploy Ra-01H-equipped tracking devices on trucks, trailers, and shipping containers that move beyond cellular coverage. Combined with a GPS module like the u-blox NEO-M9N, the Ra-01H transmits position updates over LoRaWAN to gateways positioned along the route. The SX1276's -140 dBm sensitivity and LoRa processing gain detect signals at ranges over 5 km in open terrain, providing GPS fix relay in remote areas where cellular coverage is unavailable. The 12.15 mA average current draw during TX keeps battery consumption modest for solar-powered trackers, and the wide 803-930 MHz band supports international logistics routes through multiple regions with the same hardware.
Recomendado
LoRaWAN Endpoint Prototyping
Hobbyists and engineers prototyping LoRaWAN endpoints commonly choose the Ra-01H because it integrates the SX1276 with a matched antenna network, enabling them to skip the difficult RF layout work. The module pairs with LMIC or LoRaMac-node stacks running on Arduino, ESP32, or STM32 hosts to communicate with The Things Network. The SMD-16P form factor drops into Adafruit Feather-compatible boards or custom breakout PCBs, and Ai-Thinker's module-level FCC ID 2ATPO-RA-01H provides documentation for end-product compliance. Experimenters can switch between LoRaWAN classes A, B, and C by changing host firmware, while keeping the radio hardware unchanged.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para Ra-01H — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | Ra-01 | Ra-01S | Ra-01SC | Ra-01SH |
|---|---|---|---|---|---|
| Package | SMD-16P | SMD-16P (same) | SMD-16P (same) | SMD-16P (same) | SMD-16P (same) |
| Brand | Ai-Thinker | Ai-Thinker | Ai-Thinker | Ai-Thinker | Ai-Thinker |
| RF Chip | Semtech SX1276 | Semtech SX1276 | Semtech SX1276 | Semtech SX1276 | Semtech SX1276 |
| Operating Frequency | 803-930 MHz | 410-525 MHz | 410-525 MHz | 410-525 MHz | 803-930 MHz |
| TX Power | +20 dBm | +20 dBm | +20 dBm | +20 dBm | +20 dBm |
| RX Sensitivity | -140 dBm | -140 dBm | -140 dBm | -140 dBm | -140 dBm |
| Modulation | LoRa/FSK/GFSK/MSK/GMSK/OOK | LoRa/FSK/GFSK/MSK/GMSK/OOK | LoRa/FSK/GFSK/MSK/GMSK/OOK | LoRa/FSK/GFSK/MSK/GMSK/OOK | LoRa/FSK/GFSK/MSK/GMSK/OOK |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Interface | SPI | SPI | SPI | SPI | SPI |
Diferenciadores clave
- Sub-GHz 868/915 MHz band in a single SKU (frente a Ra-01)
- Surface-mount SMD-16P form factor (frente a RFM95W)
- Higher link budget than competing sub-GHz modules (frente a Generic FSK-only modules)
Notas de diseño
Estimated: Place a solid copper ground pour directly under the Ra-01H SMD-16P footprint and stitch with vias on a 5 mm grid to provide the RF return path the chip's integrated antenna network assumes. Keep the 50 ohm microstrip antenna trace as short as possible and length-matched; deviations >2 mm significantly degrade range. Avoid routing signal traces under the module paddle.
The Ra-01H draws up to 105 mA receive-current peaks and +20 dBm transmit bursts; use a low-ESR regulator with at least a 10 uF bulk + 100 nF decoupling capacitor within 5 mm of the VCC pin. Insufficient decoupling causes PA supply droop and CRC errors during bursts. A ferrite bead between the regulator and module further suppresses digital switching noise from the host MCU.
Configure the SX1276 frequency registers according to the actual matching network for your band; using the 868 MHz defaults while the matching network is for 915 MHz shifts the harmonics and fails regulatory tests. Always calibrate the PA ramp time per the official Ai-Thinker reference design and validate output power with a spectrum analyzer before production.
Estimated: Continuous TX at +20 dBm on a small host PCB can raise the module's case temperature by 15-20 C above ambient in still air. Derate TX duty cycle or improve PCB copper thermal relief around the ground pads if the host enclosure is sealed with no airflow.
Información de cumplimiento
RoHS status confirmed compliant per LCSC and Ai-Thinker product listing. Module certified under FCC ID 2ATPO-RA-01H for FCC Part 15.247 use. Other REACH/halogen/conflict-mineral data is not provided in the source data and has been marked unknown.
