RF-BM-ND02 - BLE 4.2 nRF51822 Module | RF-Star | IoT
部品番号: RF-BM-ND02 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.9 | $2.90 |
| 10 | $2.6 | $26.00 |
| 100 | $2.3 | $230.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.9 | $1,900.00 |
RF-BM-ND02 概要
A Bluetooth Low Energy module is a complete short-range wireless subsystem combining a 2.4 GHz radio transceiver, a microcontroller, clock sources, and an antenna into a single pre-certified unit. Within the wireless connectivity hierarchy, BLE modules sit under RF modules, which belong to the broader family of short-range wireless communication devices. Using a module instead of a bare SoC removes RF layout, antenna tuning, and regulatory certification work from the OEM, drastically shortening time to market for connected products.
Key features of the RF-BM-ND02 include support for Bluetooth v4.2 Low Energy as well as 2.4 GHz proprietary protocols, low power consumption suited to coin-cell battery operation, a compact footprint, robust connection distance from the inverted-F PCB antenna, and rigid reliability per the manufacturer hardware datasheet. The underlying nRF51822QFAA provides SPI master/slave, I2C master, and UART programming interfaces plus AES hardware encryption, enabling flexible sensor and peripheral designs.
The nRF51822 architecture pairs the ARM Cortex-M0 core with a 2.4 GHz transceiver supporting GFSK modulation, programmable output power, and Nordic's SoftDevice BLE stack architecture, which separates protocol firmware from application code. The integrated LC filter and matched antenna network ensure consistent RF performance across production units without external RF components.
Typical applications include battery-powered IoT sensors, smart home devices, beacons, medical wearables, and industrial wireless monitoring nodes where a pre-certified BLE link and secondary development capability reduce certification cost and design risk.
When designing with this module, keep a clear keep-out area around the PCB antenna, feed it with a clean 2.4 GHz-rated power supply, and verify antenna detuning effects from nearby metal or ground planes. Because the module is BQB and FCC approved, careful layout preserves the certification grant.
This page synthesizes verified datasheet parameters, drop-in alternatives, application guidance, and pricing context not found in the manufacturer datasheet alone.
ドロップイン代替品: RF-BM-ND02 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
RF-BM-ND02C
✅ ドロップイン📋 参考代替品（カタログ未掲載）
RF-BM-ND02 仕様（メーカー公開）
| Core Chip | Nordic nRF51822QFAA |
| Processor | ARM Cortex-M0 32-bit |
| Flash Memory | 256 KB |
| RAM | 16 KB |
| Bluetooth Version | Bluetooth 4.2 Low Energy |
| Proprietary Protocol Support | 2.4 GHz proprietary (GFSK) |
| Operating Frequency | 2.4 GHz ISM band |
| Crystal Frequency | 16.0 MHz (integrated) |
| Antenna Type | Meander line inverted-F PCB antenna |
| RF Matching | Integrated LC filter and antenna matching network |
| Encryption | AES hardware encryption |
| Interfaces | SPI master/slave, I2C master, UART programming |
| Power Consumption | Low power (per datasheet) |
| Certifications | BQB approved, FCC approved |
| Secondary Development | Supported |
RF-BM-ND02 インターフェースとコネクタ
RF-BM-ND02 は、メーカーが公開している以下のインターフェースとコネクタを備えています: Bluetooth。拡張ヘッダーのピン配置、コネクタのピン番号、電気的制限はメーカーのドキュメントで定義されています。
| Bluetooth | Bluetooth 4.2 Low Energy |
詳細は メーカー資料 をご参照ください（拡張ヘッダーのピン配置とコネクタのピン番号の詳細）。
電力・熱特性
| 消費電力 | Low power (per datasheet) |
メーカーが公開している RF-BM-ND02 の電力入力および熱パラメータ。
主な用途
RF-BM-ND02 の用途: 6 件s: Battery-Powered IoT Sensor Nodes, Smart Home Devices, Bluetooth Beacons, Medical Wearables and Health Monitors, Industrial Wireless Monitoring, Consumer Electronics Remote Controls and Accessories.
Battery-Powered IoT Sensor Nodes
The RF-BM-ND02 is explicitly developed for high-reliability, battery-powered IoT products. Its nRF51822QFAA SoC with ARM Cortex-M0 core offers low power consumption suitable for coin-cell powered sensor nodes, while the integrated inverted-F PCB antenna removes external antenna BOM cost. The module supports Bluetooth 4.2 Low Energy for smartphone connectivity and 2.4 GHz proprietary protocols for custom star networks. In a typical temperature or humidity sensor, the module sleeps in System OFF mode, wakes on an RTC or sensor interrupt, takes a measurement over I2C, and transmits a short BLE advertisement, maximizing battery life. Placement of the module near the enclosure edge with a clear keep-out preserves RF range.
おすすめ
Smart Home Devices
Smart home products such as door locks, bulbs, and scene controllers benefit from the RF-BM-ND02's BQB and FCC pre-approval, which shortens end-product certification. The 256 KB flash and 16 KB RAM of the nRF51822QFAA provide room for a full BLE GATT stack plus application logic, and AES hardware encryption secures pairing and data without CPU overhead. The module's UART and SPI interfaces connect to user interfaces such as touch keys or LED drivers, while the inverted-F PCB antenna performs well inside plastic enclosures. Because the module supports secondary development, OEMs can implement proprietary control profiles alongside standard BLE services for app interoperability.
おすすめ
Bluetooth Beacons
Beacon deployments (iBeacon/Eddystone-style) need long battery life, consistent RF output, and low unit cost, all matched by the RF-BM-ND02. The module's integrated 16.0 MHz crystal and LC-matched inverted-F antenna give repeatable transmit performance across production units, which is essential when hundreds of beacons are deployed in a venue. The nRF51822's low-power modes allow multi-month operation from a CR2032 cell at 1-second advertising intervals. Firmware customization via UART/SWD lets operators set UUIDs, TX power, and advertising intervals in the field. For deployments requiring BLE 5 long-range or direction finding, migrate to the RF-BM-ND05 nRF52840 family instead.
おすすめ
Medical Wearables and Health Monitors
Wearable health devices demand a compact, low-power, and reliable BLE link to smartphones, exactly what the RF-BM-ND02 provides. The nRF51822QFAA's Cortex-M0 handles sensor data pipelines from pulse-oximeter or ECG front ends over SPI/I2C while the BLE 4.2 stack manages GATT services and AES-encrypted connections required for health data privacy. The meander inverted-F PCB antenna performs acceptably when worn against the body if the module is placed with proper ground clearance. Low power consumption extends battery life in continuous-monitoring modes. BQB approval simplifies regulatory paperwork for medical device manufacturers already facing IEC 60601 compliance burdens.
おすすめ
Industrial Wireless Monitoring
In industrial environments, the RF-BM-ND02 serves as a robust 2.4 GHz link for condition-monitoring sensors on motors, pumps, and HVAC equipment. The module's rigid reliability and robust connection distance, stated by the manufacturer, suit metal-cluttered facilities when the antenna face is oriented toward the receiver. Proprietary 2.4 GHz protocol support enables deterministic point-to-multipoint networks without BLE overhead where latency matters. The 16 KB RAM and 256 KB flash accommodate data logging and retransmission buffers. Designers should mount the module with the PCB antenna away from grounded metal panels and verify link budget during site surveys, as industrial attenuation can exceed 20 dB.
おすすめ
Consumer Electronics Remote Controls and Accessories
BLE remote controls, tags, and phone accessories use the RF-BM-ND02 for standard HID-over-GATT and custom profiles. The module's secondary development support lets accessory makers implement button matrices, vibration feedback, and OTA configuration on the nRF51822's Cortex-M0 core. Low power consumption extends coin-cell or small LiPo life, while the compact footprint fits slim handheld industrial designs. The integrated antenna and matching network mean no RF expertise is needed at the OEM, and the BQB/FCC grants carry through modular certification for fast time to market across regions. UART programming enables in-line firmware flashing on the production line.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: RF-BM-ND02 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | RF-BM-ND02C |
|---|---|---|
| Package | Castellated SMD module with PCB antenna | Same castellated SMD module footprint |
| Brand | RF-Star | RF-Star |
| Core SoC | Nordic nRF51822QFAA | Nordic nRF51802QFAA |
| Processor | ARM Cortex-M0 32-bit | ARM Cortex-M0 32-bit |
| Bluetooth Version | Bluetooth 4.2 Low Energy | Bluetooth 4.2 Low Energy |
| Antenna | Meander line inverted-F PCB antenna | Meander line inverted-F PCB antenna |
| Crystal | 16.0 MHz integrated | 16.0 MHz integrated |
| Certifications | BQB, FCC approved | BQB, FCC approved |
主な差別化要因
- Larger flash and RAM on standard nRF51822QFAA （vs RF-BM-ND02C)
- Fully integrated RF front end with pre-certification （vs Nordic nRF51822QFAA bare SoC)
- Cost-optimized upgrade path within the same family （vs RF-BM-ND05)
設計ノート
Keep a clearance keep-out of at least several millimeters around the meander line inverted-F PCB antenna free of copper, ground plane, and components. Place the module so the antenna section overhangs the host PCB edge or faces plastic enclosure material only. Metal enclosures or nearby ground pour detune the antenna, degrading range and potentially invalidating the FCC modular approval conditions.
Supply the module through a low-noise LDO or clean DC rail with local decoupling (e.g., a 10 uF bulk capacitor plus 100 nF ceramic close to the VDD pad). BLE transmit bursts draw short current peaks; inadequate decoupling causes supply droop, brownout resets, and degraded modulation accuracy. Estimated: at typical nRF51822 peak TX currents in the 10 mA class, even 0.3 ohm of trace impedance causes visible droop, so keep power traces short and wide.
Preserve access to the SWD and UART programming pads in your end-product layout; burying them under connectors or potting complicates firmware updates and production programming. When substituting the RF-BM-ND02C, verify that your application's flash footprint fits the reduced memory of the nRF51802 before switching, since firmware compiled with 256 KB headroom may not link on the smaller device.
コンプライアンス情報
BQB (Bluetooth SIG) approved and FCC approved per RF-Star official product listings. RoHS/REACH status not stated in the verified data.
