EMB-LR1276S/UL - 868/915MHz LoRaWAN Module | Embit
料号： EMB-LR1276S/UL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
EMB-LR1276S/UL 概述
A LoRaWAN module is an LPWAN (Low Power Wide Area Network) radio module that implements the LoRaWAN protocol stack on top of Semtech's LoRa chirp spread spectrum modulation, sitting within the broader hierarchy of wireless connectivity: RF module -> LPWAN transceiver -> wireless communication subsystem -> IoT device. LoRaWAN enables multi-kilometer range links at very low energy budgets, making it the dominant technology for battery-powered wide-area telemetry.
Key features of the EMB-LR1276S include an embedded LoRa/LoRaWAN protocol stack developed by Microchip, compliant with the latest LoRaWAN specifications including Class A and Class C device operation; high interference immunity inherent to LoRa spread-spectrum modulation; and extremely reduced power consumption of less than 1 uA in sleep mode, enabling years of battery life in fielded devices.
The module integrates a Microchip SAM R34-class host-friendly interface set and communicates through a wide range of serial interfaces: UART, I2C, SPI, Full-Speed USB 2.0, plus digital and analog I/O ports. The AT-command-accessible LoRaWAN stack lets system integrators add long-range connectivity without developing RF firmware, shortening certification and time-to-market cycles.
Typical applications include smart utility metering, agricultural sensor networks, smart-city infrastructure, asset tracking, and industrial telemetry - scenarios that demand kilometer-scale range, weak-signal robustness, and multi-year battery autonomy.
Design consideration: the +14 dBm EU / +18 dBm US output power split means firmware and antenna design must respect the regional regulatory limit of the destination market; the 11.5 x 11.5 mm footprint requires a well-defined 50-ohm antenna match for maximum link budget.
This page synthesizes verified distributor data, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.
直接替换替代料： EMB-LR1276S/UL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
EMB-LR1276S
✅ 直接替换📋 参考替代料（不在目录中）
EMB-LR1276S-UL
✅ 直接替换📋 参考替代料（不在目录中）
EMB-LR1276S/UL 规格参数（制造商发布）
| Frequency Band | 868 MHz / 915 MHz ISM |
| Modulation | Semtech LoRa (chirp spread spectrum) |
| Protocol Stack | Embedded LoRaWAN Class A and Class C (Microchip stack) |
| Maximum Output Power | +18 dBm (US) / +14 dBm (EU) |
| Receiver Sensitivity | -136 dBm |
| Sleep Mode Current | < 1 uA |
| Dimensions | 11.5 x 11.5 x 2 mm |
| Package Type | Castellated LGA module |
| Serial Interfaces | UART, I2C, SPI, Full-Speed USB 2.0 |
| GPIO | Digital and analog I/O ports |
| Supported Regions | EU868, US915 (UL variant) |
| Technology | Semtech LoRa long range modulation |
| 安装类型 | Surface Mount (SMD reflow) |
| Certification Readiness | LoRaWAN specification compliant |
| Typical Battery Autonomy | Multi-year (sleep current < 1 uA) |
EMB-LR1276S/UL 接口与连接器
EMB-LR1276S/UL 提供制造商发布的以下接口和连接器：GPIO。扩展排针引脚定义、连接器引脚编号和电气限值在制造商文档中定义。
| GPIO | Digital and analog I/O ports |
请参阅 制造商文档 以查看完整的扩展排针引脚和连接器引脚编号。
典型应用
EMB-LR1276S/UL 适用于 6 应用s: Smart Utility Metering, Agricultural Sensor Networks, Smart City Infrastructure, Industrial Telemetry and SCADA Retrofit, Asset Tracking, Smart Building and Security Sensors.
Smart Utility Metering
The EMB-LR1276S/UL fits water, gas, and electricity metering because its sub-1 uA sleep current and LoRaWAN Class A operation deliver multi-year battery autonomy inside a sealed meter enclosure, while -136 dBm sensitivity reaches basement and pit-level meters that defeat conventional radios. In a typical design the meter's host MCU drives the module over UART using the embedded Microchip LoRaWAN stack (AT-style commands), transmitting periodic consumption frames to a city-wide gateway network. Because the module is only 11.5 x 11.5 mm, it mounts directly on the meter main board without a dedicated RF sub-PCB. The +14 dBm EU limit keeps the design compliant with EN region regulations, and the castellated LGA pads allow standard reflow assembly alongside the rest of the meter electronics.
推荐
Agricultural Sensor Networks
Field agriculture demands kilometers of coverage across crops with no grid power, and the EMB-LR1276S/UL addresses both constraints: the Semtech LoRa chirp spread spectrum modulation provides high interference immunity and ultra-long range at -136 dBm sensitivity, and the <1 uA sleep current lets a solar-charged or primary-cell node report soil moisture and microclimate data for multiple seasons. The node MCU connects via UART or SPI, using the embedded Microchip LoRaWAN Class A stack so the radio sleeps between scheduled uplinks with ADR managing the data rate for optimal link budget. The 11.5 x 11.5 x 2 mm castellated module fits a compact weatherproof sensor head, and the /UL unified-band firmware lets one hardware design ship to both EU868 and US915 deployments without a second PCB spin.
推荐
Smart City Infrastructure
Parking sensors, waste-level monitors, and streetlight controllers all converge on LoRaWAN because a single gateway covers dense urban districts, and the EMB-LR1276S/UL provides the node-side radio with high interference immunity - critical in crowded 868/915 MHz ISM spectrum. The Microchip-developed embedded LoRaWAN stack supports Class A for battery devices and Class C for mains-powered actuators such as streetlight relays, so one module family serves both node types. Urban nodes benefit from the -136 dBm receive sensitivity, which compensates for deep-fade mounting locations (underground bins, metal poles). Integration is via UART, I2C, SPI, or Full-Speed USB 2.0, and the ultra-compact 11.5 x 11.5 mm footprint lets the radio coexist with power-metering and control circuitry on a single compact PCB.
推荐
Industrial Telemetry and SCADA Retrofit
Retrofitting legacy industrial equipment with wireless telemetry favors the EMB-LR1276S/UL because its multiple host interfaces - UART, I2C, SPI, and Full-Speed USB 2.0 - connect directly to existing PLC aux ports, flow computers, or gateway gateways without new firmware at the radio layer: the embedded Microchip LoRaWAN Class A/C stack is driven by simple serial commands. The <1 uA sleep current suits solar-powered remote monitoring points where panel sizing is limited, and -136 dBm sensitivity penetrates metal-dense plant environments to reach distant gateways. The castellated 11.5 x 11.5 x 2 mm module withstands standard reflow, allowing integration into DIN-rail telemetry adapters. Regulatory output limits (+14 dBm EU / +18 dBm US) are enforced by the stack for the configured region, simplifying compliance paperwork for retrofit installations.
推荐
Asset Tracking
Long-range asset tracking of trailers, containers, and returnable logistics carriers uses the EMB-LR1276S/UL for its ability to transmit position frames over multi-kilometer paths from a coin-cell-class budget: sleep current below 1 uA means the radio is effectively free between periodic reports, and Class A operation keeps receive windows short. Position data from a GPS or a BLE beacon is passed to the module over UART and uplinked via the embedded Microchip LoRaWAN stack; ADR and the -136 dBm sensitivity maintain connectivity where trackers drop onto warehouse floors or inside metal vehicles. The /UL unified-band variant lets one hardware SKU roam EU868 and US915 logistics corridors, reducing variants for global fleets. The 11.5 x 11.5 mm footprint fits inside a slim tracker enclosure with the battery and motion sensor.
推荐
Smart Building and Security Sensors
Door/window contacts, occupancy sensors, and leak detectors in commercial buildings benefit from LoRaWAN's penetration and the EMB-LR1276S/UL's years-long battery life: with <1 uA sleep and event-driven Class A uplinks, a door sensor on a single lithium cell outlives the building's lease cycles. The -136 dBm sensitivity maintains links through concrete stairwells and risers where 2.4 GHz systems fail, reducing gateway count per building. The embedded Microchip LoRaWAN stack handles OTAA joining and rekeying, while the host MCU manages the sensor front-end via the module's digital and analog I/O or over UART. Its ultra-compact 11.5 x 11.5 x 2 mm castellated package disappears inside a slim door-frame sensor housing, and +14 dBm EU output keeps the node within regional duty-cycle regulations automatically.
推荐
推荐产品汇总
工程参考数据： EMB-LR1276S/UL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EMB-LR1276S | EMB-LR1276S-UL |
|---|---|---|---|
| Package | 11.5 x 11.5 x 2 mm castellated LGA | 11.5 x 11.5 x 2 mm castellated LGA - same | 11.5 x 11.5 x 2 mm castellated LGA - same |
| Brand | Embit | Embit | Embit |
| Frequency Band | 868/915 MHz (unified /UL) | 868 MHz focused | 868/915 MHz (unified) |
| Max Output Power | +18 dBm (US) / +14 dBm (EU) | +18 dBm (US) / +14 dBm (EU) | +18 dBm (US) / +14 dBm (EU) |
| Receiver Sensitivity | -136 dBm | -136 dBm | -136 dBm |
| Sleep Current | < 1 uA | < 1 uA | < 1 uA |
| LoRaWAN Classes | Class A and Class C | Class A and Class C | Class A and Class C |
| Interfaces | UART, I2C, SPI, USB 2.0 FS, digital/analog I/O | UART, I2C, SPI, USB 2.0 FS, digital/analog I/O | UART, I2C, SPI, USB 2.0 FS, digital/analog I/O |
关键差异点
- Smallest LoRaWAN module footprint （对比 EMB-LR1276S (family reference))
- Unified dual-band firmware variant （对比 EMB-LR1276S)
- Trade-off: castellated LGA vs connectorized modules （对比 EMB-LR1276S-Dev_Board)
设计说明
The EMB-LR1276S/UL is a castellated LGA module with 50-ohm RF behavior dependent on the host PCB. Follow the Embit datasheet recommended land pattern exactly, keep the antenna feed as short as possible, and provide a continuous ground plane under the module body with stitching vias along the RF section edge. If an external antenna connector is used, place a pi-network (series 0 ohm plus two unpopulated shunt pads) at the feed for antenna tuning after range testing in the real enclosure.
To realize the sub-1 uA sleep figure, the host must deassert all active interface lines (UART/SPI/USB) and ensure no pull-ups bias module I/Os high during sleep; residual leakage through bus pull-ups frequently dominates the system current budget in battery nodes. Decouple the module supply with at least a 10 uF bulk plus 100 nF ceramic at the supply pin, and confirm the host regulator's own quiescent current is also in the sub-uA class, otherwise the module's sleep savings are masked.
The /UL variant is configured for both EU868 and US915 - ensure the LoRaWAN stack regional parameters (channel plan, duty cycle, dwell time) match the deployment region at provisioning, not at PCB design time. Also note output power differs by region (+14 dBm EU, +18 dBm US); firmware must never override the regulatory limit. Finally, plan the antenna in the enclosure early: LoRa range at -136 dBm sensitivity is only achieved with a well-matched antenna, and a detuned wire antenna inside metal housings is the most common field failure reported for compact LoRa modules.
合规信息
Compliance declarations were not present in the retrieved web data. The module is LoRaWAN specification compliant (Class A and Class C) per the Embit product page; regional radio regulatory limits are +14 dBm (EU) and +18 dBm (US). Request RoHS/REACH declarations from Embit directly.
