XB3-24Z8UM-J - XBee 3 Zigbee 3.0 Module, 2.4 GHz, U.FL Antenna | Digi
MPN： XB3-24Z8UM-J ✓ 啟用中XB3-24Z8UM-J 概覽
A Zigbee module is a pre-certified, drop-in radio subsystem that bundles an RF transceiver IC, crystal, matching network, and PCB antenna or U.FL connector onto a single castellated PCB. XBee modules sit in the broader category of embedded wireless modules, above discrete RF transceivers and below complete IoT gateways. They are widely used to add Zigbee, Thread, or Bluetooth connectivity to a host MCU without requiring the designer to handle RF layout, FCC certification, or mesh protocol stacks. The XBee 3 family specifically combines Zigbee 3.0 with Bluetooth Low Energy (BLE) for provisioning and supports MicroPython for on-module scripting.
Key features of the XB3-24Z8UM-J include an integrated Silicon Labs EFR32MG SoC, DSSS spread-spectrum modulation for robust 2.4 GHz operation, an operating temperature range that supports industrial deployment, and an ultra-low sleep current that suits battery-powered wireless sensor nodes. The U.FL antenna variant allows designers to attach an external antenna for enclosures where an on-module chip antenna would suffer detuning. The Micro form factor keeps the module footprint roughly 13 mm × 19 mm, enabling dense IoT endpoint designs.
From an architectural standpoint, the XB3-24Z8UM-J separates the radio domain (EFR32MG SoC + RF frontend + shield can) from the host domain (UART/SPI/I2C). The on-board ARM Cortex-M4F core runs the Zigbee 3.0 stack and optional MicroPython, while the host MCU exchanges AT commands or API frames. This split keeps the host firmware simple and shields the application processor from real-time RF stack management.
Typical applications include Zigbee wireless sensor networks for smart buildings, industrial telemetry, smart lighting and home automation, asset tracking, and battery-powered remote controls. The combination of low sleep current, mesh networking, and MicroPython programmability suits edge-deployed sensor nodes with infrequent wake cycles. For projects requiring an external antenna placement (for example, inside a metal enclosure), the U.FL variant is the correct choice; for exposed-product designs, the chip-antenna variant (XB3-24Z8CM-J) may be preferred.
When designing with the XB3-24Z8UM-J, ensure the host board provides a stable 3.3 V rail capable of peak transmit current bursts (about 130 mA typical) and that the U.FL antenna cable is kept short and away from noise sources. The castellated edge pads require clean solder paste printing and a reflow profile compatible with the integrated shield can; hand-soldering the module is not recommended. Always confirm regional Zigbee channel selection against local regulations (Wi-Fi coexistence considerations in the 2.4 GHz band).
This page synthesizes distributor pricing, drop-in XBee 3 family alternatives, and practical design notes not found in the manufacturer datasheet alone. Use the comparison table and selection guide below to choose between the U.FL, chip antenna, PRO, and non-PRO variants.
直接替換替代品，適用於 XB3-24Z8UM-J — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： XB3-24Z8UM-J （相同外形與佔位） — 差異在於 Frequency Band, Protocol.
XB3-24Z8CM-J
✅ 直接替換📋 參考替代品（不在目錄中）
XB3-24Z8UM
✅ 直接替換聯絡詢價
查看資料表 →XB3-24Z8UT-J
✅ 直接替換📋 參考替代品（不在目錄中）
XB3-24Z8CM
✅ 直接替換📋 參考替代品（不在目錄中）
XB3-24Z8RM
✅ 直接替換📋 參考替代品（不在目錄中）
XB3-24Z8UM-J 規格（製造商公布）
| Protocol | 802.15.4 Zigbee 3.0 |
| Frequency Band | 2.4 GHz ISM |
| RF Data Rate | 250 Kbps |
| Serial Data Rate (max) | 1 Mbps |
| Modulation | DSSS (Direct Sequence Spread Spectrum) |
| Antenna Type | U.FL connector (antenna not included) |
| 供應電壓 | 2.1 V to 3.6 V |
| Host Interfaces | UART, SPI, I2C |
| Onboard SoC | Silicon Labs EFR32MG |
| Package Type | 34-pin SMD Module (Micro) |
| 安裝方式 | Surface Mount (castellated pads) |
| Programmability | MicroPython / AT commands / API frames |
| Modulation Spreading | DSSS, O-QPSK |
| RoHS 狀態 | Compliant |
XB3-24Z8UM-J 介面與連接器
XB3-24Z8UM-J 依製造商公布提供以下介面與連接器：功率輸入。擴充排針腳位、連接器腳位編號與電氣限制均定義於製造商文件中。
| 功率輸入 | 2.1 V to 3.6 V |
請參閱 製造商文件 以取得完整的擴充排針腳位定義與連接器腳位編號。
功率與熱特性
| 功率輸入 | 2.1 V to 3.6 V |
XB3-24Z8UM-J 由製造商公布的功率輸入與熱參數。
典型應用
XB3-24Z8UM-J 適用於 6 應用s: Zigbee Wireless Sensor Networks, Smart Lighting and Home Automation, Industrial Telemetry and Asset Tracking, Battery-Powered Remote Controls, Building Automation HVAC and Energy Monitoring, Healthcare and Wellness Wearables.
Zigbee Wireless Sensor Networks
The XB3-24Z8UM-J is purpose-built for Zigbee 3.0 wireless sensor networks in industrial and smart-building deployments, where its 250 Kbps DSSS link in the 2.4 GHz ISM band and integrated Silicon Labs EFR32MG SoC deliver reliable mesh connectivity without host-side RF design. Its sub-microamp sleep current and MicroPython programmability let it run autonomously as a battery-powered end device for years on a single cell. Placed on a sensor board with a 3.3 V LDO and a U.FL antenna, it joins a Zigbee coordinator's network within seconds and reports readings over Zigbee Binding or attribute reports.
推薦
Smart Lighting and Home Automation
For Zigbee-compatible smart lighting, the XB3-24Z8UM-J provides the 802.15.4 mesh backbone that allows thousands of bulbs, dimmers, and switches to coordinate reliably. Its 2.1-3.6 V supply range matches the LED driver rails typically found in luminaire designs, while the UART/SPI/I2C host interfaces allow simple integration with low-cost lighting MCUs. Compared with Wi-Fi alternatives, the XB3-24Z8UM-J uses a fraction of the power in sleep mode, which is critical for always-on lighting fixtures where standby power matters.
推薦
Industrial Telemetry and Asset Tracking
In industrial telemetry deployments, the XB3-24Z8UM-J's industrial temperature range and Digi's pre-certified regulatory approvals (FCC, IC, CE, ETSI, ACMA) simplify end-product compliance for global rollouts. The U.FL antenna variant allows mounting the radio inside a metal enclosure with an external antenna, which is common for asset-tracking tags on shipping containers or factory-floor equipment. The on-board MicroPython engine can run local filtering, thresholding, and store-and-forward logic before sending data upstream, reducing backhaul traffic.
推薦
Battery-Powered Remote Controls
The XB3-24Z8UM-J is an excellent choice for battery-powered Zigbee remote controls and wall switches thanks to its microamp-level sleep current and fast wake-to-transmit cycle on the Silicon Labs EFR32MG core. Pairing is simplified by Zigbee 3.0's commissioning model combined with BLE for initial setup, eliminating the need for separate pairing hardware. Designers can run the entire button-decode and transmit logic in MicroPython directly on the module, eliminating a host MCU and BOM cost in small-form-factor remotes.
推薦
Building Automation HVAC and Energy Monitoring
For HVAC and energy monitoring endpoints, the XB3-24Z8UM-J's Zigbee 3.0 stack reports temperature, humidity, occupancy, and energy use to a building automation system over a self-healing mesh. The 2.1-3.6 V supply range simplifies power design from 24 VAC wall adapters with a small buck regulator, and the 250 Kbps RF rate is more than sufficient for the low-bandwidth telemetry these endpoints generate. The Micro form factor allows dense installation inside equipment housings without RF interference concerns when paired with the U.FL variant.
推薦
Healthcare and Wellness Wearables
In healthcare and wellness wearables such as patient monitors and personal emergency-response pendants, the XB3-24Z8UM-J's low sleep current and BLE co-existence with Zigbee 3.0 enable long battery life and easy provisioning in clinical environments. The on-board MicroPython core lets the module handle local sensor sampling and threshold detection, only waking the radio when an alert event is detected. The U.FL antenna variant allows the antenna to be routed to a body-worn location optimized for RF performance away from the user's body.
推薦
推薦產品摘要
工程參考資料，適用於 XB3-24Z8UM-J — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | XB3-24Z8CM-J | XB3-24Z8UM | XB3-24Z8UT-J | XB3-24Z8CM | XB3-24Z8RM |
|---|---|---|---|---|---|---|
| Package | 34-pin SMD Micro Module (U.FL) | 34-pin SMD Micro Module (chip antenna) | 34-pin SMD Micro Module (U.FL, PRO) | 34-pin SMD Micro Module (U.FL, Thread) | 34-pin SMD Micro Module (chip antenna, PRO) | 34-pin SMD Micro Module (U.FL, DigiMesh) |
| Brand | Digi | Digi | Digi | Digi | Digi | Digi |
| Protocol | Zigbee 3.0 | Zigbee 3.0 | Zigbee 3.0 (PRO) | Thread | Zigbee 3.0 (PRO) | DigiMesh |
| Antenna | U.FL connector | On-module chip antenna | U.FL connector | U.FL connector | On-module chip antenna | U.FL connector |
| Supply Voltage | 2.1 V to 3.6 V | 2.1 V to 3.6 V | 2.1 V to 3.6 V | 2.1 V to 3.6 V | 2.1 V to 3.6 V | 2.1 V to 3.6 V |
| RF Data Rate | 250 Kbps | 250 Kbps | 250 Kbps | 250 Kbps | 250 Kbps | 250 Kbps |
| TX Power Class | Standard | Standard | PRO (higher) | Standard | PRO (higher) | Standard |
| Module Family | XBee 3 Micro | XBee 3 Micro | XBee 3 PRO Micro | XBee 3 Thread Micro | XBee 3 PRO Micro | XBee 3 DigiMesh Micro |
主要差異化特點
- Pre-certified regulatory approvals eliminate end-product RF testing (對比Discrete Silicon Labs EFR32MG transceiver design)
- External U.FL antenna for enclosed/metal-housed designs (對比XB3-24Z8CM-J)
- On-module MicroPython programmability eliminates host MCU (對比Raw 802.15.4 transceiver ICs)
設計說明
Estimated: the XB3-24Z8UM-J draws up to 130 mA during TX bursts on a 3.3 V rail; use a regulator with at least 200 mA headroom and place a 10 uF + 0.1 uF decoupling pair as close as possible to the supply pins. A switching regulator is acceptable if its switching frequency is above the Zigbee 2.4 GHz band and its ripple is suppressed by the input LC filter. Avoid LDO-only designs on long cable drops that can sag during transmit bursts.
Keep the U.FL antenna pigtail short (under 50 mm) and route it away from the host MCU clock traces and switching regulators to minimize radiated noise pickup. The castellated edge pads require reflow soldering with a stencil designed for the integrated shield can - hand-soldering is not recommended as it can introduce pad bridges under the can. Ground flood the host PCB under the module landing area, with thermal vias stitching to the inner ground plane for heat dissipation during continuous TX.
Do not exceed 3.6 V on VCC or reverse the supply polarity - the XB3-24Z8UM-J does not include reverse-polarity protection. Ensure the U.FL connector is mated with a proper torque-limited U.FL plug (not a generic coax); improper mating detunes the antenna. Confirm Zigbee channel selection (11-26) against local 2.4 GHz Wi-Fi usage to avoid interference in dense deployments.
合規資訊
RoHS and REACH compliant per Digi product environmental documentation. Pre-certified for FCC, IC, CE, ETSI, and ACMA regulatory domains. Not AEC-Q100 qualified - automotive applications should consult Digi automotive-grade module portfolio.
