HM‑BT4502-ST

HM‑BT4502-ST
Details:
The HM BT4502-ST is a Bluetooth 5.0 Low Energy pass through module designed for short range wireless communication with stable connectivity, low power consumption, and compact integration. Built on the CMT4502 chipset, it incorporates 512 KB Flash and 138 KB RAM, supporting 1M/2M PHY. The module delivers +8 dBm transmit power, achieves –97 dBm sensitivity, and operates at 1.8–3.6 V. Its 12.5 × 17 × 2.5 mm SMT package is optimized for automated EMS/PCBA production, ensuring seamless integration into high volume manufacturing environments.
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Description
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Technical Specifications

 

Specification

Value

Type

Bluetooth Low Energy Module

Bluetooth Version

5.0

PHY

1M / 2M

Transmit Power

+8 dBm

Receiver Sensitivity

–97 dBm

Peak Current (Tx)

6.7 mA @ 0 dBm

Peak Current (Rx)

6.7 mA

Sleep Current

13 µA

Operating Voltage

1.8 – 3.6 V

Flash Memory

512 KB

RAM

138 KB

Default Interface

UART (115200 bps)

Dimensions

12.5 × 17 × 2.5 mm

Compliance

RoHS / REACH

 

Application Fields

 

  • Smartphones and tablets – BLE connectivity for mobile devices.
  • Digital equipment – wireless data pass‑through for embedded systems.
  • Smart home automation – alarms, lighting, HVAC, and access control.
  • Consumer electronics – peripherals and wearables.
  • Industrial IoT – sensor networks and machine telemetry.

 

The module's pass‑through capability enables fast BLE communication between devices and host controllers, reducing MCU resource usage and simplifying integration.

 

PCBA Integration Advantages

 

  • SMT Compatibility: Compact 12.5 × 17 mm package supports automated pick‑and‑place and lead‑free reflow soldering.
  • Power Efficiency: Low sleep current (13 µA) ensures extended battery life in IoT and consumer devices.
  • RF Layout Optimization: Maintain impedance‑matched antenna traces and reserve clean RF zones for stable performance.
  • Peripheral Integration: Built‑in UART interface simplifies PCB routing and reduces external component count.
  • Mass Production Ready: Fully compatible with SMT/PCBA processes, compliant with RoHS/REACH standards.

 

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