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PB-03M

Public Made by Adom

by adom

Ai-Thinker Bluetooth Modules, DIP-18. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PB-03M

Ai-Thinker · Bluetooth Modules · DIP-18

PB-03M from Ai-Thinker, in a DIP-18. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 P31 bidirectional General-purpose I/O GPIO31.
2 P16 bidirectional GPIO16, also the 32.768KHz crystal input.
3 P2 bidirectional GPIO2, also the SWD debug data in/out.
4 P3 bidirectional GPIO3, also the SWD debug clock.
5 P32 bidirectional General-purpose I/O GPIO32.
6 P10 bidirectional RXD (UART receive) or GPIO10.
7 P9 bidirectional TXD (UART transmit) or GPIO9.
8 VDD power_in Power supply, 2.7V to 3.6V (3.3V typical), with supply able to deliver more than 200mA.
9 GND power_in Ground.
10 P15 bidirectional GPIO15, also ADC input 4 or micbias output.
11 P10 bidirectional GPIO10 or RXD; listed as P10 same as pin 6 in the datasheet table.
12 P14 bidirectional GPIO14, also ADC input 3.
13 P34 bidirectional General-purpose I/O GPIO34.
14 P0 bidirectional General-purpose I/O GPIO0.
15 P18 bidirectional GPIO18, also ADC input 7 or PGA negative input.
16 P7 bidirectional General-purpose I/O GPIO7.
17 P11 bidirectional GPIO11, also ADC input 0.
18 P17 bidirectional GPIO17, also the 32.768KHz crystal output.

Key specifications

Parameter Value
Manufacturer Ai-Thinker
Package DIP-18
Category IoT/Communication Modules
Pins 18

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage VDD 2.7 3.3 3.6 V 6
Input low voltage VIL -0.3 0.25 V I/O; printed as -0.3 / 0.25VDD 6
Input high voltage VIH 0.75 V I/O; printed as 0.75VDD / VDD+0.3 6
Output low voltage VOL 0.1 V I/O; printed as 0.1VIO 6
Output high voltage VOH 0.8 V I/O; printed as 0.8VIO 6
Maximum I/O current IMAX 12 mA I/O 6
RF frequency range 2400 2483.5 MHz 6
Output power BLE 2Mbps -20 8 10 dBm BLE 2Mbps 6
Output power BLE 1Mbps -20 8 10 dBm BLE 1Mbps 6
Output power BLE 500Kbps -20 8 10 dBm BLE 500Kbps 6
Output power BLE 125kbps -20 8 10 dBm BLE 125kbps 6
Receive sensitivity BLE 2Mbps -93 dBm BLE 2Mbps 6
Receive sensitivity BLE 1Mbps -96 dBm BLE 1Mbps 7
Receive sensitivity BLE 500Kbps -97 dBm BLE 500Kbps 7
Receive sensitivity BLE 125Kbps -102 dBm BLE 125Kbps 7
TX current 11.5 mA TX_Burst_Test Power output 8dBm; 3.3V 25 C 7
TX current 9 mA TX_Burst_Test Power output 5dBm; 3.3V 25 C 7
TX current 8 mA TX_Burst_Test Power output 0dBm; 3.3V 25 C 7
RX current 9.4 mA RX_Burst_Test; 3.3V 25 C 7
Power Off current 0.57 uA Power Off; 3.3V 25 C 7

CAD (KiCad official)

  • Symbol: PB-03M
  • Footprint: Package_DIP:DIP-18_W7.62mm
  • 3D model: DIP-18 (KiCad packages3D, STEP)
  • 3D model files: pb-03m-etched.step / pb-03m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pb-03m.step / pb-03m.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Ai-Thinker datasheet (22 pp, sha256 6f8f0ca8df4cf444, retrieved 2026-10-24, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF