DC motor A17B-21

brushed4.5 Vcoreless

Overview
The A17B series is a family of coreless (brush) DC micromotors manufactured by C.I. TAKIRON. All models share a 17.4 mm outer diameter and are available in multiple lengths (15.8 mm and 18.4 mm) and electrical configurations. Models are optimized for different applied voltages, terminal resistances, speed and torque points to suit compact ventilation, microfan, medical and small-actuator applications.

Key specifications (selected models)

• A17B-43 — Length 15.8 mm, Applied voltage 3.7 V, Terminal resistance 1.50 Ω, No-load speed 16,140 r/min, No-load current 32 mA, Max output 2.22 W
• A17B-44 — Length 18.4 mm, Applied voltage 12.0 V, Terminal resistance 7.8 Ω, No-load speed 17,900 r/min, No-load current 15 mA, Max output 4.52 W
• A17B-41 — Length 18.4 mm, Applied voltage 18.0 V, Terminal resistance 13.4 Ω, No-load speed 22,300 r/min, No-load current 16 mA, Max output 5.89 W
• A17B-40 — Length 18.4 mm, Applied voltage 12.0 V, Terminal resistance 5.19 Ω, No-load speed 22,000 r/min, No-load current 25 mA, Max output 6.78 W
• A17B-29 — Length 18.4 mm, Applied voltage 7.4 V, Terminal resistance 2.35 Ω, No-load speed 22,000 r/min, No-load current 30 mA, Max output 5.72 W
• A17B-17 — Length 18.4 mm, Applied voltage 4.5 V, Terminal resistance 0.30 Ω, No-load speed 13,800 r/min, No-load current 21 mA, Max output 1.64 W

A17B-43 Product Details

• Model: A17B-43
• Outer diameter: 17.4 mm
• Length: 15.8 mm
• Applied voltage: 3.7 V
• Terminal resistance: 1.50 Ω
• No-load rotation speed: 16,140 r/min
• No-load current: 32 mA
• Startup current: 2,467 mA
• Startup torque: 5.26 mN·m
• Max efficiency: 78.5 %
• Max output: 2.22 W

Customizable items (series & models)

• Lead pin
• Lead wire
• Grounding terminal

Notes
Specifications given are representative per-model data (outer diameter, length, recommended/applied voltage, terminal resistance, no-load speed/current, startup current/torque, and max efficiency/output). For full per-model tables and detailed performance curves, consult the A17B series datasheet on the manufacturer page.