Flat DC-Micromotors Series 1506 ... SR

Precious Metal Commutation

Key Features

Nominal voltage:

3 ... 12 V

Rated torque up to:

0.444 mNm

No-load speed up to:

12900 min⁻¹

Stall torque up to:

0.644 mNm

Diameter:

15 mm

Length:

5.5 mm

Advantages

Extremely flat design. Lengths ranging from 6 mm to 19 mm

4-pole design

Minimal moment of inertia

Integrated spur gearheads of minimal length with high gear ratio are available

Available with integrated optical encoders

Variants:

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	3 V
Terminal resistance	R	13.6 Ω
Efficiency, max.	η_max.	65 %
No-load speed	n₀	11200 min⁻¹
No-load current	I₀	0.00814 A
Stall torque	M_H	0.522 mNm
Friction torque	M_R	0.02 mNm
Speed constant	k_n	3880 min⁻¹/V
Back-EMF constant	k_E	0.258 mV/min⁻¹
Torque constant	k_M	2.46 mNm/A
Current constant	k_I	0.406 A/mNm
Slope of n-M curve	Δn/ΔM	21500 min⁻¹/mNm
Rotor inductance	L	275 µH
Mechanical time constant	τ_m	18 ms
Rotor inertia	J	0.08 gcm²
Angular acceleration	α_max.	65 ·10³rad/s²
Thermal resistance	R_th1/R_th2	25 / 35 K/W
Thermal time constant	τ_w1/τ_w2	4.5 / 48 s
Operating temperature range		-25 ... 80 °C
Winding temperature, max.		85 °C
Housing material		plastic
Mass		4.3 g
Direction of rotation		clockwise, viewed from the front face
Speed up to	n_max.	16000 min⁻¹
Number of pole pairs		2
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	6 V
Terminal resistance	R	60.5 Ω
Efficiency, max.	η_max.	63 %
No-load speed	n₀	11800 min⁻¹
No-load current	I₀	0.00431 A
Stall torque	M_H	0.441 mNm
Friction torque	M_R	0.02 mNm
Speed constant	k_n	2050 min⁻¹/V
Back-EMF constant	k_E	0.487 mV/min⁻¹
Torque constant	k_M	4.65 mNm/A
Current constant	k_I	0.215 A/mNm
Slope of n-M curve	Δn/ΔM	26700 min⁻¹/mNm
Rotor inductance	L	1160 µH
Mechanical time constant	τ_m	22.4 ms
Rotor inertia	J	0.08 gcm²
Angular acceleration	α_max.	55.1 ·10³rad/s²
Thermal resistance	R_th1/R_th2	25 / 35 K/W
Thermal time constant	τ_w1/τ_w2	4.5 / 48 s
Operating temperature range		-25 ... 80 °C
Winding temperature, max.		85 °C
Housing material		plastic
Mass		4.3 g
Direction of rotation		clockwise, viewed from the front face
Speed up to	n_max.	16000 min⁻¹
Number of pole pairs		2
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	12 V
Terminal resistance	R	156 Ω
Efficiency, max.	η_max.	68 %
No-load speed	n₀	12900 min⁻¹
No-load current	I₀	0.00232 A
Stall torque	M_H	0.644 mNm
Friction torque	M_R	0.02 mNm
Speed constant	k_n	1110 min⁻¹/V
Back-EMF constant	k_E	0.904 mV/min⁻¹
Torque constant	k_M	8.63 mNm/A
Current constant	k_I	0.116 A/mNm
Slope of n-M curve	Δn/ΔM	20000 min⁻¹/mNm
Rotor inductance	L	3550 µH
Mechanical time constant	τ_m	16.8 ms
Rotor inertia	J	0.08 gcm²
Angular acceleration	α_max.	80.5 ·10³rad/s²
Thermal resistance	R_th1/R_th2	25 / 35 K/W
Thermal time constant	τ_w1/τ_w2	4.5 / 48 s
Operating temperature range		-25 ... 80 °C
Winding temperature, max.		85 °C
Housing material		plastic
Mass		4.3 g
Direction of rotation		clockwise, viewed from the front face
Speed up to	n_max.	16000 min⁻¹
Number of pole pairs		2
Magnet material		NdFeB

Operating Area

Recommended operation areas at nominal voltage 3 V

The diagram indicates the recommended speed in relation to the available torque at the output shaft for a given ambient temperature of 22°C.

The diagram shows the motor in a completely insulated as well as thermally coupled condition (R_th2 50% reduced).

The nominal voltage (U_N) curve shows the operating point at nominal voltage in the insulated and thermally coupled condition. Any points of operation above the curve at nominal voltage will require a higher operating voltage. Any points below the nominal voltage curve will require less voltage.

Characteristic curves of motor