Reference Characteristics : Motor Size PM42S-096 Number of Steps per Rotation  : 96(3.75°/Step) Drive Method :  2-2 PHASE Drive Circuit UNIPOLAR CONST. VOLT. BIPOLAR CHOPPER Current/Phase 500[mA] Coil Resistance/Phase :  90[Ω] 10[Ω] Drive IC  : 2SC3346 UDN2916B-V Magnet Material : Nd-Fe-B bonded magnet (MS70) Insulation Resistance : 100M[Ω] MIN   Dielectric Strength : AC 500[V] 1[min] Class of Insulation : CLASS E Operating Temp.  : -10[°C] ~ 50[°C] Storage Temp. :  -30[°C] ~ 80[°C] Operating Hum. : 20[%] RH ~ 90[%] RH