Motor Start, Motor Run Capacitors (AC)

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Capacitance	Tolerance	Voltage Rating - AC	Voltage Rating - DC	Dielectric Material	Operating Temperature	Polarization	Applications	Lead Spacing	Size / Dimension	Height - Seated (Max)	Mounting Type	Package / Case
JS251126-BA CAP FILM 12UF 10% 250VAC CHAS MT Panasonic Electronic Components	755 In Stock	1 : 7,65000 € Bulk	PMF	Bulk	Active	12µF	±10%	250V	-	Polypropylene (PP), Metallized	-25°C ~ 70°C	-	Motor Run	-	1.969" L x 1.051" W (50.00mm x 26.70mm)	1.516" (38.50mm)	Chassis Mount	Rectangular Box
DS441405-BA CAP FILM 4UF 10% 440VAC CHAS MT Panasonic Electronic Components	251 In Stock	1 : 6,94000 € Bulk	PMF	Bulk	Active	4µF	±10%	440V	-	Polypropylene (PP), Metallized	-25°C ~ 70°C	-	Motor Run	-	1.957" L x 0.945" W (49.70mm x 24.00mm)	1.378" (35.00mm)	Chassis Mount	Rectangular Box
JS251156-BA CAP FILM 15UF 10% 250VAC CHAS MT Panasonic Electronic Components	87 In Stock	1 : 7,81000 € Bulk	PMF	Bulk	Active	15µF	±10%	250V	-	Polypropylene (PP), Metallized	-25°C ~ 70°C	-	Motor Run	-	1.969" L x 1.201" W (50.00mm x 30.50mm)	1.654" (42.00mm)	Chassis Mount	Rectangular Box
DS441505-BA CAP FILM 5UF 10% 440VAC CHAS MT Panasonic Electronic Components	22 In Stock	1 : 8,23000 € Bulk	PMF	Bulk	Active	5µF	±10%	440V	-	Polypropylene (PP), Metallized	-25°C ~ 70°C	-	Motor Run	-	1.969" L x 1.051" W (50.00mm x 26.70mm)	1.516" (38.50mm)	Chassis Mount	Rectangular Box
DS441605-BA CAP FILM 6UF 10% 440VAC CHAS MT Panasonic Electronic Components	0 In Stock Check Lead Time	1 : 8,16000 € Bulk	PMF	Bulk	Active	6µF	±10%	440V	-	Polypropylene (PP), Metallized	-25°C ~ 70°C	-	Motor Run	-	1.969" L x 1.201" W (50.00mm x 30.50mm)	1.654" (42.00mm)	Chassis Mount	Rectangular Box
JS251106-BA CAP FILM 10UF 10% 250VAC CHAS MT Panasonic Electronic Components	0 In Stock	Active	PMF	Bulk	Active	10µF	±10%	250V	-	Polypropylene (PP), Metallized	-25°C ~ 70°C	-	Motor Run	-	1.957" L x 0.945" W (49.70mm x 24.00mm)	1.378" (35.00mm)	Chassis Mount	Rectangular Box

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A motor start capacitor provides a temporary power boost to help single-phase electric motors start by creating a phase shift in the windings and is disconnected once the motor reaches operating speed. A run capacitor, on the other hand, stays in the circuit continuously, improving efficiency, torque, and power factor while the motor runs. If a start capacitor fails, the motor may hum, struggle to start, or fail entirely, whereas a faulty run capacitor can cause overheating, reduced efficiency, or motor stalling under load.