Do you know the difference between safety Y1 capacitors and safety Y2 capacitors?

There are many types of capacitors, some with different models, and some with the same model but different voltages and other aspects, such as safety capacitors. Safety capacitors are used in such occasions that after the capacitor fails, it will not cause electric shock and endanger people. Because after the external power supply is disconnected, the safety capacitor will discharge quickly, and people will not feel electric shock when touching it with their hands.

Safety capacitors are divided into safety X capacitors and safety Y capacitors. Although both safety X capacitors and safety Y capacitors are safety capacitors, they are different in appearance and easy to distinguish, so you don't have to worry about making the wrong choice when purchasing. However, safety Y capacitors are also divided into Y1 capacitors, Y2 capacitors, Y3 capacitors and Y4 capacitors. The capacitors that are more familiar and used are still Y1 capacitors and safety Y2 capacitors, while Y3 and Y4 capacitors are less used.

Safety Y1 capacitors and safety Y2 capacitors look exactly the same, and their nominal capacitance is the same. If you don't know the difference between them, it's easy to make a mistake and buy the wrong safety capacitor. Today, let me show you the difference between safety Y1 capacitors and Y2 capacitors.

JEC safety capacitors

1. Different foot spacing

The pin pitch of safety Y1 capacitors is large, usually 9.5MM or 10MM; the pin pitch of safety Y2 capacitors is 7.5MM.

2. Different pressure resistance

Safety Y1 capacitors have high withstand voltage. The rated voltage of safety Y1 is 500VAC, and the withstand voltage can reach 4000VAC; the rated voltage of safety Y2 is 500VAC, and the withstand voltage reaches 1800-2600VAC.

3. Different insulation

The insulation types of the two are different. Safety Y1 capacitors belong to double insulation (JD); safety Y2 capacitors belong to basic insulation (JY).

4. Different usage occasions

The two are used in different occasions. The safety Y1 capacitor is used to bridge the primary and secondary sides; the safety Y2 capacitor is used to bridge the secondary side to protect the ground, i.e. the FG line.

5. Different volume

The capacity is the same but the volume is different. When the capacity is the same, the volume of the safety Y1 capacitor is slightly larger than that of the safety Y2 capacitor.

JEC safety capacitors

After figuring out the difference between safety Y1 capacitors and safety Y2 capacitors, you can choose the right capacitor for the application. It is not a trivial matter to choose the wrong capacitor. It not only costs money, time and energy, but also the wrong type of capacitor is prone to various problems when used in products. Therefore, you must pay attention to the type of capacitor when purchasing capacitors.