Y20-490A
| keyword | 2 poles No lead wire DC discharge starting voltage 490V |
|---|---|
| Product Info | Product name: Y20-490A Item code: 11008995 |
Mounted between the neutral line and ground of the communication circuit board and power supply circuit of the 2-pole arrester (GDT) communication device, and used to protect the device from induced voltage and TOV (temporary overvoltage) induced in the line to do.
Compared to other products, it has a very large current capacity (8 / 20µs, maximum 80kA).
Main applications
- Various electronic devices
- Communication line protection
- AC power supplies
- Inverters
- Very large current withstand capability
- Low capacitance
- Broadband compatible
- Excellent heat and mechanical shock due to use of ceramic envelope
- Excellent current withstand capability and temperature environment characteristics of repeated surge
Dimensions (Unit: mm)
Specification
| item | conditions | Performance |
| DC discharge start voltage | 100 V / s | 490 V ± 70V |
| Impulse discharge start voltage | 10/200 μs, 3 kV | 800 V or less |
| Insulation resistance | DC 250 V | 100 MΩ or more |
| Impulse current capacity | 8/20 μs, 80 kA * | Once |
| Impulse current capacity | 8/20 μs, 60 kA * | 10 times |
| Impulse current capacity | 10/200 μs, 10 kA * | Once |
| Maximum AC current capacity | AC 100A, 1 s * | Once |
| DC holdover voltage | 10/200 μs, 200A, power supply DC200mA, voltage 150V | 150 ms or less |
| Service life | 10/200 μs, 500A | 1000 times |
| Capacitance | - | 5.0 pF or less |
| mass | - | 6.5 g |
* Discharge without cracks or short circuit of electrodes in the ceramic part.
Notes on use
When using this product for AC power, be sure to use it together with a varistor.
If the arrester is used alone, a follow current may occur.
We also have AV series (2 poles) and AV3P series (3 poles) with arresters and varistors integrated.