The Walsin SR391K18ES40F is a metal oxide varistor with a clamping voltage of 429V and a voltage tolerance of 10%. It has a maximum operating temperature range of -55°C to 85°C and can withstand a maximum surge current of 9kA. The varistor is packaged in a radial lead style with a 7.5mm lead pitch and a depth of 9mm, suitable for through-hole mounting. It has a capacitance of 800pF and a maximum voltage rating of 330V DC and 250V AC.
| RoHS |
Compliant |
| Depth |
9mm |
| Mount |
Through Hole |
| Packaging |
Bulk |
| Lead Pitch |
7.5mm |
| Capacitance |
800pF |
| Package/Case |
Radial |
| Lead/Base Style |
Radial |
| Clamping Current |
75A |
| Clamping Voltage |
650V |
| Varistor Voltage |
429V |
| Max Surge Current |
9kA |
| Voltage Tolerance |
10% |
| Max Voltage Rating (AC) |
250V |
| Max Voltage Rating (DC) |
330V |
| Max Operating Temperature |
85°C |
| Min Operating Temperature |
-55°C |