SLLA305A May 2010 – September 2023 ESD441 , TPD12S015 , TPD12S015A , TPD12S016 , TPD12S520 , TPD12S521 , TPD13S523 , TPD1E05U06 , TPD1E10B06 , TPD1E10B09 , TPD1E6B06 , TPD1S414 , TPD1S514 , TPD2E001 , TPD2E001-Q1 , TPD2E009 , TPD2E1B06 , TPD2E2U06 , TPD2E2U06-Q1 , TPD2EUSB30 , TPD2EUSB30A , TPD2S017 , TPD3F303 , TPD3S014 , TPD3S044 , TPD4E001 , TPD4E001-Q1 , TPD4E004 , TPD4E02B04 , TPD4E05U06 , TPD4E05U06-Q1 , TPD4E101 , TPD4E1B06 , TPD4E1U06 , TPD4E6B06 , TPD4EUSB30 , TPD4S010 , TPD4S012 , TPD4S014 , TPD4S1394 , TPD4S214 , TPD5E003 , TPD5S115 , TPD5S116 , TPD6E001 , TPD6E004 , TPD6E05U06 , TPD6F002 , TPD6F002-Q1 , TPD6F003 , TPD6F202 , TPD7S019 , TPD8E003 , TPD8F003 , TPD8S009
The IEC 61000-4-2 rating consists of two measurements: contact and air. The contact rating is the maximum voltage a device can withstand from discharging an ESD pulse directly onto the device. The air-gap rating is similar, instead of discharging directly onto the device, this test involves discharging an ESD pulse over a gap of air onto the device. The higher the rating, the higher the voltage a device can withstand.
Table 4-4 breaks down the different levels to the IEC 61000-4-2 ratings. Most, if not all of TI ESD protection devices comply with the level 4 or higher rating for contact discharge, and most comply to level 4 or higher rating for air-gap discharge.
Level | Contact Discharge | Air Discharge |
---|---|---|
Test Voltage (± kV) | Test Voltage ( ± kV) | |
1 | 2 | 2 |
2 | 4 | 4 |
3 | 6 | 8 |
4 | 8 | 15 |
X | Custom | Custom |
Table 4-5 shows the IEC ratings in a data sheet for an ESD protection device with a level 4 rating in both contact and air-gap discharge. The device is able to function up to the values provided in Table 4-5. For example, some ESD devices are able to function up to 30-kV contact/30-kV air-gap discharge which is greater than level 4 IEC rating.
VALUE | UNIT | |||
---|---|---|---|---|
V (ESD) | Electrostatic discharge | IEC 61000-4-2 contact discharge | ±8000 | V |
IEC 61000-4-2 air-gap discharge | ±15000 |