Circuit Protection of Keypad Solutions

Solutions:

Solutions:

Solutions:

Protection Application:: Keypads and various buttons can be an entry way for ESD into an application. These circuits are low-voltage DC switches, typically less than 5VDC, so capacitance is not a concern.
Solution Description:: The examples contain four lines for demonstration purposes. The actual number will vary by application. A single diode array cab be used to reduce part count. Discrete diodes can also be used to provide the greatest board layout flexibility.
Companion Solutions:: Other solutions within the LF portfolio exist in addition to these recommendations. For example, if discrete diodes with smaller footprint are desired, the SP1005-01WTG (0201) can be used.
Regulatory Issues:: The IEC 61000-4-2 will be the most appropriate standard that applies for these circuits. It supplies a test method for verifying that the end product is not susceptible to ESD events.
Unique Features:
Application Warnings:

Solutions

SP1001
8pF, 15kV, Unidirectional TVS Array for ESD Protection - Qualified to AEC-Q101
SP1003
30pF, 30kV, 0402 Unidirectional TVS Diode for ESD Protection - Qualified to AEC-Q101
SP0504BACT
TVS Avalanche Diode Array in a Unipolar Chip Scale Package
SP0504BAHT
Surface Mount TVS Avalanche Diode Arrays
SP0504BAHTG
30pF, 30kV, Unidirectional TVS Array for ESD Protection
SP0504BAJT
Surface Mount TVS Avalanche Diode Arrays
SP0504BAJTG
30pF, 30kV, Unidirectional TVS Array for ESD Protection