Philips Semiconductors
Quadruple ESD transient voltage suppressor
Product specification
BZA420A
handbook, full pagewidth
ESD TESTER
RZ
CZ
450 Ω
RG 223/U
50 Ω coax
10×
ATTENUATOR
note 1
DIGITIZING
OSCILLOSCOPE
50 Ω
IEC 1000-4-2 network
CZ = 150 pF; RZ = 330 Ω
1/4 BZA420A
vertical scale = 100 V/Div
horizontal scale = 50 ns/Div
Note 1: attenuator is only used for open
socket high voltage measurements
vertical scale = 10 V/Div
horizontal scale = 50 ns/Div
GND
unclamped +1 kV ESD voltage waveform
(IEC 1000−4−2 network)
GND
GND
clamped +1 kV ESD voltage waveform
(IEC 1000−4−2 network)
GND
vertical scale = 100 V/Div
horizontal scale = 50 ns/Div
unclamped −1 kV ESD voltage waveform
(IEC 1000−4−2 network)
vertical scale = 10 V/Div
horizontal scale = 50 ns/Div
clamped −1 kV ESD voltage waveform
(IEC 1000−4−2 network)
MBK386
Fig.6 ESD clamping test set-up and waveforms.
1999 May 20
5