Y40625K00000Q0R Datasheet, PDF (5/7 Pages) Vishay Siliconix – Ultra High Precision Foil Wraparound Surface Mount Chip Resistor

ELECTROSTATIC DISCHARGE (ESD)
ESD can be categorized into three types of damages
Parametric Failure - occurs when the ESD event alters one or more
device parameters (resistance in the case of resistors), causing it to
shift from its required tolerance. This failure does not directly pertain
to functionality; thus a parametric failure may be present while the
device is still functional.
Catastrophic Damage - occurs when the ESD event causes the
device to immediately stop functioning. This may occur after one or
a number of ESD events with diverse causes, such as human body
discharge or the mere presence of an electrostatic field.
Latent Damage - occurs when the ESD event causes moderate
damage to the device, which is not noticeable, as the device appears
to be functioning correctly. However, the load life of the device has
been dramatically reduced, and further degradation caused by
operating stresses may cause the device to fail during service.
Latent damage is the source for greatest concern, since it is very
difficult to detect by re-measurement or by visual inspection, since
damage may have occurred under the external coating.
TEST DESCRIPTION
By using an electrolytic 500 pF capacitor charged up to 4500 V,
pulses were performed on groups of 10 units of 1206, 10 k of three
different Surface Mount Chip Resistors technologies, with an initial
voltage spike of 2500 V (Figure 6). The unit was allowed time to cool
down, after which the resistance measurement was taken and
displayed in ppm deviation from the initial reading. Readings were
then taken in 500 V increments up to 4500 V. Table 5 shows the
maximum drift in each group.
New - For live demonstration of ESD pulses, please visit our new
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TEST RESULTS
FIGURE 6 - ESD TEST DESCRIPTION
2500 V to 4500 V
1 MΩ
500 pF
Rx
DMM
TABLE 5 - ESD TEST RESULTS
VOLTS
THICK FILM
∆R (%)
THIN FILM
2500
-2.7
97
3000
-4.2
366
3500
-6.2
>5000
4000
-7.4
>5000
4500
-8.6
OPEN
FOIL
<0.005
<0.005
<0.005
<0.005
<0.005
Document Number: 63211
Revision: 20-Mar-12
For any questions, contact: [e-mail]
www.vishayfoilresistors.com
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