YC358TJK-074K7L Datasheet, PDF (4/16 Pages) List of Unclassifed Manufacturers – All thick film types of chip resistors have a rectangular ceramic body.

Chip Resistor Surface Mount ^{Thick film technology INTRODUCTION}
Product specification 4
16
NOISE
Most resistors generate noise due to the passage of
current through the resistor. This noise is dependent
on the amount of current, the resistive material and
the physical construction of the resistor. The
physical construction is partly influenced by the laser
trimming process, which cuts a groove in the
resistive material. Typical current noise levels are
shown in Fig. 2.
FREQUENCY BEHAVIOUR
Resistors in general are designed to function
according to ohmic laws. This is basically true of
rectangular chip resistors for frequencies up to 100
kHz. At higher frequencies, the capacitance of the
terminations and the inductance of the resistive path
length begin to have an effect.
Basically, chip resistors can be represented by an
ideal resistor switched in series with a coil and both
switched parallel to a capacitor. The values of the
capacitance and inductance are mainly determined by
the dimensions of the terminations and the
conductive path length. The trimming pattern has a
negligible influence on the inductance, as the path
length is not influenced. Also, its influence on the
capacitance is negligible as the total capacitance is
largely determined by the terminations.
The environment surrounding chips (e.g. landing
paths, nearby tracks and the material of the printed-
circuit board) has a large influence on the behaviour
of the chip on the printed-circuit board.
Size 1206
noise ³⁶
level
μV
V ₃₂
SCR028
28
24
20
16
12
8
4
0
1 10 100 1k 10 k 100 k 1M 10 M
R (Ω)
Fig. 2 Typical noise levels as a function of rated resistance
Mar 25, 2008 V.7
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