CH, CHA

www.vishay.com

Vishay Sfernice

Revision: 27-Apr-2022

5

Document Number: 53014

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

The complex impedance of the chip resistor is given by the following equations:

Notes

•

ω = 2 x π x f

• f: frequency

R, L and C are relevant to the chip resistor itself.

C. This combination can upgrade or downgrade the HF behavior of the component.

This is why we are displaying three sets of data:

•

versus frequency curves which aim to show at a glance the intrinsic HF performance of a given chip resistor

•

versus frequency curves which aim to show the behavior of the chip resistor when mounted

CODIFICATION OF PACKAGING

WAFFLE PACK (available for all sizes)

W

100 min., 1 mult.

PLASTIC TAPE (standard packaging for all sizes)

T

100 min., 1 mult.

TA

100 min., 100 mult.

TB

250 min., 250 mult.

TC

500 min., 500 mult.

TD

1000 min., 1000 mult.

TF

Full tape (quantity depending on size of chips)

PAPER TAPE (available for 0402 and 0603 with F, N, and G terminations)

PT

100 min., 1 mult.

PA

100 min., 100 mult.

PB

250 min., 250 mult.

PC

500 min., 500 mult.

TYPICAL HIGH FREQUENCY PERFORMANCE ELECTRICAL MODEL

C

Internal shunt capacitance

L

Internal inductance

R

Resistance

Z

Internal impedance (R, L, C)

External connection inductance

External capacitance to ground

L

c

C

g

Z

0

C

L

R

Z

Z

0

L

c

C

g

Z

R

j

ω L

R

2

C

–

L

2

C

ω

2

–

()

+

1C R

2

C

2L

–

()ω

2

L

2

C

ω

4

+

[]

+

--------------------------------------------------------------------------------------

=

Z

[]

R

--------

1

1

C R

2

C

2L

–

()ω

2

L

2

C

ω

4

+

[]

+

------------------------------------------------------------------------------------------ x

1

ω L

R

2

C

–

L

2

C

ω

2

–

()

R

------------------------------------------------------------

2

+

=

θ

tan

1

–

ω L

R

2

C

–

L

2

C

ω

2

–

()

R

------------------------------------------------------------

=

Z

[]

R

--------

Z

total

[]

R

-------------------