14

X7R Dielectric

General Specifications

X7R formulations are called “temperature stable” ceramics

and fall into EIA Class II materials. X7R is the most popular

of these intermediate dielectric constant materials. Its tem-

perature variation of capacitance is within ±15% from

-55°C to +125°C. This capacitance change is non-linear.

Capacitance for X7R varies under the influence of electrical

operating conditions such as voltage and frequency.

X7R dielectric chip usage covers the broad spectrum of

industrial applications where known changes in capaci-

tance due to applied voltages are acceptable.

PART NUMBER (see page 2 for complete part number explanation)

10

-60 -40 -20

0

20

40

60

80 100 120 140

Temperature

°C

X7R Dielectric

Typical Temperature Coefficient

5

0

-5

-10

-15

-20

-25

+10

+20

+30

0

-10

-20

-30

1KHz

10 KHz

100 KHz

1 MHz

10 MHz

Frequency

Capacitance vs. Frequency

1,000

10,000

100

0

0

20

120

40

60

80

Temperature

°C

Insulation Resistance vs Temperature

100

10

100

1000

Frequency, MHz

Variation of Impedance with Cap Value

Impedance vs. Frequency

1,000 pF vs. 10,000 pF - X7R

0805

0.10

0.01

1.00

1,000 pF

10,000 pF

10.00

110

100

1,000

Frequency, MHz

Variation of Impedance with Chip Size

Impedance vs. Frequency

100,000 pF - X7R

0.1

.01

1.0

1206

0805

10

1210

110

100

1,000

Frequency, MHz

Variation of Impedance with Chip Size

Impedance vs. Frequency

10,000 pF - X7R

0.1

.01

1.0

1206

0805

10

1210

0805

Size

(L" x W")

5

Voltage

4V = 4

6.3V = 6

10V = Z

16V = Y

25V = 3

50V = 5

100V = 1

200V = 2

500V = 7

C

Dielectric

X7R = C

103

Capacitance

Code (In pF)

2 Sig. Digits +

Number of Zeros

M

Capacitance

Tolerance

J = ± 5%

K = ±10%

M = ± 20%

2

Packaging

2 = 7" Reel

4 = 13" Reel

7 = Bulk Cass.

9 = Bulk

Contact

Factory For

Multiples

A

Special

Code

A = Std. Product

T

Terminations

T = Plated Ni

and Sn

7 = Gold Plated*

Z= FLEXITERM™**

A

Failure

Rate

A = Not

Applicable

*Optional termination

**See FLEXITERM™

X7R section

NOTE: Contact factory for availability of Termination and Tolerance Options for Specific Part Numbers.

Contact factory for non-specified capacitance values.