Multilayer ceramic capacitors
Leaded capacitors, X7R
Date:
October 2006
Data Sheet
ã
EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the
information contained therein without EPCOS’ prior express consent is prohibited.
Multilayer ceramic capacitors
X7R
Ordering code system
Leaded
B37979N
1
100
K
0
54
Packaging
51
^
cardboard tape, reel packing (360-mm reel)
54
^
Ammo packing (standard)
00
^
bulk
Internal coding
Capacitance tolerance
J
^
±
5% (standard for C0G)
K
^
±10%
(standard for X7R)
M
^
±20%
(standard for Z5U (Y5U))
Capacitance,
coded
(example)
101
^
10 · 10
1
pF = 100 pF
222
^
22 · 10
2
pF = 2.2 nF
473
^
47 · 10
3
pF = 47 nF
Rated voltage
Rated voltage [VDC]
Code
50
5
100
1
Type and size
With radial leads
EIA standard
Lead spacing 2.5 mm
5.5
´
5.0
´
2.5
6.5
´
5.0
´
2.5
Lead spacing 5.0 mm
5.5
´
5.0
´
2.5
6.5
´
5.0
´
2.5
9.0
´
7.5
´
2.5
Temperature characteristic
C0G
X7R
B37979N
B37986N
B37981M
B37987M
Z5U (Y5U)
B37982N
B37988N
B37979G
B37986G
—
B37981F
B37987F
B37984M
B37982G
B37988G
B37985N
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
10/06
Multilayer ceramic capacitors
X7R
Features
■
■
■
■
■
Leaded
High volumetric efficiency
Non-linear capacitance change
High insulation resistance
High pulse strength
To AEC-Q200
Applications
■
Blocking
■
Coupling and decoupling
■
Interference suppression
Termination
■
Parallel wire leads, iron-nickel, tinned
■
Crimped leads
■
Non-standard lead lengths on request
Marking
■
Rated capacitance, tolerance, manufacturer’s logo, ceramic material, voltage
Delivery mode
■
Cardboard tape in Ammo packing (standard)
■
Cardboard tape on 360-mm reel or bulk on request
Electrical data
Temperature characteristic
Max. relative capacitance change
within –55
°
C to +125
°
C
Climatic category (IEC 60068-1)
Standard
Dielectric
Rated voltage
1)
Test voltage
Capacitance range / E series
Dissipation factor (limit value)
Insulation resistance
2)
at + 25
°
C
Insulation resistance
2)
at +125
°
C
Time constant
2)
at + 25
°
C
Time constant
2)
at +125
°
C
Operating temperature range
Ageing
3)
X7R
D
C/C
V
R
V
test
C
R
tan
d
R
ins
R
ins
t
t
T
op
±
15
55/125/56
EIA
Class 2
50, 100
2.5 · V
R
/5 s
470 pF … 1
m
F (E6)
<25 · 10
–3
>10
5
>10
4
>1000
>100
–55 … +125
yes
%
VDC
VDC
M
W
M
W
s
s
°
C
1) Note: No operation on AC line.
2) For C
R
>10 nF the time constant
t
= C · R
ins
is given.
3) Refer to chapter “General technical information”, “Ageing”.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
10/06
X7R
Multilayer ceramic capacitors
X7R
Capacitance tolerances
Code letter
Tolerance
K
(standard)
M
Dimensional drawing
w
th
**)
30+5
*)
h
±
10%
±
20%
ø0.50±0.05
e
*)
Lead length for bulk packaging
**)
Seating plane to IEC 600717
KKE0456-R-E
Dimensions (mm)
Lead spacing
Type
B37981M
= 2.5 +0.6/–0.1 mm
B37987M
Lead spacing
Type B37981F
= 5.0 +0.6/–0.1 mm
B37984M
B37987F
h
max
w
max
th
max
5.5
5.0
2.5
6.5
5.0
2.5
h
max
w
max
th
max
5.5
5.0
2.5
6.5
5.0
2.5
9.0
7.5
2.5
Termination
h
s
Ceramic dielectric
Termination
Encapsulation
b
Metal layers
KKE0457-Z-E
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
10/06
X7R
Multilayer ceramic capacitors
X7R
Product range leaded capacitors, X7R
Lead spacing
2.5 mm
5.0 mm
h
´
b
´
s (mm) 5.5
´
5.0
´
2.5 6.5
´
5.0
´
2.5 5.5
´
5.0
´
2.5 6.5
´
5.0
´
2.5 9.0
´
7.5
´
2.5
Type
V
R
(VDC)
C
R
470. pF
680. pF
1.0 nF
1.5 nF
2.2 nF
3.3 nF
4.7 nF
6.8 nF
10. nF
15. nF
22. nF
33. nF
47. nF
68. nF
100. nF
150. nF
220. nF
330. nF
470. nF
680. nF
1.0
m
F
B37981M
50
100
B37987M
50
100
B37981F
50
100
B37987F
50
100
B37984M
50
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
10/06
PCB Design
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