Ordering Code
B37984M5474K054
B37984M5474K051
B37984M5474K000
Substitute Product
Date of Withdrawal
2008-08-01
2008-08-01
2008-08-01
Deadline Last
Orders
2009-07-31
2009-07-31
2009-07-13
Last Shipments
2009-10-31
2009-10-31
2009-10-31
For further information please contact your nearest EPCOS sales office, which will also support you in selecting a
suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales.
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
PCB Design
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