Inductors
RF chokes, MCC series
Series/Type:
Date:
B78108T, B78148T
March 2008
Data Sheet
EPCOS AG 2008. Reproduction, publication and dissemination of this publication,
enclosures
hereto
and the information contained therein without EPCOS’ prior express consent is prohibited.
RF chokes
MCC series, 3.3
×
7 (mm)
MCC choke (Mini Cylinder Core)
Rated inductance 0.1
µH
to 100
µH
Rated current 85 mA to 1120 mA
Construction
■
Ceramic or ferrite cylinder core
■
Winding: enamel copper wire
■
Flame-retardant lacquer coating
B78108T, B78148T
B78108T
Features
■
■
■
■
■
Low total height
Low inductance
High resonance frequency
Suitable for wave soldering
RoHS-compatible
B78148T
Applications
■
RF blocking
■
Decoupling and interference suppression
■
For antenna systems, automotive electronics,
telecommunications, entertainment electronics
Terminals
■
Central axial leads (B78108T)
■
Radially bent to 5 mm lead spacing (B78148T)
■
B781
*
T3:
– Base material Staku 30/copper-clad steel 30
– Hot-dipped and electro-plated with pure tin
■
B781
*
T1:
– Base material CuAg0.1
– Hot-dipped with pure tin
Marking
Inductance indicated by color bands to IEC 60062
Delivery mode and packing units
■
Taped, Ammo and reel packing
■
Packing units:
Ammo
(pcs./pack.)
Axial
Radial
5000
2500
Reel
(pcs./reel)
5000
2000
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
03/08
RF chokes
MCC series, 3.3
×
7 (mm)
Dimensional drawings
B78108T (axial leads, taped)
65±1
53±2
B78108T, B78148T
Dimensions in mm
ø0.6 max.
ø3.3 max.
7 max.
(IEC 60294)
6±0.5
3.5 min.
9.8 max.
lacquered
5±0.25 5±0.25
IND0427-U-E
Minimum lead spacing 10 mm
B78148T (central radial leads, taped)
(IEC 60294)
9.8 max.
lacquered
ø3.3 max.
2 max.
2 max.
0.6 max.
0.5 max.
insulated
7 max.
1.3 max.
1.3 max.
29 max.
_
0.5
9
+0.75
16±0.5
Thickness of tape
0.7±0.2
IND0629-B
_
0.5
18
+1
6 min.
3.8±0.7
4±0.2
12.7±0.3
_
0.1
5
+0.6
IND0630-V-E
Packing
ø30.5±0.15
ø82+1
ø90
30
ø360
_
1
30
H
n
w
Label
30
IND0452-V-E
L
W
IND0631-B-E
n (mm): Axial 72 +1, radial 42 +1
w (mm): Axial 84 max., radial 54 max.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
L
×
W
×
H (max. mm):
Axial: 310
×
75
×
120, radial: 340
×
50
×
210
3
03/08
RF chokes
MCC series, 3.3
×
7 (mm)
Technical data and measuring conditions
Rated inductance L
R
B78108T, B78148T
Measured with LCR meter Agilent 4284A
or impedance analyzer Agilent 4294A
= 1 MHz
Measuring frequency:
L
R
≤
10
µH
10
µH
< L
R
≤
4700
µH
= 100 kHz
Measuring current:
≤
1 mA
Measuring temperature: 20 °C
Measured with precision impedance analyzer Agilent 4294A, 20 °C
40
°C
Maximum permissible DC current at rated temperature
≤
10% (referred to initial value) at I
R
, 20
°C
Measured at 20
°C
Sn95.5Ag3.8Cu0.7: (245
±5)
°C, (3
±0.3)
s
Wetting of soldering area
≥
90%
(to IEC 60068-2-20, test Ta)
(260
±5)
°C, 10 s (to IEC 60068-2-20, test Tb)
≥
20 N (to IEC 60068-2-21, test Ua)
55/125/56 (to IEC 60068-1)
Mounted: –55 °C … +125 °C
Packaged: –25 °C … +40 °C,
≤
75% RH
Approx. 0.25 g
Q factor Q
min
Rated temperature T
R
Rated current I
R
Inductance decrease
∆L/L
0
DC resistance R
max
Solderability (lead-free)
Resonance frequency f
res,min
Measured with Agilent 4294A or 8753ES, 20 °C
Resistance to soldering heat
Tensile strength of leads
Climatic category
Storage conditions
Weight
Mounting information
When bending the leads, take care that the start-of-winding areas at the face ends (protected by
glue and lacquer) are not subjected to any mechanical stress.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
03/08
RF chokes
MCC series, 3.3
×
7 (mm)
Characteristics and ordering codes
L
R
µH
Ceramic cylinder core
0.10
0.12
0.15
0.18
0.22
0.27
0.33
0.39
0.47
0.56
0.68
0.82
±10%
^
B78108T, B78148T
Tolerance
1)
Q
min
f
Q
MHz
I
R
mA
1120
1080
1020
1000
990
910
830
790
750
700
530
500
R
max
Ω
0.13
0.145
0.155
0.17
0.195
0.215
0.24
0.27
0.315
0.34
0.48
0.55
f
res,min
MHz
600
570
500
460
420
380
330
300
280
260
240
230
Ordering code
2)
(reel packing)
3)
K
40
40
38
35
35
35
35
35
35
35
35
35
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
B781
*
8T3101K000
B781
*
8T3121K000
B781
*
8T3151K000
B781
*
8T3181K000
B781
*
8T3221K000
B781
*
8T3271K000
B781
*
8T3331K000
B781
*
8T3391K000
B781
*
8T3471K000
B781
*
8T3561K000
B781
*
8T3681K000
B781
*
8T3821K000
1) Closer tolerances on request.
2) Replace the
*
by code number »0« for axial taping or by »4« for radial taping.
3) For Ammo pack the last digit has to be a »9«. Example: B78108T3101K009
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
03/08
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