B78108S1222K EPCOS Inc, B78108S1222K Datasheet - Page 7

• Manufacturer Part Number: B78108S1222K
• Description: CHOKE RF 2.2UH 1.0A AXIAL
• Manufacturer: EPCOS Inc
• Series: BCr
• Type: Ferrite Corer

Specifications of B78108S1222K

• Inductance: 2.2µH
• Tolerance: ±10%
• Current: 1A
• Dc Resistance (dcr): 250 mOhm Max
• Q @ Freq: 55 @ 7.96MHz
• Self Resonant Freq: 140MHz
• Package / Case: Axial
• Mounting Type: Through Hole
• Frequency - Test: 7.96MHz
• Material - Core: Ferrite Drum
• Applications: General Purpose
• Maximum Dc Current: 1000 mAmps
• Maximum Dc Resistance: 0.25 Ohms
• Self Resonant Frequency: 140 MHz
• Q Minimum: 55
• Termination Style: Axial
• Inductance Tolerance: ± 10%
• Dc Resistance Max: 0.25ohm
• Dc Current Rating: 1A
• Q Test Frequency: 7.96MHz
• Inductor Case Style: Axial Leaded
• No. Of Pins: 2
• Svhc: No SVHC (18-Jun-2010)
• Rohs Compliant: Yes
• Body Diameter: 4mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Shielding: -
• Current - Saturation: -
• Current - Temperature Rise: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: B78108S1222K000

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Impedance |Z| versus frequency f
measured with impedance analyzer Agilent
4294A or S-parameter network analyzer
Agilent 8753ES, typical values at 20 °C
Q factor versus frequency f
measured with impedance analyzer
Agilent 4294A, typical values at 20 °C
Z
Q
RF chokes
BC series, 4 9.2 (mm)
10
10
10
10
10
10
10
150
100
50
6
5
4
3
2
1
0
0
10
10
1000 µH
4700 µH
B781*8S
4
100 µH
10 µH
1 µH
10
10
6
5
10
10
7
6
1000 µH
4700 µH
100 µH
10 µH
1 µH
10
10
B781*8S
8
7
IND0122-K
IND0124-C
f
Hz
Hz
f
10
10
9
8
7
Inductance L versus DC load current I
measured with LCR meter Agilent 4284A,
typical values at 20 °C
Current derating I
versus ambient temperature T
(rated temperature T
I
I
L
op
R
03/08
10
µH
10
10
10
10
10
1.0
1.2
0.8
0.6
0.4
0.2
_
1
0
4
3
2
1
0
10
0
_
2
20
1000 µH
100 µH
10 µH
1 µH
40
10
op
4700 µH
_
R
1
/I
60
R
= 40 C)
B78108S, B78148S
80
10
100
A
0
B781*8S
IND0552-S-E
IND0123-X
˚
C
A
T
I
DC
A
DC
140
10
1