B78108S1223K EPCOS Inc, B78108S1223K Datasheet - Page 18

• Manufacturer Part Number: B78108S1223K
• Description: CHOKE RF 22UH 560MA AXIAL
• Manufacturer: EPCOS Inc
• Series: BCr
• Type: Ferrite Corer

Specifications of B78108S1223K

• Inductance: 22µH
• Tolerance: ±10%
• Current: 560mA
• Dc Resistance (dcr): 740 mOhm Max
• Q @ Freq: 55 @ 2.52MHz
• Self Resonant Freq: 13MHz
• Package / Case: Axial
• Mounting Type: Through Hole
• Frequency - Test: 2.52MHz
• Material - Core: Ferrite Drum
• Applications: General Purpose
• Maximum Dc Current: 560 mAmps
• Maximum Dc Resistance: 0.74 Ohms
• Self Resonant Frequency: 13 MHz
• Q Minimum: 55
• Termination Style: Axial
• Inductance Tolerance: ± 10%
• Dc Resistance Max: 0.74ohm
• Dc Current Rating: 560mA
• Q Test Frequency: 2.52MHz
• Inductor Case Style: Axial Leaded
• No. Of Pins: 2
• Svhc: No SVHC (18-Jun-2010)
• Rohs Compliant: Yes
• Q Factor: 55
• 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: B78108S1223K000

Multilayer winding:
The winding pitch is equal to the wire diameter. The coil is wound with several layers. This leads to
parasitic capacitances between the layers in addition to the turn-to-turn capacitances. In compari-
son to all other types of winding, this type leads to the highest capacitances and thus the lowest
resonance frequencies.
Random winding:
The winding pitch is smaller than the wire diameter. The coil is wound in one direction only. This
method of winding a coil does not permit the final position of a turn to be predetermined exactly. The
cross section of this type of winding clearly shows a disorderly, “random” arrangement of the turns.
This leads to the parasitic capacitances being only minimally greater than those achieved by single-
layer winding, and the resonance frequencies are equal to those achieved by single-layer winding.
General Technical Information
1
1
1
1
19 18 17 16 15 14 13 12
19 18 17 16 15 14 13 12
2 3 5 6 8 10 11 13 14
2 3 5 6 8 10 11 13 14
2 3 4 5 6 7 8 9 10
2 3 4 5 6 7 8 9 10
4
4
7 9
7 9
12
12
11
11
16 18
16
15 17 19
15 17 19
14
18
26
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