B78108S1472K EPCOS Inc, B78108S1472K Datasheet - Page 4

• Manufacturer Part Number: B78108S1472K
• Description: CHOKE RF 4.7UH 820MA AXIAL
• Manufacturer: EPCOS Inc
• Series: BCr
• Type: Ferrite Corer

Specifications of B78108S1472K

• Inductance: 4.7µH
• Tolerance: ±10%
• Current: 820mA
• Dc Resistance (dcr): 340 mOhm Max
• Q @ Freq: 60 @ 7.96MHz
• Self Resonant Freq: 95MHz
• Package / Case: Axial
• Mounting Type: Through Hole
• Frequency - Test: 7.96MHz
• Material - Core: Ferrite Drum
• Applications: General Purpose
• Maximum Dc Current: 820 mAmps
• Maximum Dc Resistance: 0.34 Ohms
• Self Resonant Frequency: 95 MHz
• Q Minimum: 60
• Termination Style: Axial
• Inductance Tolerance: ± 10%
• Dc Resistance Max: 0.34ohm
• Dc Current Rating: 820mA
• 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: B78108S1472K000

Technical data and measuring conditions
Rated inductance L
Q factor Q
Rated temperature T
Rated current I
Inductance decrease L/L
DC resistance R
Resonance frequency f
Solderability (lead-free)
Resistance to soldering heat (260 5) °C, 10 s (to IEC 60068-2-20, test Tb)
Tensile strength of leads
Climatic category
Storage conditions
Weight
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.
RF chokes
BC series, 4 9.2 (mm)
Mounting information
min
R
max
R
R
res,min
0
Measured with LCR meter Agilent 4284A
or impedance analyzer Agilent 4294A
Measuring frequency:
Measuring current:
Measuring temperature: 20 °C
Measured with precision impedance analyzer Agilent 4294A, 20 °C
40 C
Maximum permissible DC current at rated temperature
Measured at 20 C
Measured with Agilent 4294A or 8753ES, 20 °C
Sn95.5Ag3.8Cu0.7: (245 5) °C, (3 0.3) s
Wetting of soldering area
(to IEC 60068-2-20, test Ta)
55/125/56 (to IEC 60068-1)
Mounted: –55 °C … +125 °C
Packaged: –25 °C … +40 °C,
Approx. 0.38 g
10% (referred to initial value) at I
20 N (to IEC 60068-2-21, test Ua)
4
03/08
L
10 H < L
R
1 mA
90%
10 H
75% RH
R
R
, 20 C
4700 H = 100 kHz
B78108S, B78148S
=
1 MHz