6

11/05

RF chokes

BC series

B78108S

B78148S

Please read the Important notes at the end of

this document.

General technical data

Measuring frequency: L

≤ 10 μH=

1 MHz

10

μH < L ≤ 4700 μH = 100 kHz

L > 4700

μH

= 10 kHz

Measuring current:

≤ 1 mA

Distance between

measuring clamps:

25.4 mm

Measured with HP 4342A

Maximum permissible DC current

referred to 40

°C ambient temperature,

for derating see below

Inductance decrease

ΔL/L

0

≤10% (referred to initial value) at I

R

at 20

°C ambient temperature

Measured at 20

°C ambient temperature,

distance between measuring clamps: 25.4 mm

Measured with Scalar Network Analyzer ZAS

from Rohde & Schwarz

Climatic category

55/125/56 (–55

°C/+125 °C/56 days damp heat test)

to IEC 60068-1

Solderability

235

°C, 2 s, ≥90% wetting

to IEC 60068-2–20, test Ta

Resistance to soldering heat

To IEC 60068-2-20, test Tb 260

°C, 10 s

Tensile strength of leads

To IEC 60068-2-21, test Ua

≥20 N

RoHS-compatible

RoHS-compatible is defined as compatible with the follow-

ing documents:

DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIA-

MENT AND OF THE COUNCIL of 13 February 2003 on the

restriction of the use of certain hazardous substances in

electrical and electronic equipment COM (2004) 606 final

Proposal for a COUNCIL DECISION amending Directive

2002/95/EC of the European Parliament and of the Council

for the purposes of establishing the maximum concentra-

tion values for certain hazardous substances in electrical

and electronic equipment.

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.