VP4-0140-R Cooper/Bussmann, VP4-0140-R Datasheet - Page 6

• Manufacturer Part Number: VP4-0140-R
• Description: Power Inductors 11.3uH 0.95A 0.057ohms
• Manufacturer: Cooper/Bussmann
• Series: VP4r
• Type: General Purposer

Specifications of VP4-0140-R

• Core Material: Ferrite
• Product: Inductors
• Inductance: 11.3 uH
• Tolerance: 20 %
• Maximum Dc Current: 0.95 Amp
• Maximum Dc Resistance: 0.057 Ohms
• Dimensions: 18 mm W x 18 mm L x 10 mm H
• Operating Temperature Range: - 40 C to + 85 C
• Termination Style: SMD/SMT
• Impedance: Not RequiredOhm
• Tolerance (+ Or -): 20%
• Dc Resistance: 57mOhm
• Operating Temp Range: -40C to 85C
• Product Diameter (mm): Not Requiredmm
• Product Height (mm): 10mm
• Product Length (mm): 18mm
• Military Standard: Not Required
• Failure Rate: Not Required
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Discrete inductors combine like resistors, when connected in series or parallel. For example, inductors in series add and
inductors in parallel reduce in a way similar to Ohm’s Law.
Windings on the same magnetic core behave differently. Two windings in series result in four times the inductance of a
single winding. This is because the inductance varies proportionately to the square of the turns.
Paralleled VERSA-PAC windings result in no change to the net inductance because the total number of turns remains
unchanged; only the effective wire size becomes larger. Two parallel windings result in approximately twice the current
carrying capability of a single winding. The net inductance of a given PCM configuration is based on the number of
windings in series squared multiplied by the inductance of a single winding (L
is derived by multiplying the maximum current rating of one winding (I
of simple two-winding devices are shown below:
L
Where:
L
I
TOTAL
BASE
BASE
P = Number of windings in parallel (use 1 with all windings in series)
S = Number of windings in series
= L
= 10 µH x 2
= 40 µH
= Inductance of a single winding
= Maximum current rating of one winding
BASE
HOW TO USE MULTIPLE WINDINGS
x S
Series Connected (2 Windings)
2
2
I
1 Amp
1 Amp
MAX
10µH
10µH
L
Parallel
= I
= 1 Amp x 1
= 1 Amp
= 1/
L
BASE
Series
[
x P
1/L1 + 1/ L2 + 1/ L3....1/Ln
= L1 + L2 + L3...Ln
L
TOTAL
BASE
= L
= 10 µH x 1
= 10 µH
Parallel Connected (2 Windings)
) by the number of windings in parallel. Examples
1 Amp
10µH
BASE
BASE
). The current rating of a PCM configuration
x S
Inductors and Transformers
2
]
2
1 Amp
10µH
I
MAX
= I
= 1 Amp x 2
= 2 Amps
BASE
(Surface Mount)
VERSA-PAC
x P
®