www.pulseeng.com

70

SPM2007 (11/07)

SMT POWER INDUCTORS

Wirewound - PD0120NL Series

0.0

10.00

20.0

30.0

40.0

50.0

60.0

0

5

10

15

20

25

30

35

40

PD0120.503

PD0120.373

PD0120.223

PD0120.183

PD0120.113

PD0120.702

PD0120.532

PD120.332

PD0120.222

PD0120.152

PD0120.102

Notes from Tables

1. The rated current as listed is either the saturation current or the

heating current depending on which value is lower.

2. The saturation current is the current which causes the

inductance to drop by 10% at the stated ambient temperatures

(-40°C, 25°C and 125°C). This current is determined by placing

the component in the specified ambient environment and apply-

ing a short duration pulse current (to eliminate self-heating

effects) to the component.

3. The heating current is the DC current which causes the

temperature of the part to increase by approximately 45°C. This

current is determined by mounting the component on a PCB

with .25" wide, 3 oz. equivalent copper traces, and applying the

current to the device for 30 minutes with no forced air cooling.

4. In high volt*time applications, additional heating in the

component can occur due to losses in the inductor which may

neccessitate derating the current in order to limit the

temperature rise of the component. In order to determine

the approximate total losses (or temperature rise) for a given

application both copper losses and core losses should be taken

into account.

5. Optional Tape & Reel packaging can be ordered by adding a

"T" suffix to the part number (i.e. PD0120.102 becomes

PD0120.102T). Pulse complies to industry standard tape and

reel specification EIA481.

Estimated Temperature Rise:

7.05

Coreloss = 1.86E-12 *

Ω) (mW)

12

Freq (kHz) = switching frequency (kHz)

Vµsec = L (µH) * dI or V * D * 1000/Freq (kHz)

dI = pk – pk ripple current across the component (A)

V = Voltage across the component (V)

D = Duty cycle

6. The "NL" suffix indicates an RoHS-compliant part number. Non-

NL suffixed parts are not necessarily RoHS compliant, but are

electrically and mechanically equivalent to NL versions. If a part

number does not have the "NL" suffix, but an RoHS compliant

version is required, please contact Pulse for availability.

7. The temperature of the component (ambient plus temperature

rise) must be within the stated operating temperature range.

Inductance vs Current Characteristics