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63

SPM2007 (11/07)

SMT POWER INDUCTORS

Flat Coils - PG0077NL and PG0084NL Series

Notes from Tables

1. The temperature of the component (ambient plus temperature rise) must

be within the standard operating temperature range.

2. Inductance at Irated is a typical inductance value for the component taken

at rated current.

3. The rated current listed is the lower of the saturation current @ 25°C or

the heating current.

inductance drops by 20% (typical) at an ambient temperature of 25°C.

This current is determined by placing the component in the specified

ambient environment and applying a short duration pulse current (to

eliminate self-heating effects) to the component.

component temperature by approximately 40°C. The heating current is

determined by mounting the component on a typical PCB and applying

current for 30 minutes. The temperature is measured by placing the ther-

mocouple on top of the unit under test. Take note that the component’s

performance varies depending on the system condition. It is suggested

that the component be tested at the system level, to verify the

temperature rise of the component during system operation.

6. Core loss approximation is based on published core data:

Where: Core Loss = in Watts

f = switching frequency in kHz

K1 & K2 = core loss factors

ΔΔI = delta I across the component in Ampere

K2

ΔΔI = one half of the peak to peak flux density

across the component in Gauss

8. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to

the part number (i.e. PG0077.401NL becomes PG0077.401NLT). Pulse

complies to industry standard tape and reel specification EIA481.

9. 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.

Inductance vs Current Characteristics

PG0077.202

PG0077.801

PG0077.401

PG0077.142

PG0077.282

BIAS CURRENT (A)

0

0.5

1.5

2.0

2.5

3.0

1.0

PG0077 Series

PG0084.651

PG0084.351

PG0084.112

BIAS CURRENT (A)

0

0.4

1.2

1.6

2.0

2.4

0.8

PG0084 Series

2.8