PE-0805FT683JTT PULSE ELECTRONICS CORPORATION, PE-0805FT683JTT Datasheet - Page 28

• Manufacturer Part Number: PE-0805FT683JTT
• Description: INDUCTOR WW 68UH 2.52MHZ 0805
• Manufacturer: PULSE ELECTRONICS CORPORATION
• Series: 0805FTr
• Type: Ferrite Corer

Specifications of PE-0805FT683JTT

• Inductance: 68µH
• Current: 49mA
• Tolerance: ±5%
• Dc Resistance (dcr): 17.5 Ohm Max
• Q @ Freq: 8 @ 2.52MHz
• Self Resonant Freq: 11MHz
• Package / Case: 0805 (2012 Metric)
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 125°C
• Frequency - Test: 2.52MHz
• Material - Core: Ferrite
• Applications: General Purpose
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Shielding: -
• Current - Saturation: -
• Current - Temperature Rise: -

WIRE-WOUND
RF CHIP INDUCTORS
Application Notes
www.pulseeng.com
The Inductor Basics
The effect of Cd can have a dramatic effect upon the impedance of the inductor as illustrated in Fig 2.0, because
"fringe" effects become dominant at high frequencies. At low frequencies the inductor's reactance parallels that of an
ideal inductor. With increasing frequency the reactance of the inductor departs from the ideal curve and increases at a
much faster rate until it reaches a peak value at the inductor's parallel resonant frequency (Fr). Above Fr the inductor's
reactance begins to decrease with increasing frequency and thus the inductor begins to look like a capacitor. The
series resistance (Rs) of the coil prevents the impedance of the inductor from reaching infinity at resonance (Fr).
Another effect of Rs is to broaden the resonant peak of the impedance curve at Fr.
Comparisons made between inductors at near to Fr will produce an inaccurate representation of the inductor's perfor-
mance. This can lead to problems in the end application since the performance of one inductor to another may vary
quite markedly since the performance of the inductor is dominated by the parasitic content (distributed capacitance Cd)
of the inductor.
USA 858 674 8100
• •
Germany 49 7032 7806 0
Fig. 2.0 Impedance and Inductance Characteristic of a Real World Inductor
(continued)
• •
Singapore 65 6287 8998
26
• •
Shanghai 86 21 62787060
• •
China 86 755 33966678
• •
Taiwan 886 3 4356768
WC701.L (4/10)