PE-0402CD120KTG PULSE ELECTRONICS CORPORATION, PE-0402CD120KTG Datasheet - Page 28

• Manufacturer Part Number: PE-0402CD120KTG
• Description: INDUCTOR WW 12NH 250MHZ 0402
• Manufacturer: PULSE ELECTRONICS CORPORATION
• Series: 0402CDr
• Type: Ceramic Core, Wirewoundr

Specifications of PE-0402CD120KTG

• Inductance: 12nH
• Current: 640mA
• Tolerance: ±10%
• Dc Resistance (dcr): 120 mOhm Max
• Q @ Freq: 26 @ 250MHz
• Self Resonant Freq: 3.6GHz
• Package / Case: 0402 (1005 Metric)
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 125°C
• Frequency - Test: 250MHz
• Material - Core: Ceramic
• Applications: General Purpose
• Maximum Dc Current: 640 mAmps
• Maximum Dc Resistance: 0.12 Ohms
• Self Resonant Frequency: 3600 MHz
• Q Minimum: 26
• Termination Style: SMD/SMT
• Dimensions: 0.66 mm W x 1.19 mm L x 0.610 mm H
• Shielding: Unshielded
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Shielding: -
• Current - Saturation: -
• Current - Temperature Rise: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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)