Applications
• Cellular phones, Digital cameras, CD players, PDAs
• Small LCD displays
• LED driver and LED flash circuits
• Hard disk drives
• Backlighting
• EL panel
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating temperature range: -40°C to +125°C
(with derated current)
• Solder reflow temperature: +260°C max. for 10 seconds maximum
Packaging
• Supplied in tape and reel packaging, 4100 per reel,
13” diameter reel
Description
• 125°C maximum total temperature operation
• 3.2mm x 3.2mm x 1.8mm maximum shielded drum core
• Ferrite core material
• Inductance range from 1.0μH to 1000μH
• Current range from 2.94 Amps to 0.083 Amps
• Frequency range up to 4MHz
• RoHS compliant
Low Profile Power Inductors
SD3118 Series
1109 BU-SB091064 Page 1 of 3 Data Sheet: 4084
SMD Device
1 Open Circuit Inductance (OCL) Test Parameters: 100kHz, 0.10V
rms
, 0.0Adc
2I
rms
: DC current for an approximate temperature rise of 40°C without core loss. Derating is
necessary for AC currents. PCB pad layout, trace thickness and width, air-flow and proximity of
other heat generating components will affect the temperature rise. It is recommended the part
temperature not exceed 125°C under worst case operating conditions verified in the end
application.
3I
sat
: Peak current for approximately 30% rolloff at +20°C.
4 K-factor: Used to determine B
p-p
for core loss (see graph). B
p-p
= K
*
L
*
ΔI. B
p-p
(mT),
K: (K-factor from table), L: (inductance in μH), ΔI (peak-to-peak ripple current in amps).
5 Part Number Definition:HCF1007-xxx-R
• SD3118 = Product code and size
• xxx= Inductance value in μH, R = decimal point.
If no “R” is present then third character =# of zeros
• -R suffix = RoHS compliant
Product Specifications
Part Rated OCL
1
Part Marking I
rms
2
I
sat
3
DCR (Ω) @ 20°C
Number
5
Inductance (μH) (μH) Designator (Amps) (Amps) (Typical) K-factor
4
SD3118-1R0-R 1.0 1.04±30% A 2.01 3.07 0.041 84
SD3118-1R5-R 1.5 1.44±30% B 1.81 2.42 0.051 68
SD3118-2R2-R 2.2 2.12±30% C 1.50 2.00 0.074 57
SD3118-3R3-R 3.3 3.36±30% D 1.22 1.59 0.113 56
SD3118-4R7-R 4.7 4.90±30% E 1.02 1.31 0.162 39
SD3118-6R8-R 6.8 6.72±30% F 0.85 1.12 0.232 32
SD3118-8R2-R 8.2 8.10±30% G 0.81 1.02 0.257 29
SD3118-100-R 10.0 10.4±30% H 0.75 0.90 0.295 26
SD3118-150-R 15.0 14.9±20% I 0.62 0.75 0.440 21
SD3118-220-R 22.0 22.5±20% J 0.50 0.61 0.676 18
SD3118-330-R 33.0 33.1±20% K 0.41 0.51 0.986 14
SD3118-470-R 47.0 47.5±20% L 0.370 0.42 1.21 12
SD3118-221-R 220.0 221.9±20% M 0.182 0.177 4.77 6
SD3118-331-R 330.0 329.9±20% N 0.146 0.145 7.40 5
SD3118-471-R 470.0 470.1±20% O 0.131 0.122 9.20 4
SD3118-681-R 680.0 680.3±20% P 0.107 0.101 13.70 3
SD3118-102-R 1000.0 999.4±20% Q 0.087 0.083 20.90 3
