US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
Power Inductor
–
GA3252-AL
Document 636 -1
Document 636-1 Revised 12/16/11
Core material Ferrite
Terminations RoHS compliant tin-silver (96.5/3.5) over copper. Other
terminations available at additional cost.
Weight 11.6 g
Ambient temperature –40°C to +85°C with Irms current, +85°C to
+125°C with derated current
Storage temperature Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Mean Time Between Failures (MTBF) 26,315,789 hours
Packaging 200 per 13″ reel Plastic tape: 44 mm wide,
0.5 mm thick, 32 mm pocket spacing, 10.4 mm pocket depth
PCB washing Only pure water or alcohol recommended
Part Inductance2 DCR max3 SRF typ4
Isat (A)5 Irms (A)6
number1 ±20% (µH) (Ohms) (MHz) 10% drop 20% drop 30% drop 20°C rise 40°C rise
GA3252-AL_ 12.0 0.017 20 6.5 8.0 13 6.5 10
1. When ordering, specify termination and packaging codes:
GA3252-ALD
Termination: L = RoHS compliant tin-silver over copper.
Special order:
T = RoHS tin-silver-copper (95.5/4/0.5) or
S = non-RoHS tin-lead (63/37).
Packaging: D = 13″ machine-ready reel
EIA-481 embossed plastic tape (200 per full reel).
B = Less than full reel
In tape, but not machine ready. To have a leader and
trailer added ($25 charge), use code letter D instead.
2. Inductance tested at 100 kHz, 0.1 Vrms on Agilent/HP 4192A.
3. DCR measured on a Keithley 580 micro-ohmmeter or equivalent.
4. SRF measured on an Agilent/HP 8753ES network analyzer.
5. DC current at which the inductance drops the specified amount from its
value without current.
6. Current that causes the specified temperature rise from 25°C ambient.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Recommended
Land Pattern
0.940
23,88
0.413
10,50
0.820
20,83
0.820
20,83
0.940
23,88
0.079
2,00
0.700
17,78
max
max
max
0.005 / 0,13 mm
GA3252-AL
XXXX Y
Parts manufactured prior
to December 2011 may
be marked differently.
• High current surface mount toroidal power inductor
• Specified by National Semiconductor for 2 A to 14 A output
applications
For National Semiconductor
LM3433 LED Driver
Dimensions are in inches
mm
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
Power Inductor
–
GA3252-AL
Document 636-2
-40 -20 020406080100 140120
Ambient temperature (°C)
120
110
100
90
80
70
60
50
40
30
20
10
0
25°C
Percent of rated rmsI
Irms Derating
L vs Current L vs Frequency
1
10
100
1000
0.1 1
100
10
Current (A)
Inductance (µH)
1
10
100
1000
0.1 1
100
10
Frequency (MHz)
Inductance (µH)
Document 636-2 Revised 12/16/11
