GA3252-AL

Document 636 -1
Power Inductor – GA3252-AL
For National Semiconductor
LM3433 LED Driver
• High current surface mount toroidal power inductor
•Specified by National Semiconductor for 2 A to 14 A output
applications
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
5
Irms (A)6
Inductance2
DCR max3
SRF typ4Isat (A) Part number1
±20% (µH)
(Ohms)
(MHz)
10% drop 20% drop 30% drop
20°C rise 40°C rise
GA3252-AL_
12.0 0.017
206.5
8.0
136.5
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.
0.079
2,00
GA3252-AL
0.940
max
23,88
0.700
17,78
XXXXY
0.820
20,83
0.940
max
23,88
Parts manufactured prior
to December 2011 may
be marked differently.
Recommended
Land Pattern
0.413
max
10,50
0.820
20,83
Dimensions are in
0.005 / 0,13 mm
inches
mm
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 636-1 Revised 12/16/11
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 636-2
Power Inductor – GA3252-AL
L vs Current
L vs Frequency
100
100
Inductance (µH)
1000
Inductance (µH)
1000
10
1
0.1
10
1
100
10
1
0.1
Current (A)
1
10
100
Frequency (MHz)
Irms Derating
120
110
90
80
70
60
50
40
25°C
Percent of rated Irms
100
30
20
10
0
-40
-20
0
20
40
60
80
100
120 140
Ambient temperature (°C)
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 636-2 Revised 12/16/11
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.