COILCRAFT GA3382

Document 690-1
Power Inductor – GA3382-BL
For NSC LM25037
PWM Controller
• Designed for National Semiconductor LM25037 Dual Mode
PWM Controller. Shown as L3 on Application Note AN-1861.
• 500 Vrms primary to bias and primary to core isolation
• Bias winding provides 10 Vdc to the circuit
Core material Ferrite
Terminations RoHS compliant tin-silver over copper. Other
terminations available at additional cost.
Weight 9.5 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 +125°C.
Packaging: –55°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 175/13″ reel Plastic tape: 44 mm wide, 0.4 mm thick,
32 mm pocket spacing, 11.5 mm pocket depth
PCB washing Only pure water or alcohol recommended
Part
number1
GA3382-BL_
Inductance2
±10% (µH)
4.0
DCR max (Ohm)3
pri
bias
0.0095
0.36
SRF typ
(MHz)
30
Isat (A)4
10% drop 20% drop 30% drop
16.0
17.0
1. When ordering, please specify termination and packaging codes:
GA3382-BLD
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.
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 measured at 250 kHz, 0.4 Vrms.
3. DCR for the primary is with the windings connected on parallel.
4. DC current at which inductance drops the specified amount from its value without current.
5. Current that causes the specified temperature rise from 25°C ambient.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Irms (A)5
20°C rise
40°C rise
18.0
6.5
8.5
1
2
3
4
7
8
9
10
5
Bias
6
Primary windings to be connected
in parallel on the PC board
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2008
Document 690-1
Revised 09/05/08
Document 690-2
Power Inductor – GA3382-BL
Inductance vs Current
Inductance vs Frequency
100
Inductance (µH)
Inductance (µH)
100
10
1
0.1
10
0
0.1
0.1
10
1
100
0.1
100
Frequency (MHz)
1
120
110
0.910
max
23,11
100
90
5
80
10
GA3382-AL
CCI xxxx
Irms Derating
6
70
60
0.395
max
20,03
50
40
25°C
Percent of rated Irms
10
1
Current (A)
30
0.004 / 0,10
0.791
20,10
1.020
max
25,90
20
10
0
-40
-20
0
20
40
60
80
Ambient temperature (°C)
100
120 140
6
0.148
3,76
5
0.039
1,00
1
10
1.040
26,42
0.148
3,76
Recommended
Land Pattern
0.060
1,52
1
inches
Dimensions are in
mm
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2008
0.090
2,29
Document 690-2
Revised 09/05/08