GA3429 Coilcraft, Inc., GA3429 Datasheet
![no-image](/images/no-image-200.jpg)
GA3429
Manufacturer Part Number
GA3429
Description
Flyback Transformers
Manufacturer
Coilcraft, Inc.
Datasheet
1.GA3429.pdf
(1 pages)
GA3429-BL_
GA3430-BL_
GA3431-BL_
1. When ordering, please specify packaging code:
2. Inductance is for the primary, measured at 250 kHz, 0.3 Vrms, 0 Adc.
3. Ipk is peak primary current drawn at minimum input voltage.
4. DCR for the secondary is per winding.
5. Leakage inductance measured between pins 3 and 4 with all secondary
6. Turns ratio is with the secondary windings connected in parallel.
7. Output is with the secondary windings connected in parallel. Bias winding
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
© Coilcraft, Inc. 2010
number
Packaging: D = 13 machine-ready reel. EIA-481 embossed plastic
pins shorted.
output: 3.3 V, 20 mA (GA3429 and GA3431); 5.0 V, 20 mA (GA3430).
Part
1
B = Less than full reel. In tape, but not machine ready. To
Flyback Transformers
Inductance
±10% (µH)
Secondary windings to be
connected in parallel on PC board
tape (250 parts per full reel).
have a leader and trailer added ($25 charge), use
code letter D instead.
at 0 A
24.0
25.0
25.0
3
Pri
4
2
Bias
1
GA3431-BLD
2
Inductance
min (µH)
at Ipk
21.6
22.5
22.5
3
Sec
6
5
7
8
pri
95
90
90
DCR max (mOhms)
Specifications subject to change without notice.
Please check our website for latest information.
15
sec
5.0
7.5
bias
123
95
70
4
• Designed for the LT3573 Isolated Flyback Converter
• 1500 Vrms isolation from primary and bias to secondary;
• The bias winding provides power to the chipset
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 3.9 to 4.1 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
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)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 250 per 13 reel Plastic tape: 32 mm wide,
0.5 mm thick, 20 mm pocket spacing, 11.2 mm pocket depth
PCB washing Only pure water or alcohol recommended
Dimensions are in
0.50
12,7
0.450
11,43
0.041
1,05
inductance
500 Vrms isolation from primary to bias, tested for one minute
max (µH)
Leakage
max
0.566
0.685
0.945
max
1
4
0.600
15,24
5
0.413
10,50
Dot above pin1
inches
pri : sec : bias
mm
max
Turns ratio
4 : 1 : 1
5 : 1 : 1
7 : 1 : 1
8
5
For Linear Technology LT3573
Isolated Flyback Converter
0.024
0.098
0,60
2,50
6
0.004 /0,10
Document 733 Revised 04/13/09
0.080
Ipk
(A)
2,03
2.1
2.1
2.1
3
1
voltage
20 – 28
10 – 14
10 – 14
Input
Recommended
(V)
Land Pattern
Document 733
0.460
11,68
3.3 V, 1.5 A
5.0 V, 1.0 A
3.3 V, 1.5 A
Output
0.050
0.098
1,27
2,50
7