GA3459-BL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformers

Document 722
Flyback Transformers ForLinearTechnologyLT3751
Capacitor Charger Controller
• Flyback transformer for the Linear Technology LT3751
Capacitor Charger Controller
• For charging capacitors to 500 V
• GA3459-BL: 5 – 24 V input
GA3460-BL: 12 – 24 V input
• 1500 Vrms isolation from primary to secondary windings
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 24.2 – 27.5 g
Ambient temperature –40°C to +125°C
Storage temperature Component: –40°C to +125°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 24 per tray
PCB washing Only pure water or alcohol recommended
Part
number
GA3459-BL
GA3460-BL
Inductance
at 0 A¹
±10% (µH)
5.0
2.5
Inductance
at Ipk²
min (µH)
4.25
2.25
DCR max (mOhms)³
pri
sec
7.70
515
5.63
400
Leakage
inductance⁴
max (µH)
0.10
0.06
Turns ratio⁵
Ipk²
pri : sec
(A)
1 : 10
20
1 : 10
50
1. Inductance is measured at 50 kHz, 0.1 Vrms.
2. Peak primary current drawn at minimum input voltage.
3. DCR for the primary is with the windings connected in parallel.
4. Leakage inductance is for one winding of the primary with the secondary
winding shorted.
5. Turns ratios are with the primary windings connected in parallel.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
1
0.039
1,00
0.157
4,00
Dot indicates pin 1
12
0.108
2,75
1
1.10
28,2
12
1.024
26,0
1.053max _0.157
26,75
4,00
0.079
2,00
Recommended
Land Pattern
0.551max
14,0
1.173
29,80
1.285 _max
32,65
0.004 / 0,10
Dimensions are in
inches
mm
GA3459-BL
1
2
3
4
6
Pri
Sec
9
7
10
11
12
GA3460-BL
1
2
3
4
6
Pri
Sec
12
7
11
10
9
Primary windings to be connected
in parallel on PC board.
Specifications subject to change without notice.
Please check our website for latest information.
Document 722 Revised 05/21/09
© Coilcraft, Inc. 2009