GA3502-BL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 708
Flyback Transformer ForMaximOff-Line
LED Driver
• Designed for PWM Dimming of High-Brightness LEDs
• Bias winding output: 18 V, 20 mA
• 400 V input; 110 V, 0.4 A output
• 1500 Vrms primary and bias to secondary isolation
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 21.3 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 parts per tray
PCB washing Only pure water or alcohol recommended
Part
number
GA3502-BL
Inductance
at 0 Adc¹
±10% (µH)
800
Inductance
at Ipk²
min (µH)
DCR max
(Ohms)
Leakage
Inductance³
max (µH)
720
1.283 (pins 1 – 3)
6.60
0.146 (pins 5 – 6)
0.361 (pins 12 – 7)
Turns ratio
pri : sec pri : bias
1 : 0.035 1 : 0.06
Ipk²
(A)
Output⁴
0.75 110 V, 0.4 A
1. Inductance is for the primary (pins 1 – 3), measured at 250 kHz, 0.3 Vrms.
2. Peak primary current drawn at minimum input voltage.
3. Leakage inductance is for the primary winding (pins 1 – 3) with the secondary
winding shorted.
4. Output is for the secondary. Bias winding output is 18 V, 20 mA.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
1
Pri 2
12
0.108
1.10
Sec
2,75
28,0
7
1
0.004 / 0,10 mm
0.079
2,0
12
6
Dot indicates pin 1
1.169
29,7
1.285
32,65
max
1.024
26,0
0.551
14,0
max
0.043
1,1
7
3
5
Bias
6
Recommended
Land Pattern
6
Dimensions are in
inches
mm
7 ^0.157
4,0
1.053
26,75
max
1
0.657
16,7
12 _0.157
4,0
© Coilcraft, Inc. 2009
These parts are preproduction products for electrical evaluation only.
Specification subject to change without notice.
Document 708 Revised 10/28/08