© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Flyback Transformers
Document 374
Document 374
Revised 12/09/09
Leakage
Output
Output
Output
Isolation
Part
Inductance2
DCR max
inductance3
Turns ratio
power
voltage
current
voltage4
number1
±10% (mH)
(Ohms)
max (µH)
pri : sec : aux
(W)
(V)
(A)
(Vrms)
A9619-CL
3.2
1.74 (pri)
60
1 : 0.10 : 0.14
6
12
0.58
2000
0.040 (sec)
0.278 (aux)
B0570-BL
3.4
2.57 (pri)
95
1 : 0.06 : 0.08
12
12
1.25
3000
0.038 (sec)
0.285 (aux)
0.950
24,13
0.150 ±0.030
3,81 ±0,76
5
1
6
10
Bottom view
Recommended
PC Board Layout
1
0.200
5,08
0.150
3,81
0.620
15,75
0.620
15,75
dia
0.044
1,12
(7 places)
1.100
27,94
max
1.100
27,94
max
max
For ON Semiconductor
NCP101X
6
9
10
7
1
5
Auxiliary
Primary
Secondary
• Developed for the ON Semiconductor NCP101X Self-Sup-
plied Monolithic Switcher
• A9619-CL provides 7 Watts output for 120 Vac applications
B0570-BL provides 15 Watts for 230 Vac applications
Coilcraft can also custom engineer a transformer to
meet your specific requirements. For free evaluation
samples, contact Coilcraft or visit www.coilcraft.com.
1. When ordering, please specify termination code:
B0570-B
L
Termination: L = RoHS compliant tin-silver over tin over nickel over
phos bronze. Special order:
T = RoHS tin-silver-copper (95.5/4/0.5) or
S = non-RoHS tin-lead (63/37).
2. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance tested at 100 kHz, 0.1 Vrms
4. Isolation tested between primary and secondary and between
primary and auxiliary windings.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Core material Ferrite
Terminations RoHS tin-silver over tin over copper. Other termina-
tions available at additional cost.
Weight 15.8 – 16.3 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 81 parts per tray
PCB washing Only pure water or alcohol recommended
Dimensions are in
inches
mm
