Document 145
Power Factor Controller Transformers
These parts are designed for use with Motorola MC33261
and MC34261 power factor controllers. They are specifi-
cally intended for use in AC-DC pre-converter circuits for
electronic ballast and off-line switching power converter
applications.
N2880-AL and N2881-AL utilize standard materials for
lowest cost. Coilcraft can also supply custom transform-
ers optimized for specific combinations of output power
and input voltage.
N2880-AL
N2881-AL
For output power up to 80 Watts
For 110 V input voltage
For output power up to 175 Watts
For “universal” 110/220 V input voltage
Inductance1:
DC resistance:
Pins 1-5
Pins 1-5
Pins 10-6
350/290 µH
0.170 max
0.019 max
Inductance1:
DC resistance:
Pins 2-5
Pins 2-5
960/780 µH
0.100 max
Pins 12-7 0.017 max
Isolation:
500 Vrms between windings
Isolation:
500 Vrms between windings
1. Tested at 15.75 kHz, 1 Vrms.
1.Tested at 15.75 kHz, 0.2 Vrms.
2. Ambient temperature: –40°C to +85°C.
3. Electrical specifications at 25°C.
2. Ambient temperature: –40°C to +85°C.
3. Electrical specifications at 25°C.
1.90
max
1.10
max
27,9
48,3
ꢀ
7
5
ꢀ
1.ꢀ0
max
1.90
48,3
1.10
27,9
0.950
max
max
max
40,ꢀ
24,1
1
1
10
12
0.051
1,295
0.032
1,12
0.150 0.030
3,81 0,7ꢀ
dia (12×)
dia (10×)
0.150 0.030
3,81 0,7ꢀ
0.300
7,ꢀ2
0.ꢀ20
15,75
1.300
33,02
(9×)
0.200
5,08
0.200
(1×)
5,08
1
0.150
(1×)
(7×)
12
10
3,81
1
5
2
5
12
7
1
5
10
ꢀ
ꢀ
ꢀ
7
12.4:1
13:1
0.044
1,12
dia(10×)
0.0ꢀ3
1,ꢀ0
dia (12×)
Recommended
Board Layout
Recommended
Board Layout
Weight:
176 g
Weight:
22.2 g
Terminations: Tin-silver over tin over copper
Terminations: Tin-silver over tin over copper
Packaging:
36 per tray
Packaging:
30 per tray
Document 145 Revised 01/06/09
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© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.