WE-OLTI Offline Flyback Transformers
SizeDimen­sions3DL
(mm)
W
(mm)
H
(mm)
Mount
EE13/7/4
13.72 20.45 10.54 THT
EE16/7/5
17.5 - - THT
EE16/8/5
- - - THT
EE20/10/6
- - - THT
EE25/13/7
27.05 32.25 22.86 THT
EFD20
21.5 29 12.45 THT
EFD25
26.3 33 14.76 THT
EP13
- - - THT
ERL35
36.5 44 28.5 THT
ER28/14
- - - THT
ER28/17
32 39 36 THT
ETD29
35.56 24.38 44.2 THT
ETD39
49 41.9 31.75 THT
PQ2625
1.15 30.35 29.3 THT

Characteristics

  • Nominal input voltage: 85–265 VAC (120–375 VDC)
  • Small size
  • Low leakage inductance
  • Multiple-output options
  • Operating temperature: −40 °C to +125 °C
  • Isolation Voltage: 2 kVAC to 5 kVAC
  • Options for fixed frequency or quasi-resonant mode operation
  • Most products meet reinforced insulation

Applications

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Products

All
EE13/7/4
EE16/7/5
EE16/8/5
EE20/10/6
EE25/13/7
EFD20
EFD25
EP13
ERL35
ER28/14
ER28/17
ETD29
ETD39
PQ2625
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Order Code
Data­sheet
Simu­lation
Downloads
Status
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
VOut3(V)
IOut3(mA)
Vaux(V)
Vaux 2(V)
L(µH)
fswitch(kHz)
NPRI : NSEC : NAUX
ISAT(A)
VT(V (AC))
Size
Mount
L(mm)
W(mm)
H(mm)
Samples
WE-OLTI Offline Flyback Transformers
750342851
43 - 318 V (AC), 24 V, 1000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 43 - 318 V (AC)
Output Voltage 124 V
Output Current 11000 mA
Output Voltage 215 V
Output Current 265 mA
Output Voltage 315 V
Output Current 365 mA
Auxiliary Voltage15 V
Inductance150 µH
Switching Frequency 75
Turns Ratio3.75:1.5:1:1:1:1 
Saturation Current2.78 A
Insulation Test Voltage1250 V (AC)
SizeEE25/13/7 
MountTHT 
Length27.05 mm
Width32.25 mm
Height22.86 mm
WE-OLTI Offline Flyback Transformers
750343068
60 - 283 V (AC), 24 V, 2500 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 60 - 283 V (AC)
Output Voltage 124 V
Output Current 12500 mA
Auxiliary Voltage18 V
Inductance230 µH
Switching Frequency 65
Turns Ratio3.88:1:0.83 
Saturation Current4.4 A
Insulation Test Voltage3000 V (AC)
SizePQ2625 
MountTHT 
Length1.15 mm
Width30.35 mm
Height29.3 mm
WE-OLTI Offline Flyback Transformers
750343466
60 - 282 V (AC), 24 V, 1500 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 60 - 282 V (AC)
Output Voltage 124 V
Output Current 11500 mA
Auxiliary Voltage16.5 V
Inductance280 µH
Switching Frequency 100
Turns Ratio4.29 : 1 : 0.72 
Saturation Current1.88 A
Insulation Test Voltage3000 V (AC)
SizeEE20/10/6 
MountTHT 
Length22.2 mm
Width25 mm
Height16.5 mm
WE-OLTI Offline Flyback Transformers
7508113417
64 - 265 V (AC), 19 V, 3850 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 64 - 265 V (AC)
Output Voltage 119 V
Output Current 13850 mA
Auxiliary Voltage11 V
Inductance140 µH
Switching Frequency 30 - 130
Turns Ratio3.25:1:0.58 
Saturation Current9.1 A
Insulation Test Voltage3000 V (AC)
SizeER28/17 
MountTHT 
Length32 mm
Width39 mm
Height36 mm
WE-OLTI Offline Flyback Transformers
7508110329
70 - 265 V (AC), 15 V, 340 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 70 - 265 V (AC)
Output Voltage 115 V
Output Current 1340 mA
Auxiliary Voltage15 V
Inductance700 µH
Switching Frequency 130
Turns Ratio6.6:1:1 
Saturation Current0.575 A
Insulation Test Voltage4000 V (AC)
SizeEE16/7/5 
MountTHT 
Length17.5 mm
Width18.8 mm
Height17.5 mm
WE-OLTI Offline Flyback Transformers
750817930
71 - 481 V (AC), 12 V, 700 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 71 - 481 V (AC)
Output Voltage 112 V
Output Current 1700 mA
Output Voltage 212 V
Output Current 2700 mA
Output Voltage 312 V
Output Current 3700 mA
Auxiliary Voltage18 V
Inductance350 µH
Switching Frequency 100
Turns Ratio7:1:1:1:1.5 
Saturation Current1.8 A
Insulation Test Voltage3000 V (AC)
SizeEE20/10/6 
MountTHT 
Length22.2 mm
Width25 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
750343661
71 - 301 V (AC), 15 V, 250 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 71 - 301 V (AC)
Output Voltage 115 V
Output Current 1250 mA
Output Voltage 25 V
Output Current 23000 mA
Auxiliary Voltage15 V
Inductance500 µH
Switching Frequency 85
Turns Ratio8:1.75:1:2.75 
Saturation Current6 A
Insulation Test Voltage3000 V (AC)
SizeEE20/10/6 
MountTHT 
Length22.2 mm
Width25.8 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
7508110151
85 - 265 V (AC), 5 V, 1000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 15 V
Output Current 11000 mA
Auxiliary Voltage15 V
Inductance1500 µH
Switching Frequency 70
Turns Ratio15.42:1:3.14 
Saturation Current0.425 A
Insulation Test Voltage4000 V (AC)
SizeEP13 
MountTHT 
Length22.2 mm
Width25 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
750811647
85 - 265 V (AC), 17.4 V, 1000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 117.4 V
Output Current 11000 mA
Output Voltage 26.6 V
Output Current 21000 mA
Auxiliary Voltage18 V
Inductance250 µH
Switching Frequency 100
Turns Ratio10:1:2.5:2.75 
Saturation Current1.7 A
Insulation Test Voltage3500 V (AC)
SizeEE20/10/6 
MountTHT 
Length22.2 mm
Width26 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
7508110127
85 - 265 V (AC), 5 V, 1000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 15 V
Output Current 11000 mA
Auxiliary Voltage15 V
Inductance1050 µH
Switching Frequency 120
Turns Ratio14.16:1:3.17 
Saturation Current0.5 A
Insulation Test Voltage4000 V (AC)
SizeEP13 
MountTHT 
Length14.22 mm
Width14.22 mm
Height12.7 mm
WE-OLTI Offline Flyback Transformers
7508112339
85 - 265 V (AC), 12 V, 3000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 112 V
Output Current 13000 mA
Auxiliary Voltage18 V
Auxiliary Voltage 26 V
Inductance220 µH
Switching Frequency 100
Turns Ratio7:1:1.5:0.5 
Saturation Current2.2 A
Insulation Test Voltage4500 V (AC)
SizeEE20/10/6 
MountTHT 
Length22.2 mm
Width25 mm
Height16.5 mm
WE-OLTI Offline Flyback Transformers
750313739
85 - 265 V (AC), 5 V, 1200 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 15 V
Output Current 11200 mA
Auxiliary Voltage17 V
Inductance1100 µH
Switching Frequency 115
Turns Ratio16.5:1:3.5 
Saturation Current0.65 A
Insulation Test Voltage4500 V (AC)
SizeEE16/8/5 
MountTHT 
Length20.32 mm
Width24.38 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
7508110331
85 - 265 V (AC), 15 V, 250 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 115 V
Output Current 1250 mA
Auxiliary Voltage15 V
Inductance500 µH
Switching Frequency 130
Turns Ratio3.25:1:1 
Saturation Current0.5 A
Insulation Test Voltage3000 V (AC)
SizeEE13/7/4 
MountTHT 
Length13.72 mm
Width20.45 mm
Height10.54 mm
WE-OLTI Offline Flyback Transformers
7508111323
85 - 265 V (AC), 12 V, 1000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 112 V
Output Current 11000 mA
Auxiliary Voltage12 V
Inductance2000 µH
Switching Frequency 50 - 102
Turns Ratio8:1:1:1 
Saturation Current0.5 A
Insulation Test Voltage625 V (AC)
SizeEE16/8/5 
MountTHT 
Length17.78 mm
Width26.9 mm
Height13.8 mm
WE-OLTI Offline Flyback Transformers
750315526
85 - 265 V (AC), 5 V, 2000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 15 V
Output Current 12000 mA
Auxiliary Voltage20 V
Inductance435 µH
Switching Frequency 100
Turns Ratio13.2:1:3.8 
Saturation Current1.25 A
Insulation Test Voltage3900 V (AC)
SizeEE16/7/5 
MountTHT 
Length17.5 mm
Width18.8 mm
Height13.8 mm
WE-OLTI Offline Flyback Transformers
7508112341
85 - 265 V (AC), 12 V, 3000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 112 V
Output Current 13000 mA
Auxiliary Voltage12 V
Inductance380 µH
Switching Frequency 60 - 120
Turns Ratio7:1:1 
Saturation Current3.3 A
Insulation Test Voltage4500 V (AC)
SizeEFD25 
MountTHT 
Length26.3 mm
Width33 mm
Height14.76 mm
WE-OLTI Offline Flyback Transformers
750316326
85 - 265 V (AC), 27 V, 6000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 127 V
Output Current 16000 mA
Auxiliary Voltage12 V
Inductance250 µH
Switching Frequency 120
Turns Ratio4:1:0.5 
Saturation Current7.5 A
Insulation Test Voltage3600 V (AC)
SizeERL35 
MountTHT 
Length36.5 mm
Width44 mm
Height28.5 mm
WE-OLTI Offline Flyback Transformers
750316686
85 - 265 V (AC), 12 V, 1000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 112 V
Output Current 11000 mA
Auxiliary Voltage12 V
Inductance500 µH
Switching Frequency 70
Turns Ratio6:1:1 
Saturation Current0.925 A
Insulation Test Voltage3000 V (AC)
SizeEE16/8/5 
MountTHT 
Length20.32 mm
Width24.38 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
750317406
85 - 400 V (AC), 12 V, 1100 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 400 V (AC)
Output Voltage 112 V
Output Current 11100 mA
Output Voltage 24 V
Output Current 210 mA
Auxiliary Voltage25 V
Inductance600 µH
Switching Frequency 100
Turns Ratio21:3:1:6 
Saturation Current1.5 A
Insulation Test Voltage4800 V (AC)
SizeEE20/10/6 
MountTHT 
Length21.5 mm
Width25 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
750318383
85 - 265 V (AC), 12 V, 300 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 85 - 265 V (AC)
Output Voltage 112 V
Output Current 1300 mA
Output Voltage 27 V
Output Current 22000 mA
Output Voltage 3-15 V
Output Current 3300 mA
Auxiliary Voltage15 V
Inductance680 µH
Switching Frequency 66
Turns Ratio29.33:1:1.67:3:3 
Saturation Current1.4 A
Insulation Test Voltage3750 V (AC)
SizeEFD20 
MountTHT 
Length21.5 mm
Width29 mm
Height12.45 mm
WE-OLTI Offline Flyback Transformers
750813743
90 - 144 V (AC), 12 V, 4050 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 90 - 144 V (AC)
Output Voltage 112 V
Output Current 14050 mA
Output Voltage 212 V
Output Current 24050 mA
Auxiliary Voltage15 V
Inductance180 µH
Switching Frequency 60
Turns Ratio10:1:1:1 
Saturation Current7.3 A
Insulation Test Voltage3750 V (AC)
SizeER28/14 
MountTHT 
Length31 mm
Width31 mm
Height25 mm
WE-OLTI Offline Flyback Transformers
750343004
106 - 286 V (AC), 24 V, 3850 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 106 - 286 V (AC)
Output Voltage 124 V
Output Current 13850 mA
Auxiliary Voltage18 V
Inductance160 µH
Switching Frequency 65
Turns Ratio4:1:0.78 
Saturation Current4.7 A
Insulation Test Voltage3750 V (AC)
SizeER28/14 
MountTHT 
Length30.5 mm
Width24 mm
Height33 mm
WE-OLTI Offline Flyback Transformers
750315046
141 - 403 V (AC), 24 V, 2100 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 141 - 403 V (AC)
Output Voltage 124 V
Output Current 12100 mA
Auxiliary Voltage24 V
Inductance1000 µH
Switching Frequency 60
Turns Ratio8.67:1:1 
Saturation Current2 A
Insulation Test Voltage3000 V (AC)
SizeEE25/13/7 
MountTHT 
Length27.05 mm
Width32.25 mm
Height22.86 mm
WE-OLTI Offline Flyback Transformers
750315242
141 - 283 V (AC), 12 V, 1800 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 141 - 283 V (AC)
Output Voltage 112 V
Output Current 11800 mA
Output Voltage 212 V
Output Current 21800 mA
Auxiliary Voltage20 V
Auxiliary Voltage 216 V
Inductance600 µH
Switching Frequency 45
Turns Ratio12:1:1:1.67:1.33 
Saturation Current2.3 A
Insulation Test Voltage3000 V (AC)
SizeEE25/13/7 
MountTHT 
Length27.05 mm
Width32.25 mm
Height22.86 mm
WE-OLTI Offline Flyback Transformers
750315241
142 - 284 V (AC), 36 V, 1000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 142 - 284 V (AC)
Output Voltage 136 V
Output Current 11000 mA
Auxiliary Voltage18 V
Inductance1100 µH
Switching Frequency 45
Turns Ratio4:1:0.5 
Saturation Current1.3 A
Insulation Test Voltage3000 V (AC)
SizeEE20/10/6 
MountTHT 
Length22.2 mm
Width25 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
750316585
177 - 473 V (AC), 12 V, 1500 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 177 - 473 V (AC)
Output Voltage 112 V
Output Current 11500 mA
Output Voltage 25 V
Output Current 22000 mA
Auxiliary Voltage17 V
Inductance600 µH
Switching Frequency 30
Turns Ratio11.63:2.18:1:3 
Saturation Current2.75 A
Insulation Test Voltage4000 V (AC)
SizeEE20/10/6 
MountTHT 
Length22.2 mm
Width25 mm
Height16 mm
WE-OLTI Offline Flyback Transformers
750815039
184 - 265 V (AC), 12 V, 300 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 184 - 265 V (AC)
Output Voltage 112 V
Output Current 1300 mA
Auxiliary Voltage12 V
Inductance6600 µH
Switching Frequency 40 - 130
Turns Ratio18:1:1 
Saturation Current0.225 A
Insulation Test Voltage4000 V (AC)
SizeEE16/7/5 
MountTHT 
Length17.5 mm
Width18.8 mm
Height14.2 mm
WE-OLTI Offline Flyback Transformers
750315340
200 - 265 V (AC), 24 V, 10000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 200 - 265 V (AC)
Output Voltage 124 V
Output Current 110000 mA
Auxiliary Voltage12 V
Inductance200 µH
Switching Frequency 60
Turns Ratio4.5:1:0.5 
Saturation Current15 A
Insulation Test Voltage3000 V (AC)
SizeETD39 
MountTHT 
Length49 mm
Width41.9 mm
Height31.75 mm
WE-OLTI Offline Flyback Transformers
750344367
269 - 282 V (AC), 18 V, 100 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 269 - 282 V (AC)
Output Voltage 118 V
Output Current 1100 mA
Output Voltage 26 V
Output Current 2900 mA
Auxiliary Voltage12 V
Inductance1600 µH
Switching Frequency 110
Turns Ratio16:2:1:2 
Saturation Current0.3 A
Insulation Test Voltage3000 V (AC)
SizeEE16/7/5 
MountTHT 
Length17.5 mm
Width20 mm
Height14 mm
WE-OLTI Offline Flyback Transformers
750342585
400 - 690 V (AC), 24 V, 2000 mA
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 400 - 690 V (AC)
Output Voltage 124 V
Output Current 12000 mA
Output Voltage 216 V
Output Current 2140 mA
Output Voltage 316 V
Output Current 3140 mA
Auxiliary Voltage16 V
Inductance2500 µH
Switching Frequency 68
Turns Ratio35.5:1:2:2:0.75:2 
Saturation Current0.0062 A
Insulation Test Voltage3800 V (AC)
SizeETD29 
MountTHT 
Length35.56 mm
Width24.38 mm
Height44.2 mm