Power Transformers - Board Mount

.hide-partial { max-height: none; } .show-more { display: none; }

AC/DC Converter Transformers

Würth Elektronik AC/DC Converter Transformers are designed for offline power applications and meet relevant safety standards and dielectric requirements. AC/DC transformers feature universal offline input with many options for output voltages and offer THT, SMT, and single or multiple output options. Würth Elektronik AC/DC Converter Transformers are ideal for offline switch-mode power supplies (SMPS) used in industrial controls, metering, smart adapters, and auxiliary power supply applications.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 185

Applied Filters:

Product

Primary Voltage Rating

Secondary Voltage Rating

Power Rating

Secondary Current Rating

Mounting Style

Primary Winding

Secondary Winding

Length

Width

Height

Series

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Power Transformers - Board Mount MID-OLTI UCC28740 160 uH 92.4 W

750343004
Wurth Elektronik
1: S/53.09
536In Stock

Mfr. Part #
750343004

Mouser Part #
710-750343004

Wurth Elektronik

Power Transformers - Board Mount MID-OLTI UCC28740 160 uH 92.4 W

Learn More

Datasheet

536In Stock

S/53.09

S/50.45

S/46.90

S/42.47

S/38.93

Min.: 1
Mult.: 1

Flyback Transformers

106 V to 286 V

24 V

92.4 W

3.85 A

Through Hole

Dual Primary Winding

Single Secondary Winding

30.5 mm

24 mm

33 mm

MID-OLTI

Power Transformers - Board Mount MID-SLIM Offline 250uH 50kHz 34mOhm

760871333
Wurth Elektronik
1: S/43.40
1,303In Stock

Mfr. Part #
760871333

Mouser Part #
710-760871333

Wurth Elektronik

Power Transformers - Board Mount MID-SLIM Offline 250uH 50kHz 34mOhm

Learn More

Datasheet

1,303In Stock

S/43.40

S/36.16

S/36.12

S/34.22

View

Min.: 1
Mult.: 1

Offline Transformers

85 VAC to 265 VAC

12 V, 12 V, 12 V

67.5 W

1.875 A, 1.875 A, 1.875 A

Through Hole

Dual Primary Winding

Triple Secondary Winding

29.4 mm

47.5 mm

12 mm

WE-SLIM

Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W

750813144
Wurth Elektronik
1: S/24.41
997In Stock

Mfr. Part #
750813144

Mouser Part #
710-750813144

Wurth Elektronik

Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W

Learn More

Datasheet

997In Stock

S/24.41

S/22.69

S/20.94

S/20.24

S/17.44

Min.: 1
Mult.: 1

Flyback Transformers

85 VAC to 265 VAC

28 V

14 W

500 mA

Through Hole

Single Primary Winding

Dual Secondary Winding

18 mm

16.5 mm

18 mm

MID-OLLT

Power Transformers - Board Mount MID-OLTI UCC28740 230 uH 60 W

750343068
Wurth Elektronik
1: S/51.15
817In Stock

Mfr. Part #
750343068

Mouser Part #
710-750343068

Wurth Elektronik

Power Transformers - Board Mount MID-OLTI UCC28740 230 uH 60 W

Learn More

Datasheet

817In Stock

S/51.15

S/48.58

S/45.19

S/40.91

Quote

Min.: 1
Mult.: 1

Flyback Transformers

94 VAC to 445 VAC

24 V

60 W

2.5 A

Through Hole

Dual Primary Winding

Single Secondary Winding

29.2 mm

30.35 mm

29.3 mm

MID-OLTI

Power Transformers - Board Mount MID-OLTI UCC28722 1.35 mH 6 W

750342104
Wurth Elektronik
1: S/31.65
1,126In Stock

Mfr. Part #
750342104

Mouser Part #
710-750342104

Wurth Elektronik

Power Transformers - Board Mount MID-OLTI UCC28722 1.35 mH 6 W

Learn More

Datasheet

1,126In Stock

S/31.65

S/27.40

S/25.03

S/23.47

S/20.63

Min.: 1
Mult.: 1

Flyback Transformers

85 VAC to 265 VAC

12 V

6 W

500 mA

Through Hole

Dual Primary Winding

Single Secondary Winding

16.9 mm

18.8 mm

13.31 mm

MID-OLTI

Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 190mOhm

760871534
Wurth Elektronik
1: S/38.38
1,459In Stock

Mfr. Part #
760871534

Mouser Part #
710-760871534

Wurth Elektronik

Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 190mOhm

Learn More

Datasheet

1,459In Stock

Cut Tape

S/38.38

S/37.76

S/37.72

S/35.07

Reel

S/30.71

View

MouseReel Available

Min.: 1
Mult.: 1

: 150

Power

85 VAC to 265 VAC

12 V

6.6 W

550 mA

SMD/SMT

Single Primary Winding

Dual Secondary Winding

25.81 mm

16.6 mm

13.5 mm

WE-UOST

Power Transformers - Board Mount WE-LLCR Size ETD34 600uH 150W 48V

760895451
Wurth Elektronik
1: S/68.31
9In Stock

Mfr. Part #
760895451

Mouser Part #
710-760895451

Wurth Elektronik

Power Transformers - Board Mount WE-LLCR Size ETD34 600uH 150W 48V

Learn More

Datasheet

9In Stock

S/68.31

S/65.47

S/61.35

S/55.23

S/49.08

Min.: 1
Mult.: 1

Power

255 VAC to 283 VAC

48 V

150 W

3.1 A

Through Hole

Single Primary Winding

Dual Secondary Winding

36 mm

26 mm

WE-LLCR

Power Transformers - Board Mount WE-UNIT Offline 245uH .21A 1.2Ohm

7491181024
Wurth Elektronik
1: S/30.13
140In Stock

Mfr. Part #
7491181024

Mouser Part #
710-7491181024

Wurth Elektronik

Power Transformers - Board Mount WE-UNIT Offline 245uH .21A 1.2Ohm

Learn More

Datasheet

140In Stock

S/30.13

S/26.51

S/25.11

S/23.71

View

Min.: 1
Mult.: 1

Power

85 VAC to 265 VAC

24 V

3 W

125 mA

Through Hole

Single Primary Winding

Single Secondary Winding

15 mm

11 mm

16.8 mm

WE-UNIT

Power Transformers - Board Mount WE-UNIT 5.6W SMD Offline Trnsfmr

7508170311
Wurth Elektronik
1: S/19.35
880In Stock

Mfr. Part #
7508170311

Mouser Part #
710-7508170311

Wurth Elektronik

Power Transformers - Board Mount WE-UNIT 5.6W SMD Offline Trnsfmr

Learn More

Datasheet

880In Stock

Cut Tape

S/19.35

S/17.91

Reel

S/13.43

MouseReel Available

Min.: 1
Mult.: 1

: 175

Power

55 VAC to 265 VAC

12 V

5 W

420 mA

SMD/SMT

Dual Primary Winding

Dual Secondary Winding

13.8 mm

23.9 mm

11 mm

MID-OLEE

Power Transformers - Board Mount WE-FB SMD Flyback Dialog Semi iW1830

750343109
Wurth Elektronik
1: S/91.36
998In Stock

Mfr. Part #
750343109

Mouser Part #
710-750343109

Wurth Elektronik

Power Transformers - Board Mount WE-FB SMD Flyback Dialog Semi iW1830

Learn More

Datasheet

998In Stock

S/91.36

S/84.31

S/70.26

S/57.96

Quote

Min.: 1
Mult.: 1

Flyback Transformers

90 VAC to 264 VAC

5 V

15 W

3 A

Through Hole

Dual Primary Winding

Single Secondary Winding

22.2 mm

26 mm

16 mm

MID-OLDIA

Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 450mOhm

760871543
Wurth Elektronik
1: S/38.38
268In Stock

Mfr. Part #
760871543

Mouser Part #
710-760871543

Wurth Elektronik

Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 450mOhm

Learn More

Datasheet

268In Stock

Cut Tape

S/38.38

S/37.72

S/35.03

S/32.35

Reel

S/29.08

View

MouseReel Available

Min.: 1
Mult.: 1

: 150

Power

85 VAC to 265 VAC

24 V

7.2 W

300 mA

SMD/SMT

Single Primary Winding

Dual Secondary Winding

25.81 mm

16.6 mm

13.5 mm

WE-UOST

Power Transformers - Board Mount WE-UOST Univ Offline 1500uH 0.8A 4200mOhm

760875112
Wurth Elektronik
1: S/38.34
171In Stock

Mfr. Part #
760875112

Mouser Part #
710-760875112

Wurth Elektronik

Power Transformers - Board Mount WE-UOST Univ Offline 1500uH 0.8A 4200mOhm

Learn More

Datasheet

171In Stock

Cut Tape

S/38.34

S/37.72

S/37.68

S/35.03

Reel

S/29.08

View

MouseReel Available

Min.: 1
Mult.: 1

: 150

Power

195 VAC to 265 VAC

5 V

7.5 W

1.5 A

SMD/SMT

Single Primary Winding

Dual Secondary Winding

25.81 mm

16.6 mm

13.5 mm

WE-UOST

Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 3000mOhm

760871113
Wurth Elektronik
1: S/38.38
249In Stock

Mfr. Part #
760871113

Mouser Part #
710-760871113

Wurth Elektronik

Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 3000mOhm

Learn More

Datasheet

249In Stock

Cut Tape

S/38.38

S/37.76

S/37.72

S/35.03

Reel

S/29.08

View

MouseReel Available

Min.: 1
Mult.: 1

: 150

Power

85 VAC to 265 VAC

5 V

6.25 W

1.25 A

SMD/SMT

Single Primary Winding

Dual Secondary Winding

25.81 mm

16.6 mm

13.5 mm

WE-UOST

Power Transformers - Board Mount MID-OLSTM L6599A 1.396 mH 12 W

760871131
Wurth Elektronik
1: S/29.51
223In Stock

Mfr. Part #
760871131

Mouser Part #
710-760871131

Wurth Elektronik

Power Transformers - Board Mount MID-OLSTM L6599A 1.396 mH 12 W

Learn More

Datasheet

223In Stock

S/29.51

S/27.40

S/25.30

S/23.16

View

Min.: 1
Mult.: 1

Power

85 VAC to 265 VAC

12 V, 12 V

12 W

500 mA, 500 mA

Through Hole

Single Primary Winding

Dual Secondary Winding

22.2 mm

25 mm

16 mm

MID-OLSTM

Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 2920mOhm

760871135
Wurth Elektronik
1: S/38.38
202In Stock

Mfr. Part #
760871135

Mouser Part #
710-760871135

Wurth Elektronik

Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 2920mOhm

Learn More

Datasheet

202In Stock

Cut Tape

S/38.38

S/37.76

S/37.72

S/35.03

Reel

S/30.71

View

MouseReel Available

Min.: 1
Mult.: 1

: 150

Power

85 VAC to 265 VAC

12 V

6.6 W

550 mA

SMD/SMT

Single Primary Winding

Dual Secondary Winding

25.81 mm

16.6 mm

13.5 mm

WE-UOST

Power Transformers - Board Mount MID-OLTI LM5023 400 uH 65.2 W

750313417
Wurth Elektronik
1: S/69.29
195In Stock

Mfr. Part #
750313417

Mouser Part #
710-750313417

Wurth Elektronik

Power Transformers - Board Mount MID-OLTI LM5023 400 uH 65.2 W

Learn More

Datasheet

195In Stock

Cut Tape

S/69.29

S/63.95

Reel

S/63.95

S/43.99

MouseReel Available

Min.: 1
Mult.: 1

: 100

Signal Transformers

85 VAC to 265 VAC

19 V

65.2 W

3.43 A

SMD/SMT

Dual Primary Winding

Triple Secondary Winding

27.03 mm

32.31 mm

13.97 mm

MID-OLTI

Power Transformers - Board Mount MID-OLLT LT3798 180 uH 108 W

750811351
Wurth Elektronik
1: S/57.80
142In Stock
1,000Expected 12/17/2026

Mfr. Part #
750811351

Mouser Part #
710-750811351

Wurth Elektronik

Power Transformers - Board Mount MID-OLLT LT3798 180 uH 108 W

Learn More

Datasheet

142In Stock

1,000Expected 12/17/2026

S/57.80

S/57.06

S/53.48

S/48.15

Min.: 1
Mult.: 1

Power

85 VAC to 265 VAC

36 V

108 W

3 A

Through Hole

Dual Primary Winding

Triple Secondary Winding

39.6 mm

43.18 mm

30.48 mm

MID-OLLT

Power Transformers - Board Mount MID-OLON Flyback Transformer

750341793
Wurth Elektronik
1: S/40.79
304In Stock

Mfr. Part #
750341793

Mouser Part #
710-750341793

Wurth Elektronik

Power Transformers - Board Mount MID-OLON Flyback Transformer

Learn More

Datasheet

304In Stock

S/40.79

S/40.75

S/40.37

S/35.30

S/32.07

Min.: 1
Mult.: 1

Flyback Transformers

85 VAC to 600 VAC

5 V, 12 V

9.8 W

400 mA, 1 A

Through Hole

Dual Primary Winding

Dual Secondary Winding

23 mm

22 mm

17.53 mm

MID-OLON

Power Transformers - Board Mount MID-OLEFD EFD20 TH .8uH 1.4A 24V

750811644
Wurth Elektronik
1: S/23.63
996In Stock

Mfr. Part #
750811644

Mouser Part #
710-750811644

Wurth Elektronik

Power Transformers - Board Mount MID-OLEFD EFD20 TH .8uH 1.4A 24V

Learn More

Datasheet

996In Stock

S/23.63

S/22.11

S/21.06

S/19.11

Min.: 1
Mult.: 1

Power

85 VAC to 265 VAC

24 V, 24 V

19.2 W

1.4 A

Through Hole

Dual Primary Winding

Dual Secondary Winding

21.5 mm

29 mm

12 mm

WE-OLEFD

Power Transformers - Board Mount WE-UNIT Offline 280uH .2A .05Ohm

749118105
Wurth Elektronik
1: S/27.13
171In Stock

Mfr. Part #
749118105

Mouser Part #
710-749118105

Wurth Elektronik

Power Transformers - Board Mount WE-UNIT Offline 280uH .2A .05Ohm

Learn More

Datasheet

171In Stock

S/27.13

S/23.86

S/23.82

S/22.58

View

Min.: 1
Mult.: 1

Power

85 VAC to 265 VAC

5 V

3 W

600 mA

Through Hole

Single Primary Winding

Single Secondary Winding

15 mm

11 mm

16.8 mm

WE-UNIT

Power Transformers - Board Mount MID-OLON NCP1251 750 uH 21.6 W

750312495
Wurth Elektronik
1: S/37.48
556In Stock

Mfr. Part #
750312495

Mouser Part #
710-750312495

Wurth Elektronik

Power Transformers - Board Mount MID-OLON NCP1251 750 uH 21.6 W

Learn More

Datasheet

556In Stock

S/37.48

S/34.60

S/28.84

S/23.78

S/20.90

Min.: 1
Mult.: 1

Flyback Transformers

85 VAC to 265 VAC

12 V

21.6 W

1.8 A

Through Hole

Dual Primary Winding

Single Secondary Winding

23 mm

22 mm

17.53 mm

MID-OLON

Power Transformers - Board Mount WE-UNIT Offline 175uH .85A 26Ohm

749118205
Wurth Elektronik
1: S/29.86
127In Stock

Mfr. Part #
749118205

Mouser Part #
710-749118205

Wurth Elektronik

Power Transformers - Board Mount WE-UNIT Offline 175uH .85A 26Ohm

Learn More

Datasheet

127In Stock

S/29.86

S/26.31

S/26.24

S/24.91

View

Min.: 1
Mult.: 1

Power

85 VAC to 265 VAC

5 V

9 W

600 mA

Through Hole

Single Primary Winding

Single Secondary Winding

18 mm

16.5 mm

18 mm

WE-UNIT

Power Transformers - Board Mount MID-OLTI UCC28700 1.8 mH 3 W

750313959
Wurth Elektronik
1: S/46.44
122In Stock

Mfr. Part #
750313959

Mouser Part #
710-750313959

Wurth Elektronik

Power Transformers - Board Mount MID-OLTI UCC28700 1.8 mH 3 W

Learn More

Datasheet

122In Stock

S/46.44

S/42.90

S/35.73

S/25.92

Min.: 1
Mult.: 1

Flyback Transformers

85 VAC to 265 VAC

12 V

3 W

250 mA

Through Hole

Dual Primary Winding

Single Secondary Winding

13.72 mm

20.45 mm

10.41 mm

MID-OLTI

Power Transformers - Board Mount MID-OLTI TPS23758 150uH 5V 2.4A Flyback 250kHz 12W

750318525
Wurth Elektronik
1: S/16.11
3,378In Stock

Mfr. Part #
750318525

Mouser Part #
710-750318525

Wurth Elektronik

Power Transformers - Board Mount MID-OLTI TPS23758 150uH 5V 2.4A Flyback 250kHz 12W

Learn More

Datasheet

3,378In Stock

Cut Tape

S/16.11

S/14.95

S/13.27

S/11.52

Reel

S/10.67

MouseReel Available

Min.: 1
Mult.: 1

: 125

Flyback Transformers

36 VDC to 57 VDC

5 V

2 A

Board Mount

Single Primary Winding

Dual Secondary Winding

13.97 mm

18.25 mm

14.5 mm

MID-OLTI

Power Transformers - Board Mount MID-UNIT STM Offline 1.60mH 6.20Ohm

750370024
Wurth Elektronik
1: S/22.69
556In Stock

Mfr. Part #
750370024

Mouser Part #
710-750370024

Wurth Elektronik

Power Transformers - Board Mount MID-UNIT STM Offline 1.60mH 6.20Ohm

Learn More

Datasheet

556In Stock

S/22.69

S/21.06

S/17.83

S/16.19

S/13.35

Min.: 1
Mult.: 1

Power

85 VAC to 424 VAC

12 V

6 W

500 mA

Through Hole

Single Primary Winding

Single Secondary Winding

13.72 mm

20.45 mm

10.8 mm

MID-OLSTM

AC/DC Converter Transformers

Customer Service Office

Company

Resources

Support

30 V to 190 V
36 VDC to 57 VDC
45 VAC to 600 VAC
50 VAC to 265 VAC
55 VAC to 265 VAC
60 VAC to 600 VAC
64 VAC to 265 VAC
70 VAC to 265 VAC
80 VAC to 400 VAC
80 VAC to 660 VAC
81 VAC to 275 VAC
85 V to 135 V
85 V to 265 V
85 VAC
85 VAC to 130 VAC
85 VAC to 135 VAC
85 VAC to 265 VAC
85 VAC to 272 VAC
85 VAC to 424 VAC
85 VAC to 600 VAC

- 5 V, 7 V
3.3 V, 5 V, 12 V
3.4 V
4.5 V, 13 V
5 V
5 V, 12 V
5 V, 24 V
5 V, 5 V
5 V, 5 V, 19 V
5 V, 5 V, 7 V
5 V, 7.5 V, 12 V
5 V, 9 V
5.3 V
6 V
6 V, 15 V
6 V, 25 V
6 V, 35 V
6.2 V
8 V
8 V, 15 V

2 W
2.4 W
2.8 W
3 W
3.2 W
3.4 W
3.5 W
3.6 W
3.9 W
4.1 W
4.2 W
4.5 W
4.7 W
4.8 W
5 W
5.1 W
5.4 W
6 W
6.25 W
6.3 W

10 mA, 5.25 A
20 mA, 700 mA
50 mA
50 mA, 5 A
80 mA, 340 mA
100 mA, 700 mA
125 mA
150 mA, 150 mA, 450 mA
150 mA, 600 mA
160 mA
170 mA
200 mA, 1 A
200 mA, 500 mA
210 mA
230 mA
250 mA
275 mA
280 mA
285 mA, 285 mA
300 mA

13.72 mm
13.8 mm
13.97 mm
14.2 mm
14.22 mm
14.73 mm
15 mm
15.62 mm
16.9 mm
17.04 mm
17.78 mm
17.96 mm
18 mm
18.5 mm
18.8 mm
18.9 mm
20 mm
20.2 mm
20.32 mm
20.83 mm

10 mm
11 mm
13.84 mm
13.97 mm
14.4 mm
14.73 mm
15 mm
15.75 mm
16.5 mm
16.6 mm
16.9 mm
18.25 mm
18.8 mm
20.2 mm
20.3 mm
20.45 mm
21 mm
21.08 mm
21.9 mm
22 mm

10.16 mm
10.41 mm
10.8 mm
10.92 mm
11 mm
11.68 mm
12 mm
12.7 mm
13 mm
13.31 mm
13.5 mm
13.55 mm
13.59 mm
13.8 mm
13.97 mm
14 mm
14.1 mm
14.3 mm
14.5 mm
14.6 mm