Würth Elektronik GmbH & Co. KG- Power Transformers

Würth Elektronik is a leading manufacturer of electronic and electromechanical components, part of the globally renowned Würth Group, founded in 1945 and headquartered in Niedernhall, Germany. The company specializes in EMC and inductive components, including ferrites, ferrite beads, inductors, common-mode chokes, transformers, and connectors. Through its Midcom division, Würth Elektronik leverages a worldwide network of ISO-certified production plants and distribution hubs to serve diverse markets. The product portfolio also extends to PCB assembly solutions, wireless connectivity modules, and passive components such as capacitors and resistors. Known for its 'more than you expect' philosophy, the company provides extensive engineering support, from design-in to prototyping and mass production. With over 120 technical salespeople globally, customers receive rapid, localized assistance and free design samples. Würth Elektronik holds a strong market position in the EMC component segment, driven by high-quality manufacturing and continuous innovation. Its components are essential in automotive electronics, industrial automation, consumer devices, and telecommunications infrastructure. The company’s commitment to reliability and comprehensive technical documentation makes it a trusted partner for engineers worldwide.

Power Transformers - 型号列表

110 parts in total

Mfr Part #	Quantity Available	Price	Other Names	Standard Package	RoHS	Inductance	Power - Rated	Voltage - Isolation	Width	Height	Length	Packaging	Mounting Type	Size / Dimension	Termination Style	Height - Seated (Max)	Type	Applications	Operating Temperature	Voltage - Primary	Frequency	Intended Chipset	Chipset Manufacturer	Series	Primary Material	Voltage - Auxiliary	Package / Case	DC Resistance (DCR) - Secondary	SVHC	Tariff No	Voltage Rating	Voltage - Supply	Voltage - Secondary	Weight	Transformer Type	Current Rating (Max)	Plug Type	Product	Frequency Range	Resistance - Initial (Ri) (Min)	Product Type	メーカ	Frequency - Max	Power - Peak Pulse	Current Rating (Per Contact)	End - Size	Operating Temperature - Junction	Turns Ratio - Primary:Secondary	Depth	Maximum Temperature Limit	DC Resistance (DCR) (Max)	Factory Pack Quantity	Mechanical Life	Resistance - Input	Resistance @ 25degC	Current - Supply (Disable) (Max)	Size	Material - Core	Number of Units	Other Specifications	Inductance Range	Number of Outputs	DC Resistance (DCR)	Secondary Winding(s)	Frequency - Operating	Current - Output (Max)	Mounting Style	Primary Winding(s)	Function
2 749118215 Power Transformers WE-UNIT Off-Line Transformer EE13/7/4 TRANSFORMER OFF LINE 4000V UNIT Offline Transformer 110-380V 5V 8W Power Transformers WE-UNIT Transformer 0.9mH 28mohm Wurth Electronics	29	1: ¥510.204	732-3622	432	RoHS Compliant	900 uH	9 W	4000Vrms	20.2 mm	24.5 mm	16.5 mm	Tray	Through Hole	24.50mm L x 20.20mm W	Through Hole	16.50mm	Off-Line Transformer We-Unit	LED Drivers, AC/DC SMPS	- 40 C to + 125 C	120 ~ 385V	132kHz	NCP101x, NCP105x	On Semiconductor	WE-UNIT	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	New At Mouser	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 750871013 電力変圧器 Offline Transformer 1.80mH 5.40ohm TRANS FLYBACK NXP STARPLUG 1.8MH Power Transformers Offline Transformer 1.80mH 5.40ohm Midcom / Wurth Electronics	10	100: ¥34.34	732-2238	100	RoHS 認証	1.8 mH	3 W	4000Vrms	13.72 mm	10.16 mm	19.69 mm	Tray	Through Hole	19.69mm L x 13.72mm W	Through Hole	10.16 mm	Off-Line Transformer We-Unit	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	115 ~ 390V	100kHz	TEA1521T	NXP Semiconductors	-	-	15V @ 30mA	Reel	-	-	-	-	-	-	-	-	350 mA	-	-	-	-	-	Wurth Electronics	13.72 mm	3 W	350 mA	Through Hole	- 40 C to + 125 C	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 7491182024 電力変圧器 WE-UNIT Off-Line Transformer EE16/7/4 TRANSFORMER OFF LINE 4000V UNIT Offline Transformer 110-380V 24V 8W Power Transformers WE-UNIT Off-Line 0.9mH 10kHz 4.3ohm TRANSFORMER, WE-UNIT E16/7/4 Wurth Electronics	10	1: ¥32.776	732-3624	462	RoHS 認証	900 uH	9 W	4000Vrms	18 mm	16.5 mm	18 mm	Tray	Through Hole	18.00mm L x 16.50mm W	Through Hole	16.5 mm	Off-Line Transformer We-Unit	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	120 ~ 385V	132kHz	NCP101x, NCP105x	On Semiconductor	WE-UNIT	:85V to 265V	-	Tray	-	:No SVHC (20-Jun-2013)	85043180	:24V	:265V	:1 x 24V	0.012	:Off Line	-	:-	-	-	-	-	Wurth Electronics	18 mm	9 W	-	Through Hole	- 40 C to + 125 C	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
3 7491181012 電力変圧器 WE-UNIT Off-Line 2.8mH 10kHz 11ohm TRANSFORMER OFF LINE 4000V UNIT Offline Transformer 110-380V 12V 3W Power Transformers WE-UNIT Off-Line 2.8mH 10kHz 11ohm 8.1:1 通孔电信变压器, 2.8mH, 11Ω Wurth Electronics	23	132: ¥38.05	732-3639	1,056	RoHS 認証	2.8 mH	3 W	4000Vrms	15 mm	11 mm	16.8 mm	Tray	Through Hole	15.00mm L x 11.00mm W	Through Hole	11 mm	Off-Line Transformer We-Unit	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	120 ~ 385V	132kHz	NCP101x, NCP105x	On Semiconductor	WE-UNIT	-	-	Tray	290mΩ	-	-	-	-	-	-	-	-	-	-	-	-	-	Wurth Electronics	15 mm	3 W	-	Through Hole	- 40 C to + 125 C	8.1:1	16.8mm	+125°C	11Ω	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750811116 変圧器オーディオとシグナル SMD OffLin Transfrmr 85-265V 12.75W TRANS 3000V SMD Transformers Audio & Signal SMD OffLin Transfrmr 85-265V 12.75W Midcom / Wurth Electronics	124	1: ¥112.064	732-3312-2	150	RoHS 認証	1.31 mH	12.75 W	3000Vrms	0.7 mm	0.543 mm	1.028 mm	Tape & Reel (TR)	Surface Mount	26.10mm L x 17.80mm W	SMD/SMT	0.543 mm	Surface Mount Offline Transformer for LED Lighting	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	85 ~ 265V	80 ~ 200kHz	-	-	750	2.23 Ohms	-	1.028 mm x 0.7 mm x 0.543 mm	0.009 Ohms	-	-	-	-	-	-	-	800 mA	-	Transformers	80 kHz to 200 kHz	2.23 Ohms	Transformers	Wurth Electronics	0.7 mm	12.75 W	-	SMD/SMT	- 40 C to + 125 C	-	-	-	-	150	-	2.23 Ohms	2.23 Ohms	800 mA	1.028 mm L x 0.7 mm W x 0.543 mm H	0.009 Ohms	150	3000 VAC	-	-	-	-	-	-	-	-	-
2 750871111 電力変圧器 Offline Transformer 1.70mH 2.4ohm TRANS OFF LINE POWER ST VIPER27L Power Transformers Offline Transformer 1.70mH 2.4ohm TRANSFORMER, WE-UNIT STM VIPER, 27L Midcom / Wurth Electronics	17	1: ¥75.072	732-2259	70	RoHS Compliant	1.7 mH	12 W	4000Vrms	21 mm	16 mm	25 mm	Tray	Through Hole	23.00mm L x 21.00mm W	Through Hole	16.00mm	For AC/DC Converters	Flyback Converters	-40°C ~ 125°C	120 ~ 385V	60kHz	VIPER27L	STMicroelectronics	-	:85V to 265V	12V @ 10mA	-	-	:No SVHC (20-Jun-2013)	85043180	:5V	:265V	:1 x 5V	0.035	:Off Line	-	:-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750815542 変圧器オーディオとシグナル SMD OffLin Transfrmr 195-265V 15.5W TRANS 3000V SMD Transformers Audio & Signal SMD OffLin Transfrmr 195-265V 15.5W Midcom / Wurth Electronics	147	1: ¥112.064	732-3311-2	150	Lead free / RoHS Compliant	5 mH	13.32 W	3000Vrms	0.7 mm	0.543 mm	1.028 mm	Tape & Reel (TR)	Surface Mount	26.10mm L x 17.80mm W	SMD/SMT	13.80mm	For AC/DC Converters	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	195 ~ 265V	80 ~ 200kHz	-	-	750	10.67 Ohms	-	1.028 mm x 0.7 mm x 0.543 mm	0.078 Ohms	-	-	-	-	-	-	-	390 mA	-	Transformers	80 kHz to 200 kHz	10.67 Ohms	Offline Transformers	-	-	-	-	-	-	-	-	-	-	150	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 749118205 電力変圧器 WE-UNIT Transformer 0.9mH 26mohm TRANSFORMER OFF LINE 4000V UNIT Offline Transformer 110-380V 5V 8W Power Transformers WE-UNIT Transformer 0.9mH 26mohm 19:1:1 通孔电信变压器, 0.9mH, 4.3Ω Wurth Electronics	511	1: ¥61.676	732-3628	462	RoHS Compliant	900 uH	9 W	4000Vrms	18 mm	16.5 mm	18 mm	Tray	Through Hole	18.00mm L x 16.50mm W	Through Hole	18.00mm	For AC/DC Converters	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	120 ~ 385V	132kHz	NCP101x, NCP105x	On Semiconductor	WE-UNIT	-	-	-	26mΩ	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.85 A	-	-	19:1:1	18mm	+125°C	4.3Ω	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 750310660 変圧器オーディオとシグナル Offline Transformer TRANS OFF LINE POWER ST VIPER17H Transformers Audio & Signal Offline Transformer TRANSFORMER, WE-UNIT STM VIPER, 17H Midcom / Wurth Electronics	10	1: ¥23.936	732-2253	500	RoHS Compliant	1.2 mH	6 W	4000Vrms	20.83 mm	17.53 mm	22.35 mm	Tray	Through Hole	22.35mm L x 20.83mm W	Through Hole	17.53mm	For AC/DC Converters	Flyback Converters	-40°C ~ 125°C	85 ~ 265V	120kHz	VIPER17H	STMicroelectronics	-	2 Ohms	12V @ 20mA	22.35 mm x 20.83 mm x 17.53 mm	0.06 Ohms	:No SVHC (20-Jun-2013)	85043180	:12V	:265V	:1 x 12V	0.012	:Off Line	20 mA	:-	Transformers	120 kHz	2 Ohms	Flyback Transformers	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 750370024 変圧器オーディオとシグナル Offline Transformer TRANS OFF LINE POWER ST VIPER17H Transformers Audio & Signal Offline Transformer TRANSFORMER, WE-UNIT STM VIPER, 17H Midcom / Wurth Electronics	27	1: ¥44.4262	732-2252	500	RoHS Compliant	1.6 mH	6 W	4000Vrms	13.72 mm	10.8 mm	19.69 mm	Tray	Through Hole	19.69mm L x 13.72mm W	Through Hole	10.80mm	For AC/DC Converters	Flyback Converters	-40°C ~ 125°C	120 ~ 600V	115kHz	VIPER17H	STMicroelectronics	-	6.2 Ohms	16V @ 50mA	19.69 mm x 13.72 mm x 10.8 mm	0.1 Ohms	:No SVHC (20-Jun-2013)	85043180	:12V	:265V	:1 x 12V	0.01	:Off Line	500 mA	:-	Transformers	115 kHz	6.2 Ohms	Offline Transformers	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 749196321 電力変圧器 WE-FLEX Transformer 14.2uH 0.63A TRANSFORMER 14.2UH .97A SMD Flex Transformer WE-FLEX EFD15 Power Transformers WE-FLEX Transformer 14.2uH 0.63A Wurth Elektronik 3输出 SMPS 变压器, 14.2μH Wurth Electronics	29	300: ¥40.58	732-2446-2	300	Lead free / RoHS Compliant	14.2 uH	500 VA	500VDC	16 mm	8.3 mm	17.5 mm	Tape & Reel (TR)	Surface Mount	17.50mm L x 16.00mm W	SMD/SMT	8.30mm	Configurable (For DC/DC)	Flyback Converters	-40°C ~ 125°C	-	-	-	-	WE-FLEX	-	-	-	-	-	-	-	-	-	-	-	-	-	Control Transformers	-	-	-	-	-	-	0.97 A	-	-	1:1:1:1:1:1	8.3mm	+125°C	-	-	-	-	-	-	-	-	-	-	14.2µH	3	140mΩ	Triple Secondary Winding	1MHz	0.97A	SMD/SMT	Triple Primary Winding	Y
750871010 電力変圧器 Offline Transformer 3.30mH 1.05ohms TRANS OFF LINE POWER ST VIPER17L Power Transformers Offline Transformer 3.30mH 1.05ohms Midcom / Wurth Electronics	407	1: ¥49.368	732-2254	250	RoHS Compliant	3.3 mH	5 W	4000Vrms	20 mm	16 mm	24 mm	Tray	Through Hole	24.00mm L x 20.00mm W	Through Hole	16.00mm	For AC/DC Converters	Flyback Converters	-40°C ~ 125°C	120 ~ 385V	60kHz	VIPER17L	STMicroelectronics	-	-	12V @ 10mA	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750871035 電力変圧器 Offline Transformer 2mH 4.60ohm TRANS FLYBACK NXP STARPLUG 2.0MH Power Transformers Offline Transformer 2mH 4.60ohm Midcom / Wurth Electronics	10	100: ¥35.2648	732-2239	100	RoHS Compliant	2 mH	5.4 W	4000Vrms	15 mm	18.5 mm	15.75 mm	Tray	Through Hole	15.75mm L x 15.00mm W	Through Hole	18.50mm	For AC/DC Converters	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	115 ~ 390V	100kHz	TEA1522T	NXP Semiconductors	-	-	15V @ 30mA	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	360 mA	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750871030 Power Transformers Offline Transformer 2.38mH 1ohm TRANS OFF LINE POWER ST VIPER17L Midcom / Wurth Electronics	556	1: ¥38.284	732-2255	250	RoHS Compliant	2.38 mH	6 W	4000Vrms	20 mm	16 mm	24 mm	Tray	Through Hole	24.00mm L x 20.00mm W	Through Hole	16.00mm	For AC/DC Converters	Flyback Converters	-40°C ~ 125°C	120 ~ 385V	60kHz	VIPER17L	STMicroelectronics	-	-	12V @ 10mA	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750811137 変圧器オーディオとシグナル SMD OffLin Transfrmr 85-265V 12.6W TRANS 3000V SMD Transformers Audio & Signal SMD OffLin Transfrmr 85-265V 12.6W Midcom / Wurth Electronics	150	150: ¥34.102	732-3321-2	150	Lead free / RoHS Compliant	1.39 mH	12.6 W	3000Vrms	0.7 mm	0.543 mm	1.028 mm	Tape & Reel (TR)	Surface Mount	26.10mm L x 17.80mm W	SMD/SMT	13.80mm	For AC/DC Converters	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	85 ~ 265V	80 ~ 200kHz	-	-	750	2.2 Ohms	-	1.028 mm x 0.7 mm x 0.543 mm	0.035 Ohms	-	-	-	-	-	-	-	740 mA	-	Transformers	80 kHz to 200 kHz	2.2 Ohms	Offline Transformers	-	-	-	-	-	-	-	-	-	-	150	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750871032 Power Transformers Offline Transformer 1.55mH 2.15ohm TRANS OFF LINE POWER PI LNK605 Midcom / Wurth Electronics	158	1: ¥92.208	732-2244	250	RoHS Compliant	1.55 mH	4.2 W	4000Vrms	16.9 mm	13 mm	18.8 mm	Tray	Through Hole	18.80mm L x 16.90mm W	Through Hole	13.00mm	For AC/DC Converters	Flyback Converters	-40°C ~ 125°C	120 ~ 375V	-	LNK605	Power Integrations	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
3 749118105 Power Transformers WE-UNIT Transformer 2.8mH 11ohm TRANSFORMER OFF LINE 4000V UNIT Offline Transformer 110-380V 5V 3W TRANSFORMER, WE-UNIT E13/7/4 18.9:1 通孔电信变压器, 2.8mH, 11Ω Wurth Electronics	49	1: ¥36.24	732-3640	1,056	RoHS Compliant	2.8 mH	3 W	4000Vrms	15 mm	11 mm	16.8 mm	Tray	Through Hole	15.00mm L x 11.00mm W	SMD/SMT	16.80mm	For AC/DC Converters	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	120 ~ 385V	132kHz	NCP101x, NCP105x	On Semiconductor	WE-UNIT	:85V to 265V	-	-	-	:No SVHC (20-Jun-2013)	85043180	:5V	:265V	:1 x 5V	0.01	:Off Line	-	:-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 750871110 Power Transformers Offline Transformer 1.60mH 4.8ohm TRANS OFF LINE POWER ST VIPER28 TRANSFORMER, WE-UNIT STM VIPER, 28 Midcom / Wurth Electronics	96	1: ¥63.1722	732-2258	125	RoHS Compliant	1.6 mH	12.5 W	4000Vrms	21 mm	16 mm	25 mm	Tray	Through Hole	25.00mm L x 21.00mm W	Through Hole	16.00mm	For AC/DC Converters	Flyback Converters	-40°C ~ 125°C	120 ~ 385V	-	VIPER28	STMicroelectronics	-	:85V to 265V	10V @ 10mA	-	-	:No SVHC (20-Jun-2013)	85043180	:5V	:265V	:1 x 5V	0.025	:Off Line	-	:-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
3 7491182112 Power Transformers WE-UNIT Off-Line 0.9mH 10kHz 4.3ohm TRANSFORMER OFF LINE 4000V UNIT Offline Transformer 110-380V 12V 8W TRANSFORMER, WE-UNIT E16/8/5 9.5:1:1 通孔电信变压器, 0.9mH, 3Ω Wurth Electronics	10	1: ¥55.83	732-3620	432	RoHS Compliant	900 uH	9 W	4000Vrms	20.2 mm	24.5 mm	16.5 mm	Tray	Through Hole	24.50mm L x 20.20mm W	Through Hole	16.50mm	For AC/DC Converters	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	120 ~ 385V	132kHz	NCP101x, NCP105x	On Semiconductor	WE-UNIT	:85V to 265V	-	-	-	:No SVHC (20-Jun-2013)	85043180	:12V	:265V	:1 x 12V	0.012	:Off Line	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2 749118115 電力変圧器 WE-UNIT Transformer 2.8mH 8ohm TRANSFORMER OFF LINE 4000V UNIT Offline Transformer 110-380V 5V 3W Power Transformers WE-UNIT Transformer 2.8mH 8ohm 18.9:1 通孔电信变压器, 2.8mH, 8Ω Wurth Electronics	10	1: ¥42.432	732-3632	720	RoHS Compliant	2.8 mH	3 W	4000Vrms	15 mm	21.5 mm	12 mm	Tray	Through Hole	21.50mm L x 15.00mm W	Through Hole	12.00mm	For AC/DC Converters	LED Drivers, AC/DC SMPS	-40°C ~ 125°C	120 ~ 385V	132kHz	NCP101x, NCP105x	On Semiconductor	WE-UNIT	-	-	-	50mΩ	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	18.9:1	12mm	+125°C	8Ω	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-