Transformers – Mouser Japan

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WE-FB Flyback Transformers

Würth Elektronik WE-FB Flyback Transformers provide a straightforward design solution, requiring fewer external components and occupying minimal board space. These cost-effective transformers are compatible with multiple Linear Technologies (LT) chipsets, ensuring reliable voltage control over the long term. With an isolation voltage of up to 2.5kV, Würth Elektronik WE-FB Flyback Transformers deliver sustained performance and safety.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Power Rating	Primary Voltage Rating	Secondary Voltage Rating	Mounting Style
Power Transformers - Board Mount WE-FB LT3748 37 uH 25.2 W 750311439 Wurth Elektronik 1: ¥765.7 798Expected 10/30/2026	Mfr. Part # 750311439 Mouser Part # 710-750311439	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 37 uH 25.2 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	798Expected 10/30/2026	Cut Tape ¥765.7 ¥722.5 ¥679.3 ¥637.8 Reel ¥594.6 ¥523.2 MouseReel Available	Min.: 1 Mult.: 1 : 200	25.2 W	37 V to 57 V	12 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3748 14 uH 30 W 750311607 Wurth Elektronik 1: ¥1,534.8 975On Order	Mfr. Part # 750311607 Mouser Part # 710-750311607	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 14 uH 30 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	975On Order On Order Ship Dates Mfr. #: 750311607 Stock: 0 On Order: 475 Expected 12/24/2026 500 Expected 1/28/2027 Factory Lead-Time: 19 Weeks	Cut Tape ¥1,534.8 ¥1,416.8 ¥1,298.9 Reel ¥1,181 ¥973.3 ¥855.4 MouseReel Available	Min.: 1 Mult.: 1 : 125	30 W	30 V to 75 V	12 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3748 14 uH 30 W 750311797 Wurth Elektronik 1: ¥1,330.5 377On Order	Mfr. Part # 750311797 Mouser Part # 710-750311797	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 14 uH 30 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	377On Order On Order Ship Dates Mfr. #: 750311797 Stock: 0 On Order: 127 Expected 11/26/2026 250 Expected 12/17/2026 Factory Lead-Time: 19 Weeks	Cut Tape ¥1,330.5 ¥1,227.5 Reel ¥1,023.2 ¥843.8 ¥742.5 MouseReel Available	Min.: 1 Mult.: 1 : 125	30 W	18 V to 100 V	12 V	SMD/SMT
Power Transformers - Board Mount MID-FLYLT LT8300 300 uH 1.7 W 750312558 Wurth Elektronik 1: ¥644.5 1,470Expected 1/7/2027	Mfr. Part # 750312558 Mouser Part # 710-750312558	Wurth Elektronik	Power Transformers - Board Mount MID-FLYLT LT8300 300 uH 1.7 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	1,470Expected 1/7/2027	Cut Tape ¥644.5 ¥598 ¥506.6 Reel ¥460.1 ¥380.4 MouseReel Available	Min.: 1 Mult.: 1 : 300	1.7 W	36 V to 72 V	12 V, 12 V	SMD/SMT
Power Transformers - Board Mount MID-FLYLT LT8300 300 uH 1.7 W 750312559 Wurth Elektronik 1: ¥594.6 800Expected 12/24/2026	Mfr. Part # 750312559 Mouser Part # 710-750312559	Wurth Elektronik	Power Transformers - Board Mount MID-FLYLT LT8300 300 uH 1.7 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	800Expected 12/24/2026	Cut Tape ¥594.6 ¥551.5 ¥468.4 ¥416.9 Reel ¥416.9 ¥355.5 MouseReel Available	Min.: 1 Mult.: 1 : 400	1.7 W	36 V to 72 V	24 V	SMD/SMT
Power Transformers - Board Mount MID-FLYLT LT8302 9 uH 9 W 750313443 Wurth Elektronik 1: ¥687.7 6,250On Order	Mfr. Part # 750313443 Mouser Part # 710-750313443	Wurth Elektronik	Power Transformers - Board Mount MID-FLYLT LT8302 9 uH 9 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	6,250On Order On Order Ship Dates Mfr. #: 750313443 Stock: 0 On Order: 1,750 Expected 2/18/2027 4,500 Expected 4/22/2027 Factory Lead-Time: 19 Weeks	Cut Tape ¥687.7 ¥636.2 ¥578 ¥524.9 Reel ¥478.4 ¥433.5 MouseReel Available	Min.: 1 Mult.: 1 : 250	9 W	8 V to 32 V	12 V, 12 V	SMD/SMT
Power Transformers - Board Mount MID-IBTI LM5160 36.5 uH 13.8 W 750315038 Wurth Elektronik 1: ¥1,785.6 978Expected 11/12/2026	Mfr. Part # 750315038 Mouser Part # 710-750315038	Wurth Elektronik	Power Transformers - Board Mount MID-IBTI LM5160 36.5 uH 13.8 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	978Expected 11/12/2026	¥1,785.6 ¥1,652.7 ¥1,503.2 ¥1,365.3 View ¥1,242.4 ¥1,129.5	Min.: 1 Mult.: 1	13.8 W	7 V to 26 V	23 V, 23 V, 23 V, 23 V	Through Hole
Power Transformers - Board Mount MID-FLYLT LT8303 150 uH 3.1 W 750315828 Wurth Elektronik 1: ¥408.6 1,200Expected 3/4/2027	Mfr. Part # 750315828 Mouser Part # 710-750315828	Wurth Elektronik	Power Transformers - Board Mount MID-FLYLT LT8303 150 uH 3.1 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	1,200Expected 3/4/2027	Cut Tape ¥408.6 ¥387 ¥327.2 Reel ¥299 Quote Quote MouseReel Available	Min.: 1 Mult.: 1 : 400	3.1 W	36 V to 72 V	12 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3573 30uH 5 W 750370040 Wurth Elektronik 1: ¥744.1 1,499On Order	Mfr. Part # 750370040 Mouser Part # 710-750370040	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3573 30uH 5 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	1,499On Order On Order Ship Dates Mfr. #: 750370040 Stock: 0 On Order: 299 Expected 11/19/2026 1,200 Expected 2/15/2027 Factory Lead-Time: 14 Weeks	Cut Tape ¥744.1 ¥702.6 ¥659.4 ¥616.2 Reel ¥573 ¥498.3 MouseReel Available	Min.: 1 Mult.: 1 : 300	5 W	18 V to 30 V	5 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3748 4.5 uH 36 W 750310617 Wurth Elektronik 1: ¥1,868.6 190Expected 10/30/2026	Mfr. Part # 750310617 Mouser Part # 710-750310617	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 4.5 uH 36 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	190Expected 10/30/2026	Cut Tape ¥1,868.6 ¥1,685.9 ¥1,616.2 ¥1,581.3 Reel ¥1,488.3 View ¥1,415.2 ¥1,360.4 ¥1,338.8 MouseReel Available	Min.: 1 Mult.: 1 : 120	36 W	9 V to 36 V	12 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3748 14 uH 40 W 750310988 Wurth Elektronik 1: ¥1,597.9 200Expected 11/26/2026	Mfr. Part # 750310988 Mouser Part # 710-750310988	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 14 uH 40 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	200Expected 11/26/2026	Cut Tape ¥1,597.9 ¥1,475 Reel ¥1,229.1 ¥1,014.9 ¥892 MouseReel Available	Min.: 1 Mult.: 1 : 100	40 W	12 V	48 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3748 100 uH 12 W 750311456 Wurth Elektronik 1: ¥1,214.2 198Expected 12/3/2026	Mfr. Part # 750311456 Mouser Part # 710-750311456	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 100 uH 12 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	198Expected 12/3/2026	Cut Tape ¥1,214.2 ¥1,127.8 Reel ¥867 MouseReel Available	Min.: 1 Mult.: 1 : 200	12 W	36 V	12 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3748 8 uH 45 W 750311591 Wurth Elektronik 1: ¥2,385.2 285On Order	Mfr. Part # 750311591 Mouser Part # 710-750311591	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 8 uH 45 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	285On Order On Order Ship Dates Mfr. #: 750311591 Stock: 0 On Order: 85 Expected 2/17/2027 200 Expected 2/18/2027 Factory Lead-Time: 17 Weeks	Cut Tape ¥2,385.2 ¥2,234 Reel ¥1,943.4 ¥1,749 MouseReel Available	Min.: 1 Mult.: 1 : 100	45 W	20 V to 48 V	15 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3748 37 uH 25 W 750311889 Wurth Elektronik 1: ¥1,382 1In Stock 300Expected 3/11/2027	Mfr. Part # 750311889 Mouser Part # 710-750311889	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3748 37 uH 25 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	1In Stock 300Expected 3/11/2027	Cut Tape ¥1,382 ¥1,275.6 Reel ¥1,063 ¥877 ¥770.7 MouseReel Available	Min.: 1 Mult.: 1 : 100	25 W	28 V	250 V	SMD/SMT
Power Transformers - Board Mount MID-FLYLT LT8302 12 uH 6 W 750313460 Wurth Elektronik 1: ¥687.7 500Expected 12/3/2026	Mfr. Part # 750313460 Mouser Part # 710-750313460	Wurth Elektronik	Power Transformers - Board Mount MID-FLYLT LT8302 12 uH 6 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	500Expected 12/3/2026	Cut Tape ¥687.7 ¥636.2 Reel ¥478.4 Quote Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	6 W	4 V to 8 V	5 V	SMD/SMT
Power Transformers - Board Mount WE-FB Flyback 5uH 100mVAC 750032489 Wurth Elektronik 1,000: ¥903.6 Non-Stocked Lead-Time 53 Weeks	Mfr. Part # 750032489 Mouser Part # 710-750032489	Wurth Elektronik	Power Transformers - Board Mount WE-FB Flyback 5uH 100mVAC Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 53 Weeks	Cut Tape ¥903.6 Quote Quote	Min.: 1,000 Mult.: 200 : 200	9.9 W	15 V	146 V	SMD/SMT
Power Transformers - Board Mount WE-FB Flyback 2.70uH 500VAC 750310084 Wurth Elektronik 1,000: ¥903.6 Non-Stocked Lead-Time 53 Weeks	Mfr. Part # 750310084 Mouser Part # 710-750310084	Wurth Elektronik	Power Transformers - Board Mount WE-FB Flyback 2.70uH 500VAC Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 53 Weeks	Cut Tape ¥903.6 Quote Quote	Min.: 1,000 Mult.: 200 : 200	9.2 W	10 V	146 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3575 25 uH 4.3 W 750310559 Wurth Elektronik 1: ¥883.7 Non-Stocked Lead-Time 19 Weeks	Mfr. Part # 750310559 Mouser Part # 710-750310559	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3575 25 uH 4.3 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 19 Weeks	Cut Tape ¥883.7 ¥820.5 ¥757.4 ¥694.3 Reel ¥631.2 ¥519.9 MouseReel Available	Min.: 1 Mult.: 1 : 250	4.3 W	12 V to 30 V	3.3 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3575 50 uH 15 W 750311303 Wurth Elektronik 250: ¥755.8 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # 750311303 Mouser Part # 710-750311303	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3575 50 uH 15 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel ¥755.8 ¥624.5	Min.: 250 Mult.: 250 : 250	15 W	36 V	5 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3575 1.5 uH 15 W 750311304 Wurth Elektronik 1: ¥1,071.3 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # 750311304 Mouser Part # 710-750311304	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3575 1.5 uH 15 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 17 Weeks	Cut Tape ¥1,071.3 ¥994.9 Reel ¥764.1 MouseReel Available	Min.: 1 Mult.: 1 : 250	15 W	36 V	5 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3575 750 uH 12 W 750311305 Wurth Elektronik 250: ¥774 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # 750311305 Mouser Part # 710-750311305	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3575 750 uH 12 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel ¥774 ¥639.5	Min.: 250 Mult.: 250 : 250	12 W	36 V	12 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3575 100 uH 12 W 750311306 Wurth Elektronik 200: ¥1,121.2 Non-Stocked Lead-Time 21 Weeks	Mfr. Part # 750311306 Mouser Part # 710-750311306	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3575 100 uH 12 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	Non-Stocked Lead-Time 21 Weeks	Reel ¥1,121.2 ¥1,091.3 ¥1,089.6	Min.: 200 Mult.: 200 : 200	12 W	36 V	12 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3574 100 uH 12 W 750311307 Wurth Elektronik 1: ¥807.2 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # 750311307 Mouser Part # 710-750311307	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3574 100 uH 12 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 17 Weeks	Cut Tape ¥807.2 ¥755.8 ¥702.6 ¥651.1 Reel ¥598 ¥506.6 MouseReel Available	Min.: 1 Mult.: 1 : 250	12 W	36 V	24 V	SMD/SMT
Power Transformers - Board Mount WE-FB LT3575 50 uH 20 W 750311422 Wurth Elektronik 200: ¥862.1 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # 750311422 Mouser Part # 710-750311422	Wurth Elektronik	Power Transformers - Board Mount WE-FB LT3575 50 uH 20 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel ¥862.1 ¥712.6	Min.: 200 Mult.: 200 : 200	20 W	36 V	5 V	SMD/SMT
Power Transformers - Board Mount MID-FLYLT LT8300 300 uH 2 W 750311558 Wurth Elektronik 1: ¥764.1 Non-Stocked Lead-Time 19 Weeks	Mfr. Part # 750311558 Mouser Part # 710-750311558	Wurth Elektronik	Power Transformers - Board Mount MID-FLYLT LT8300 300 uH 2 W Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	Non-Stocked Lead-Time 19 Weeks	Cut Tape ¥764.1 ¥639.5 Reel ¥639.5 ¥473.4 View Quote MouseReel Available	Min.: 1 Mult.: 1 : 300	2 W	35 V to 75 V	5 V	SMD/SMT