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Power Transformers - Board Mount

Board Mount Power Transformers are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many board mount power transformer manufacturers including Bel, Bourns, Pulse, Tamura, Triad Magnetics, Wurth Elektronik & more. Please view our selection of power transformers below.

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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.	Product	Primary Voltage Rating	Secondary Voltage Rating	Power Rating	Secondary Current Rating	Mounting Style	Primary Winding	Secondary Winding	Length	Width	Height	Series
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 ST-4-28 Bel Signal Transformer 1: ¥2,370.2 77In Stock	Mfr. Part # ST-4-28 Mouser Part # 530-ST-4-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	77In Stock	¥2,370.2 ¥2,172.6 ¥2,043 ¥1,968.3 View ¥1,925.1 ¥1,891.9 ¥1,651 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	28 V CT/14 V	6 VA	200 mA/400 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 ST-4-36 Bel Signal Transformer 1: ¥2,325.4 60In Stock 100Expected 12/9/2026	Mfr. Part # ST-4-36 Mouser Part # 530-ST-4-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	60In Stock 100Expected 12/9/2026	¥2,325.4 ¥2,131.1 ¥2,003.2 ¥1,930.1 View ¥1,827.1 ¥1,710.8 ¥1,647.7 ¥1,619.5	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	36 V CT/18 V	6 VA	170 mA/340 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 ST-5-16 Bel Signal Transformer 1: ¥2,632.7 122In Stock	Mfr. Part # ST-5-16 Mouser Part # 530-ST-5-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	122In Stock	¥2,632.7 ¥2,305.5 ¥1,921.8 ¥1,867 View ¥1,817.1 ¥1,707.5 ¥1,647.7 ¥1,622.8 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	16 V CT/8 V	12 VA	800 mA/1.6 A	Through Hole	Single Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 ST-5-20 Bel Signal Transformer 1: ¥2,602.8 43In Stock	Mfr. Part # ST-5-20 Mouser Part # 530-ST-5-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	43In Stock	¥2,602.8 ¥2,380.2 ¥2,234 ¥2,152.7 View ¥2,076.3 ¥1,923.4 ¥1,868.6 ¥1,852	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	20 V CT/10 V	12 VA	600 mA/1.2 A	Through Hole	Single Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 ST-5-28 Bel Signal Transformer 1: ¥2,715.7 19In Stock	Mfr. Part # ST-5-28 Mouser Part # 530-ST-5-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	19In Stock	¥2,715.7 ¥2,431.7 ¥2,345.3 ¥2,036.4 View ¥1,979.9 ¥1,845.4 ¥1,820.5	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	28 V CT/14 V	12 VA	420 mA/840 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 ST-5-48 Bel Signal Transformer 1: ¥4,062.8 26In Stock	Mfr. Part # ST-5-48 Mouser Part # 530-ST-5-48	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	26In Stock	¥4,062.8 ¥3,767.1 ¥3,200.7 ¥3,067.9 View ¥3,046.3 ¥2,979.8 ¥2,941.6 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	48 V CT/24 V	12 VA	250 mA/500 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 ST-6-24 Bel Signal Transformer 1: ¥4,061.1 5In Stock	Mfr. Part # ST-6-24 Mouser Part # 530-ST-6-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	5In Stock	¥4,061.1 ¥3,479.8 ¥3,335.3 ¥2,925 View ¥2,856.9 ¥2,740.7 ¥2,664.2 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	24 V CT/12 V	20 VA	800 mA/1.6 A	Through Hole	Single Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 ST-6-28 Bel Signal Transformer 1: ¥4,223.9 14In Stock	Mfr. Part # ST-6-28 Mouser Part # 530-ST-6-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	14In Stock	¥4,223.9 ¥3,959.8 ¥2,747.3 ¥2,705.8 View ¥2,674.2 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	28 V CT/14 V	20 VA	700 mA/1.4 A	Through Hole	Single Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 ST-7-12 Bel Signal Transformer 1: ¥5,177.3 17In Stock	Mfr. Part # ST-7-12 Mouser Part # 530-ST-7-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	17In Stock	¥5,177.3 ¥4,969.7 ¥3,680.8 ¥3,225.7 View ¥3,189.1 ¥3,152.6 ¥3,114.4 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	12.6 V CT/6.3 V	36 VA	2.85 A/5.7 A	Through Hole	Single Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	40.4 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 ST-7-20 Bel Signal Transformer 1: ¥3,496.4 40In Stock	Mfr. Part # ST-7-20 Mouser Part # 530-ST-7-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	40In Stock	¥3,496.4 ¥3,395.1 ¥3,393.4 ¥3,145.9 View ¥3,122.7 ¥3,071.2 ¥3,029.7 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	20 V CT/10 V	36 VA	1.8 A/3.6 A	Through Hole	Single Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	40.4 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 ST-7-48 Bel Signal Transformer 1: ¥5,243.8 9In Stock	Mfr. Part # ST-7-48 Mouser Part # 530-ST-7-48	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	9In Stock	¥5,243.8 ¥5,036.2 ¥3,720.6 ¥3,248.9 View ¥3,215.7 ¥3,175.8 ¥3,134.3 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	48 V CT/24 V	36 VA	750 mA/1.5 A	Through Hole	Single Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	40.4 mm	ST
Power Transformers - Board Mount 1CT:1.33CT ADM2482E/ADM2487E 782482/53VC Murata Power Solutions 1: ¥340.5 318In Stock 1,600On Order	Mfr. Part # 782482/53VC Mouser Part # 580-782482/53VC	Murata Power Solutions	Power Transformers - Board Mount 1CT:1.33CT ADM2482E/ADM2487E Learn More about Murata Power Solutions 782482 series murata low emi converter transformers	Datasheet	318In Stock 1,600On Order On Order Ship Dates Mfr. #: 782482/53VC Stock: 318 Can Ship Immediately On Order: 500 Expected 11/23/2026 1,100 Expected 12/7/2026 Factory Lead-Time: 13 Weeks	¥340.5 ¥308.9 ¥287.4 ¥250.8 View ¥247.5 ¥239.2 ¥235.9 ¥229.2 ¥224.2	Min.: 1 Mult.: 1		5 V	3.3 V			Through Hole			9.77 mm	9.14 mm	6.35 mm	782482
Power Transformers - Board Mount TRANSFORMER 360UH MAX253 SMD 78253/35JC-R Murata Power Solutions 1: ¥626.2 284In Stock 1,000On Order	Mfr. Part # 78253/35JC-R Mouser Part # 580-78253/35JC-R	Murata Power Solutions	Power Transformers - Board Mount TRANSFORMER 360UH MAX253 SMD Learn More about Murata Power Solutions Murata78253J	Datasheet	284In Stock 1,000On Order On Order Ship Dates Mfr. #: 78253/35JC-R Stock: 284 Can Ship Immediately On Order: 500 Expected 12/28/2026 500 Expected 3/8/2027 Factory Lead-Time: 13 Weeks	Cut Tape ¥626.2 ¥568.1 ¥526.5 ¥511.6 Reel ¥480 View ¥495 ¥490 ¥466.7 ¥438.5 MouseReel Available	Min.: 1 Mult.: 1 : 500		3.3 V	5 V	500 mW	100 mA	SMD/SMT	Single Primary Winding	Single Secondary Winding	9.52 mm	9 mm	6.35 mm	78253
Power Transformers - Board Mount HCT Transformer, 15mm CR, 3+3PIN, 7.62kVDC,-40 to 125 C HCTSM150102HL-E Bourns 1: ¥1,621.1 6In Stock 6,200On Order	Mfr. Part # HCTSM150102HL-E Mouser Part # 652-HCTSM150102HL-E	Bourns	Power Transformers - Board Mount HCT Transformer, 15mm CR, 3+3PIN, 7.62kVDC,-40 to 125 C Learn More about Bourns hctsm150102hl transformer	Datasheet	6In Stock 6,200On Order On Order Ship Dates Mfr. #: HCTSM150102HL-E Stock: 6 Can Ship Immediately On Order: 3,200 Expected 6/4/2027 3,000 Expected 8/2/2027 Factory Lead-Time: 24 Weeks	Cut Tape ¥1,621.1 ¥1,372 ¥1,315.5 ¥1,274 Reel ¥1,182.6 View ¥1,234.1 ¥1,144.4 ¥1,109.5 MouseReel Available	Min.: 1 Mult.: 1 : 200	Transformers					SMD/SMT			21.3 mm	15 mm	9.6 mm	HCT
Power Transformers - Board Mount Push-Pull Func-Insultn 5V 1:1.1 1.5W PAD002-T764111S Bourns 1: ¥343.8 635In Stock 6,400Expected 11/13/2026	Mfr. Part # PAD002-T764111S Mouser Part # 652-PAD002-T764111S	Bourns	Power Transformers - Board Mount Push-Pull Func-Insultn 5V 1:1.1 1.5W Learn More about Bourns pad00x t764	Datasheet	635In Stock 6,400Expected 11/13/2026	Cut Tape ¥343.8 ¥312.3 ¥290.7 ¥282.4 Reel ¥252.5 View ¥274.1 ¥270.7 ¥247.5 MouseReel Available	Min.: 1 Mult.: 1 : 800	Isolation Transformers			2 W		PCB Mount			7.1 mm	6.55 mm	4 mm
Power Transformers - Board Mount Push-Pull Transformer, 4+4 PINS, 12V to 15V for SN6507,-40C to +125C SM91208L-E Bourns 1: ¥709.2 36In Stock	Mfr. Part # SM91208L-E Mouser Part # 652-SM91208L-E	Bourns	Power Transformers - Board Mount Push-Pull Transformer, 4+4 PINS, 12V to 15V for SN6507,-40C to +125C Learn More about Bourns sm91207l sm91208l transformers	Datasheet	36In Stock	Cut Tape ¥709.2 ¥642.8 ¥584.7 ¥566.4 Reel ¥543.1 View ¥548.1 ¥538.2 ¥521.6 ¥500 MouseReel Available	Min.: 1 Mult.: 1 : 200	Transformers					SMD/SMT			11.8 mm	13.2 mm	11.6 mm
Power Transformers - Board Mount XFMR,AC FORWARD,60W,EFD20 NPB PA2398NL Pulse Electronics 1: ¥911.9 12In Stock	Mfr. Part # PA2398NL Mouser Part # 673-PA2398NL	Pulse Electronics	Power Transformers - Board Mount XFMR,AC FORWARD,60W,EFD20 NPB	Datasheet	12In Stock	¥911.9 ¥784 ¥740.8 ¥717.6 View ¥699.3 ¥599.6 ¥558.1 ¥544.8 ¥538.2	Min.: 1 Mult.: 1	Forward Transformers
Power Transformers - Board Mount 27W 11uH 200-700kHz 9-57V Forward PA5100.004NLT Pulse Electronics 1: ¥631.2 49In Stock	Mfr. Part # PA5100.004NLT Mouser Part # 673-PA5100.004NLT	Pulse Electronics	Power Transformers - Board Mount 27W 11uH 200-700kHz 9-57V Forward Learn More about Pulse Electronics pulse high frequency transformers	Datasheet	49In Stock	Cut Tape ¥631.2 ¥571.4 ¥529.9 ¥513.2 Reel ¥481.7 View ¥451.8 ¥408.6 ¥393.7 ¥388.7 MouseReel Available	Min.: 1 Mult.: 1 : 125	Forward Transformers											PA5100
Power Transformers - Board Mount 27W 11uH 200-700kHz 9-57V Forward PA5100.005NLT Pulse Electronics 1: ¥631.2 2In Stock	Mfr. Part # PA5100.005NLT Mouser Part # 673-PA5100.005NLT	Pulse Electronics	Power Transformers - Board Mount 27W 11uH 200-700kHz 9-57V Forward Learn More about Pulse Electronics pulse high frequency transformers	Datasheet	2In Stock	Cut Tape ¥631.2 ¥571.4 ¥529.9 ¥513.2 Reel ¥480 View ¥455.1 ¥438.5 ¥392 ¥385.4 MouseReel Available	Min.: 1 Mult.: 1 : 125	Forward Transformers											PA5100
Power Transformers - Board Mount 173uH 3kV 15% PA5112.001NLT Pulse Electronics 1: ¥762.4 95In Stock	Mfr. Part # PA5112.001NLT Mouser Part # 673-PA5112.001NLT	Pulse Electronics	Power Transformers - Board Mount 173uH 3kV 15% Learn More about Pulse Electronics pulse high frequency transformers	Datasheet	95In Stock	Cut Tape ¥762.4 ¥689.3 ¥646.1 ¥627.9 Reel ¥598 View ¥518.2 ¥509.9 ¥500 ¥493.3 MouseReel Available	Min.: 1 Mult.: 1 : 120
Power Transformers - Board Mount Flyback Converter Transformer 43-172uH 1A DCR=1.2Ohms 1:2 PH0416NLT Pulse Electronics 1: ¥674.4 91In Stock 1,650On Order	Mfr. Part # PH0416NLT Mouser Part # 673-PH0416NLT	Pulse Electronics	Power Transformers - Board Mount Flyback Converter Transformer 43-172uH 1A DCR=1.2Ohms 1:2 Learn More about Pulse Electronics pulse er11 power transformers	Datasheet	91In Stock 1,650On Order On Order Ship Dates Mfr. #: PH0416NLT Stock: 91 Can Ship Immediately On Order: 600 Expected 11/13/2026 1,050 Expected 2/8/2027 Factory Lead-Time: 15 Weeks	Cut Tape ¥674.4 ¥611.2 ¥569.7 ¥551.5 Reel ¥509.9 View ¥524.9 ¥475 ¥448.5 MouseReel Available	Min.: 1 Mult.: 1 : 150	Flyback Transformers								10 mm	10 mm	12.5 mm	ER11 Platform
Power Transformers - Board Mount TRANSFORMER,ER19 PLANAR, 4 NPB PH0801CNLT Pulse Electronics 1: ¥1,838.7 119In Stock	Mfr. Part # PH0801CNLT Mouser Part # 673-PH0801CNLT	Pulse Electronics	Power Transformers - Board Mount TRANSFORMER,ER19 PLANAR, 4 NPB	Datasheet	119In Stock	Cut Tape ¥1,838.7 ¥1,622.8 ¥1,573 ¥1,494.9 Reel ¥1,250.7 View ¥1,224.2 ¥1,222.5	Min.: 1 Mult.: 1 : 150												PH08XXCNL
Power Transformers - Board Mount 456uH 1.5kV Iso 1CT:1CT EE5 20% PH9084.011NLT Pulse Electronics 1: ¥483.4 562In Stock 1,000Expected 3/24/2027	Mfr. Part # PH9084.011NLT Mouser Part # 673-PH9084.011NLT	Pulse Electronics	Power Transformers - Board Mount 456uH 1.5kV Iso 1CT:1CT EE5 20% Learn More about Pulse Electronics pulse high isolation transformers	Datasheet	562In Stock 1,000Expected 3/24/2027	Cut Tape ¥483.4 ¥395.3 ¥370.4 ¥360.4 Reel ¥284 View ¥348.8 ¥333.9 ¥323.9 ¥270.7 MouseReel Available	Min.: 1 Mult.: 1 : 1,000				1 W		SMD/SMT	Dual Primary Winding	Dual Secondary Winding	8.2 mm	6.6 mm	5.35 mm	PH9084.XXXNLT
Power Transformers - Board Mount WE-UNIT Offline 220uH .21A .29Ohm 7491181012 Wurth Elektronik 1: ¥1,220.8 159In Stock 396On Order	Mfr. Part # 7491181012 Mouser Part # 710-7491181012	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 220uH .21A .29Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	159In Stock 396On Order On Order Ship Dates Mfr. #: 7491181012 Stock: 159 Can Ship Immediately On Order: 264 Expected 11/9/2026 132 Expected 2/12/2027 Factory Lead-Time: 21 Weeks	¥1,220.8 ¥1,074.7 ¥1,018.2 ¥961.7 View ¥903.6 ¥878.7	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V	3 W	250 mA	Through Hole	Single Primary Winding	Single Secondary Winding	15 mm	11 mm	16.8 mm	WE-UNIT
Power Transformers - Board Mount WE-UNIT Offline 175uH .21A .29Ohm 7491181112 Wurth Elektronik 1: ¥1,220.8 102In Stock	Mfr. Part # 7491181112 Mouser Part # 710-7491181112	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 175uH .21A .29Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	102In Stock	¥1,220.8 ¥1,073 ¥1,016.5 ¥960.1 View ¥903.6 ¥878.7	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V	3 W	250 mA	Through Hole	Single Primary Winding	Single Secondary Winding	21.5 mm	15 mm	12 mm	WE-UNIT