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Telecom Transformers

Bourns Telecom Transformers include LAN transformers, surface-mount chip inductors, power chokes, chip beads, chip bead arrays, and radial-leaded and axial-leaded inductors. This Bourns product line also includes AEC-Q200-compliant transformers for automotive uses.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	Mounting Style
	Audio Transformers / Signal Transformers LAN Transformer/CMC,12PIN,100Base,SGL,4.0kVAC, -40 to 105C SM91078L-E Bourns 1: £8.17 1,145In Stock	Mfr. Part No. SM91078L-E Mouser Part No 652-SM91078L-E	Bourns	Audio Transformers / Signal Transformers LAN Transformer/CMC,12PIN,100Base,SGL,4.0kVAC, -40 to 105C Learn More about Bourns sm91078l transformer	Datasheet	1,145In Stock	Cut Tape £8.17 £8.16 £6.75 £6.49 Reel £5.12 View £6.22 £6.04 £4.12 MouseReel Available	Min.: 1 Mult.: 1 : 400
	Power Transformers - Board Mount BMS transformer/CMC,12PIN,DUAL, 4.3KVDC SM91509AL-E Bourns 1: £3.53 1,938In Stock	Mfr. Part No. SM91509AL-E Mouser Part No 652-SM91509AL-E	Bourns	Power Transformers - Board Mount BMS transformer/CMC,12PIN,DUAL, 4.3KVDC Learn More about Bourns bms transformers	Datasheet	1,938In Stock	Cut Tape £3.53 £3.28 £3.11 £3.01 View Reel £2.52 £2.92 £2.80 £2.71 £2.52 £2.52 MouseReel Available	Min.: 1 Mult.: 1 : 2,000		PCB Mount
	Audio Transformers / Signal Transformers LAN 10/100 Tin Potted PT61017PEL Bourns 1: £1.18 23,945In Stock	Mfr. Part No. PT61017PEL Mouser Part No 652-PT61017PEL	Bourns	Audio Transformers / Signal Transformers LAN 10/100 Tin Potted Learn More about Bourns power supply solutions	Datasheet	23,945In Stock	Cut Tape £1.18 £1.07 £0.995 £0.969 Reel £0.78 View £0.934 £0.773 MouseReel Available	Min.: 1 Mult.: 1 : 600
	Audio Transformers / Signal Transformers XFMER 1.2A POE SM51625EL Bourns 1: £1.99 11,068In Stock	Mfr. Part No. SM51625EL Mouser Part No 652-SM51625EL	Bourns	Audio Transformers / Signal Transformers XFMER 1.2A POE Learn More about Bourns SM51625EL lan transformer	Datasheet	11,068In Stock	Cut Tape £1.99 £1.82 £1.66 £1.59 Reel £1.48 View £1.44 £1.38 £1.34 £1.30 MouseReel Available	Min.: 1 Mult.: 1 : 350
	Audio Transformers / Signal Transformers 350uHmin 1CT:1CT OP -40C to +85C PT61018PEL Bourns 1: £1.00 4,156In Stock 6,600Expected 29/12/2026	Mfr. Part No. PT61018PEL Mouser Part No 652-PT61018PEL	Bourns	Audio Transformers / Signal Transformers 350uHmin 1CT:1CT OP -40C to +85C Learn More about Bourns power supply solutions	Datasheet	4,156In Stock 6,600Expected 29/12/2026	Cut Tape £1.00 £0.917 £0.856 £0.826 Reel £0.766 View £0.796 £0.724 £0.697 £0.685 MouseReel Available	Min.: 1 Mult.: 1 : 600
	Audio Transformers / Signal Transformers 350uHmin. .50uHmax. OP -40C to +85C PT61020EL Bourns 1: £2.02 16,268In Stock	Mfr. Part No. PT61020EL Mouser Part No 652-PT61020EL	Bourns	Audio Transformers / Signal Transformers 350uHmin. .50uHmax. OP -40C to +85C Learn More about Bourns power supply solutions	Datasheet	16,268In Stock	Cut Tape £2.02 £1.83 £1.68 £1.61 Reel £1.46 View £1.53 £1.41 £1.38 £1.36 MouseReel Available	Min.: 1 Mult.: 1 : 700
	Audio Transformers / Signal Transformers MAGNETICS LAN TRANSFORMER PT61022XEL Bourns 1: £3.42 1,064In Stock	Mfr. Part No. PT61022XEL Mouser Part No 652-PT61022XEL	Bourns	Audio Transformers / Signal Transformers MAGNETICS LAN TRANSFORMER Learn More about Bourns power supply solutions	Datasheet	1,064In Stock	Cut Tape £3.42 £2.82 £2.76 £2.67 Reel £2.29 View £2.42 £2.36 £2.21	Min.: 1 Mult.: 1 : 500
	Audio Transformers / Signal Transformers LAN Transformer 10/100/1000 Base-T SM51589PEL Bourns 1: £2.16 1,221In Stock 17,150On Order	Mfr. Part No. SM51589PEL Mouser Part No 652-SM51589PEL	Bourns	Audio Transformers / Signal Transformers LAN Transformer 10/100/1000 Base-T Learn More about Bourns SM51589PEL	Datasheet	1,221In Stock 17,150On Order On Order Ship Dates Mfr. No: SM51589PEL Stock: 1,221 Can Dispatch Immediately On Order: 4,900 Expected 09/10/2026 12,250 Expected 08/12/2026 Factory Lead Time: 20 Weeks	Cut Tape £2.16 £1.96 £1.81 £1.74 Reel £1.62 £1.60 MouseReel Available	Min.: 1 Mult.: 1 : 350
	Audio Transformers / Signal Transformers T1/E1 Potted SM75057PEL Bourns 3,600: £1.34 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. SM75057PEL Mouser Part No 652-SM75057PEL	Bourns	Audio Transformers / Signal Transformers T1/E1 Potted Learn More about Bourns SM7505xPEL T1E1 transformers	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape £1.34 £1.21	Min.: 3,600 Mult.: 600 : 600