Audio Transformers / Signal Transformers

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High Isolation Ethernet Magnetic Transformers

Pulse Electronics High Isolation Ethernet Magnetic Transformers meet IEEE 802.3 specifications and feature a compact footprint for use in space-restrictive appliances. These transformers offer high isolation for robust applications that require more isolation than traditional LAN applications. They provide safety isolation of up to 6kV and are ideal for both industrial and medical applications. The transformers come with multiple options for working voltages, isolation voltages, and surge/impulse. Pulse Electronics High Isolation Ethernet Magnetic Transformers also meet functional, basic, supplementary, and reinforced insulation requirements. Typical applications include 2-phase and 3-phase electricity meters, battery management solutions, AC motor drives, MRI machines, CPAP machines, and dialysis equipment.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Termination Style	Frequency Range	Inductance	Primary Impedance	Secondary Impedance	Isolation Voltage	Minimum Operating Temperature	Maximum Operating Temperature	Number of Channels	Package/Case	Length	Width	Height	Series	Packaging
Audio Transformers / Signal Transformers 10/100Base-T SMD 1-Port HX1178NL Pulse Electronics 1: HK$66.66 417In Stock	Mfr. Part No. HX1178NL Mouser Part No 673-HX1178NL	Pulse Electronics	Audio Transformers / Signal Transformers 10/100Base-T SMD 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	417In Stock	HK$66.66 HK$56.80 HK$53.02 HK$49.07 View HK$46.20 HK$44.22 HK$44.06 HK$43.40 Quote	Min.: 1 Mult.: 1	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		25.4 mm	12.83 mm	6.22 mm		Tube
Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH 1-port HX5004ENL Pulse Electronics 1: HK$61.49 1,366In Stock	Mfr. Part No. HX5004ENL Mouser Part No 673-HX5004ENL	Pulse Electronics	Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH 1-port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	1,366In Stock	HK$61.49 HK$46.61 HK$44.63 HK$44.31 View HK$37.98 HK$37.73 HK$37.24	Min.: 1 Mult.: 1	LAN Transformers	Module	SMD/SMT	1 MHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		17.5 mm	12.2 mm	5.72 mm	1000Base-T	Tube
Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH .65Ohms 2-Port HX5014NLT Pulse Electronics 1: HK$148.95 719In Stock	Mfr. Part No. HX5014NLT Mouser Part No 673-HX5014NLT	Pulse Electronics	Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH .65Ohms 2-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	719In Stock	Cut Tape HK$148.95 HK$125.77 HK$118.53 HK$112.86 Reel HK$102.67 View HK$110.23 HK$94.86 MouseReel Available	Min.: 1 Mult.: 1 : 250	LAN Transformers	Module	SMD/SMT	1 MHz to 100 MHz				1.5 kV	- 40 C	+ 85 C	Single		27.813 mm	15.367 mm	7.239 mm	HX5014	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 1-Port HX1148NLT Pulse Electronics 1: HK$71.51 1,224In Stock	Mfr. Part No. HX1148NLT Mouser Part No 673-HX1148NLT	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	1,224In Stock	Cut Tape HK$71.51 HK$61.49 HK$59.02 HK$57.21 Reel HK$53.10 View HK$55.40 HK$48.00 HK$45.46 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,200 : 300	LAN Transformers	Module	SMD/SMT	1 MHz to 100 MHz	350 uH	1 Ohms	1 Ohms	1.5 kV	- 40 C	+ 85 C	Single		25.4 mm	9.91 mm	6.22 mm	HX	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 120uH 1500V T/R=1 2% DC=600mA HX6164NLT Pulse Electronics 1: HK$44.80 683In Stock	Mfr. Part No. HX6164NLT Mouser Part No 673-HX6164NLT	Pulse Electronics	Audio Transformers / Signal Transformers 120uH 1500V T/R=1 2% DC=600mA Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	683In Stock	Cut Tape HK$44.80 HK$39.87 HK$38.31 HK$37.07 Reel HK$33.87 View HK$35.02 HK$32.72 HK$27.70 MouseReel Available	Min.: 1 Mult.: 1 : 300	PoE Transformers	Module	SMD/SMT		120 uH			1.5 kVrms	- 40 C	+ 85 C	Single		15.24 mm	7.62 mm	8.64 mm	HX	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH .65Ohms 1-Por H1260FNL Pulse Electronics 1: HK$36.83 796In Stock NRND	Mfr. Part No. H1260FNL Mouser Part No 673-H1260FNL NRND	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH .65Ohms 1-Por Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	796In Stock	HK$36.83 HK$34.11 HK$33.13 HK$32.39 View HK$31.40 HK$28.93 HK$24.99	Min.: 1 Mult.: 1	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz	350 uH			1.5 kV	0 C	+ 70 C	Single	SMT	12.7 mm	9.53 mm	6 mm		Tube
Audio Transformers / Signal Transformers 1000Base-T NonPoE 1-Port SMD 350uH HX5062FNL Pulse Electronics 1: HK$42.58 600In Stock NRND	Mfr. Part No. HX5062FNL Mouser Part No 673-HX5062FNL NRND	Pulse Electronics	Audio Transformers / Signal Transformers 1000Base-T NonPoE 1-Port SMD 350uH Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	600In Stock	HK$42.58 HK$36.83	Min.: 1 Mult.: 1	LAN Transformers	Module	SMD/SMT	1 MHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		17.53 mm	16 mm	5.715 mm	HX	Tube
Audio Transformers / Signal Transformers 1500V 350uH 8mA 2% HX6135HL Pulse Electronics 1: HK$128.81 270In Stock	Mfr. Part No. HX6135HL Mouser Part No 673-HX6135HL	Pulse Electronics	Audio Transformers / Signal Transformers 1500V 350uH 8mA 2% Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	270In Stock	HK$128.81 HK$113.93 HK$109.08 HK$105.63 HK$89.68	Min.: 1 Mult.: 1		Module	SMD/SMT		350 uH			1500 Vrms	- 40 C	+ 85 C			27.94 mm	7.55 mm	8.33 mm	HX	Tube
Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH .75Ohms 2-Port HX1305NLT Pulse Electronics 1: HK$79.57 22In Stock	Mfr. Part No. HX1305NLT Mouser Part No 673-HX1305NLT	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH .75Ohms 2-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	22In Stock	Cut Tape HK$79.57 HK$62.55 HK$60.01 HK$58.20 Reel HK$53.68 View HK$55.57 HK$53.18 HK$52.69 Quote	Min.: 1 Mult.: 1 : 200	LAN Transformers	Module	SMD/SMT						- 40 C	+ 85 C	Single						Reel, Cut Tape
Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 2-Port HX1294FNLT Pulse Electronics 1: HK$70.77 176In Stock	Mfr. Part No. HX1294FNLT Mouser Part No 673-HX1294FNLT	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 2-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	176In Stock	Cut Tape HK$70.77 HK$62.14 HK$59.60 HK$55.98 Reel HK$53.92 View HK$54.58 HK$52.20 HK$51.13 Quote	Min.: 1 Mult.: 1 : 350	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz					- 40 C	+ 85 C	Dual		18.44 mm	13.67 mm	5.87 mm	HX	Reel, Cut Tape
Audio Transformers / Signal Transformers MDL,DUAL,1GP, 1:1, HF, SMT T&R HX6136HLT Pulse Electronics 1: HK$133.82 996In Stock	Mfr. Part No. HX6136HLT Mouser Part No 673-HX6136HLT	Pulse Electronics	Audio Transformers / Signal Transformers MDL,DUAL,1GP, 1:1, HF, SMT T&R Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	996In Stock	Cut Tape HK$133.82 HK$105.71 HK$101.43 HK$98.23 Reel HK$80.23 View HK$95.11 HK$80.15 HK$80.06 MouseReel Available	Min.: 1 Mult.: 1 : 250																	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers MDL,DUAL,1GD, 1:1, HF,SMT T&R HX5020HLT Pulse Electronics 1: HK$133.82 1,194In Stock	Mfr. Part No. HX5020HLT Mouser Part No 673-HX5020HLT	Pulse Electronics	Audio Transformers / Signal Transformers MDL,DUAL,1GD, 1:1, HF,SMT T&R Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	1,194In Stock	Cut Tape HK$133.82 HK$105.71 HK$101.43 HK$98.23 Reel HK$76.86 View HK$95.11 HK$76.36 HK$76.28 MouseReel Available	Min.: 1 Mult.: 1 : 250																	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 1500V 350uH 8mA 2% HX5020HL Pulse Electronics 1: HK$121.33 279In Stock	Mfr. Part No. HX5020HL Mouser Part No 673-HX5020HL	Pulse Electronics	Audio Transformers / Signal Transformers 1500V 350uH 8mA 2% Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	279In Stock	HK$121.33 HK$107.35 HK$104.48 HK$99.79 HK$87.05	Min.: 1 Mult.: 1		Module	SMD/SMT		350 uH			1500 Vrms	- 40 C	+ 85 C			27.94 mm	7.55 mm	8.33 mm	HX	Tube
Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 1-Port HX0068ANL Pulse Electronics 1: HK$59.84 3,338In Stock	Mfr. Part No. HX0068ANL Mouser Part No 673-HX0068ANL	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	3,338In Stock	HK$59.84 HK$51.62 HK$42.99 HK$41.76 HK$40.85	Min.: 1 Mult.: 1 Max.: 160	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		12.7 mm	9.652 mm	2.083 mm	100Base-TX	Tube
Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH 1-Port HX1188FNLT Pulse Electronics 1: HK$31.56 14,808In Stock	Mfr. Part No. HX1188FNLT Mouser Part No 673-HX1188FNLT	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	14,808In Stock	Cut Tape HK$31.56 HK$28.61 HK$26.14 HK$25.48 Reel HK$20.39 View HK$22.93 HK$22.19 HK$19.65 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,400 : 600	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		12.7 mm	9.65 mm	5.97 mm	HX	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH 1-Port HX1188NLT Pulse Electronics 1: HK$30.66 11,579In Stock 13,200Expected 1/3/2027	Mfr. Part No. HX1188NLT Mouser Part No 673-HX1188NLT	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX SMD NonPoE 350uH 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	11,579In Stock 13,200Expected 1/3/2027	Cut Tape HK$30.66 HK$27.78 HK$25.48 HK$24.66 Reel HK$23.59 View HK$23.59 HK$22.36 HK$21.87 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,400 : 600	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		12.7 mm	9.53 mm	5.97 mm	HX	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH .65Ohms 1-Por HX5004NLT Pulse Electronics 1: HK$81.38 5,414In Stock	Mfr. Part No. HX5004NLT Mouser Part No 673-HX5004NLT	Pulse Electronics	Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH .65Ohms 1-Por Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	5,414In Stock	Cut Tape HK$81.38 HK$71.02 HK$68.14 HK$66.01 Reel HK$60.09 View HK$63.95 HK$58.12 HK$57.46 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,200 : 300	LAN Transformers	Module	SMD/SMT	1 MHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		17.53 mm	16 mm	5.51 mm	HX5004	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 1000BaseT SMD PoE 325uH 1-Port HX5008NL Pulse Electronics 1: HK$98.72 6,284In Stock	Mfr. Part No. HX5008NL Mouser Part No 673-HX5008NL	Pulse Electronics	Audio Transformers / Signal Transformers 1000BaseT SMD PoE 325uH 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	6,284In Stock	HK$98.72 HK$86.64 HK$75.62 HK$73.82 HK$72.66	Min.: 1 Mult.: 1 Max.: 140	LAN Transformers	Module	SMD/SMT	1 MHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		13.64 mm	13.64 mm	5.72 mm	HX	Tube
Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 325uH 1-Port HX5008NLT Pulse Electronics 1: HK$63.71 4,105In Stock	Mfr. Part No. HX5008NLT Mouser Part No 673-HX5008NLT	Pulse Electronics	Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 325uH 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	4,105In Stock	Cut Tape HK$63.71 HK$56.06 HK$53.84 HK$52.11 Reel HK$50.64 View HK$50.72 HK$50.06 HK$48.17 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,400 : 350	LAN Transformers	Module	SMD/SMT	1 MHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		13.64 mm	18.8 mm	5.72 mm	HX	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH 1-Port HX5084NL Pulse Electronics 1: HK$62.06 4,055In Stock	Mfr. Part No. HX5084NL Mouser Part No 673-HX5084NL	Pulse Electronics	Audio Transformers / Signal Transformers 1000BaseT SMD NonPoE 350uH 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	4,055In Stock	HK$62.06 HK$53.27 HK$50.47 HK$48.58 HK$46.85	Min.: 1 Mult.: 1 Max.: 120	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		0.6 in	0.3 in	0.163 in	Discrete LAN	Tube
Audio Transformers / Signal Transformers 1000Base-T NonPoE 350uH .65Ohms 1-Port HX5120NL Pulse Electronics 1: HK$151.17 1,818In Stock 2,730Expected 9/12/2026	Mfr. Part No. HX5120NL Mouser Part No 673-HX5120NL	Pulse Electronics	Audio Transformers / Signal Transformers 1000Base-T NonPoE 350uH .65Ohms 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	1,818In Stock 2,730Expected 9/12/2026	HK$151.17 HK$137.44 HK$130.45 HK$126.92 HK$123.63	Min.: 1 Mult.: 1 Max.: 120	LAN Transformers	Module	SMD/SMT	100 MHz	350 uH			1.5 kV	- 40 C	+ 85 C	Single		16.51 mm	9.14 mm	2.08 mm	1000Base-T	Tube
Audio Transformers / Signal Transformers MDL,SIN,1GD,1:1,SMT TR NPB HX5120NLT Pulse Electronics 1: HK$137.52 1,701In Stock 6,000Expected 10/2/2027	Mfr. Part No. HX5120NLT Mouser Part No 673-HX5120NLT	Pulse Electronics	Audio Transformers / Signal Transformers MDL,SIN,1GD,1:1,SMT TR NPB Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	1,701In Stock 6,000Expected 10/2/2027	Cut Tape HK$137.52 HK$119.27 HK$111.13 HK$108.09 View Reel HK$96.67 HK$105.22 HK$100.61 HK$98.31 HK$96.67 Quote MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,000 : 1,000	LAN Transformers		SMD/SMT	100 MHz	350 uH	100 Ohms		1.5 kV	- 40 C	+ 85 C	Single		16.51 mm	9.14 mm	2.08 mm	HX	Reel, Cut Tape, MouseReel
Audio Transformers / Signal Transformers 100Base-TX SMD PoE 350uH .65Ohms 1-Port H2019FNL Pulse Electronics 1: HK$61.07 321In Stock NRND	Mfr. Part No. H2019FNL Mouser Part No 673-H2019FNL NRND	Pulse Electronics	Audio Transformers / Signal Transformers 100Base-TX SMD PoE 350uH .65Ohms 1-Port Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	321In Stock	HK$61.07 HK$52.36 HK$45.54 HK$44.14 View HK$42.66 HK$41.84 HK$41.02 Quote	Min.: 1 Mult.: 1	LAN Transformers	Module	SMD/SMT	100 kHz to 100 MHz	350 uH			1.5 kV	0 C	+ 70 C	Single	SMT	12.7 mm	9.53 mm	6 mm		Tube
Audio Transformers / Signal Transformers MDL SIN 1GD 1:1 5K FUNCTUNIONAL SMD H5187NL Pulse Electronics 1: HK$77.60 280In Stock	Mfr. Part No. H5187NL Mouser Part No 673-H5187NL	Pulse Electronics	Audio Transformers / Signal Transformers MDL SIN 1GD 1:1 5K FUNCTUNIONAL SMD Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	280In Stock	HK$77.60 HK$65.68 HK$62.97 HK$60.99 View HK$59.10 HK$56.31 HK$52.20	Min.: 1 Mult.: 1	Signal Transformers		SMD/SMT		350 uH			5 kV	0 C	+ 70 C	Single		18.5 mm	15.34 mm	9.77 mm		Tube
Audio Transformers / Signal Transformers 100BaseTX 350uH 1Port IsolVolt 1.5kV HX1098NL Pulse Electronics 1: HK$39.54 812In Stock 1,240Expected 12/10/2026	Mfr. Part No. HX1098NL Mouser Part No 673-HX1098NL	Pulse Electronics	Audio Transformers / Signal Transformers 100BaseTX 350uH 1Port IsolVolt 1.5kV Learn More about Pulse Electronics pulse ethernet transformers	Datasheet	812In Stock 1,240Expected 12/10/2026	HK$39.54 HK$34.61 HK$29.67 HK$29.10	Min.: 1 Mult.: 1 Max.: 160	LAN Transformers	Module	SMD/SMT		350 uH			1.5 kV	- 40 C	+ 85 C	Single		12.7 mm	9.65 mm	4.01 mm	100Base-TX	Tube