ZXY flat air-core inductor coil wound from 0.16 mm enamelled copper wire, 289 turns in a flat, hollow single-layer winding of 20.2 x 12.6 mm outside and 3.5 mm thickness. The 15.6 x 7.36 mm open centre takes a core, a sensing target or nothing at all, and the two lead ends are stripped and tinned for direct soldering. Because there is no magnetic core, the coil has no core loss and no saturation point: it stays linear at high frequency, which is what wireless power, RFID and sensing circuits need. The winding is held by an insulating tape band, and size, turns, wire diameter and lead length can be customised to the application.

ZXY EI42-110V-28.3V (part B2361) is a PCB-mount low-frequency step-down transformer wound on an EI42 core of 0.5 mm H18A electrical steel. Two identical 110 V AC / 60 Hz primary windings (1-6, 2-7) feed two independent 28.3 V AC secondaries (8-9, 13-14): each secondary holds 28.3 V AC ±5% at no load and 21.6 V AC at 70 mA. No-load current stays within 10 mA and no-load loss within 0.8 W, keeping standby consumption low in continuously powered equipment. The body measures 43.5 x 36.3 x 31.0 mm maximum and terminates in rigid 0.8 mm DIP pins; terminals 3, 4, 5, 10 and 12 are cut off. 2UEW-F copper windings on a PBT MB2830 bobbin, taped and vacuum-impregnated, Class B/F insulation, CE / UL / RoHS / CCC compliance. Approval specification 20220922001, edition A/0.

ZXY EI19-Permalloy is a precision-wound audio isolation transformer on a high-permeability permalloy (nickel-iron) core, supplied in a flame-retardant DIP 3+3 pin through-hole package measuring 19.5 x 17.5 x 17.0 mm. Three standard impedance configurations are available - 600:600 (1:1), 600:10K (1:4) and 10K:10K (1:1) - so a single footprint covers line-level and higher-impedance interfacing. The magnetic path transfers voice and data while the primary and secondary windings stay galvanically isolated: ground loops are interrupted, the AC hum caused by system grounding disappears and common-mode interference is rejected, without altering the audio content. Audio band 50 Hz - 20 kHz, dielectric strength 1250 V at 1 mA for 60 s, operating temperature -40 to +125 C, CE and RoHS compliant, produced in an ISO 9001 certified factory.

EI14 vertical audio isolation transformer, 600 Ω : 600 Ω, reference part number ZXY-B2127-2, hard-pin version. 1:1 turn ratio on terminals 1-3 : 4-6 within ±2%, parallel inductance 300 mH ±25% at 1 kHz / 0.25 V, DCR 82 Ω ±15% on the primary and 102 Ω ±15% on the secondary. Insertion loss ≤2 dB max at 1 kHz, frequency response 300 Hz - 3.5 kHz within ±2 dB. Dielectric strength 1000 VAC at 1 mA for 2 s between primary and secondary. Cold-rolled high-permeability silicon steel core, V-0 flame-retardant bobbin, 130 °C / 155 °C dual-insulation wire, vertical through-hole rigid pins. RoHS compliant.

ZXYDU19 is a permalloy audio isolation transformer in a sealed metal case with DIP through-hole pins. Turns ratio 1:1+1+1: one primary and three independent secondaries on a single high-permeability nickel-iron core. Frequency range 10 Hz to 100 kHz at ±0.5 dB; maximum 50 Hz input +6 dBu at 0.2% THD; primary DCR 32 Ω MAX and secondary DCR 63 + 67 + 72 Ω MAX at 25 °C; dielectric strength 1250 V at 1 mA for 60 s. The galvanic barrier blocks DC and ground potential differences between circuits and removes the AC hum caused by ground loops, while attenuating external interference in both balanced and unbalanced lines. Case 47.5 x 29.0 x 24.0 mm with 2.5 / 30.7 / 2.5 mm pin rows for direct PCB mounting.

EI66*28 encapsulated audio isolation transformer for audio amplifier and low-frequency isolation duty. Wound for a 220 V AC, 50 Hz primary with a 23 V ±5% no-load output on the blue-blue winding, 55 mA MAX no-load current and 4.5 W MAX no-load loss. H50N electrical steel EI66 laminated core, flame-retardant Nylon 101 bobbin, vacuum varnish impregnated and fully encapsulated, zinc-plated steel mounting bracket, 250 ±10 mm silicone lead wires with tinned copper terminations. AC 1500 V primary-secondary and AC 1000 V winding-to-core dielectric strength, insulation resistance ≥100 MΩ MIN. ZXY Part No. B2348, specification 20230803003.

The EI-4120W-5409 is a chassis-mount power transformer with a dual 110 V primary that can be wired for either 110 V or 220 V mains, and a centre-tapped secondary giving 12 V-0-12 V or 24 V at 250 mA. It is built on an EI-41 silicon steel lamination in a flame-retardant bobbin, sealed in a metal cover with two mounting flanges, and terminated in eight 6.3 x 0.8 mm solder tabs arranged 4 + 4.

The EE25-4.0H is a PCB-mountable audio isolation transformer built on the EE25 in-line bobbin platform. A 1:1:1:1 turns ratio and four matched 4.0 H windings give the part galvanic isolation between circuits, rejection of the AC hum created by system grounding, and clean coupling of balanced or unbalanced audio signals across the 20 Hz to 20 kHz range. It is used for voice and data coupling, for breaking ground loops between pieces of equipment, and for providing an isolated signal output.

The ZXY-3108 is a 12:1 audio isolation transformer built on a permalloy core and sealed in a mu-metal case. It combines a 140 kOhm primary impedance with a 12:1 (N1:N2) turns ratio to provide galvanic isolation and effective common-mode noise rejection in high-impedance, high-fidelity audio signal paths. The unit is supplied as a 31.0 mm x 22.0 mm vertical-mount body with a 4 + 4 pin arrangement for through-hole PCB layouts.

The ZXY-ED8X10-2.0H is a small glue-sealed SMD audio isolation transformer built on an ED8 x 10 laminated core. Two matched windings give 1:1 galvanic isolation between a 600 ohm line port and a 400 ohm device port, with a flat response across the 300 Hz to 4 kHz band, for board-level use in audio, voice and communication equipment.

The ZXY-EE25 is a compact audio isolation transformer built on a high-grade EE25 silicon-steel core and terminated with multi-color flying leads. With a 1:4 turns ratio, an inductance range of 65 mH to 900 mH at 1 kHz and pre-stripped, tinned copper lead tips, it provides impedance matching, galvanic signal isolation and ground-loop noise rejection in professional audio, broadcast, communication and industrial audio equipment.

ZXYAUDIO EE24 is a low frequency audio transformer for signal coupling and isolation in audio equipment. It winds 100% pure copper magnet wire on a high-permeability Ni-steel lamination core, wrapped in high-temperature Mylar tape, and terminates on standard 3 + 4 through-hole DIP pins. Every unit is 100% electrically tested. Electrical specification, dimensions and other parameters are customized to the application.