Ground Loop Audio Isolator Audio Transformer PCBA Permalloy Nickel Alloy 600:600 600:10k 10k:10k
The same part is available in five impedance combinations — 600:600, 600:600 (1+1:1+1), 10k:10k, 600:10k and 10k:600 — each with its own turns ratio, winding inductance and DC resistance, so a balanced or unbalanced line can be matched without adding active circuitry. A potted case and a 1250V dielectric withstand rating keep the isolation intact in service. The winding sits in a potted six-pin through-hole case.
Application Specifications
| Parameter | Specification |
| Model | ZXY2207 |
| Type | PCB-mount audio isolation transformer, permalloy core |
| Core | Permalloy (nickel alloy), high permeability |
| Turns ratio tolerance | ±2% |
| DC resistance tolerance | ±15% at 25°C |
| Dielectric withstand (Hi-Pot) | 1250V, 1mA, 60 seconds |
| Operating temperature | -40°C to +85°C |
| Storage temperature | -45°C to +125°C |
| Relative humidity | 5% to 95% |
| Rated power | To be confirmed |
| Pinout | Pins 1-3 primary, pins 4-6 secondary |
| Case outline | 0.866 × 0.721 (figures per the datasheet drawing; the sheet prints no unit) |
| Mounting | PCB through-hole, 6 pins |
| Certification | CE (certificate AT18230SC301249), ISO 9001:2015; RoHS declared on the product listings |
| Lead time | From stock, or 3 weeks |
Impedance variants (per the ZXY2207 datasheet):
| Variant | Turns ratio (1-3 : 4-6) | LS 1-3 min | LS 4-6 min | DCR 1-3 | DCR 4-6 | Hi-Pot |
| 600:600 | 1:1 | 6.0H | 6.0H | 30Ω | 30Ω | 1250V |
| 600:600 (1+1:1+1) | 1+1:1+1 | 14.0H | 14.0H | 75Ω | 75Ω | 1250V |
| 10K:10K | 1:1 | 105H | 105H | 600Ω | 600Ω | 1250V |
| 600:10K | 1:4 | 8.0H | 110H | 37Ω | 710Ω | 1250V |
| 10K:600 | 4:1 | 100H | 6.0H | 558Ω | 40Ω | 1250V |
Product Features
● Permalloy (Nickel Alloy) Core: High-permeability core for low-level audio signals.
● Five Impedance Combinations: 600:600, 600:600 (1+1:1+1), 10k:10k, 600:10k and 10k:600.
● Turns Ratio Held to ±2%: Winding ratio tolerance across the range.
● Inductance 6.0H to 105H: Primary and secondary inductance specified per variant.
● DC Resistance 30Ω to 710Ω: Per variant, ±15% at 25°C.
● 1250V Dielectric Withstand: Tested at 1mA for 60 seconds.
● Wide Temperature Range: Operating -40°C to +85°C, storage -45°C to +125°C.
● 6-Pin PCB Mount: Pins 1-3 primary, pins 4-6 secondary.
● Potted Construction: Moisture-proof, for 5% to 95% relative humidity.
● Marked on the Case: each unit carries its impedance combination and the ZXY2207 marking.
● Storage and Humidity: -45°C to +125°C storage, 5% to 95% relative humidity.
Product Advantages
● Breaks ground loops: a passive galvanic break between source and load removes the hum caused by ground potential differences.
● Matched without active circuitry: five impedance combinations let a 600Ω or 10kΩ line be matched in either direction.
● Predictable performance: the turns ratio is held to ±2% and DC resistance to ±15%.
● Permalloy core: high permeability keeps the core effective at the low signal levels found on line-level audio.
● Robust isolation: a 1250V dielectric withstand between windings, tested at 1mA for 60 seconds.
● Sealed against the environment: potted construction holds its performance from 5% to 95% relative humidity and over -40°C to +85°C.
● Easy to integrate: a compact through-hole footprint with a standard 6-pin outline.
● Low-level signal integrity: a permalloy core keeps the magnetising current small.
Application scenario
Application
Ground loop isolation
Removing hum between mixers, laptops, phones and other audio sources.
Balanced-to-unbalanced conversion
Interfacing an unbalanced consumer output with a balanced professional input, and the reverse.
Impedance matching
Bridging 600Ω and 10kΩ line levels.
Installed sound systems
Signal distribution between racks and zones.
Board-level isolation
Audio interfaces, mixing consoles and isolator modules.
Consumer device feeds
Breaking the ground path when a laptop or phone is connected to a mixer.
Product Details Showcase
Quality & Testing Assurance