ZXY1806 Low Frequency Audio Transformer - Toroidal Autotransformer, 2+3 Pin DIP, Epoxy Potted, 600:600 / 600:10K / 10K:10K Impedance Ratios, CCC CE RoHS UL

1. Product Name

ZXY1806 low-frequency audio transformer. Toroidal copper coil, autotransformer configuration, 2+3 pin DIP layout, epoxy-potted black housing with a laser-silkscreened faceplate in 600:600, 600:10K and 10K:10K.

Overview. The body is a potted black housing carrying the winding, with DIP pins on the bottom face for through-hole soldering. Geometry is confirmed across four views: the top face carries the silkscreen, the front view shows the two-pin row, the side view shows the body depth, and the bottom view shows the 2+3 pin arrangement together with the potting structure.

Input is taken from pins 1-2 and output from pins 3-5. The two groups sit on opposite edges of the bottom face rather than in a single row, so the primary and secondary side of a circuit are physically separated at the board interface.

2. Feature

Toroidal coil structure. wound with copper wire

Autotransformer coil number. single-phase design

Multiple impedance ratios. 600:600, 600:10K and 10K:10K

2+3 pin configuration. pins 1-2 as input and pins 3-5 as output

DIP through-hole mounting. with tinned copper pins

High-grade epoxy resin potting. for encapsulation and environmental sealing

Clear laser silkscreen marking. for durable model and ratio identification

Low-frequency transformer. intended for electronic equipment

Customizable electrical specification. matched to the target circuit

Compact potted body. for direct PCB assembly

Carton packaging. for bulk shipment

Input and output are separated across two rows of the body — two pins for the input side and three pins for the output side — which keeps the primary and secondary connections distinct during assembly. The body is a potted black housing with DIP pins on the bottom face for through-hole soldering.

3. Advantage

One package family, several ratios. 600:600, 600:10K and 10K:10K share the same body and pin layout, so one part number covers more than one interface and the BOM stays short.

Epoxy potting as a barrier. the winding is sealed against moisture, dust and mechanical handling rather than relying on an open frame.

Marking that survives service life. the laser-silkscreened faceplate keeps the model and the impedance ratio legible after potting, so a unit in the field can still be identified.

Solderable terminations. tinned copper pins take solder predictably in through-hole assembly without a pre-tinning step.

Specification matched to the circuit. the electrical specification is supplied to order, so the part can be built for a defined interface instead of being trimmed to fit one.

Compact footprint. the potted body is sized for space-constrained PCB layouts.

Consistent handling across versions. a common potted body and pin layout across the impedance versions keeps assembly and incoming inspection uniform.

The potting is the part of the construction that a buyer is least likely to see and most likely to depend on. An open winding collects dust and moisture over years of service; a potted one does not. The same reasoning applies to the faceplate: once the unit is soldered in place, the printed ratio is the only thing left that identifies it, which is why the marking is laser-silkscreened rather than applied as a paper label.

4. Application

Audio equipment and electronic devices. the primary usage defined for this model.

PCB-level signal transformers. the potted through-hole body integrates directly into board assemblies.

Low-frequency audio signal paths. suited to circuits operating in the low-frequency audio band.

Custom circuit designs. electrical specification supplied to order for specific projects.

On a board the part sits at the point where two signal sections meet, and the 2+3 pin layout keeps the two sides on their own pins. Because the specification is customized, the same body can be supplied for a different interface in the same project, which is the practical reason for offering three impedance ratios on one package.

5. Application Specifications

The tables below reproduce the model attributes declared for the ZXY1806, followed by the pin configuration and construction details shown in the product artwork.

5.1 Model attributes

5.2 Pin configuration and construction

6. Quality & Testing Assurance

The ZXY1806 is manufactured to verified safety and environmental standards and carries the following declared marks.