The Z566M is a large Nixie tube manufactured by RFT. It is pin compatible with the ZM1040 but differs in design, featuring a flatter top and a top-evacuation design, though some earlier units were evacuated from the bottom. In some instances, Z566Ms have even been rebranded and sold as ZM1040s. A variant without the pre-applied red filter was marketed as the Z5660M.
The Z566M was primarily utilized in laboratory equipment such as voltmeters and frequency counters. Its large size also made it well-suited for devices designed for use in educational settings, such as schools. A Nixie tube featuring various symbols, designed to complement the Z566M/Z5660M, was marketed under the names Z567M and Z5670M.
Key Specifications
| Property | Description |
|---|---|
| Manufacturer | RFT |
| Time period | Late 1960s |
| Digit height | 30mm |
| Envelope diameter | 29.2mm |
| Envelope height | 62mm |
| Socket | B13B |
References
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