| Manufacturer | Part Number | Description |
|---|---|---|
Champion |
K1523BA | Voltage Controlled Crystal Oscillators |
| M-Tron | K1523BA | Voltage Controlled Crystal Oscillators |
| Unknown Manufacturer | K1523 | MOSFET |
| Unknown Manufacturer | 2SK1523 | MOSFET |
Motorola Semiconductor (now NXP Semiconductors) |
K1523AA | Voltage Controlled Crystal Oscillators |
