| Компонент | Описание | Производитель | |
| XR72-18 | Planar zener diode. Zener voltage Vz = 16.22-18.33 V. Zener current Iz = 5 mA. Power dissipation Pt = 500 mW. |
Shanghai Sunrise Electronics |
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| XR72-18R | Planar zener diode. Zener voltage Vz = 16.22-17.06 V. Zener current Iz = 5 mA. Power dissipation Pt = 500 mW. |
Shanghai Sunrise Electronics |
|
| XR72-18S | Planar zener diode. Zener voltage Vz = 16.82-17.70 V. Zener current Iz = 5 mA. Power dissipation Pt = 500 mW. |
Shanghai Sunrise Electronics |
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| XR72-18T | Planar zener diode. Zener voltage Vz = 17.42-18.33 V. Zener current Iz = 5 mA. Power dissipation Pt = 500 mW. |
Shanghai Sunrise Electronics |