| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| HC5503T | Balanced PBX / Key System SLIC, Subscriber Line Interface Circuit | Intersil-Corporation | - | - | - | - | 37 K |
| S503T | RF MOSMIC (MOS Monolithic Integrated Circuit) transistor | Vishay-Telefunken | SOT143 | - | - | - | 99 K |
| S503TR | RF MOSMIC (MOS Monolithic Integrated Circuit) transistor | Vishay-Telefunken | SOT143R | - | - | - | 99 K |
| S503TRW | RF MOSMIC (MOS Monolithic Integrated Circuit) transistor | Vishay-Telefunken | SOT343R | - | - | - | 99 K |
| SG1503T | Voltage Reference - Precision | Microsemi-Corporation | - | - | - | - | 36 K |
| SG1503T/883B | Voltage Reference - Precision | Microsemi-Corporation | - | - | - | - | 36 K |
| SG1503T/DESC | Voltage Reference - Precision | Microsemi-Corporation | - | - | - | - | 36 K |
| SG2503T | Voltage Reference - Precision | Microsemi-Corporation | - | - | - | - | 36 K |
| UPA503T-T1 | Silicon transistor | NEC-Electronics-Inc- | 5pin Mini Mold | - | - | - | 60 K |
| UPA503T-T2 | Silicon transistor | NEC-Electronics-Inc- | 5pin Mini Mold | - | - | - | 60 K |
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