| No | Part number | Description ( Function ) | Manufacturers | |
| 2 | LH1550 | HIGH VOLTAGE/ SOLID STATE RELAY OPTOCOUPLER LH1550 HIGH VOLTAGE, SOLID STATE RELAY OPTOCOUPLER FEATURES • Normally Open, Single Pole Single Throw Operation • Control 350 VAC or DC Voltage • Switch 100 mA Loads • LED Control Current, 2.5 mA • Low ON-Resistance, 37 Ω Typ. at 100 mA • Isolation Test Voltage, 3750 VACRMS • Current Limit Protection • Underwriters Lab File # E52744 APPLICATIONS • Telephone |
 Siemens Semiconductor Group |
|
| 1 | LH1550 | (LH1500 - LH1550) High Voltage Optically Coupled Solid High Voltage Solid State Relays General Information FEATURES 3750 Vrms or 5300 Vrms I/O isolation Current-limit protection built-in Linear ac/dc operation High-reliability monolithic receptor Extremely low leakage current (pA) High contact off-impedance (GW) Low power consumption (1 mW—12 mW) Very low switch offset (typically 0.1 mV) Logic compatible Clea |
 Siemens |
|
List of most widely used semiconductors
| Part Number | Function | Manufacturers | |
| 1N4007 | The 1N4007 is a rectification diode that is designed for high-voltage applications, typically up to 1000V. It has a maximum current rating of 1A and a forward voltage drop of around 0.7V. |
 Vishay |
|
| LM317 | This is a popular adjustable voltage regulator. |
 ON Semiconductor |
|
6N137 | LM393 | 2N3906 | 2N2222 | TIP120 | 1N5818 | LM324N | A1015 | SMAJ20CA |
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