| Q3 | MMBT4401LT1G | NPN transistor, base/emitter/collector |
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| U1 | OS1200MW-A1 | DIODE, IR EMITTING, 38 KHZ, ANGLE OF HALF TRANSMISSION DISTANCE +/-45DEG/C | Vishay / Small Signal & Opto Products (SSP) TSOP4838 |
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| U2 | IRM-3638J7 | DIODE, IR EMITTING, 38 KHZ, ANGLE OF HALF TRANSMISSION DISTANCE +/-45DEG/C | Vishay / Small Signal & Opto Products (SSP) TSOP4838 |
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| U3 | IRM-3638T | DIODE, IR EMITTING, 38 KHZ, ANGLE OF HALF TRANSMISSION DISTANCE +/-45DEG/C | Vishay / Small Signal & Opto Products (SSP) TSOP4838 |
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| U4 | CHQ0038L-56kHz | DIODE, IR EMITTING, 38 KHZ, ANGLE OF HALF TRANSMISSION DISTANCE +/-45DEG/C | Vishay / Small Signal & Opto Products (SSP) TSOP4838 |
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| U5 | |
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