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| PartNumber | TSOP77438TR | TSOP77436TT | TSOP77436WTR |
| Description | Infrared Receivers 38kHz AGC4 Heimdall NEC, Sharp Rem Cntrl | Infrared Receivers Heimdall 36kHz AGC4 | IR SENSOR IC 36KHZ -E3 |
| Manufacturer | Vishay | Vishay | - |
| Product Category | Infrared Receivers | Infrared Receivers | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Carrier Frequency | 38 kHz | 36 kHz | - |
| Transmission Distance | 40 m | 40 m | - |
| Beam Angle | 100 deg | 100 deg | - |
| Output Current | 5 mA | 5 mA | - |
| Operating Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | - |
| Operating Supply Current | 0.7 mA | 700 uA | - |
| Minimum Operating Temperature | - 25 C | - 25 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Package / Case | Heimdall-4 | Heimdall-4 | - |
| Packaging | Reel | - | - |
| Series | TSOP77 | TSOP77 | - |
| Brand | Vishay Semiconductors | Vishay Semiconductors | - |
| Moisture Sensitive | Yes | Yes | - |
| Product Type | IR Receivers | IR Receivers | - |
| Factory Pack Quantity | 2300 | 2200 | - |
| Subcategory | Infrared Data Communications | Infrared Data Communications | - |