نظرة عامة على المنتج
LTV-357T-B from Lite-On is a single-channel phototransistor optocoupler with CTR 130-260% @ 5mA, 3750Vrms isolation, 35V VCEO, 50mA output current. SOP-4 surface-mount. -B suffix = high CTR rank.
مبدأ العمل
Infrared LED on input side emits light to phototransistor on output side, providing galvanic isolation. CTR (Current Transfer Ratio) determines output current for given LED current. B-rank guarantees 130-260% CTR at IF=5mA. 3750Vrms isolation between input and output.
Pin Description
| دبوس | الاسم | الوظيفة |
|---|---|---|
| 1 | الأنود | LED anode |
| 2 | القطب السالب | LED cathode |
| 3 | الباعث | Phototransistor emitter |
| 4 | جامع التحصيل | Phototransistor collector |
التطبيقات
- Signal isolation
- PLC I/O isolation
- Power supply feedback
- Industrial control
Alternative Models
| Mfr | Part | الملاحظات |
|---|---|---|
| Sharp | PC817B | DIP-4 equivalent |
| فيشاي | SFH615A-3 | Similar CTR |