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FOD817D3SD
DIP-4 SMD
The FOD817D3SD from onsemi is a phototransistor optocoupler with high CTR (300-600%) and 5000Vrms isolation in a DIP-4 SMD package for signal isolation in feedback loops.
| الحزمة | DIP-4 SMD |
The FOD817D3SD from onsemi is a phototransistor optocoupler with high CTR (300-600%) and 5000Vrms isolation in a DIP-4 SMD package for signal isolation in feedback loops.
The FOD817D3SD is a phototransistor optocoupler from onsemi in DIP-4 SMD (gull-wing), providing galvanic isolation up to 5000Vrms. The device consists of an infrared LED optically coupled to an NPN phototransistor. When the LED is forward-biased, emitted photons are absorbed by the phototransistor base region, generating base current that turns on the collector-emitter conduction. The CTR (Current Transfer Ratio) is 300-600% (D3 rank), meaning the phototransistor can sink 3-6x the LED current. At IF=5mA, the phototransistor can sink 15-30mA, sufficient for driving logic gates, MOSFET gates (through a driver), or relay coils. The bandwidth is approximately 80kHz (limited by the phototransistor storage time), making it suitable for low-frequency signals and DC isolation. The saturation voltage (VCE(sat)) is 0.1V at IF=5mA and IC=1mA, important for logic-level interfacing. The -SD suffix specifies DIP-4 SMD (gull-wing leads). The -D3 suffix specifies the CTR rank (300-600%). The 5000Vrms isolation meets IEC 60747-5-2 for reinforced isolation. Applications include: SMPS feedback loops (voltage isolation from secondary to primary), AC zero-crossing detection, and logic signal isolation in motor drives.
| دبوس | الاسم | النوع | الوظيفة |
|---|---|---|---|
| 1 | الأنود | المدخلات | LED anode (connects to current-limiting resistor, IF=5-50mA) |
| 2 | القطب السالب | المدخلات | LED cathode (connects to signal ground of driving side) |
| 3 | الباعث | المخرجات | Phototransistor emitter (output, LOW when LED is on) |
| 4 | جامع التحصيل | المخرجات | Phototransistor collector (connects to pull-up resistor and load) |
| الشركة المصنعة | رقم الجزء | الحزمة | الملاحظات |
|---|---|---|---|
| أونسمي | FOD817D3SD | DIP-4 SMD | Same device, onsemi brand |
| فيشاي | CNY17F-3 | DIP-4 | Phototransistor optocoupler, Vishay brand |
| إيفرلايت | EL817D | DIP-4 | Phototransistor optocoupler, Everlight brand |
| Sharp | PC817C | DIP-4 | Phototransistor optocoupler, Sharp brand |
| توشيبا | TLP785GB | DIP-4 | Phototransistor optocoupler, Toshiba brand |
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
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