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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| 4N27M | ON SEMICONDUCTOR | IC Photodarlington Optocoupler 6-DIP DC-IN 1-Channel | 16,000 | 1 ---- $0.1650 1000 ---- $0.1650/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| 4N33M | ON SEMICONDUCTOR | IC Optoisolator Darlington with Base Output 4170Vrms 1 Channel 6-DIP | 1,500 | 1 ---- $0.2850 1500 ---- $0.2850/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| 4N35M | ON SEMICONDUCTOR | IC Optoisolator Darlington with Base Output 4170Vrms 1 Channel 6-DIP | 3,800 | 1 ---- $0.2550 1000 ---- $0.2550/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| LTV-817-C | LITE-ON SEMICONDUCTOR CORP | Optocoupler DC-IN 1-CH Transistor DC-Out 4-DIP | 0 | 1 ---- $0.4500 50 ---- $0.3300/pc 100 ---- $0.2400/pc 500 ---- $0.2000/pc 1000 ---- $0.1650/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| LTV817C | LITE-ON SEMICONDUCTOR CORP | Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin PDIP | 10,000 | 1 ---- $0.6300 10 ---- $0.4000/pc 100 ---- $0.2400/pc 500 ---- $0.2000/pc 1000 ---- $0.1750/pc 2500 ---- $0.1600/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| MOC3021M | ON SEMICONDUCTOR | Optoisolator Triac 6-DIP AC-OUT 1 Channel 400V | 700 | 1 ---- $0.7000 10 ---- $0.6000/pc 50 ---- $0.5000/pc 100 ---- $0.4000/pc 250 ---- $0.3700/pc 500 ---- $0.3200/pc 1000 ---- $0.2800/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| PT204-6B | EVERLIGHT ELECTRONICS | Phototransistor IR Chip Silicon 940nm 2-Pin T-1 | 240,000 | 1 ---- $0.4000 10 ---- $0.3700/pc 100 ---- $0.3100/pc 500 ---- $0.2400/pc 1000 ---- $0.1900/pc 2000 ---- $0.1350/pc 5000 ---- $0.1000/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| SFH5440 | OSRAM GmbH | Schmitt-Trigger IC Optical Sensor 3-SMD Gull Wing - MSL4 - Original Vacuum pack in 2,000pcs / Reel | 0 | 1 ---- $1.8000 2000 ---- $1.8000/pc | |