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TLP281-1
+BOM-
ManufacturerJLCPCB Assembly
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Mfr. Part #TLP281-1
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In Stock12399
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Specifications
| Attribute | Value |
| Manufacturer | JLCPCB Assembly |
| Package / Case | SOP-4 |
Overview
Description
The TLP281-1 is a photocoupler (optoisolator) from Toshiba, designed for signal isolation in electronic circuits. It features a GaAs infrared LED paired with a phototransistor, providing electrical isolation between input and output.
Key Specifications:
- Isolation Voltage: 2,500 Vrms (min)
- Current Transfer Ratio (CTR): 50% (min) at 5mA input
- Switching Speed: 3μs (max) turn-on/off time
- Operating Temperature: -55°C to +110°C
Applications:
- Industrial controls
- Power supply feedback
- Digital logic isolation
Package: 4-pin DIP (Dual In-line Package).
The TLP281-1 ensures reliable signal transmission while preventing noise and voltage spikes, making it ideal for high-voltage environments.
Key Specifications:
- Isolation Voltage: 2,500 Vrms (min)
- Current Transfer Ratio (CTR): 50% (min) at 5mA input
- Switching Speed: 3μs (max) turn-on/off time
- Operating Temperature: -55°C to +110°C
Applications:
- Industrial controls
- Power supply feedback
- Digital logic isolation
Package: 4-pin DIP (Dual In-line Package).
The TLP281-1 ensures reliable signal transmission while preventing noise and voltage spikes, making it ideal for high-voltage environments.
Equivalent
Equivalent products to the TLP281-1 (a photocoupler/optoisolator from Toshiba) include:
- PC817 (Sharp/ON Semiconductor)
- LTV-817 (Lite-On)
- EL817 (Everlight)
- SFH618A (Vishay)
- H11AA1 (Fairchild/ON Semi)
These are similar 4-pin DIP optocouplers with comparable specs (CTR ~50-600%, VISO ~5kV). Verify pinout and parameters for exact replacement.
- PC817 (Sharp/ON Semiconductor)
- LTV-817 (Lite-On)
- EL817 (Everlight)
- SFH618A (Vishay)
- H11AA1 (Fairchild/ON Semi)
These are similar 4-pin DIP optocouplers with comparable specs (CTR ~50-600%, VISO ~5kV). Verify pinout and parameters for exact replacement.
Features
The TLP281-1 is a photocoupler (optoisolator) with the following key features:
- Isolation Voltage: 2500 Vrms (min) for safe signal isolation.
- Current Transfer Ratio (CTR): 50% (min) at 5 mA input current.
- High-Speed Response: Turn-on/turn-off time of 3 μs (max).
- Low Input Current: 5 mA (typ) for efficient operation.
- Compact Package: 4-pin DIP, suitable for space-constrained designs.
- Wide Operating Temperature: -40°C to +100°C for robust performance.
- Reliable & Long-Lasting: High insulation and durability.
Ideal for industrial, telecom, and power supply applications requiring signal isolation.
- Isolation Voltage: 2500 Vrms (min) for safe signal isolation.
- Current Transfer Ratio (CTR): 50% (min) at 5 mA input current.
- High-Speed Response: Turn-on/turn-off time of 3 μs (max).
- Low Input Current: 5 mA (typ) for efficient operation.
- Compact Package: 4-pin DIP, suitable for space-constrained designs.
- Wide Operating Temperature: -40°C to +100°C for robust performance.
- Reliable & Long-Lasting: High insulation and durability.
Ideal for industrial, telecom, and power supply applications requiring signal isolation.
Pinout
The TLP281-1 is a 4-pin photocoupler (optoisolator) with the following functions:
1. Pins 1 & 2: Input side (Anode & Cathode of the IR LED).
2. Pins 3 & 4: Output side (Emitter & Collector of the phototransistor).
It provides electrical isolation (up to 3750 Vrms) and is commonly used for signal transmission between circuits, noise suppression, and voltage level shifting. The phototransistor output is open-collector, requiring an external pull-up resistor.
Key Features:
- High isolation voltage
- Low power consumption
- Compact DIP-4 package
Typical applications include PLC interfaces, I/O isolation, and digital signal isolation.
1. Pins 1 & 2: Input side (Anode & Cathode of the IR LED).
2. Pins 3 & 4: Output side (Emitter & Collector of the phototransistor).
It provides electrical isolation (up to 3750 Vrms) and is commonly used for signal transmission between circuits, noise suppression, and voltage level shifting. The phototransistor output is open-collector, requiring an external pull-up resistor.
Key Features:
- High isolation voltage
- Low power consumption
- Compact DIP-4 package
Typical applications include PLC interfaces, I/O isolation, and digital signal isolation.
