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TLP185(GB-TPLSE(T

Photocoupler, phototransistor output, CTR 50% min, 3750Vrms isolation, SOP4

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Pieza del fabricante：

TLP185(GB-TPLSE(T

Paquete：

MFSOP-4 (SOP4, 3.7 x 4.6 x 2.3 mm)

Marca：
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Descripción

Productos

The TLP185(GB-TPLSE(T is a photocoupler from Toshiba consisting of a gallium arsenide infrared LED optically coupled to a phototransistor detector. It provides electrical isolation between input and output with minimum CTR of 50% at 5 mA, isolation voltage of 3750 Vrms, and comes in a compact 4-pin MFSOP (SOP4) surface-mount package.

Especificaciones

Input (LED) GaAs infrared LED
Salida Phototransistor
CTR (min) 50% at IF=5 mA
Tensión de aislamiento 3750 Vrms (min)
Forward Current (IF) 50 mA max
Tensión colector-emisor (VCEO) 80V
Collector Current (IC) 50 mA max
Paquete MFSOP-4 (SOP4, 3.7 x 4.6 mm)
Temperatura de funcionamiento -55C to +110C

Características

  • Compact SOP4 surface-mount package
  • High isolation voltage: 3750 Vrms minimum
  • Current Transfer Ratio: 50% min at IF=5mA
  • UL1577 and VDE 0884 approved
  • RoHS compliant

Aplicaciones

  • Signal isolation in industrial control
  • Power supply feedback loops
  • Programmable logic controller I/O isolation
  • Appliance control signal isolation

The TLP185(GB-TPLSE(T from Toshiba is a general-purpose photocoupler consisting of a gallium arsenide infrared LED optically coupled to a phototransistor detector in a compact SOP4 surface-mount package. With a minimum current transfer ratio (CTR) of 50% at 5 mA forward current and 3750 Vrms isolation voltage, it provides reliable electrical isolation between input and output circuits. The device is UL1577 and VDE 0884 approved for safety-critical isolation applications. The SOP4 package offers significant board space savings compared to DIP packages while maintaining creepage and clearance requirements.

The TLP185 operates by converting electrical signals to light and back. When forward current flows through the infrared LED on the input side, it emits infrared radiation that passes through the optically transparent isolation barrier and strikes the base region of the phototransistor on the output side. The absorbed photons generate base current in the phototransistor, which is amplified by the transistor’s current gain (hFE) to produce a collector current. The current transfer ratio (CTR) is the ratio of output collector current to input LED current, specified at a minimum of 50% at IF=5mA. The internal isolation barrier provides galvanic separation rated at 3750 Vrms between input and output.

Pin Nombre Tipo Función
1 Ánodo Entrada LED anode
2 Cátodo Entrada LED cathode
3 Emisor Salida Phototransistor emitter
4 Colector Salida Phototransistor collector
  • Signal isolation in industrial control and PLC systems
  • Switch-mode power supply feedback loop isolation
  • Appliance and white goods control signal isolation
  • Motor drive logic-to-power interface isolation
  • Medical equipment patient interface isolation
Fabricante Número de pieza Paquete Notas
Toshiba TLP185(GB-TPL,E(T SOP4 Tape and reel variant
Toshiba TLP291(V4-TPL,E(T SOP4 Low CTR version for AC input
Vishay SFH617A-3X017T SOP4 Similar CTR, compatible
Sharp PC817X3J000F DIP-4 Industry standard DIP alternative
Everlight EL817S(B)(TU)-V SOP4 Cost-effective alternative
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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