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PS2805-1-F3-A

5kVrms photocoupler, CTR 80-160%, 80V, SOP-4 SMD

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Manufacturer Part：

PS2805-1-F3-A

Package：

SOP-4 / SSOP-4 (4.40 x 2.30 x 2.10 mm)

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Description

Product Overview

The PS2805-1-F3-A from CEL (California Eastern Labs / Renesas) is a 5kVrms photocoupler with a GaAlAs LED and phototransistor output, CTR 80-160% at IF=5mA, in a 4-pin SOP (SMD) package.

Key Specifications

Isolation Voltage 5000 Vrms
CTR Grade 80-160% @ IF=5mA (rank A)
Collector-Emitter Voltage 80 V
Collector Current 50 mA
LED Forward Voltage 1.2V typical @ IF=20mA
Propagation Delay 3 us typical
Operating Temperature -40°C to +100°C
Package SOP-4 (2.3×4.4mm)

Features

  • 5kVrms isolation photocoupler with CTR 80-160% in compact SOP-4

Applications

  • Industrial control signal isolation and power supply feedback

The PS2805-1-F3-A from CEL (California Eastern Labs) is a photocoupler consisting of a GaAlAs infrared LED optically coupled to a silicon phototransistor in a compact 4-pin SOP surface-mount package. The device provides 5000Vrms isolation voltage and a CTR (current transfer ratio) of 80-160% at IF=5mA for the A rank. The 80V collector-emitter voltage and 50mA collector current support general-purpose switching and signal isolation. The GaAlAs LED provides higher CTR and better linearity than GaAs LED alternatives. The SOP-4 package has a 2.3mm creepage distance, suitable for basic insulation requirements. The F3 suffix denotes the SOP-4 surface-mount package.

The PS2805-1-F3-A operates as a phototransistor photocoupler. (1) LED Input: Forward current through the GaAlAs LED generates infrared light at approximately 940nm. The GaAlAs LED provides higher radiant efficiency than traditional GaAs LEDs, resulting in higher CTR. (2) Optical Coupling: The infrared light crosses the isolation barrier and illuminates the base region of the phototransistor. (3) Phototransistor Output: The photogenerated base current drives the phototransistor. The collector current IC = CTR x IF. For the A rank (80-160%), at IF=5mA, IC ranges from 4mA to 8mA. (4) Isolation: The transparent dielectric between LED and phototransistor provides 5kVrms galvanic isolation, meeting safety requirements for industrial and ITE equipment.

Pin Name Function
1 Anode LED anode
2 Cathode LED cathode
3 Emitter Phototransistor emitter
4 Collector Phototransistor collector
  • Industrial control signal isolation and SMPS feedback at 5kVrms
Manufacturer Part Number Package Notes
Vishay SFH6319T-3 DIP-6 Similar CTR, DIP package
onsemi FOD817C DIP-4 5000Vrms, CTR 200-400%
Toshiba TLP184(GB SSOP-4 Pin-compatible, similar
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