4N35S-TA1

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4N35S-TA1

OPTOISO 3.55KV TRANS W/BASE 6SMD

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Spezifikationen

Series 4N3X
Part Status Active
Base Product Number 4N35
Number of Channels 1
Voltage - Isolation 3550Vrms
Current Transfer Ratio (Min) 100% @ 10mA
Rise / Fall Time (Typ) 3µs, 3µs
Input Type DC
Output Type Transistor with Base
Voltage - Output (Max) 30V
Current - Output / Channel 100mA
Voltage - Forward (Vf) (Typ) 1.2V
Current - DC Forward (If) (Max) 60 mA
Vce Saturation (Max) 300mV
Operating Temperature -55°C ~ 100°C
Mounting Type Surface Mount
Package 6-SMD, Gull Wing
Supplier Device Package 6-SMD
Packaging Cut Tape (CT), Tape & Reel (TR)

Übersicht

Description

4N35S-TA1 is a variant of the classic 4N35 optocoupler (photocoupler). It provides galvanic isolation between input and output via an infrared LED on the input side and an NPN phototransistor on the output side. The “S-TA1” suffix denotes a specific packaging/lot variant; check the exact datasheet for its ratings.
How it works: drive the input LED with a forward current; light drives the output transistor. The output is open-collector and requires a pull-up resistor to a logic supply.
Key points:
- Input: LED forward voltage ~1.2–1.4 V; recommended IF ≈ 5–20 mA (max higher).
- Output: NPN phototransistor; CTR varies with IF and temperature (broad range, typically tens to a few hundred percent).
- Isolation: ~5 kV RMS (model-dependent).
- Interface: LED on one side, transistor on the other; use pull-up on output.
Applications: microcontroller/PLC isolation, level shifting, signal conditioning, and safety-critical interfaces. Always verify CTR, VCEO, and pinout in the specific 4N35S-TA1 datasheet.

Features

Here are the common features of the 4N35S-TA1 optocoupler:
- Photocoupler with LED input and NPN phototransistor output
- Electrical isolation between input and output (up to ~5 kV RMS)
- DIP-6 through-hole package (TA1 variant in the 4N35 family)
- Input: LED forward current typically 5–20 mA (IF); Vf ≈ 1.2 V at 20 mA (max ratings given in datasheet)
- Output: Phototransistor can sink current; VCEo around 35 V (max), IC up to ~50 mA
- CTR (current transfer ratio) wide range and temperature dependent (typical broad range; used to determine drive current)
- Good noise immunity and simple interface to logic or microcontrollers
- Operating temperature range typically industrial (-40°C to +85°C)
Applications: isolated signal interfaces, microcontroller interfacing, safety-critical isolation, noise rejection.

Package

It's a 6-pin DIP optocoupler in a plastic through‑hole package (DIP-6).

Pinout

6 pins. It’s an optocoupler (phototransistor output). Input LED: pin 1 (anode) and pin 2 (cathode). Output transistor: pin 4 (collector) and pin 3 (emitter). Pins 5 and 6 are no-connect.

Manufacturer

Manufacturer: Vishay Intertechnology (Vishay).
Type of company: A global manufacturer of electronic components, including semiconductors and passive components (and related optoelectronic devices such as optocouplers).

Application

4N35S-TA1 is a phototransistor optocoupler. Common applications:
- Galvanic isolation between microcontrollers/logic and high-voltage or noisy field circuits
- Isolated interfaces for sensors, transducers, and instrumentation
- Isolated feedback and control in switch-mode power supplies (SMPS) and lamp drivers
- Signal level shifting and buffering with noise immunity
- PLC/industrial automation I/O isolation and safe interfacing
- Educational/hobbyist projects needing low-cost, isolated signal coupling

Equivalent

4N35S-TA1 is a standard phototransistor optocoupler. Common equivalents/cross‑refs include:
- PC817
- EL817
- LTV-817/LTV-817A
- SFH618A
Also consider other 4N35/4N25 family devices from vendors like Vishay. Always verify CTR, input current, and pinout before substituting.

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