The Everlight EL357N(C)(TA)-G is a single-channel phototransistor optocoupler integrating an infrared-emitting diode optically coupled to a phototransistor detector. It is designed for isolated signal transmission between circuits operating at different potentials or impedances, with applications including DC/DC converters, programmable controllers, and telecommunications equipment.
The C suffix identifies the CTR rank, providing a 200% to 400% current transfer ratio at IF = 5mA and VCE = 5V. Input forward voltage is 1.2V typical and 1.4V maximum at 20mA. The phototransistor output provides at least 80V collector-emitter breakdown voltage and supports up to 50mA collector current.
Collector-emitter saturation voltage is 0.1V typical and 0.2V maximum at IF = 20mA and IC = 1mA. The device provides 3750Vrms isolation for one minute, at least 5 × 10¹⁰Ω isolation resistance, and approximately 0.6pF typical isolation capacitance. Maximum rise and fall times are both 18µs under the specified test conditions.
The operating-temperature range is -55°C to +110°C. Its 4-pin SOP package has a body size of approximately 4.40 × 4.10mm, a 2.0mm maximum profile, and 2.54mm lead pitch.
In the order code, TA denotes tape-and-reel packaging with 3,500 devices per reel, while G denotes the halogen-free version. Everlight’s ordering guide uses a separate V option for VDE, so this exact non-V order code should not be described as the VDE-option version.
Key Features:
- Manufacturer: Everlight Electronics
- Part Number: EL357N(C)(TA)-G
- Device Type: Phototransistor Optocoupler
- Channels: 1
- CTR Rank: C
- CTR: 200% to 400% at 5mA
- Isolation Voltage: 3750Vrms
- Maximum LED Forward Current: 50mA
- Typical Forward Voltage: 1.2V at 20mA
- Collector-Emitter Breakdown Voltage: ≥80V
- Maximum Collector Current: 50mA
- Maximum VCE(sat): 0.2V
- Minimum Isolation Resistance: 5 × 10¹⁰Ω
- Typical Isolation Capacitance: 0.6pF
- Maximum Rise Time: 18µs
- Maximum Fall Time: 18µs
- Operating Temperature: -55°C to +110°C
- Package: 4-Pin SOP
- Lead Pitch: 2.54mm
- Maximum Package Height: 2.0mm
- Packaging: TA Tape & Reel
- Reel Quantity: 3,500 pcs
- G Option: Halogen-Free
- Pb-Free / RoHS Compliant.
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