LTV-357T
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What the LTV-357T family does
The LTV-357T is a subminiature optocoupler featuring double transfer mold technology for high-density mounting. It provides a minimum current transfer ratio of 50% at 5mA input and 5V, alongside 3,750Vrms isolation voltage and a 35V collector-emitter rating. This component supports a 2.0mm profile and carries UL, CSA, and other major safety approvals. Engineers typically select the LTV-357T for hybrid substrates requiring compact footprints and programmable controllers needing reliable signal isolation. The series meets RoHS compliance standards and fits within standard tape-and-reel packaging specifications for automated assembly.
LTV-357T datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| output current | 2.5 mA | — | 30 mA | IF = 5mAVCE = 5V; transfer; ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| rds on | 50 GOhm | 100 GOhm | — | DC500V40 ~ 60% R.H.; transfer; ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| forward voltage | — | 1.2 V | 1.4 V | IF = 20mA; ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| operating temperature (abs max) | -55 °C | — | 110 °C | ABSOLUTE MAXIMUM RATING | Lite-On datasheet, p. 4 — ABSOLUTE MAXIMUM RATING |
| power dissipation (abs max) | — | — | 70 mW | ABSOLUTE MAXIMUM RATING | Lite-On datasheet, p. 4 — ABSOLUTE MAXIMUM RATING |
| reverse voltage (abs max) | — | — | 6 V | ABSOLUTE MAXIMUM RATING | Lite-On datasheet, p. 4 — ABSOLUTE MAXIMUM RATING |
| forward current (abs max) | — | — | 50 mA | ABSOLUTE MAXIMUM RATING | Lite-On datasheet, p. 4 — ABSOLUTE MAXIMUM RATING |
| reverse leakage current | — | — | 10 µA | VR = 4V; ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| breakdown voltage ds | 35 V | — | — | IC = 0.1mAIF = 0; ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| isolation voltage (abs max) | — | — | 3.75 kV | ABSOLUTE MAXIMUM RATING | Lite-On datasheet, p. 4 — ABSOLUTE MAXIMUM RATING |
| rise time | — | 4 µs | 18 µs | VCE = 2V, IC = 2mARL = 100Ω; transfer(rise); ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| fall time | — | 3 µs | 18 µs | VCE = 2V, IC = 2mARL = 100Ω; transfer(fall); ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| dark current | — | — | 100 nA | VCE = 20V, IF = 0; ELECTRICAL - OPTICAL CHARACTERISTICS | Lite-On datasheet, p. 5 — ELECTRICAL - OPTICAL CHARACTERISTICS |
| collector emitter voltage (abs max) | — | — | 35 V | ABSOLUTE MAXIMUM RATING | Lite-On datasheet, p. 4 — ABSOLUTE MAXIMUM RATING |
| output count | — | 1 | — | Lite-On datasheet, p. 2 | |
| channel count | — | 1 | — | Lite-On datasheet, p. 2 |
LTV-357T frequently asked questions
What is the breakdown voltage ds when IC = 0.1mAIF = 0?
The breakdown voltage ds is 35 V.
What is the channel count of the LTV-357T?
The channel count is 1.
What is the collector-emitter voltage under absolute maximum rating conditions?
The collector-emitter voltage is 35 V under absolute maximum rating conditions.
What is the dark current of the LTV-357T when VCE = 20V and IF = 0?
The dark current is 100 nA.
What is the fall time of the LTV-357T when VCE = 2V, IC = 2mA, and RL = 100Ω?
The fall time is 3 µs.
What is the absolute maximum rating for the forward current of the LTV-357T?
The absolute maximum rating for the forward current is 50 mA.
What is the forward voltage when IF = 20mA?
The forward voltage is 1.2 V under the condition IF = 20mA in the ELECTRICAL - OPTICAL CHARACTERISTICS.
What is the isolation voltage under ABSOLUTE MAXIMUM RATING?
The isolation voltage is 3.75 kV under ABSOLUTE MAXIMUM RATING.
What is the absolute maximum operating temperature for the LTV-357T?
The absolute maximum operating temperature is 110 °C.
What is the output count of the LTV-357T?
The output count is 1.
What is the output current when IF = 5mA, VCE = 5V, under transfer and ELECTRICAL - OPTICAL CHARACTERISTICS conditions?
The output current is 30 mA.
What is the absolute maximum power dissipation for the LTV-357T?
The absolute maximum power dissipation is 70 mW.