optoisolators

LTR-323DB

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This datasheet covers the LTR-323DB, a fast-switching optocoupler from Lite-On. It defines absolute maximum ratings like 150 mW power dissipation and -40 to +85°C operating temperature. Key electrical parameters include a typical wavelength of 900 nm, rise/fall times of 50 ns, reverse dark current of 30 nA, and total capacitance of 25 pF. The document details package dimensions and test conditions for high-sensitivity IR emitter and detector applications.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
output current — 13 µA —
operating temperature -40 °C — 85 °C
power dissipation — 150 mW —
reverse voltage — — 30 V
drain current — — 30 nA nA; VR = 10VEe = 0mW/cm2
rise time — 50 ns — nsec; VR = 10Vλ = 940nmRL = 1KΩ
fall time — 50 ns — nsec; VR = 10Vλ = 940nmRL = 1KΩ
dark current — 30 nA —
03 — Alternatives

Closest matches to LTR-323DB

PC817 5.0× higher dark current, 5.0× lower reverse voltage, 1.3× higher power dissipation
LTV-354T 3.3× higher dark current, 1.2× higher operating temperature, 1.1× higher power dissipation
TLP185GB 3.0× lower dark current, 1.3× higher power dissipation, 1.2× higher operating temperature
MOC3010M 10.0× lower reverse voltage, 3.0× lower dark current, 1.5× lower power dissipation
MOC3063S 5.0× lower reverse voltage, 1.7× higher power dissipation, 1.3× higher operating temperature
TCUT1350X01 6.0× lower reverse voltage, 4.0× lower power dissipation, 1.9× higher operating temperature
4N35 6.0× lower dark current, 5.0× lower reverse voltage, 2.1× lower power dissipation
LTV-217-G 5.0× lower reverse voltage, 2.1× lower power dissipation, 1.2× higher operating temperature
04 — FAQ

Frequently asked questions

What is the dark current of the LTR-323DB?

The dark current is 30 nA.

What is the drain current of the LTR-323DB when VR = 10V and Ee = 0mW/cm2?

The drain current is 30 nA.

What is the fall time of the LTR-323DB when VR = 10V, λ = 940nm, and RL = 1KΩ?

The fall time is 50 ns.

What is the maximum operating temperature for the LTR-323DB?

The maximum operating temperature is 85 °C.

What is the output current of the LTR-323DB?

The output current is 13 µA.

What is the power dissipation of the LTR-323DB?

The power dissipation is 150 mW.

What is the reverse voltage rating for the LTR-323DB?

The reverse voltage is 30 V.

What is the rise time of the LTR-323DB?

The rise time is 50 ns when VR = 10V, λ = 940nm, and RL = 1KΩ.

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