Datasheet

MOS FET Relay Glossary
52
DIP
SOP
SSOP
USOP
VSON
S-VSON
General-purpose
Introduction
High-load-voltage Multi-contact-pair
(2a, 2b, and 1a1b)
High-current and
Low-ON-resistance
Small and High-
dielectric-strength
High-dielectric-
strength
Current-limiting
Low-output-capacitance
and Low-ON-resistance
Small and High-
load-voltage
Certified Models with
Standards Certification
MOS FET Relay Glossary
Item Symbol Description
Absolute maximum ratings
Absolute maximum rat-
ings
---
Maximum values that must never be exceeded even instantaneously
Unless otherwise specified, these values are given at Ta = 25°C.
Input
LED forward current IF Rated current that can flow continuously in the LED forward direction
Repetitive peak LED
forward current
I
FP Rated current that can flow momentarily in the LED forward direction
LED forward current
reduction rate
ΔI
F/°C Reduction rate for current that can flow in the LED forward direction in relation to the ambient temperature
LED reverse voltage VR Rated reverse voltage that can be applied between the cathode and the anode
Connection temper-
ature
T
j Rated temperature that can be allowed at the LED junction
Output
Load voltage
(AC peak/ DC)
V
OFF
Rated voltage that can be applied between the relay output terminals when switching the load or in the OFF
state
The peak voltage for AC
Continuous load
current
(AC peak/ DC)
I
O
Rated current that can flow between the relay output terminals in the ON state under the specified temperature
conditions
The peak current for AC
ON current reduc-
tion rate
ΔI
O/°C
Reduction rate for current that can flow between the relay output terminals in the ON state in relation to the
ambient temperature
Pulse ON current IOP Rated current that can flow instantaneously between the relay output terminals in the ON state
Connection temper-
ature
T
j Rated temperature that can be allowed at the light-receiving circuit junction
Dielectric strength be-
tween I/O
V
I-O Voltage that the isolation between the input and output can withstand for a specified time
Ambient operating tem-
perature
T
a Ambient temperature range in which the relay may be operated without impairment
Ambient storage temper-
ature
T
stg Ambient temperature range in the relay may be stored while not operating
Soldering temperature --- Rated temperature at which the terminals can be soldered without impairment of the relay
Electrical characteristics
Input
LED forward voltage VF Voltage drop between the LED anode and cathode at a certain forward current
Reverse current IR Leakage current flowing in the LED reverse direction (between cathode and anode)
Capacitance be-
tween terminals
C
T Electrostatic capacitance between the LED anode and the cathode terminals
Trigger LED forward
current
---
Minimum input current required to change the relay output state.
To ensure operation of the relay, a current that is equal to or greater than the maximum specified value must
be used.
I
FT Minimum value of input current IF that is required to change an MOS FET with a NO output to the ON state
I
FC Minimum value of input current IF that is required to change an MOS FET with a NC output to the OFF state
Release LED for-
ward current
---
Maximum input current required to release the relay output state.
To ensure release of the relay, a current that is equal to or less than the minimum specified value must be
used.
I
FC Maximum value of input current IF that must flow to change an MOS FET with a NO output to the OFF state
I
FT Maximum value of input current IF that must flow to change an MOS FET with a NC output to the ON state
Output
Maximum resis-
tance with output
ON
R
ON Resistance between the relay output terminals in the specified ON state
Current leakage
when the relay is
open
I
Leak
Leakage current flowing between the relay output terminals when the specified voltage is applied in the OFF
state
Capacitance be-
tween terminals
C
OFF Electrostatic capacitance between the relay output terminals in the OFF state
Limit current ILIM Load current that is maintained when current limiting is activated
Capacitance between I/O
terminals
C
I-O Electrostatic capacitance between the input and output terminals
Insulation resistance be-
tween I/O terminals
R
I-O Resistance between the input and output terminals at the specified voltage value
Turn-ON time tON
Time required for the output waveform to change after the specified input LED current is applied
NO relay: Time required for the output waveform to change from 100% to 10% after the input changes from OFF to ON
NC relay: Time required for the output waveform to change from 100% to 10% after the input changes from ON to OFF
Turn-OFF time tOFF
Time required for the output waveform to change after the specified input LED current is interrupted
NO relay: Time required for the output waveform to change from 0% to 90% after the input changes from ON to OFF
NC relay: Time required for the output waveform to change from 0% to 90% after the input changes from OFF to ON
Equivalent rise time ERT
Indicator of the output transition characteristics for fast signals or pulse signals
The ERT is expressed by the following formula, where tr
in is the input waveform rise time and trout is the output
waveform rise time after relay transition. The lower the value, the less change there is in the signal, making for
good characteristics.
ERT = √(tr
out
2
- trin
2
)