PR308S31ESU Datasheet, PDF (8/14 Pages) Sharp Electrionic Components – Output current, IT(rms) 8.0A

■ Design Considerations
● Recommended Operating Conditions
Parameter
Symbol
Input signal current at ON state
Input _{Input signal current at OFF state}
I_F(ON)
I_F(OFF)
Load supply voltage
V_OUT(rms)
Output Load supply current
I_OUT(rms)
Frequency
f
Operating temperature
T_opr
(^∗) See Fig.2 about derating curve (I_T(rms) vs. ambient temperature).
Conditions
−
−
−
−
−
−
PR308S31ESU
MIN.
20
0
80
0.1
47
−20
MAX.
Unit
30
mA
0.1
mA
240
V
I_T(rms)×80%(∗) mA
63
Hz
80
˚C
● Design guide
In order for the SSR to turn off, the triggering current (lF) must be 0.1mA or less.
In phase control applications or where the SSR is being by a pulse signal, please ensure that the pulse width
is a minimum of 1ms.
For over voltage protection, a varistor may be used.
A varistor used for the above mentioned scenarios should be located as close to the main output triac as
possible.
The load current should be within the bounds of derating curve. (Refer to Fig.2)
Also, please use the optional heat sink when necessary.
In case the optional heat sink is used and the isolation voltage between the device and the optional heat sink
is needed, please locate the insulation sheet between the device and the heat sink.
When the optional heat sink is equipped, please set up the M3 screw-fastening torque at 0.3 to 0.5N•m.
In order to dissipate the heat generated from the inside of device effectively, please follow the below sugges-
tions.
(a) Make sure there are no warps or bumps on the heat sink, insulation sheet and device surface.
(b) Make sure there are no metal dusts or burrs attached onto the heat sink, insulation sheet and device sur-
face.
(c) Make sure silicone grease is evenly spread out on the heat sink, insulation sheet and device surface.
Silicone grease to be used is as follows;
1) There is no aged deterioration within the operating temperature ranges.
2) Base oil of grease is hardly separated and is hardly permeated in the device.
3) Even if base oil is separated and permeated in the device, it should not degrade the function of a device.
Recommended grease : G-746 (Shin-Etsu Chemical Co., Ltd.)
: G-747 (Shin-Etsu Chemical Co., Ltd.)
: SC102 (Dow Corning Toray Silicone Co., Ltd.)
In case the optional heat sink is screwed up, please solder after screwed.
Sheet No.: D4-A03601EN
8