Outline Dimensions
(Unit : mm)
Features
Application
Absolute Maximum Ratings
1
2
3
4
3
4
1
2
2.54
0.25
4.58
0.5
1.2
0.3
0.9
0.3
2.7
MIN
6.5
0.5
7.62
0.3
0.26
0.1
3.4
0.5
0.5
0.1
3.5
0.5
4.58
0.5
:
0
to
13
Internal connection diagram
1 Anode
2 Cathode
4 Anode/
3 Anode/
Cathode
Cathode
Zero-cross circuit
0.5
TYP.
(Ta=25C)
S21MT1/S21MT2
S21MT1/S21MT2
S21MT1
S21MT1
S21MT2
1. For SSR
For 200V line
Zero-cross circuit not built in
S21MT1
S21MT2
Compact 4-pin DIP Type
Phototriac Coupler
Zero-cross circuit built in
Model Line-ups
Anode mark
*1 Decrease in the ambient temperature range of the Absolute Max. Rating : Shown in Figs. 1 and 2.
*2 40 to 60% RH, AC for 1 minute
*3 For 10 seconds
Rating
Input
Forward current
I
F
50
mA
Reverse voltage
V
R
6
V
Output
RMS ON-state current
*1
I
T
0.1
A
rms
Peak one cycle surge current
I
surge
1.2 (50Hz sine wave)
A
Repetitive peak OFF-state voltage
V
DRM
600
V
Isolation voltage
*2
V
iso
5 000
V
rms
Operating temperature
T
opr
-30 to+100
C
Storage temperature
T
stg
-55 to+125
C
Soldering temperature
*3
T
sol
260 (for 10 sec)
C
Symbol
Unit
1
2
3
4
1. Compact 4-pin DIP type
(Package area : 2/3 of conventional model)
2. Popular type
Parameter
3. Recognized by UL (No. E64380)
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data books, etc. Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device.
"
"
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that occur in equipment using any of SHARP's devices, shown in catalogs,
- 30
0
20
40
60
80
100
0
-30
0
25
75
100
125
0
10
30
40
50
60
70
20
40
60
80
100
120
20
50
Electro-optical Characteristics
Fig. 1 RMS ON-state Current vs. Ambient
Temperature
Fig. 2 Forward Current vs. Ambient
Temperature
(Ta=25C)
Ambient temperature Ta (C)
S21MT1/S21MT2
MIN.
TYP.
MAX.
Input
Forward voltage
V
F
I
F
= 20mA
-
1.2
1.4
V
Reverse current
I
R
V
R
= 3V
-
-
Output
Repetitive peak OFF-state current
I
DRM
V
DRM
= Rated
-
-
ON-state voltage
V
T
-
-
V
Holding current
I
H
V
D
= 6V
0.1
-
3.5
mA
Critical rate of rise of OFF-state voltage
V
DRM
= (1/ 2 ) Rated
100
-
-
V/
s
Zero-cross voltage
S21MT2
V
OX
-
-
35
V
Transfer
characteristics
Minimum trigger current
I
FT
-
-
10
mA
Insulation resistance
R
ISO
5 x 10
10
1 x 10
11
-
Turn-on time
S21MT1
t
on
-
-
100
s
-
-
50
S21MT2
Ambient temperature Ta (C)
Forward current I
F
(mA)
R
L
= 100
, V
D
= 6V
DC = 500V, 40 to 60% RH
V
D
= 6V, R
L
= 100
, I
F
= 20mA
I
T
= 0.05A
I
F
= 15mA, Resistance load
10
1
A
A
3.0
Symbol
Unit
dv/dt
Parameter
Conditions
RMS ON-state current I
T
(mArms)
Please refer to the chapter "Precautions for Use." (Page 78 to 93)
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