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Solid State Relay
OCMOS FET
PS7241-1B
4-PIN SOP 400 V BREAK DOWN VOLTAGE NORMALLY CLOSE TYPE
1-ch Optical Coupled MOS FET
DESCRIPTION
The PS7241-1B is a solid state relay containing GaAs LEDs on the light emitting side (input side) and normally
close (N.C.) contact MOS FETs on the output side.
It is suitable for analog signal control because of its low offset and high linearity.
FEATURES
• Small and thin package (4-pin SOP, Height = 2.1 mm)
• 1 channel type (1 b output)
• Low LED operating current (IF = 2 mA)
• Designed for AC/DC switching line changer
• Low offset voltage
• Ordering number of taping product: PS7241-1B-E3, E4, E5, F3, F4
• UL approved: File No. E72422 (S)
• BSI approved: No. 8241/8242
• CSA approved: No. CA 101391
• VDE approved: No. 121302 ÜG
APPLICATIONS
• Laptop PC, PDA
• Modem card
• Telephone, FAX
• Measurement equipment
Document No. PN10302EJ01V1DS (1st edition)
(Previous No. P13439EJ5V0DS00)
Date Published February 2003 CP(K)
The mark  shows major revised points.

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PS7241-1B
4.0±0.5
PACKAGE DIMENSIONS
in millimeters
TOP VIEW
43
1. LED Anode
2. LED Cathode
3. MOS FET
4. MOS FET
12
7.0±0.3
4.4
2.54
0.40+–00..0150 0.25 M
0.5±0.3
2 Data Sheet PN10302EJ01V1DS

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ORDERING INFORMATION (Solder Contains Lead)
Part Number
PS7241-1B
PS7241-1B-E3
PS7241-1B-E4
PS7241-1B-E5
PS7241-1B-F3
PS7241-1B-F4
Package
4-pin SOP
Packing Style
Magazine case 100 pcs
Embossed Tape 900 pcs/reel
Embossed Tape 1 000 pcs/reel
Embossed Tape 3 500 pcs/reel
Application Part Number*1
PS7241-1B
*1 For the application of the Safety Standard, following part number should be used.
ORDERING INFORMATION (Pb-Free)
Part Number
PS7241-1B-A
PS7241-1B-E3-A
PS7241-1B-E4-A
PS7241-1B-E5-A
PS7241-1B-F3-A
PS7241-1B-F4-A
Package
4-pin SOP
Packing Style
Magazine case 100 pcs
Embossed Tape 900 pcs/reel
Embossed Tape 1 000 pcs/reel
Embossed Tape 3 500 pcs/reel
Application Part Number*1
PS7241-1B
*1 For the application of the Safety Standard, following part number should be used.
ABSOLUTE MAXIMUM RATINGS (TA = 25 °C, unless otherwise specified)
Parameter
Symbol
Diode
Forward Current (DC)
IF
Reverse Voltage
VR
Power Dissipation
Peak Forward Current *1
PD
IFP
MOS FET Break Down Voltage
VL
Continuous Load Current
Pulse Load Current*2
(AC/DC Connection)
IL
ILP
Power Dissipation
Isolation Voltage *3
PD
BV
Total Power Dissipation
PT
Operating Ambient Temperature
TA
Storage Temperature
Tstg
Ratings
50
5.0
50
1
400
120
240
300
1 500
350
40 to +85
40 to +100
Unit
mA
V
mW
A
V
mA
mA
mW
Vr.m.s.
mW
°C
°C
*1 PW = 100 µs, Duty Cycle = 1 %
*2 PW = 100 ms, 1 shot
*3 AC voltage for 1 minute at TA = 25 °C, RH = 60 % between input and output
Data Sheet PN10302EJ01V1DS
PS7241-1B
3

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PS7241-1B
RECOMMENDED OPERATING CONDITIONS (TA = 25 °C)
Parameter
LED Operating Current
LED Off Voltage
Symbol
IF
VF
MIN.
2
0
TYP.
10
MAX.
20
0.5
Unit
mA
V
ELECTRICAL CHARACTERISTICS (TA = 25 °C)
Parameter
Diode
Forward Voltage
Reverse Current
MOS FET Off-state Leakage
Current
Output Capacitance
Coupled LED Off-state Current
On-state Resistance
Turn-on Time*1
Turn-off Time*1
Isolation Resistance
Isolation Capacitance
Symbol
Conditions
VF IF = 10 mA
IR VR = 5 V
ILoff IF = 10 mA, VD = 400 V
Cout IF = 10 mA, VD = 0 V, f = 1 MHz
IFoff IL = 120 mA
Ron1 IF = 0 mA, IL = 10 mA
Ron2 IF = 0 mA, IL = 120 mA, t 10 ms
ton IF = 10 mA, VO = 5 V, RL = 500 ,
toff PW 10 ms
RI-O VI-O = 1.0 kVDC
CI-O V = 0 V, f = 1 MHz
*1 Test Circuit for Switching Time
Pulse Input
IF
VL Input
MIN.
TYP.
1.2
0.03
MAX.
1.4
5.0
1.0
Unit
V
µA
µA
170
2.0
24 35
20 30
0.07 0.2
0.8 2.0
109
0.5
pF
mA
ms
pF
50 %
0
Input monitor
Rin
VO monitor
VO = 5 V
Output
RL
toff
90 %
10 %
ton
4 Data Sheet PN10302EJ01V1DS

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PS7241-1B
TYPICAL CHARACTERISTICS (TA = 25 °C, unless otherwise specified)
MAXIMUM FORWARD CURRENT vs.
AMBIENT TEMPERATURE
100
MAXIMUM LOAD CURRENT vs.
AMBIENT TEMPERATURE
300
80
200
60
40
20
0
–25 0
25 50 7585 100
Ambient Temperature TA (˚C)
FORWARD VOLTAGE vs.
AMBIENT TEMPERATURE
1.6
1.4
IF = 50 mA
1.2 30 mA
20 mA
10 mA
5 mA
1.0 1 mA
100
0
–25 0
25 50 7585 100
Ambient Temperature TA (˚C)
OUTPUT CAPACITANCE vs.
APPLIED VOLTAGE
200
f = 1 MHz
150
100
50
0.8
–25
0 25 50 75
Ambient Temperature TA (˚C)
100
OFF-STATE LEAKAGE CURRENT vs.
APPLIED VOLTAGE
10–5
IF = 10 mA
TA = 85 ˚C
10–6
0 20 40 60 80 100 120
Applied Voltage VD (V)
LOAD CURRENT vs. LOAD VOLTAGE
200
IF = 0 mA
100
10–7
25 ˚C
–4.0 –2.0
0
2.0 4.0
10–8
–100
10–9
0
100 200 300 400
Applied Voltage VD (V)
500
–200
Load Voltage VL (V)
Data Sheet PN10302EJ01V1DS
5