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DATA SHEET
Solid State Relay
OCMOS FET
PS7801M-1A
4-PIN ULTRA SMALL FLAT-LEAD,
LOW C × R (3.4 pF • Ω)
1-ch Optical Coupled MOS FET
NEPOC Series
DESCRIPTION
The PS7801M-1A is a low output capacitance solid state relay containing a GaAs LED on the light emitting side
(input side) and MOS FETs on the output side.
An ultra small flat-lead package has been provided which realizes a reduction in mounting area of about 50%
compared with the PS72xx series.
It is suitable for high-frequency signal control, due to its low C × R (3.4 pF • Ω), low output capacitance, and low off-
state leakage current.
FEATURES
• Ultra small flat-lead package (4.2 (L) × 2.5 (W) × 1.85 (H) mm)
• Low C × R (C × R = 3.4 pF • Ω)
• Low output capacitance (Cout = 0.95 pF TYP.)
• 1 channel type (1 a output)
• Designed for AC/DC switching line changer
• Low offset voltage
• Ordering number of taping product: PS7801M-1A-F3: 3 500 pcs/reel
• Pb-Free product
• Safety standards
<R> • UL approved: No. E72422
PIN CONNECTION
(Top View)
43
1. LED Anode
2. LED Cathode
3. MOS FET
4. MOS FET
12
APPLICATIONS
• Measurement equipment
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. PN10691EJ03V0DS (3rd edition)
Date Published May 2009 NS
Printed in Japan
The mark <R> shows major revised points.
The revised points can be easily searched by copying an "<R>" in the PDF file and specifying it in the "Find what:" field.
2007, 2009

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PACKAGE DIMENSIONS (UNIT: mm)
2.5±0.3
43
0.2 MAX.
N
12
3.0 MAX.
4.6±0.2
0.4±0.1
1.27
<R> MARKING EXAMPLE
1M
N
Last number of
type No. : 1M*1
*2
An initial of "NEC"
901
Assembly lot
No.1 pin
mark
(Nicked
corner)
9 01 (Marking details)
Week assembled
Year assembled
*1 The marking corresponds to the last two digits
of the part number below.
PS7801M-1A
*2 Bar : Pb-Free
0.2±0.1
PS7801M-1A
2 Data Sheet PN10691EJ03V0DS

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PS7801M-1A
<R> ORDERING INFORMATION
Part Number
Order Number
Solder Plating
Specification
Packing Style
Safety Standard Application
Approval
Part Number*1
PS7801M-1A
PS7801M-1A-A
Pb-Free
50 pcs (Tape 50 pcs cut)
Standard products PS7801M-1A
PS7801M-1A-F3 PS7801M-1A-F3-A
Embossed Tape 3 500 pcs/reel (UL approved)
*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
20
160
240
250
500
300
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.
Pins 1-2 shorted together, 3-4 shorted together.
RECOMMENDED OPERATING CONDITIONS (TA = 25°C)
Parameter
LED Operating Current
LED Off Current
Symbol
IF
IF
MIN.
4.5
0.1
TYP.
5
MAX.
20
Unit
mA
mA
Data Sheet PN10691EJ03V0DS
3

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ELECTRICAL CHARACTERISTICS (TA = 25°C)
Parameter
Symbol
Conditions
Diode
Forward Voltage
VF IF = 5 mA
Reverse Current
IR VR = 5 V
MOS FET Off-state Leakage Current ILoff VD = 20 V
Output Capacitance
Cout VD = 0 V, f = 1 MHz, t 1 s
Coupled LED On-state Current
IFon IL = 160 mA
On-state Resistance
Turn-on Time*1, 2
Turn-off Time*1, 2
Ron IF = 5 mA, IL = 160 mA, t 10 ms
ton IF = 5 mA, VO = 5 V, RL = 500 Ω,
toff PW 0.5 ms
Isolation Resistance
RI-O VI-O = 0.5 kVDC
Isolation Capacitance
CI-O V = 0 V, f = 1 MHz
*1 Test Circuit for Switching Time
Pulse Input
IF
VL Input
PS7801M-1A
MIN.
109
TYP.
1.1
0.03
0.95
3.6
0.05
0.03
MAX.
1.4
5.0
0.25
1.5
4
5.0
0.25
0.25
0.3
Unit
V
μA
nA
pF
mA
Ω
ms
Ω
pF
50%
0
Input monitor
Rin
VO monitor
VO = 5 V
Output
RL
ton
90%
10%
toff
*2 The turn-on time and turn-off time are specified as input-pulse width 0.5 ms.
Be aware that when the device operates with an input-pulse width less than 0.5 ms, the turn-on time and turn-off
time will increase.
4 Data Sheet PN10691EJ03V0DS

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PS7801M-1A
<R> TYPICAL CHARACTERISTICS (TA = 25°C, unless otherwise specified)
MAXIMUM FORWARD CURRENT vs.
AMBIENT TEMPERATURE
100
MAXIMUM LOAD CURRENT vs.
AMBIENT TEMPERATURE
200
80 160
60 120
40 80
20 40
0
–25 0
25 50 75 85 100
Ambient Temperature TA (°C)
FORWARD VOLTAGE vs.
AMBIENT TEMPERATURE
1.6
1.4
IF = 50 mA
1.2 30 mA
20 mA
10 mA
1.0 5 mA
1 mA
0.8
–25
0 25 50 75
Ambient Temperature TA (°C)
100
OFF-STATE LEAKAGE CURRENT vs.
AMBIENT TEMPERATURE
10–8
10–9
VD = 20 V
10–10
10–11
10–12
10–13
10–14
0
20 40 60 80
Ambient Temperature TA (°C)
100
0
–25 0
25 50 75 85 100
Ambient Temperature TA (°C)
OUTPUT CAPACITANCE vs.
APPLIED VOLTAGE
2.0
1.8 f = 1 MHz,
t1s
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0 5 10 15 20 25
Applied Voltage VD (V)
LOAD CURRENT vs. LOAD VOLTAGE
200
IF = 5 mA
150
100
50
–1.0 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 1.0
–50
–100
–150
–200
Load Voltage VL (V)
Remark The graphs indicate nominal characteristics.
Data Sheet PN10691EJ03V0DS
5