Automation Controls Catalog
Load for solar inverter,
Compact size,
1 Form A 22A/33A
power relays
2. Contact gap: 1.5 mm .059 inch and
1.8 mm*** .071 inch
Compliant with European photovoltaic
standard (IEC62109* and VDE0126**).
Protective construction:Flux-resistant type
30.1
* Safety standard of PV power inverter
**German safety standard of PV power inverter
***Due to addition of altitude stipulation (2,000 m
6,561.68 ft or more) to IEC62109.
15.7
EN61810-1 certified: 2.5 kV surge
breakdown voltage (between contacts)
3. Long insulation distance
Creepage distance between contact and
coil terminal: Min. 9.5 mm .354 inch
Clearance distance between contact and
coil terminal: Min. 6.5 mm .256 inch
Surge breakdown voltage: 6 kV
(Unit:mm)
FEATURES
4. Coil holding voltage contributes to
saving energy of equipment
1. High capacity
The coil holding voltage can be reduced
High capacity control possible at 22A/
up to 35%V of the nominal coil voltage
33A (High capacity type) 250V AC rating
(Ambient temperature: 20°C 68°F).
in compact size (L: 15.7 × W: 30.1 ×
Power consumption at the lowest coil
H: 23.3 mm L: .618 × W: 1.185 × H: .917
holding voltage: 170 mW equivalent
inch)
23.3
LF-G RELAYS(ALFG)
*Coil holding voltage is the coil voltage
after 100 ms from the applied nominal
coil voltage.
*When the ambient temperature during
use is 85°C 185°F, make the coil holding
voltage between 45% and 80%V of the
nominal coil voltage.
5. Conforms to various safety
standards
UL/C-UL and VDE approved
TYPICAL APPLICATIONS
1. Photovoltaic power generation
systems (Solar inverter)
2. Uninterruptible Power Supplies
(UPS)
3. Home appliances
4. Office equipment
ORDERING INFORMATION
ALFG
P F
Contact arrangement
Terminal shape
1 : 1 Form A Standard type
P:PCB type
2 : 1 Form A High capacity type
Coil insulation class
F:UL Class F
Nominal coil voltage(DC) Contact gap
09:9V, 12:12V
Nil : 1.5mm
18:18V, 24:24V
1 : 1.8mm
Note:Certified by UL/C-UL and VDE
TYPES
Contact
arrangement
Part No.
Nominal coil
voltage
Contact Gap 1.5 mm .059 inch type
Standard type
High capacity type
9V DC
ALFG1PF09
ALFG2PF09
12V DC
ALFG1PF12
ALFG2PF12
1 Form A
18V DC
ALFG1PF18
ALFG2PF18
24V DC
ALFG1PF24
ALFG2PF24
Standard packing: Carton: 50 pcs.; Case: 200 pcs.
2019.03
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1
Contact Gap 1.8 mm .071 inch type
Standard type
High capacity type
ALFG1PF091
ALFG2PF091
ALFG1PF121
ALFG2PF121
ALFG1PF181
ALFG2PF181
ALFG1PF241
ALFG2PF241
© Panasonic Corporation 2019
ASCTB196E 201903
LF-G (ALFG)
RATING
1.Coil data
• Operating characteristics such as ‘Operate voltage’ and ‘Release voltage’ are influenced by mounting conditions, ambient temperature, etc.
Therefore, please use the relay within ± 5% of rated coil voltage.
• ‘Initial’ means the condition of products at the time of delivery.
Nominal coil
voltage
Pick-up voltage
(at 20°C 68°F)
(Initial)
Drop-out voltage
(at 20°C 68°F)
(Initial)
9V DC
12V DC
18V DC
24V DC
70%V or less of
nominal voltage
10%V or more of
nominal voltage
Nominal operating
current
[±10%] (at 20°C 68°F)
155mA
117mA
78mA
59mA
Coil resistance
[±10%] (at 20°C 68°F)
Nominal operating
power
Max. applied voltage
(at 20°C 68°F)
58Ω
103Ω
230Ω
410Ω
1,400mW
120%V of
nominal voltage
2. Specifications
Characteristics
Contact
Rating
Electrical
characteristics
Item
Arrangement
Contact resistance (Initial)
Contact material
Nominal switching capacity
Max. switching power
Max. switching voltage
Max. switching current
Nominal operating power
Min. switching capacity
(Reference value)*1
Insulation resistance (Initial)
Between open
contacts
Breakdown
voltage (Initial) Between contact
and coil
Surge breakdown voltage*2
(Between contact and coil) (Initial)
Coil holding voltage*3
Mechanical
characteristics
Operate time (at 20°C 68°F) (Initial)
Release time (at 20°C 68°F) (Initial)
Functional
Shock
resistance
Destructive
Vibration
resistance
Functional
Destructive
Mechanical
Resistive load
Expected life
Conditions
Electrical
Inductive load
Conditions for operation, transport
and storage*4
Unit weight
Specifications
Standard type
High capacity type
Contact Gap 1.5 mm .059 inch type
Contact Gap 1.5 mm .059 inch type Contact Gap 1.8 mm .071 inch type
Contact Gap 1.8 mm .071 inch type
1 Form A
Max. 100 mΩ (By voltage drop 6 V DC 1A)
AgSnO2 type
22A 250V AC
31A 250V AC
33A 250V AC
5,500VA
7,750VA
8,250VA
250V AC
22A (AC)
31A (AC)
33A (AC)
1,400mW
100mA 5V DC
Min. 1,000MΩ (at 500V DC) Measurement at same location as “Breakdown voltage” section.
2,500 Vrms for 1 min. (Detection current: 10 mA)
4,000 Vrms for 1 min. (Detection current: 10 mA)
6,000 V
35 to 120%V (contact carrying
current: 31A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 31A, at 85°C 185°F)
35 to 120%V (contact carrying
current: 22A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 22A, at 85°C 185°F)
35 to 120%V (contact carrying
current: 33A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 33A, at 85°C 185°F)
Max. 20 ms (at nominal coil voltage excluding contact bounce time.)
Max. 10 ms (at nominal coil voltage excluding contact bounce time, without diode)
Min. 100 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10µs.)
Min. 1,000 m/s2 (Half-wave pulse of sine wave: 6 ms.)
10 to 55 Hz at double amplitude of 1.5 mm (Detection time: 10µs.)
10 to 55 Hz at double amplitude of 1.5 mm
Contact Gap 1.5 mm .059 inch type: Min. 106 (at 180 times/min.)
Contact Gap 1.8 mm .071 inch type: Min. 5×105 (at 180 times/min.)
22A 250V AC, Min. 3×104
—
—
(at 20 times/min.)
Destructive: 22A 250V AC
Destructive: 31A 250V AC
Destructive: 33A 250V AC
(cosφ = 0.8),
(cosφ = 0.8),
(cosφ = 0.8),
Min. 3×104 (on:off = 0.1s:10s)
Min. 3×104 (on:off = 0.1s:10s)
Min. 3×104 (on:off = 0.1s:10s)
Over load: 35A 250V AC
Over load: 47A 250V AC
Over load: 50A 250V AC
(cosφ = 0.8),
(cosφ = 0.8),
(cosφ = 0.8),
Min. 50 (on:off = 0.1s:10s)
Min. 50 (on:off = 0.1s:10s)
Min. 50 (on:off = 0.1s:10s)
Ambient temperature: –40°C to +60°C –40°F to +140°F (When nominal coil voltage applied)
–40°C to +85°C –40°F to +185°F (Coil holding voltage is when 45 to 80%V
of nominal coil voltage is applied.)
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Air pressure: 86 to 106 kPa
Approx. 23 g .81 oz
Notes: *1. This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the
actual load.
*2. Wave is standard shock voltage of ±1.2×50μs according to JEC-212-1981
*3. Coil holding voltage is the coil voltage after 100 ms from the applied nominal coil voltage.
*4. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage
conditions in NOTES.
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© Panasonic Corporation 2019
ASCTB196E 201903
LF-G (ALFG)
REFERENCE DATA
1. Standard type (Contact Gap 1.5 mm .059 inch type) (Contact Gap 1.8 mm .071 inch type)
1. Coil temperature rise
2. Ambient temperature characteristics and coil
applied voltage
Tested sample:ALFG1PF09, ALFG1PF091, 6 pcs.
Measured portion:Coil inside
Contact current:22A
Ambient temperature:20℃, 60℃
20℃ 22A
*Inside the coil temperature 155℃
(UL Class F)
Coil applied voltage(%V)
Temperature rise(℃)
100
60℃ 22A
80
20℃ 0A
60℃ 0A
60
40
20
60
180
Allowable ambient temperatures
against % coil voltages
(max. inside the coil
temperature set
as 155℃)
Contact current:22A
140
100
Operate voltage
60
80
100
120
Coil applied voltage(%V)
0
140
Coil & contact
0A
0
10
20 30 40 50 60 70 80 90
Ambient temperature(℃)
3. Electrical life test
(22A 250V AC Resistive load)
10
100
9
90
8
7
6
Operate voltage
Max.
Ave.
Min.
5
4
3
Release voltage
2
Max.
Ave.
Min.
1
0
0
No. of operations(×104)
Contact resistance(mΩ)
9V DC
Change of contact resistance
Change of operate and release voltage
Operate and release voltage(V)
250V AC
Contact
welding detection
and Mis-contacting
detection circuit
Tested sample:ALFG1PF09, ALFG1PF091, 6 pcs.
Operation frequency:ON:OFF = 1.5s:1.5s
Ambient temperature:85°
C
Circuit:
80
70
60
50
40
30
20
Max.
Ave.
Min.
10
0
3
0
No. of operations(×104)
3
4. Electrical life test
(22A 250V AC cosφ = 0.8 Inductive load)
10
100
9
90
8
7
Operate voltage
6
Max.
Ave.
Min.
5
4
3
Release voltage
2
Max.
Ave.
Min.
1
0
0
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No. of operations(×104)
3
3
Contact resistance(mΩ)
9V DC
Change of contact resistance
Change of operate and release voltage
Operate and release voltage(V)
250V AC
Contact
welding detection
and Mis-contacting
detection circuit
Tested sample:ALFG1PF09, ALFG1PF091, 6 pcs.
Operation frequency:ON:OFF = 0.1s:10s
C
Ambient temperature:85°
Circuit:
80
70
60
50
40
30
Max.
20
Ave.
10
0
Min.
0
© Panasonic Corporation 2019
No. of operations(×104)
3
ASCTB196E 201903
LF-G (ALFG)
2. High capacity type (Contact Gap 1.5 mm .059 inch type)
1. Coil temperature rise
2. Ambient temperature characteristics and coil
applied voltage
Testedsample:ALFG2PF09, 6 pcs.
Measured portion:Coil inside
Contact current:31A
Ambient temperature:20℃, 60℃
20℃ 31A
*Inside the coil temperature 155℃
(UL Class F)
Coil applied voltage(%V)
Temperature rise(℃)
100
60℃ 31A
80
20℃ 0A
60℃ 0A
60
40
20
60
180
Allowable ambient temperatures
against % coil voltages
(max. inside the coil
temperature set
as 155℃)
Contact current:31A
140
100
Operate voltage
Coil & contact
0A
60
80
100
120
Coil applied voltage(%V)
0
140
0
10
20 30 40 50 60 70 80 90
Ambient temperature(℃)
3. Electrical life test
(31A 250V AC cosφ = 0.8 Inductive load)
9V DC
Operate and release voltage(V)
Contact
welding detection
and Mis-contacting
detection circuit
250V AC
Change of contact resistance
Change of operate and release voltage
10
100
9
90
8
7
Operate voltage
6
Max.
Ave.
5
Min.
4
3
Release voltage
Contact resistance(mΩ)
Tested sample:ALFG2PF09, 6 pcs.
Operation frequency:ON:OFF = 0.1s:10s
Ambient temperature:85℃
Circuit:
Max.
Ave.
Min.
2
70
60
50
40
30
Max.
20
Ave.
10
1
0
80
0
No. of operations(×104)
0
3
Min.
0
No. of operations(×104)
3
3. High capacity type (Contact Gap 1.8 mm .071 inch type)
1. Coil temperature rise
2. Ambient temperature characteristics and coil
applied voltage
Tested sample:ALFG2PF091, 6 pcs.
Measured portion:Coil inside
Contact current:33A
Ambient temperature:20℃, 60℃
*Inside the coil temperature 155℃
(UL Class F)
Coil applied voltage(%V)
Temperature rise(℃)
120
20℃ 33A
100
60℃ 33A
80
20℃ 0A
60℃ 0A
60
Allowable ambient temperatures
against % coil voltages
(max. inside the coil
temperature set
as 155℃)
Contact current:33A
140
100
Operate voltage
60
40
20
60
180
80
100
120
Coil applied voltage(%V)
0
140
Coil & contact
0A
0
10
20 30 40 50 60 70 80 90
Ambient temperature(℃)
3. Electrical life test
(33A 250V AC cosφ = 0.8 Inductive load)
Operate and release voltage(V)
9V DC
Contact
welding detection
and Mis-contacting
detection circuit
250V AC
Change of contact resistance
Change of operate and release voltage
10
100
9
90
8
7
Operate voltage
6
Max.
Ave.
Min.
5
4
3
Release voltage
Max.
Ave.
Min.
2
0
No. of operations(×104)
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80
70
60
50
40
30
20
Max.
Ave.
Min.
10
1
0
Contact resistance(mΩ)
Tested sample:ALFG2PF091, 6 pcs.
Operation frequency:ON:OFF = 0.1s:10s
Ambient temperature:85℃
Circuit:
4
3
0
0
No. of operations(×104)
© Panasonic Corporation 2019
3
ASCTB196E 201903
LF-G (ALFG)
DIMENSIONS (mm)
CAD The CAD data of the products with a “CAD” mark can be downloaded from our Website.
CAD
External dimensions
PC board pattern (Bottom view)
27.6
2dia.
2dia.
0.5
12
23.3
13.8
4
1.8dia.
0.8
1.6
22
27.6
0.8
1.6
1.6
12
12
10
1.8dia.
Tolerance ±0.1
0.3
Schematic (Bottom view)
30.1
15.7
General tolerance
Less than 1mm:±0.1
Min. 1mm less than 3mm:±0.2
Min. 3mm:±0.3
SAFETY STANDARDS
Item
Standard type
(Contact GAP 1.5 mm/1.8 mm
.059 inch/.071 inch)
High capacity
type
File No.
E43028
1.5 mm .059 inch
E43028
1.8 mm .071 inch
E43028
UL/C-UL (Recognized)
Contact rating
22A 277V AC General Use
22A 277V AC Resistive
22A 30V DC Resistive
31A 277V AC General Use
33A 277V AC General Use
33A 30V DC Resistive
Temp.
85°C 185°F
85°C 185°F
40°C 104°F
85°C 185°F
Cycles
3 × 104
3 × 104
3 × 104
3 × 104
85°C 185°F
40°C 104°F
3 × 104
3 × 104
VDE (VDE0435) (Certified)
File No.
Contact rating
Temp.
40023067 22A 250V AC (cosφ=0.8)
85°C 185°F
—
—
—
—
—
—
40023067 31A 250V AC (cosφ=0.8)
85°C 185°F
Cycles
3 × 104
—
—
3 × 104
40023067 33A 250V AC (cosφ=0.8)
3 × 104
85°C 185°F
EN/IEC VDE Certified
INSULATION CHARACTERISTIC (IEC61810-1)
Item
Clearance/Creepage distance (IEC61810-1)
Category of protection (IEC61810-1)
Tracking resistance (IEC60112)
Insulation material group
Over voltage category
Rated voltage
Pollution degree
Type of insulation (Between contact and coil)
Type of insulation (Between open contacts)
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Characteristic
Min. 5.5mm/5.5mm
RT II
PTI 175
III a
III
250V
2
Reinforced insulation
Full disconnection
5
© Panasonic Corporation 2019
ASCTB196E 201903
LF-G (ALFG)
NOTES
1. For cautions for use, please read
“GENERAL APPLICATION
GUIDELINES”.
2. Usage, transport and storage
conditions
1) Temperature:
–40 to +60°C –40 to +140°F (When
nominal coil voltage applied)
–40 to +85°C –40 to +185°F (When coil
holding voltage is 45% to 80% of the
nominal coil voltage)
2) Humidity: 5 to 85% RH
(Avoid freezing and condensation.)
The humidity range varies with the
temperature. Use within the range
indicated in the graph below.
3) Atmospheric pressure: 86 to 106 kPa
Temperature and humidity range for
usage, transport, and storage
Humidity(%RH)
Humidity
(%RH)
85
85
Allowable range
Avoid condensation when
used at temperatures
higher than 0℃
Avoid icing
when used at
temperatures
lower than 0℃
5
ー40
0
60
Ambient temperature(℃)
Allowable range
Avoid icing
when used at
temperatures
lower than 0°C
5
Avoid condensation when
used at temperatures higher
than 0°
C
-40
0
Ambient temperature
(℃)
85
* –40 to +85°C –40 to +185°F (When 45% to
80%V of coil holding voltage)
Please refer to "the latest product specifications"
when designing your product.
• Requests to customers :
https://industrial.panasonic.com/ac/e/salespolicies/
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ASCTB196E 201903
GUIDELINES FOR POWER RELAYS AND HIGH-CAPACITY DC CUT OFF RELAYS USAGE
For cautions for use, please read “GUIDELINES FOR RELAY USAGE”.
https://industrial.panasonic.com/ac/e/control/relay/cautions_use/index.jsp
Precautions for Coil Input
Long term current carrying
Maximum allowable voltage and temperature rise
A circuit that will be carrying a current continuously for long periods
without relay switching operation. (circuits for emergency lamps, alarm
devices and error inspection that, for example, revert only during
malfunction and output warnings with form B contacts) Continuous,
long-term current to the coil will facilitate deterioration of coil insulation
and characteristics due to heating of the coil itself.
For circuits such as these, please use a magnetic-hold type latching
relay. If you need to use a single stable relay, use a sealed type relay
that is not easily affected by ambient conditions and make a failsafe
circuit design that considers the possibility of contact failure or
disconnection.
Proper usage requires that the rated coil voltage be impressed on the
coil. Note, however, that if a voltage greater than or equal to the
maximum continuous voltage is impressed on the coil, the coil may
burn or its layers short due to the temperature rise. Furthermore, do
not exceed the usable ambient temperature range listed in the catalog.
Operate voltage change due to coil temperature rise
(Hot start)
In DC relays, after continuous passage of current in the coil, if the
current is turned OFF, then immediately turned ON again, due to the
temperature rise in the coil, the pick-up voltage will become somewhat
higher. Also, it will be the same as using it in a higher temperature
atmosphere. The resistance/temperature relationship for copper wire
is about 0.4% for 1°C, and with this ratio the coil resistance increases.
That is, in order to operate of the relay, it is necessary that the voltage
be higher than the pick-up voltage and the pick-up voltage rises in
accordance with the increase in the resistance value. However, for
some polarized relays, this rate of change is considerably smaller.
DC Coil operating power
Steady state DC current should be applied to the coil. The wave form
should be rectangular. If it includes ripple, the ripple factor should be
less than 5%.
However, please check with the actual circuit since the electrical
characteristics may vary. The rated coil voltage should be applied to
the coil and the set/reset pulse time of latching type relay differs for
each relays, please refer to the relay's individual specifications.
Coil connection
When connecting coils of polarized relays, please check coil polarity
(+,-) at the internal connection diagram (Schematic). If any wrong
connection is made, it may cause unexpected malfunction, like
abnormal heat, fire and so on, and circuit do not work. Avoid
impressing voltages to the set coil and reset coil at the same time.
Ambient Environment
Dew condensation
Usage, Transport, and Storage Conditions
Condensation occurs when the ambient temperature drops
suddenly from a high temperature and humidity, or the relay is
suddenly transferred from a low ambient temperature to a high
temperature and humidity. Condensation causes the failures like
insulation deterioration, wire disconnection and rust etc.
Panasonic Corporation does not guarantee the failures caused
by condensation.
The heat conduction by the equipment may accelerate the
cooling of device itself, and the condensation may occur.
Please conduct product evaluations in the worst condition of
the actual usage. (Special attention should be paid when high
temperature heating parts are close to the device. Also please
consider the condensation may occur inside of the device.)
During usage, storage, or transportation, avoid locations
subjected to direct sunlight and maintain normal temperature,
humidity and pressure conditions.
Temperature/Humidity/Pressure
When transporting or storing relays while they are tube
packaged, there are cases the temperature may differ from the
allowable range. In this case be sure to check the individual
specifications. Also allowable humidity level is influenced by
temperature, please check charts shown below and use relays
within mentioned conditions. (Allowable temperature values
differ for each relays, please refer to the relay's individual
specifications.)
Icing
Condensation or other moisture may freeze on relays when the
temperature become lower than 0°C.This icing causes the sticking of
movable portion, the operation delay and the contact conduction failure
etc. Panasonic Corporation does not guarantee the failures caused by
the icing.
The heat conduction by the equipment may accelerate the cooling of
relay itself and the icing may occur. Please conduct product
evaluations in the worst condition of the actual usage.
Low temperature and low humidity
The plastic becomes brittle if the switch is exposed to a low
temperature, low humidity environment for long periods of time.
High temperature and high humidity
Storage for extended periods of time (including transportation periods)
at high temperature or high humidity levels or in atmospheres with
organic gases or sulfide gases may cause a sulfide film or oxide film to
form on the surfaces of the contacts and/or it may interfere with the
functions. Check out the atmosphere in which the units are to be
stored and transported.
1) Temperature:
The tolerance temperature range differs for each relays,
please refer to the relay’s individual specifications
2) Humidity:
5 to 85 % RH
3) Pressure:
86 to 106 kPa
Humidity, %R.H.
85
Allowable range
(Avoid icing
when used at
temperatures
lower than 0°
C)
5
–40
(Avoid
condensation
when used at
temperatures
higher than
0°
C)
0
Ambient temperature, °
C
85
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ASCTB412E 201903
GUIDELINES FOR POWER RELAYS AND HIGH-CAPACITY DC CUT OFF RELAYS USAGE
Package
In terms of the packing format used, make every effort to keep the
effects of moisture, organic gases and sulfide gases to the absolute
minimum.
Silicon
When a source of silicone substances (silicone rubber, silicone oil,
silicone coating materials and silicone filling materials etc.) is used
around the relay, the silicone gas (low molecular siloxane etc.) may be
produced.
This silicone gas may penetrate into the inside of the relay. When the
relay is kept and used in this condition, silicone compound may adhere
to the relay contacts which may cause the contact failure. Do not use
any sources of silicone gas around the relay (Including plastic seal
types).
NOx Generation
When relay is used in an atmosphere high in humidity to switch a load
which easily produces an arc, the NOx created by the arc and the
water absorbed from outside the relay combine to produce nitric acid.
This corrodes the internal metal parts and adversely affects operation.
Avoid use at an ambient humidity of 85%RH or higher (at 20°C). If use
at high humidity is unavoidable, please contact our sales
representative.
Others
Cleaning
1) Although the environmentally sealed type relay (plastic sealed type,
etc.) can be cleaned, avoid immersing the relay into cold liquid (such
as cleaning solvent) immediately after soldering. Doing so may
deteriorate the sealing performance.
2) Cleaning with the boiling method is recommended(The temperature
of cleaning liquid should be 40°C or lower ).
Avoid ultrasonic cleaning on relays. Use of ultrasonic cleaning may
cause breaks in the coil or slight sticking of the contacts due to
ultrasonic energy.
Please refer to "the latest product specifications"
when designing your product.
•Requests to customers:
https://industrial.panasonic.com/ac/e/salespolicies/
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c Panasonic Corporation 2019
ASCTB412E 201903
2019
ASCTB196E-1 201903