SONG CHUAN SONG CHUAN
244
□ Micro 280 automotive relay.
□ SPNO & SPDT contact configurations.
□ NO contacts switch 35A resistive load, NC contacts
switch 20A resistive load, 100,000 ops., 23°C.
□ Operating ambient temperature -40°C to 125°C.
□ Optional resistor or diode for coil transient suppression.
□ Complies with RoHS-Directive 2011/65/EU and ELV-
Directive 2000/53/EC.
Ordering Information
Type List
Features
1. 301 -- Basic series designation
2. 1A -- Single pole normally open
1C -- Single pole double throw
3. D -- Dust cover
C -- Flux tight
S -- Sealed type washable
4. Blank -- Standard type
R1 -- Coil parallel with 1/2W resistor for
6V 180Ω, 12V 680Ω, 24V 2700Ω
D1 -- Coil parallel with diode 1N4007
the diode anode on # 85 terminal
301 - 1A - D -
1 2 3 4
Enclosure style
Terminal
style
Contact
form
Designation
(provided with) Dust cover Flux tight Sealed type
washable
---------- 301-1A-D 301-1A-C 301-1A-S
1A (SPNO) Resistor 301-1A-D-R1 301-1A-C-R1 301-1A-S-R1
Diode 301-1A-D-D1 301-1A-C-D1 301-1A-S-D1
Socket terminal
---------- 301-1C-D 301-1C-C 301-1C-S
1C (SPDT) Resistor 301-1C-D-R1 301-1C-C-R1 301-1C-S-R1
Diode 301-1C-D-D1 301-1C-C-D1 301-1C-S-D1
5
5. -- Coil voltage (please refer to the
coil rating data for the availability)
Contact Rating
1A 1C
NO : 35A 14VDC, 15A 28VDC
Resistive load 35A 14VDC
15A 28VDC
NC : 20A 14VDC, 10A 28VDC
Coil Rating (DC)
Rated
voltage
Rated current
±10 % at 23°C
without
resistor
Coil resistance
±10 % at 23°C
Max.
continuous
voltage
at 85°C
Pick up
voltage
(Max.)
at 23°C
Drop out
voltage
(Min.)
at 23°C
Power consumption
at rated voltage
6V 188 mA 32 Ω133 % of
rated
voltage
60 % of
rated
voltage
10 % of
rated
voltage
with
resistor
222 mA
without
resistor
with
resistor
27 Ω
approx.
1.2W
without
resistor
with
resistor
approx.
1.4W
12V98 mA 123 Ω
115 mA 104 Ω
24V50 mA 483 Ω
59 mA 410 Ω
Note : (1) With continuous contact current 15A.
(1)
301 301
SONG CHUAN
SONG CHUAN
245
301
Specification
Contact material AgSnO alloy
Contact voltage drop (1) Typ. 40mV at 10A
Operate time (1) 10ms Max.
Release time (1) 10ms Max.
Insulation resistance (1) 20MΩ Min. (DC 500V)
Between open contact : AC 500V , 50/60Hz 1 min.
Dielectric strength (1)
Between contact and coil : AC 500V , 50/60Hz 1 min.
Operating extremes 10∼500Hz , 5.0G
Vibration resistance
Damage limits 10∼500Hz , 5.0G
Operating extremes 10G
Shock resistance
Damage limits 100G
10,000,000 ops. (frequency 18,000 ops./hr.) Mechanical
Life expectancy Electrical
Operating ambient temperature
Weight Approx. 20 g
-40～+125°C (no freezing)
100,000 ops. (frequency 1,800 ops./hr.)
Note ：(1) Initial value. Operate and release time excluding contact bounce.
(2) Unless otherwise specified, all tests are under room temperature and humidity.
(3) Do not use the relay exceeding the coil rating, contact rating and life expectancy, or this may cause
the risk of overheating.
(4) To assure optimum performance, avoid the relay from dropping, hitting, or other unnecessary shocks.
(5) Do not switch the contacts without any load as the contact resistance may become increased rapidly.
(6) Flux tight version is recommended. If there is cleaning process and sealed type is selected,
the vent-hole should be removed after the process.
(7) Use suitable harnesses and bus bars according to the current as below︰
25A type︰Min. 6.0mm
(8) Usage, transport and storage conditions
● 1. Temperature: -40～+125°C
● 2. Humidity: 5 to 85% R.H.
● 3. Pressure: 86 to 106 kPa
● Furthermore, the humidity range varies with the temperature. So, use relays
within the range indicated in the graph below.
(9) Please contact Song Chuan for the detailed information.
2
Tolerance range
Humidity, %RH
(Avoid
freezing when
used at
temperatures
lower than
0°C)
(Avoid
condensation
when used at
temperatures
higher than 0°C )
Temperature, °C
301
SONG CHUAN SONG CHUAN
246
301
Engineering Data
5 35
NO
NC
302510 15 20
7
5
6
Number of operations
10
10
0
10
Life expectancy
14VDC resistive load/Switching current(A)
Number of operations
Life expectancy
28VDC resistive load/Switching current(A)
2
10
0
7
5
6
10
10
46 8 10
NO
12
014 16
NC
(normally open contact)for resistive loads.
Safe breaking,arc extinguished
Switching current(A)
Switching voltage(VDC)
0.5
10
1
15
20
30
50
40
50W
2 3 5 10
100W
20
490W
200W
35
70
60
90
15
Wiring Diagram
BOTTOM VIEW
1A 1C R1 D1
86
30
85
87A
87
85
86
85
86
86
30
85 87
(-)
(+)
% of Nominal coil voltage (at 23℃)
3
5avg
min
max
Operate time/Release time
2
6
14013012011090 100
Time (ms)
70
4
80 150
1
0
min
avg
max
Operate time
Release time
7
9
8
10
11
12
Applied coil voltage (% of rated nominal)
Ambient temperature vs coil voltage for continuous contact load
Max. allowable ambient temperature
90
30
20
95
90
60
50
40
80
70
100
110
130
120
140
115105100 110 125120 130 135
25A
15A
35A
20A
Maximum mean coil temperature=155°C
Outline Dimensions
L
C
(0.591)
15
(0.031)
0.8-5
(0.154)
3.9
(0.307)
7.8
L
C
(0.886)
22.5
(0.984)
25
(0.433)
11
(0.110)
2.8-5
(0.319)
8.1
(0.638)
16.2
MORE THAN: 20(0.787) ±1(0.039)
20(0.787) ±0.5(0.020)
5(0.197) ±0.3(0.012)
LESS THAN: 1(0.039) ±0.1(0.004)
TOLERANCE:
———— All specications subject to change. Please contact Song Chuan for update. ————
611/871E
