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303
SONG CHUAN
246
303 Ultra Micro ISO Automotive relay. High Rating up to 20A. High Temperature withstand up to 125 ambient. General Purpose for Automotive applications.
Contact Rating
Ordering Information
Type List
Coil Rating (DC)
Features
1. 303
-- Basic series designation
2. 1A
-- Single pole normally open
3. H
-- Contact material AgSnO
4. D
-- Dust cover
C
-- Flux tight
V
-- Sealed type
S
-- Sealed type washable
5. Blank -- Standard type
R1
-- Coil parallel with resistor 680 for
coil voltage 12VDC
D1
-- Coil parallel with diode IN4007 the
positive pole "+" on # 85 terminal
303
-
1A
H
-
D
-
R1
1
2
3
4
5
Enclosure style
Terminal
style
Contact
form
Designation
(provided with)
Dust cover
Flux tight
Sealed type
Sealed type
washable
----------
303-1AH-D
303-1AH-C
303-1AH-V
303-1AH-S
Socket terminal
Resistor
303-1AH-D-R1 303-1AH-C-R1 303-1AH-V-R1 303-1AH-S-R1
1A
(SPNO)
Diode
303-1AH-D-D1 303-1AH-C-D1 303-1AH-V-D1 303-1AH-S-D1
Inductive
4A 14VDC ON 3s / OFF 3s -30+80 880K ops.
Motor fuel-pump
8A 14VDC Inrush 30A ON 1s / OFF 3s -30 +80 160K ops.
Motor radiator-fan
16A 14VDC Inrush 80A ON 2s / OFF 5s -30 +80 440K ops.
Lamp
16A 14VDC Inrush 80A ON 3s / OFF 3s -30 +100 100K ops.
Resistive
20A 14VDC +25 100K ops.
Max. switching current
Coil 16VDC / Contact 20A 14VDC +100
Rated
voltage
(V)
Rated current
±10 % at 23C
(mA)
Coil resistance
±10 % at 23C
(
)
Max. continuous
voltage
at 85C
Pick up
voltage(Max)
at 23C
Drop out
voltage(Min)
at 23C
Power consumption
at rated
voltage
133 % of
60 % of
10 % of
12
80
150
rated
rated
rated
approx. 0.96W
voltage
voltage
voltage
SONG CHUAN
303
(1)
12VDC COIL: 680
Resistor in parallel
Note(1) SONG CHUAN
247
303
Specification
Outline Dimensions
Note:(1)Initial value
Contact material
AgSnO alloy
Contact voltage drop
(1)
NO:200 mV Max. at 15A NC:250mV Max. at 10A
Operate time
(1)
10 ms MAX
Release time
(1)
10 ms MAX
Insulation resistance
(1)
20 M
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
10500Hz , 5.0G
Vibration resistance
Damage limits
10500Hz , 5.0G
Operating extremes
10G
Shock resistance
Damage limits
100G
10,000,000 operations
Mechanical
(frequency 18,000 operations/hr)
100,000 operations
Life expectancy
Electrical
(frequency 1,800 operations/hr)
Operating ambient temperature
-40 ~ +125C (no freezing)
Weight
Approx. 20 g
(
0
.
9
3
3
)
2
3
.
7
(0.630)
16
(
0
.
4
3
3
)
1
1
(0.031)
0.8X5
(0.591)
15
(
0
.
3
0
7
)
7
.
8
(0.319)
8.1
SONG CHUAN
303
1A
30
85
86
87
1A (R1)
30
85
86
87
Wiring Diagram
BOTTOM VIEW