SONG CHUAN
842
Features
Low current and low profile miniature PCB Relay.
Fine Ag contacts with rating 1A to 3A.
UL/CUL approval.
Sealed flux free and sealed washable types are
available.
Comply with RoHS-Directive 2011/65/EU.
Type List
Terminal
style
Contact
form
1A
(SPNO)
PCB terminal
1C
(SPDT)
Terminal
layout
General
Different
General
Different
Flux tight
842-1A-C
842A-1A-C
842-1C-C
842A-1C-C
Designation
Sealed type
842-1A-V
842A-1A-V
842-1C-V
842A-1C-V
Sealed type
washable
842-1A-S
842A-1A-S
842-1C-S
842A-1C-S
Ordering Information
842
1
1. 842
-
2
1C
3
-
C
4
5
4. C
V
S
5.
-- Flux tight
-- Sealed type
-- Sealed type washable
-- Coil voltage (please refer to the
coil rating data for the availability)
-- Basic series designation
2. Blank -- Standard type
A
-- Different terminal layout
3. 1A
1B
1C
-- Single pole normally open
-- Single pole normally closed
-- Single pole double throw
Contact Rating
Resistive load
3A 125VAC , 3A 28VDC
1A 125VAC , 1A 28VDC
( )
Coil Rating (DC)
Rated
voltage
(V)
3
5
6
9
12
24
Rated current
10% at 23°C
(mA)
66.7
44.7
33.3
22.5
17.1
8.6
Coil resistance Max. continuous
10% at 23°C
( )
45
120
180
400
700
2,800
160% of
rated
voltage
75% of
rated
voltage
10% of
rated
voltage
approx. 0.2W
voltage
at 75°C
Pick up
Drop out
Power consumption
at rated
voltage
voltage(Max.) voltage(Min.)
at 23°C
at 23°C
29
SONG CHUAN
842
Specification
Contact material
Contact resistance
Operate time
Release time
(1)
(1)
(1)
(1)
AgNi alloy
100m
Max. (1A/6VDC by 4 pipes m
meter)
10ms Max.
5ms Max.
100M
Min. (DC 500V)
:
AC500V, 50/60Hz 1 min.
842
:
AC 500V, 50/60Hz 1 min.
842A
:
AC 1000V, 50/60Hz 1 min.
Operating extremes
10 50H
Z
, amplitude 1.5 mm
10 50H
Z
, amplitude 1.5 mm
10G
100G
10,000,000 operations
(frequency 18,000 operations/hr)
Insulation resistance
Between open contact
Dielectric strength
(1)
Between contact and coil
Vibration resistance
Damage limits
Operating extremes
Shock resistance
Damage limits
Mechanical
Life expectancy
Electrical
Operating ambient temperature
Weight
Note
(1) initial value
30,000 operations
(
300,000 operations)
(frequency 1,800 operations/hr)
-25
+75°C
Approx. 4g
Safety Approval
Certified
File No.
UL / CUL
E74321
Safety Approval rating
UL / CUL
3A 125VAC/30VDC
Outline Dimensions
15.7MAX
(0.618)
10.9MAX
(0.429)
12MAX
0.6
0.3
3
(0.012)
(0.024)
(0.010)
0.25
2.54
(0.100)
(0.118)
(0.472)
7.62
(0.300)
1.4
(0.055)
12.7
(0.500)
30
SONG CHUAN
842
Wiring Diagram
BOTTOM VIEW
842
842A
PC Board Layout
BOTTOM VIEW
842
(0.300)
842A
7.62
10.16
(0.400)
3A
30
25
20
15
10
5
1-6
(0.039)
1-5
(0.039)
2.54
(0.100)
10.16
(0.400)
2.54
(0.100)
Engineering Data
Coil temperature rise
50
45
50
45
Coil temperature rise
)
)
40
35
30
25
20
15
10
5
Temperature rise (
Temperature rise (
3A
40
35
2A
1A
2A
1A
60
80
100
120
140
160
180
60
80
100
120
140
160
180
% of Nominal Coil Voltage (at 23
)
% of Nominal Coil Voltage (at 75
)
Life expectancy
10
7
Operate time/Release time
10
9
Operate time
Number of operations
8
6
max
Time (ms)
10
28VDC
7
6
5
min
120VAC
10
5
4
3
avg
2
1
0
Release time
min
80
90
100
max
avg
10
4
70
110 120 130 140 150 160 170 180
0
0.5
1
2
3
4
5
AC/DC resistive load/Switching current(A)
% of Nominal coil voltage (at 23
)
(0.300)
7.62
————
All specifications subject to change.
Please contact Song Chuan for update.
————
31
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