SX
HIGH SENSITIVITY RELAY
WITH GUARANTEED LOW
LEVEL SWITCHING
CAPACITY
FEATURES
15.0
.591
7.4
.291
8.2
.323
TESTING
SX-RELAYS
2. High sensitibity of 50 mW
By using the highly efficient polar magnet-
ic circuit "seesaw balance armature
mechanism", a rated power consumption
of 50 mW (for single side stable type) has
been achieved.
3. Low thermal electromotive force
Reducing the heat from the coil enables a
thermal electromotive force of 3
µ
V or
less.
15.0
.591
7.4
.291
Max. 10.0
.394
1. High contact reliability over a long
life has been made possible for low
level loads.
Using a low level load (1 mV 10
µ
A to 10 V
10 mA) 10
7
operations were achieved with
a static contact resistance of Max. 100
m
Ω
(voltage drop of 20 mV, 1 mA, 1 kHz)
and a dynamic contact resistance of Max.
1
Ω
(Measurement delay 10 ms, voltage
drop of 20 mV, 1 mA, 1 kHz).
mm
inch
SPECIFICATIONS
Contact
Arrangement
Static contact resistance (During initial and
electric life tests)*
1
(By voltage drop of 20 mV 1 mA [1kHz])
Dynamic contact resistance (During initial and
electric life tests)*
1
(By voltage drop of 20 mV 1 mA[1 kHz], Mea-
surement delay 10 ms after applying nominal
coil voltage)
Contact material
Nominal switching capacity
(resistive load)
Rating
Max. switching power
Max. switching voltage
Max. switching current
Min. switching capacity**
1
Single side stable
Nominal
operating
power
1 coil latching
2 coil latching
Thermal electromotive force, max.
(at nominal voltage applied to the coil**
2
)
Expected
life (min.
operations)
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 ac-
tual load.
**
2
For single side stable only.
Characteristics
2 Form C
Max. 100 m
Ω
Initial insulation resistance*
2
Initial
breakdown
voltage*
3
Between open contacts
Between contact sets
Between contact and coil
Min. 10,000M
Ω
(at 500V DC)
750 Vrms for 1min.
1,000 Vrms for 1min.
1,800 Vrms for 1min.
Max. 5 ms (Approx. 3 ms)
[Max. 5 ms (Approx. 3 ms)]
Max. 5 ms (Approx. 1.5 ms)
[Max. 5 ms (Approx. 3 ms)]
Max. 50
°
C
Min. 750 m/s
2
{75G]
Min. 1,000 m/s
2
{100G]
10 to 55 Hz at double
amplitude of 3.3 mm
10 to 55 Hz at double
amplitude of 5 mm
–40
°
C to 70
°
C
–40
°
F to 158
°
F
5 to 85% R.H.
Approx. 2 g
.071 oz
Max. 1
Ω
Operate time [Set time]*
4
(at 20
°
C)
Release time (without diode)
[Reset time]*
4
(at 20
°
C)
Temperature rise*
5
(at 20
°
C)
Functional*
6
Shock resistance
Destructive*
7
Functional*
8
Vibration resistance
Destructive
Conditions for operation,
transport and storage*
9
(Not freezing and con-
densing at low tempera-
ture)
Unit weight
Remarks:
Ambient
temperature
Humidity
Gold-clad silver alloy
10 mA 10 VDC
0.1 W
10 VDC
10 mA DC
10
µ
A 1 mVDC
50mW (1.5 to 12 V DC)
70mW (24 V DC)
35mW (1.5 to 12 V DC)
50mW (24 V DC)
70mW (1.5 to 12 V DC)
150mW (24 V DC)
3
µ
V
5
×
10
7
10
7
Mechanical (at 750 cpm)
Electrical (at 750 cpm)
(10 mA 10 V DC resistive load)
* Specifications will vary with foreign standards certification ratings.
*
1
By nominal switching capacity: No. of operations: 10
7
*
2
Measurement at same location as "Initial breakdown voltage" section.
*
3
Detection current: 10mA.
*
4
Nominal voltage applied to the coil, excluding contact bounce time.
*
5
By resistive method, nominal voltage applied to the coil; contact carrying current:
10mA.
*
6
Half-wave pulse of sine wave: 6 ms; detection time: 10
µ
s.
*
7
Half-wave pulse of sine wave: 6 ms.
*
8
Detection time: 10
µ
s.
*
9
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61)
TYPICAL APPLICATIONS
This relay will be used for the small load
for measuring instruments or others
where a stable contact resistance is
required.
120
NAIS [ NAIS(MATSUSHITA ELECTRIC WORKS) ]
