TESTING
SX
HIGHSENSITIVITYRELAY
WITH GUARANTEED LOW
LEVEL SWITCHING
CAPACITY
SX-RELAYS
FEATURES
1. High contact reliability over a long
life has been made possible for low
level loads.
Using a low level load (1 mV 10µA to 10 V
10 mA) 107 operations were achieved with
a static contact resistance of Max. 100
mΩ (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).
7.4
2. High sensitibity of 50 mW
.291
15.0
.591
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.
8.2
.323
7.4
.291
15.0
.591
3. Low thermal electromotive force
Reducing the heat from the coil enables a
thermal electromotive force of 3 µV or
less.
Max. 10.0
.394
mm inch
SPECIFICATIONS
Contact
Characteristics
Arrangement
2 Form C
Min. 10,000MΩ
(at 500V DC)
Initial insulation resistance*2
Static contact resistance (During initial and
electric life tests)*1
(By voltage drop of 20 mV 1 mA [1kHz])
Max. 100 mΩ
Between open contacts
750 Vrms for 1min.
1,000 Vrms for 1min.
1,800 Vrms for 1min.
Initial
breakdown Between contact sets
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)
voltage*3
Between contact and coil
Max. 5 ms (Approx. 3 ms)
[Max. 5 ms (Approx. 3 ms)]
Operate time [Set time]*4 (at 20°C)
Max. 1 Ω
Release time (without diode)
[Reset time]*4 (at 20°C)
Temperature rise*5 (at 20°C)
Max. 5 ms (Approx. 1.5 ms)
[Max. 5 ms (Approx. 3 ms)]
Contact material
Gold-clad silver alloy
10 mA 10 VDC
Max. 50°C
Nominal switching capacity
(resistive load)
Functional*6
Destructive*7
Min. 750 m/s2{75G]
Min. 1,000 m/s2{100G]
Shock resistance
Max. switching power
0.1 W
10 VDC
Rating
Max. switching voltage
10 to 55 Hz at double
amplitude of 3.3 mm
Functional*8
Vibration resistance
Max. switching current
Min. switching capacity**1
10 mA DC
10 µA 1 mVDC
10 to 55 Hz at double
amplitude of 5 mm
Destructive
50mW (1.5 to 12 V DC)
70mW (24 V DC)
Single side stable
Nominal
operating
power
Conditions for operation, Ambient
–40°C to 70°C
–40°F to 158°F
transport and storage*9
(Not freezing and con-
densing at low tempera-
ture)
temperature
35mW (1.5 to 12 V DC)
50mW (24 V DC)
1 coil latching
Humidity
5 to 85% R.H.
70mW (1.5 to 12 V DC)
150mW (24 V DC)
2 coil latching
Unit weight
Approx. 2 g .071 oz
Thermal electromotive force, max.
Remarks:
3 µV
5 × 107
107
(at nominal voltage applied to the coil**2)
* Specifications will vary with foreign standards certification ratings.
*1 By nominal switching capacity: No. of operations: 107
*2 Measurement at same location as "Initial breakdown voltage" section.
*3 Detection current: 10mA.
Mechanical (at 750 cpm)
Expected
life (min.
operations)
Electrical (at 750 cpm)
(10 mA 10 V DC resistive load)
*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.
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.
*6 Half-wave pulse of sine wave: 6 ms; detection time: 10µs.
*7 Half-wave pulse of sine wave: 6 ms.
*8 Detection time: 10µs.
**2 For single side stable only.
*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