nment method achieves, with
high-sensitivity in a small package, a
relay that can be directly controlled by a
driver chip.
RoHS Directive compatibility information
http://www.mew.co.jp/ac/e/environment/
2. Strong resistance to vibration and
shock
Use of 4G-BA technology realizes strong
resistance to vibration and shock.
3. High reliability and long life
Our application of 4G-BA technology,
along with almost perfectly complete twin
contact, ensures minimal contact bounce
and high reliability.
4. Ability to provide wide-ranging
control
Use of 4G-BA technology with gold-clad
silver alloy contacts in a twin contact
structure enables control across a broad
range from microcurrents of 100
µA 100
mV DC to 4 A 250 V AC.
5. Latching types available
With 4G-BA technology, as well as single
side stable types, convenient 2 coil
latching types for circuit memory
applications are also available.
6. Wide variety of contact formations
available
The compact size of the 4G-BA
mechanism enables the provision of
many kinds of package, including 2a2b,
3a1b, and 4a. These meet your needs
across a broad range of applications.
7. Low thermal electromotive force
relay
High sensitivity (low power consumption)
is realized by 4G-BA technology.
Separation of the coil and spring sections
has resulted in a relay with extremely low
levels of thermal electromotive force
(approx. 0.3
µV).
8. DIL terminal array
Deployed to t a 2.54 mm
.100 inch
grid,
the terminals are presented in DIL arrays
which match the printed circuit board
terminal patterns commonly in
international use.
9. Relays that push the boundaries of
relay efciency
High-density S relays take you close to
the limits of relay efciency.
TYPICAL APPLICATIONS
Telecommunications equipment, data
processing equipment, facsimiles, alarm
equipment, measuring equipment.
1. Armature mechanism has excellent
resistance to vibration and shock
The armature structure enables free
rotation around the armature center of
gravity. Because the mass is maintained
in balance at the fulcrum of the axis of
rotation, large rotational forces do not
occur even if acceleration is applied
along any vector. The mechanism has
proven to have excellent resistance to
vibration and shock. All our S relays are
based on this balanced armature
mechanism, which is able to further
provide many other characteristics.
2. High sensitivity and reliability
provided by 4-gap balanced armature
mechanism
As a (polarized) balanced armature, the
S relay armature itself has two
permanent magnets. Presenting four
interfaces, the armature has a 4-gap
structure. As a result, the rotational axis
at either end of the armature is
symmetrical and, in an energized into a
polarized state, the twin magnetic
armature interfaces are subject to
repulsion on one side and attraction on
the other. This mechanism, exclusive to
Matsushita Electric Works, provides a
highly efcient polarized magnetic circuit
structure that is both highly sensitive and
has a small form factor. Moreover,
suitability for provision with many types of
contact array and other advantages
promise to make it possible to provide
many of the various characteristics that
are coming to be demanded of relays.
1) When current is passed through the
coil, the yoke becomes magnetic and
polarized.
2) At either pole of the armature,
repulsion on one side and attraction on
the other side is caused by the interaction
of the poles and the permanent magnets
of the armature.
3) At this time, opening and closing
operates owing to the action of the
simultaneously moulded balanced
armature mechanism, so that when the
force of the contact breaker spring closes
the contact on one side, on the other
side, the balanced armature opens the
contact (2a2b).
Axis
Repulsion
Attraction
Permanent magnet
Residual plate
Attraction
Repulsion
N
S
N
S
N
S
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd. S
ORDERING INFORMATION
TYPES
Standard packing: Tube: 50 pcs.; Case: 500 pcs.
RATING
1. Coil data
1) Single side stable
Contact arrangement
Nominal coil voltage
Single side stable
2 coil latching
Part No.
Part No.
2 Form A 2 Form B
3V DC
S2EB-3V
S2EB-L2-3V
5V DC
S2EB-5V
S2EB-L2-5V
6V DC
S2EB-6V
S2EB-L2-6V
12V DC
S2EB-12V
S2EB-L2-12V
24V DC
S2EB-24V
S2EB-L2-24V
48V DC
S2EB-48V
S2EB-L2-48V
3 Form A 1 Form B
3V DC
S3EB-3V
S3EB-L2-3V
5V DC
S3EB-5V
S3EB-L2-5V
6V DC
S3EB-6V
S3EB-L2-6V
12V DC
S3EB-12V
S3EB-L2-12V
24V DC
S3EB-24V
S3EB-L2-24V
48V DC
S3EB-48V
S3EB-L2-48V
4 Form A
3V DC
S4EB-3V
S4EB-L2-3V
5V DC
S4EB-5V
S4EB-L2-5V
6V DC
S4EB-6V
S4EB-L2-6V
12V DC
S4EB-12V
S4EB-L2-12V
24V DC
S4EB-24V
S4EB-L2-24V
48V DC
S4EB-48V
S4EB-L2-48V
Type
Nominal coil
voltage
Pick-up
voltage
(at 20
°C
68
°F
)
Drop-out
voltage
(at 20
°C
68
°F
)
Nominal operating
current [
±10%]
(at 20
°C
68
°F
)
Coil resistance
[
±10%]
(at 20
°C
68
°F
)
Nominal operating
power
Coil inductance
Max. allowable
voltage
(at 40
°C
104
°F
)
Standard
3V DC
70%V or less
of nominal
voltage
(Initial)
10%V or more
of nominal
voltage
(Initial)
66.7mA
45 200mW
Approx. 23mH
5.5V DC
5V DC
38.5mA
130 192mW
Approx. 65mH
9.0V DC
6V DC
33.3mA
180 200mW
Approx. 93mH
11.0V DC
12V DC
16.7mA
720 200mW
Approx. 370mH
22.0V DC
24V DC
8.4mA
2,850 202mW
Approx. 1,427mH
44.0V DC
48V DC
5.6mA
8,500 271mW
Approx. 3,410mH
75.0V DC
Coil voltage (DC)
3, 5, 6, 12, 24, 48 V
Contact arrangement
2: 2 Form A 2 Form B
3: 3 Form A 1 Form B
4: 4 Form A
S
EB
Operating function
Nil:
L:
L2:
Single side stable
1 coil latching*
2 coil latching
Notes: 1. *1 coil latching type are manufactured by lot upon receipt of order.
2. UL/CSA approved type is standard.
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd. S
2) 2 coil latching
2. Specications
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
actual load.
*2 Refer to 6. Conditions for operation, transport and storage mentioned in AMBIENT ENVIRONMENT.
Type
Nominal coil
voltage
Set voltage
(at 20
°C
68
°F
)
Reset voltage
(at 20
°C
68
°F
)
Nominal operating
current [
±10%]
(at 20
°C
68
°F
)
Coil resistance
[
±10%]
(at 20
°C
68
°F
)
Nominal operating
power
(at 20
°C
68
°F
)
Coil inductance
Max. allowable
voltage
(at 40
°C
104
°F
)
Set coil
Reset
coil
Set coil
Reset
coil
Set coil
Reset
coil
Set coil
Reset
coil
Standard
3V DC
70%V or less
of nominal
voltage
(Initial)
70%V or less
of nominal
voltage
(Initial)
66.7mA
66.7mA
45 45 200mW
200mW
Approx.
10mH
Approx.
10mH
5.5V DC
5V DC
38.5mA
38.5mA
130 130 192mW
192mW
Approx.
31mH
Approx.
31mH
9.0V DC
6V DC
33.7mA
33.7mA
180 180 200mW
200mW
Approx.
40mH
Approx.
40mH
11.0V DC
12V DC
16.7mA
16.7mA
720 720 200mW
200mW
Approx.
170mH
Approx.
170mH
22.0V DC
24V DC
8.4mA
8.4mA
2,850 2,850 202mW
202mW
Approx.
680mH
Approx.
680mH
44.0V DC
48V DC
7.4mA
7.4mA
6,500 6,500 355mW
355mW
Approx.
1,250mH
Approx.
1,250mH
65.0V DC
Characteristics
Item
Specications
Contact
Arrangement
2 Form A 2 Form B, 3 Form A 1 Form B, 4 Form A
Initial contact resistance, max.
Max. 50 m
(By voltage drop 6 V DC 1A)
Electrostatic capacitance (initial)
Approx. 3pF
Contact material
Au clad Ag alloy (Cd free)
Thermal electromotive force (at nominal coil voltage)
(initial)
Approx. 3
µV
Rating
Nominal switching capacity (resistive load)
4 A 250 V AC, 3 A 30 V DC
Max. switching power (resistive load)
1,000 VA, 90 W
Max. switching voltage
250 V AC, 48 V DC (30 to 48 V DC at less than 0.5 A)
Max. switching current
4 A (AC), 3 A (DC)
Minimum operating power
100 mW (Single side stable, 2 coil latching)
Nominal operating power
200 mW (Single side stable, 2 coil latching)
Min. switching capacity (Reference value)*
1
100
µA 100 m V DC
Electrical
characteristics
Insulation resistance (Initial)
Min. 10,000M
(at 500V DC)
Measurement at same location as Initial breakdown voltage section.
Breakdown voltage
(Initial)
Between open contacts
750 Vrms for 1min. (Detection current: 10mA.)
Between contact sets
1,000 Vrms for 1min. (Detection current: 10mA.)
Between contact and coil
1,500 Vrms for 1min. (Detection current: 10mA.)
Temperature rise (at 20
°C
68
°F
)
Max. 35
°C
(By resistive method, nominal voltage applied to the coil; contact carrying current: 4A.)
Operate time [Set time] (at 20
°C
68
°F
)
Max. 15 ms [15 ms] (Nominal voltage applied to the coil, excluding contact bounce time.)
Release time [Reset time] (at 20
°C
68
°F
)
Max. 10 ms [15 ms] (Nominal voltage applied to the coil, excluding contact bounce time.)
(without diode)
Mechanical
characteristics
Shock resistance
Functional
Min. 490 m/s
2
(Half-wave pulse of sine wave: 11 ms; detection time: 10
µs.)
Destructive
Min. 980 m/s
2
(Half-wave pulse of sine wave: 6 ms.)
Vibration resistance
Functional
10 to 55 Hz at double amplitude of 3 mm (Detection time: 10
µs.)
Destructive
10 to 55 Hz at double amplitude of 4 mm
Expected life
Mechanical
Min. 10
8
(at 50 cps)
Electrical
Min. 10
5
(4 A 250 V AC), Min. 2
×10
5
(3 A 30 V DC) (at 20 cpm)
Conditions
Conditions for operation, transport and storage*
2
Ambient temperature: 55
°C to +65°C
67
°F to +149°F

Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Max. operating speed
20 cpm for maximum load, 50 cps for low-level load (1 mA 1 V DC)
Unit weight
Approx. 8 g
.28 oz
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd. S
REFERENCE DATA
1. Maximum switching power
2. Life c