RA
MICROWAVE RELAY
FOR ATTENUATOR
CIRCUIT
9.7
.382
5.9
.232
RA-RELAYS
line in the base circuit design which
spares the labor of machining the base.
3. Low profile small type
9.7(W)
×
14.7(L)
×
5.9(H) mm
.382(W)
×
.579(L)
×
.232(H) inch
4. High sensitivity: 140 mW nominal
operating power
5. High contact reliability
Electrical life: Min. 10
7
(10mA 10V DC)
14.70
.579
mm
inch
FEATURES
1. High frequency characteristics
(Impedance 50
Ω
, ~1.0GHz)
• Insertion loss; Max. 0.3dB
• Isolation; Min. 20dB (Between open
contacts)
Min. 30dB (Between contact
sets)
• V.S.W.R.; Max. 1.2
2. Surface mount terminal
This relay is a surface-mounted model
with excellent high-frequency proper-
ties. In addition, it can use a microstrip
SPECIFICATIONS
Contact
Arrangement
Contact material
Initial contact resistance
Contact rating (resistive)
Rating
Contact carrying power
Max. switching voltage
Max. switching current
Between
open con-
tacts
Isolation
Between
contact
sets
Insertion loss
V.S.W.R.
Input power
Single side stable
Nominal
operating
power
1 coil latching
2 coil latching
Mechanical (at 180 cpm)
10mA 10 V
DC(resis-
tive load)
Electrical
(at 20 cpm) 1A 30 V DC
(resistive
load)
2 Form C
Gold-clad silver alloy
Max. 75m
Ω
10mA 10 V DC
1A 30 V DC
Max. 3W(at 1.0GHz, imped-
ance 50
Ω
, V.S.W.R. max.1.2)
30 V DC
1A
Min. 20dB
Characteristics
Initial insulation resistance *
1
Between open con-
tacts
Between contact
sets
Initial breakdown
2
voltage *
Between contact
and coil
Between contact
and earth terminal
Operate time [Set time] *
3
(at 20
°
C)
Release time (without diode) [Reset time]
*
3
(at 20
°
C)
Temperature rise (at 20
°
C) *
4
Functional *
5
Shock resistance
Destructive *
6
Functional *
7
Vibration resistance
Destructive
Conditions for oper-
Ambient temp
ation, transport and
storage *
8
(Not freezing and
Humidity
condensing at low
temperature)
Unit weight
Remarks
10
7
* Specifications will vary with foreign standards certification ratings.
*
1
Measurement at same location as “Initial breakdown voltage” section.
*
2
Detection current: 10mA
*
3
Nominal operating voltage applied to the coil, excluding contact bounce time.
*
4
By resistive method, nominal voltage applied to the coil: 3W contact carrying
power: at 1.0GHz, Impedance 50
Ω
, V.S.W.R. Max.1.2
*
5
Half-wave pulse of sine wave: 11ms, detection time: 10
µ
s.
*
6
Half-wave pulse of sine wave: 6ms
*
7
Detection time: 10
µ
s
*
8
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61)
Min. 100 M
Ω
(at 500 V DC)
750 Vrms for 1 min.
1,000 Vrms for 1 min.
1,000 Vrms for 1 min.
1,000 Vrms for 1 min.
Max. 4ms (Approx. 2ms)
[Max. 4ms (Approx. 2ms)]
Max. 4ms (Approx. 1ms)
[Max. 4ms (Approx. 2ms)]
Max. 60
°
C
500 m/s
2
1,000 m/s
2
10 to 55 Hz at double
amplitude of 3mm
10 to 55 Hz at double
amplitude of 5mm
–40
°
C to +85
°
C
–40°F to +185°F
5 to 85% R.H.
Approx. 2g
.07oz
High fre-
quency
character-
istics
(~1GHz,
Imped-
ance 50
Ω
)
Min. 30dB
Max. 0.3dB
Max. 1.2
Max. 3W(at 1.0GHz, imped-
ance 50
Ω
, V.S.W.R. max.1.2)
140mW (1.5 to 12V)
200mW (24V)
300mW (48V)
70 mW (1.5 to 12V)
100mW (24V)
140mW (1.5 to 12V)
200mW (24V)
10
8
Expected
life (min.
operation)
10
5
TYPICAL APPLICATIONS
• Measurement instruments
Oscilloscope attenuator circuit
ORDERING INFORMATION
Ex.
A
RA
2
0
0
A
03
Coil voltage, V DC
1H: 1.5
03: 3
4H: 4.5
05: 5
06: 6
09: 9
12: 12
24: 24
48: 48
Product name Contact arrangement Operating function Type of operation Terminal shape
RA
2: 2 Form C
0: Single side stable 0: Standard
1: 1 coil latching
type
2: 2 coil latching
(B.B.M)
A: Surface-mount
terminal
Note: Standard packing; Carton: 40 pcs. Case 1,000 pcs.
80
RA
TYPES ANE COIL DATA (at 20°C
68°F)
• Single side stable type
Part No.
ARA200A1H
ARA200A03
ARA200A4H
ARA200A05
ARA200A06
ARA200A09
ARA200A12
ARA200A24
ARA200A48
Nominal
voltage,
V DC
01.5
03.0
04.5
05.0
06.0
09.0
12.0
24.0
48.0
Pick-up voltage,
V DC (max.)
(initial)
1.125
2.250
3.375
3.750
4.500
6.750
90.00
18.0000
36.0000
Drop-out
voltage, V DC
(min.)(initial)
0.15
0.30
0.45
0.50
0.60
0.90
1.20
2.40
4.80
Coil resistance,
Ω
(
±
10%)
00.16.0
00.64.3
0.1450
0.1780
0.2570
0.5790
1,028.0
2,880.0
7,680.0
Nominal
operating current,
mA (
±
10%)
93.8
46.7
31.0
28.1
23.3
15.5
11.7
08.3
06.3
Nominal
operating power,
mW
140
140
140
140
140
140
140
200
300
Max. allowable
voltage, V DC
2.25
4.50
6.75
7.50
90.0
13.50
180.0
360.0
57.60
• 1 coil latching type
Part No.
ARA210A1H
ARA210A03
ARA210A4H
ARA210A05
ARA210A06
ARA210A09
ARA210A12
ARA210A24
Nominal
voltage,
V DC
01.5
03.0
04.5
05.0
06.0
09.0
12.0
24.0
Set voltage,
V DC (max.)
(initial)
1.125
2.250
3.375
3.750
4.500
6.750
9.000
18.000
Reset voltage,
V DC (max.)
(initial)
01.125
02.250
03.375
03.750
04.500
06.750
09.000
18.000
Coil resistance,
Ω
(
±
10%)
0.032.0
0.128.6
0.289.3
0.357.0
0.514.0
1,157.0
2,057.0
5,760.0
Nominal
operating current,
mA (
±
10%)
46.9
23.3
15.6
14.0
11.7
07.8
05.8
04.2
Nominal
operating power,
mW
070
070
070
070
070
070
070
100
Max. allowable
voltage, V DC
2.25
4.50
6.75
7.50
9.00
13.50
18.00
36.00
• 2 coil latching type
Part No.
ARA220A1H
ARA220A03
ARA220A4H
ARA220A05
ARA220A06
ARA220A09
ARA220A12
ARA220A24
Nominal
voltage,
V DC
01.5
03.0
04.5
05.0
06.0
09.0
12.0
24.0
Set voltage,
V DC (max.)
(initial)
01.125
02.250
03.375
03.750
04.500
06.750
09.000
18.000
Reset voltage,
V DC (max.)
(initial)
01.125
02.250
03.375
03.750
04.500
06.750
09.000
18.000
Coil resistance,
Ω
(
±
10%)
.0016.0
.0064.3
.0145.0
.0178.0
.0257.0
.0579.0
1,028.0
2,880.0
Nominal
operating current,
mA (
±
10%)
93.8
46.7
31.0
28.1
23.3
15.5
11.7
08.3
Nominal
operating power,
mW
140
140
140
140
140
140
140
200
Max. allowable
voltage, V DC
2.25
4.50
6.75
7.50
9.00
13.50
18.00
36.00
DIMENSIONS
Suggested Mounting Pads (Top view)
Single side stable
14.30
.563
12.90
.508
1.0
.039
2.94
.116
0.3
.012
14.0
.551
2.54
.100
2.00
.079
9.56
8.90
.376
.350
12.50
.492
for glue pad
2.00
.079
12.40
.488
14.90
.587
mm
inch
1 coil latching
1.0
.039
2.94
.116
0.3
.012
14.0
.551
2.54
.100
2.00
.079
9.56
8.90
.376
.350
12.50
.492
for glue pad
2.00
.079
12.40
.488
14.90
.587
earth
2 coil latching
2.54
.100
14.0
.551
1.0
.039
2.00 2.94
.079 .116
9.56
8.90
.376
.350
12.50
.492
for glue pad
2.00
.079
14.90
.587
earth
0.3
.012
14.70
.579
0~0.30
0~.012
5.90
.232
0.50
.020
9.70
.382
0.25
.010
7.62
.300
11.5±0.5
.453±.020
earth
Soldering with
PC board earth
(4 ribs)
2.54
.100
Tolerance: ±0.1
±.004
Schematic (Top view)
Single side stable
10 9 8 7 6
1 coil latching
10 9 8 7 6
2 coil latching
10 9 8 7 6
Tolerance: ±0.3
±.012
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
Direction indication
(Deenergized condition)
(Reset condition)
(Reset condition)
81
RA
REFERENCE DATA
1. High frequency characteristics
Sample: ARA200A12
Measuring method: Measured with HP network analyzer (HP8753C).
• Insertion loss
0
COM-NO
• Isolation
0
COM-NC
• V.S.W.R.
1.5
Insertion loss, dB
0.2
0.3
0.4
Isolation, dB
COM-NC
20
COM-NO
V.S.W.R.
30
40
1.4
1.3
0.6
60
CONTACT sets
1.2
COM-NC
1.1
COM-NO
300kHz
0.5GHz
Frequency
1.0GHz
0.8
80
1.0
300kHz
0.5GHz
Frequency
1.0GHz
100
300kHz
0.5GHz
Frequency
1.0GHz
1.0
NOTES
1. Coil operating power
Pure DC current should be applied to the
coil. The wave form should be rectangu-
lar. If it includes ripple, the ripple factor
should be less than 5%.
However, check it with the actual circuit
since the characteristics may be slightly
different. The nominal operating voltage
should be applied to the coil for more
than 10 ms to set/reset the latching type
relay.
2. Coil connection
When connecting coils, refer to the wiring
diagram to prevent mis-operation or mal-
function.
3. External magnetic field
Since RA relays are highly sensitive po-
larized relays, their characteristics will be
affected by a strong external magnetic
field. Avoid using the relay under that
condition.
4. Cleaning
For automatic cleaning, the boiling meth-
od is recommended. Avoid ultrasonic
cleaning which subjects the relays to high
frequency vibrations, which may cause
the contacts to stick.
It is recommended that alcoholic solvents
be used.
5. Soldering
Manual soldering shall be performed un-
der following condition.
Tip temperature: 280°C to 300°C
.536°F
to 572°F
Wattage: 30 to 60W
Soldering time: within 5s
In case of automatic soldering, the follow-
ing conditions should be observed
1) Position of measuring temperature
1.0mm
.039inch
B
A
A: Surface of PC board where relay is mounted.
B: Above the PC board surface.
2) IR (infrared reflow) soldering method
A:
B:
T
5
T
4
T
3
T
2
T
1
t
1
T
1
=150°C
302°F
T
2
=160°C
320°F
T
3
=183°C
361°F
T
4
=245°C
473°F
T
5
=270°C
518°F
t
2
t
3
t
4
t
5
t
2
- t
1
= 80 to 120 s
t
5
- t
3
= 30 to 40 s
t
4
= 170 to 190 s
Temperature rise of relay itself may vary
according to the mounting level or the
heating method of reflow equipment.
Therefore, please set the temperature of
soldering portion of relay terminal and
the top surface of the relay case not to
exceed the above mentioned soldering
condition.
It is recommended to check the tempera-
ture rise of each portion under actual
mounting condition before use.
The soldering earth shall be performed
by manual soldering.
For Cautions for Use, see Relay Technical Information (Page 48 to 76).
82
9/1/2000
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