VDE
IC DRIVABLE PC BOARD
RELAY FOR FIELD LOAD
SWITCHING
FEATURES
14
.551
31
1.220
ST-RELAYS
• High switching capacity and high
sensitivity in subminiature size
150 mW pick-up, 8 A inrush capacity:
51 A for 1a1b, 35 A for 2a
• High shock and vibration resistance
Shock: 20 G, Vibration: 10 to 55 Hz at
double amplitude of 2 mm
• Sealed to meet the combination process of automatic wave soldering
and cleaning needs
• Latching types available
11.3
.445
mm inch
SPECIFICATIONS
Characteristics (at 25°C 77°F 50% Relative humidity)
Contacts
Arrangement
Contact material
Initial contact resistance, max.
Max. switching power
Rating
Max. switching voltage
(resistive)
Max. switching current
HP rating
Inrush current capability
Mechanical (at 180 cpm)
8 A 250 V AC (resistive)
Expected
5 A 30 V DC (resistive)
life (min.
operations) Electrical 3 A 100 V AC (lamp)
1 A 100 V AC (lamp)
1 Form A
2 Form A
1 Form B
Gold flash over silver alloy
30 mΩ
2,000 VA, 150 W
380 V AC, 30 V DC
8A
1/4 HP 125, 250 V AC
51 A (TV-3 equivalence) for 1a1b
35 A (TV-1 equivalence) for 2a
107
105
2 × 105
3 × 104
—
—
3 × 104
Coil (polarized) (at 25°C 77°F)
Single side stable
Latching
Nominal operating power
Nominal set and reset power
Approx. 240 mW
Approx. 240 mW
Remarks
* Specifications will vary with foreign standards certification ratings.
*1 Measurement at same location as "Initial breakdown voltage" section
*2 Detection current: 10 mA
*3 Wave is standard shock voltage of ±1.2 × 50µs according to JEC-212-1981
*4 Excluding contact bounce time
*5 Half-wave pulse of sine wave: 11ms; detection time: 10µs
*6 Half-wave pulse of sine wave: 6ms
*7 Detection time: 10µs
*8 Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61).
Max. operating speed
Initial insulation resistance*1
Between contact sets
Initial
Between open contacts
Between contacts and coil
Surge voltage between coil and
contact*3
Operate time*4
(at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
Set time*4 (latching)
(at nominal voltage)
Reset time*4 (latching)
(at nominal voltage)
Temperature rise
(at 60°C)
Functional*5
Shock
resistance
Destructive*6
breakdown
voltage*2
Vibration
resistance
Functional*7
Destructive
Conditions for operation, Ambient
transport and storage*8
temp.
(Not freezing and condensHumidity
ing at low temperature)
Unit weight
20 cpm (at rated load)
1,000 MΩ (at 500 V DC)
2,000 Vrms
1,200 Vrms
3,750 Vrms
Min. 6,000 V
Max. 15 ms (Approx. 10 ms)
Max. 10 ms (Approx. 8 ms)
Max. 10 ms (Approx. 8 ms)
Max. 10 ms (Approx. 8 ms)
Max. 55°C with nominal coil voltage
and at 8 A switching current
Min. 196 m/s2 {20 G}
Min. 980 m/s2 {100 G}
117.6 m/s2 {12 G}, 10 to 55 Hz
at double amplitude of 2 mm
176.4 m/s2 {18 G}, 10 to 55 Hz
at double amplitude of 3 mm
–40°C to +60°C
–40°Fto +140°F
5 to 85% R.H.
Approx. 10g .353 oz
TYPICAL APPLICATIONS
Sequence controllers, facsimiles, telephone controls, remote
control security devices and security equipment.
ORDERING INFORMATION
Ex. ST
1
L2
DC48V
Contact arrangement
Operating function
Coil voltage
1: 1 Form A 1 Form B
2: 2 Form A
Nil: Single side stable
L2: 2 coil latching
DC 3, 5, 6, 9, 12,
24, 48 V
(Note) Standard packing: Carton; 50 pcs., Case; 500 pcs.
249
ST
TYPES AND COIL DATA (at 20°C 68°F)
Single side stable
Part No.
1 Form A
2 Form A
1 Form B
ST1-DC3V
ST2-DC3V
ST1-DC5V
ST2-DC5V
ST1-DC6V
ST2-DC6V
ST1-DC9V
ST2-DC9V
ST1-DC12V
ST2-DC12V
ST1-DC24V
ST2-DC24V
ST1-DC48V
ST2-DC48V
Nominal
voltage,
V DC
Pick-up voltage,
V DC (max.)
Drop-out
voltage,
V DC (min.)
Maximum
allowable voltage,
V DC (60°C 140°F)
Coil resistance,
Ω (±10%)
Nominal
operating
current, mA
3
5
6
9
12
24
48
2.4
4.0
4.8
7.2
9.6
19.2
38.4
0.3
0.5
0.6
0.9
1.2
2.4
4.8
4.5
7.5
9.0
13.5
18.0
36.0
72.0
38
105
150
360
600
2,400
9,000
75
47
40
25
20
10
4.7
Nominal
voltage,
V DC
Set and reset
voltage,
V DC (max.)
Maximum allowable voltage,
V DC (60°C 140°F)
Coil resistance,
Ω (±10%)
Nominal
operating
current, mA
3
5
6
9
12
24
48
2.4
4.0
4.8
7.2
9.6
19.2
38.4
4.5
7.5
9.0
13.5
18.0
36.0
72.0
40
110
155
360
640
2,400
10,200
75
47
37.5
25
18.8
9.8
4.7
2 coil latching
Part No.
1 Form A
2 Form A
1 Form B
ST1-L2-DC3V
ST2-L2-DC3V
ST1-L2-DC5V
ST2-L2-DC5V
ST1-L2-DC6V
ST2-L2-DC6V
ST1-L2-DC9V
ST2-L2-DC9V
ST1-L2-DC12V
ST2-L2-DC12V
ST1-L2-DC24V
ST2-L2-DC24V
ST1-L2-DC48V
ST2-L2-DC48V
DIMENSIONS
mm inch
PC board pattern
(Copper-side view)
14
.551
31.0
1.220
2 coil latching
types only.
11.0
.433
0.3
.012
3.5 .138
7.62
.300
10.16
.400
7.62
.300
10.16
.400
Schematic (Bottom view)
Single side stable
1a1b
2a
1
–
8
+
7
2.54
.100
1
8
2
3
8-DIA. 1.4
.055
4
Tolerance: ±0.1 ±.004
1
5
8
–
+
7
6
4
5
(Deenergized condition)
2 coil latching
2.54
.100
5
7 6
6
4
1a1b
1
General tolerance: ±0.2 ±.008
– +
8
2
3
7
6
2a
+ –
4
1
5
8
– +
2
3
7
6
+ –
4
5
(Reset condition)
Diagram shows the "reset" position when terminals 3 and 4
are energized. Energize terminals 1 and 2 to transfer contacts.
Diagram shows the "reset" position when terminals 3 and 4
are energized. Energize terminals 1 and 2 to transfer contacts.
REFERENCE DATA
1. Max. switching power
2. Life curve
3. Coil temperature rise
Sample: ST1-DC24V
Current, A
AC
inductive load
(cosϕ =0.4)
2
1
DC resistive load
Life, 10 k operations
10
5
60
1,000
500
200
AC 250 V, 125 V resistive load
100
AC 250 V, 125 V inductive load
(Pf = 0.4)
50
0.5
Temperature rise, °C
AC resistive load
50
Contact current
8A
5A
0A
40
30
20
20
0.1
10
20
50
100 200 300
Voltage, V
250
10
10
0.2
1
2
3
4
5
6
7
Current, A
8
9 10
0
0.1
0.2
0.3
0.4
0.5
Coil operating power, W
ST
4. Influence of adjacent mounting
5. Max. ambient temperature by operating
power
Sample: ST1-DC24V
6. Contact reliability
(%) 99.9
99.8
ST-Relay
99.0
. 1.0
250 V AC cos ϕ =
.
95.0
90.0
0.33 Hz
80.0
70.0
60.0
50.0
40.0
250 V AC
25.0 30.0
20.0
15.0
10.0
5.0
4.0
3.0
2.0
8A
10 A
1.5
1.0
m = 3.5
m = 3.9
4
η = 16.8×10 η = 3.3×105
0.5
0.4 0.3
ρ0.95 = 7.7×104 ρ0.95 = 1.4×105
0.2
0.15
0.1
0.1 0.2 0.3 0.5 0.7 0.9 2.0 3.0 5.07.0 9.0
0.4 0.6 0.8 1.0
No. of operations, ×105
120
110
10
Max. temperature, °C
Rated of change, %
20
Drop-out
0
Pick-up
100
–10
90
80
70
60
50
No load
40
8 A carrying
30
(1)
–20
(2)
20
(3)
10
(1) & (3) relays are energized.
5
10
15
20
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
Inter-relay distance, mm
Operating power, mW
ST relay socket
Specifications
Breakdown voltage
Insulation resistance
Heat resistance
Max. continuous current
Relay insertion life
ST-SS
Solder terminal socket
ST-PS
PC board terminal socket
ST-PS
DIMENSIONS
4,000 Vrms Coil/Contacts
2,000 Vrms Contacts/Contacts
More than 1,000 MΩ between terminals
150°C (302°F) for 1 hr
10 A
15 times
ST-SS
mm inch
4
.158
4
.158
16.4
.646
7.62
.300
1.05
.041
10.16
.400
0.3
.012
4.3
.169
0.27
.011
7.62
.300
31.6
1.244
10.16
.400
14.6
.575
16.4
.646
0.3
.012
5.3
.209
5.5
.217
7.62
.300
35.4
1.394
8
7
6
5
10.16
.400
31.6
1.244
35.4
1.394
2.3
.090
0.27
.011
2
3
8
7
6
5
1
2
3
4
15.0±0.2
.591±.008
1. PC board mounting method
PC board pattern
8
7
6
14.6
.575
16.6
.654
4
Precautions for use (socket)
Contact
terminal
interval
(2) Insert the relay all the way in, so it is securely in place.
32.5±0.1
1.280±.004
5
Press
Claw for chassis
fastening
Hinge
mechanism
A side
Coil
terminal
interval
1
8-1.5 DIA.
8-.060 DIA.
2
3
2.54
.100
4
5.5
.217
7.62
.300
16.6
.654
1
10.16
.400
2.54
.100
The terminal configuration is symmetrical
on the left and right, so an arrow mark ;
is stamped on the socket to prevent misinsertion. We recommend printing the
same arrow mark ; on the component
mounting side (side opposite from pattern) of the PC board. In this case, the terminal configuration becomes the terminal
nos. noted near the drilling holes.
2. Chassis cutout
Chassis cutting dimensions
Chassis t = 0.6 to 2.2
.024 to .087
If the chassis hole is punched with a
press, set so the release R on the front
side (A side).
The range for chassis thickness is 0.6 to
2.2 mm .024 to .087 inch .
3. Relay mounting and removal
(1) Align the directions of the relay and socket.
Relay
(3) Press the part indicated by A in the B direction, and fasten by placing the hook on the relay.
Relay case
cross-section
B
(Before fastening)
A
(Fastening complete)
(4). When removing the relay, completely release the hooks on both sides and pull the relay
out.
For Cautions for Use, see Relay Technical Information (Page 48 to 76).
9/1/2000
All Rights Reserved, © Copyright Matsushita Electric Works, 251
Ltd.
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