Datasheet ST2-L2-DC9V, ST2-L2-DC6V, ST2-L2-DC5V, ST2-L2-DC48V, ST2-L2-DC3V Datasheet (NAIS)

VDE

2 ×

3 ×

×

IC DRIVABLE PC BOARD
RELAY FOR FIELD LOAD

ST-RELAYS

SWITCHING

31

1.220

14

.551

11.3

.445

FEATURES

• Sealed to meet the combination pro­cess of automatic wave soldering
and cleaning needs

• Latching types available

mm inch

SPECIFICATIONS

Contacts

Arrangement
Contact material Gold flash over silver alloy

Initial contact resistance, max. 30 m Ω
Rating

(resistive)

Max. switching power 2,000 VA, 150 W
Max. switching voltage 380 V AC, 30 V DC
Max. switching current 8 A

HP rating 1/4 HP 125, 250 V AC
Inrush current capability

Mechanical (at 180 cpm) 10

Expected
life (min.
operations)

Electrical

8 A 250 V AC (resistive)
5 A 30 V DC (resistive)

3 A 100 V AC (lamp)
1 A 100 V AC (lamp)

Coil (polarized) (at 25 ° C 77 ° F)

Single side stable Nominal operating power Approx. 240 mW
Latching Nominal set and reset power 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 × 50 µ s according to JEC-212-1981

*

4

*

Excluding contact bounce time

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).

1 Form A
1 Form B

2 Form A

51 A (TV-3 equivalence) for 1a1b

35 A (TV-1 equivalence) for 2a

7

5

10

5

10

4

10

—3

—

10

4

• 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

Characteristics (at 25 ° C 77 ° F 50% Relative humidity)

Max. operating speed
Initial insulation resistance*

Initial
breakdown
voltage*

Surge voltage between coil and
contact*

Operate time*

Between contact sets

Between open contacts

2

Between contacts and coil

3

4

1

(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)
Shock

resistance

Vibration
resistance

Conditions for operation,
transport and storage*
(Not freezing and condens­ing at low temperature)

Functional*
Destructive*

Functional*

Destructive
Ambient

8

temp.
Humidity 5 to 85% R.H.

5

6

7

Unit weight Approx. 10g .353 oz

20 cpm (at rated load)

1,000 M Ω (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/s

Min. 980 m/s

117.6 m/s

2

{20 G}

2

{100 G}

2

{12 G}, 10 to 55 Hz

at double amplitude of 2 mm

176.4 m/s

2

{18 G}, 10 to 55 Hz

at double amplitude of 3 mm

–40 ° C to +60 ° C

–40 ° Fto +140 ° F

TYPICAL APPLICATIONS

Sequence controllers, facsimiles, telephone controls, remote
control security devices and security equipment.

ORDERING INFORMATION

Ex. ST

Contact arrangement

1: 1 Form A 1 Form B
2: 2 Form A

1 L2 DC48V

Operating function Coil voltage

Nil: Single side stable
L2: 2 coil latching

(Note) Standard packing: Carton; 50 pcs., Case; 500 pcs.

DC 3, 5, 6, 9, 12,

24, 48 V

249

Ω ( ±

Ω ( ±

ST

TYPES AND COIL DATA (at 20 ° C 68 ° F)

Single side stable

1 Form A
1 Form B

Part No.

2 Form A

Nominal

voltage,

V DC

Pick-up voltage,

V DC (max.)

Drop-out

voltage,

V DC (min.)

ST1-DC3V ST2-DC3V 3 2.4 0.3 4.5 38 75
ST1-DC5V ST2-DC5V 5 4.0 0.5 7.5 105 47
ST1-DC6V ST2-DC6V 6 4.8 0.6 9.0 150 40
ST1-DC9V ST2-DC9V 9 7.2 0.9 13.5 360 25
ST1-DC12V ST2-DC12V 12 9.6 1.2 18.0 600 20
ST1-DC24V ST2-DC24V 24 19.2 2.4 36.0 2,400 10
ST1-DC48V ST2-DC48V 48 38.4 4.8 72.0 9,000 4.7

2 coil latching

Part No.

1 Form A
1 Form B

2 Form A

ST1-L2-DC3V ST2-L2-DC3V 3 2.4 4.5 40 75
ST1-L2-DC5V ST2-L2-DC5V 5 4.0 7.5 110 47
ST1-L2-DC6V ST2-L2-DC6V 6 4.8 9.0 155 37.5
ST1-L2-DC9V ST2-L2-DC9V 9 7.2 13.5 360 25
ST1-L2-DC12V ST2-L2-DC12V 12 9.6 18.0 640 18.8
ST1-L2-DC24V ST2-L2-DC24V 24 19.2 36.0 2,400 9.8
ST1-L2-DC48V ST2-L2-DC48V 48 38.4 72.0 10,200 4.7

Nominal

voltage,

V DC

Set and reset

voltage,

V DC (max.)

Maximum allowable voltage,

V DC (60 ° C

DIMENSIONS

Maximum

allowable voltage,

V DC (60 ° C 140°F)

140°F

)

Coil resistance,

10%)

Coil resistance,

10%)

Nominal

operating

current, mA

Nominal

operating

current, mA

mm inch

31.0

1.220

11.0

.433

0.3

.012

3.5 .138

7.62

.300

85

10.16

.400

76

7.62

.300

4321

General tolerance: ± 0.2 ± .008

14

.551

10.16

.400

PC board pattern

(Copper-side view)

2 coil latching
types only.

8-DIA. 1.4

.055

Tolerance: ± 0.1 ± .004

2.54

.100

2.54

.100

Schematic (Bottom view)

Single side stable

1a1b 2a

14

–+

5678

(Deenergized condition)

2 coil latching

1a1b

12

–+

34

+–

5678

(Reset condition)

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

1,000

500

200

100

50

Life, 10 k operations

20
10

AC 250 V, 125 V resistive load

AC 250 V, 125 V inductive load

12345678910

Current, A

(Pf = 0.4)

10

5

2
1

Current, A

0.5

0.2

0.1

AC resistive load

AC

inductive load

(cosϕ =0.4)

DC resistive load

10 20 50 100 200 300

Voltage, V

Sample: ST1-DC24V

60

50

40

30

Temperature rise, °C

20

10

0

0.1 0.2 0.3 0.4 0.5
Coil operating power, W

14

–+

5678

2a

12–+34

Diagram shows the "reset" po­sition when terminals 3 and 4
are energized. Energize termi­nals 1 and 2 to transfer con­tacts.

Contact current

8 A
5 A
0 A

+–

5678

250

4. Influence of adjacent mounting

250 V AC

0.1 0.2 0.3 0.5 0.70.9

0.40.60.81.0

2.0 3.0 5.07.09.0

10 A
m = 3.9
η = 16.8×10

4

ρ

0.95

= 7.7×10

4

8 A
m = 3.5
η = 3.3×10

5

ρ

0.95

= 1.4×10

5

No. of operations, ×10

5

0.1

0.15

0.3

0.4

0.5

1.0

0.2

2.0

3.0

4.0

5.0

1.5

10.0

15.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

95.0

99.0

99.8

99.9

25.0

(%)

ST-Relay
250 V AC cos ϕ = 1.0

0.33 Hz

.

.

Relay case

cross-section

B

(Fastening complete)(Before fastening)

A

Sample: ST1-DC24V

20

10

0

Rated of change, %

–10

–20

Drop-out

Pick-up

(1) & (3) relays are energized.

5 101520

Inter-relay distance, mm

(1) (2) (3)

5. Max. ambient temperature by operating
power

120
110
100

90
80
70
60
50

Max. temperature, °C

40
30
20
10

0 0.20.40.6 0.8 1.0 1.2 1.4 1.6 1.82.02.2 2.4

8 A carrying

Operating power, mW

No load

6. Contact reliability

ST

ST relay socket

ST-SS

Solder terminal socket

DIMENSIONS

Specifications

Breakdown voltage
Insulation resistance More than 1,000 M Ω between terminals

Heat resistance 150 ° C (302 ° F) for 1 hr
Max. continuous current 10 A
Relay insertion life 15 times

ST-PS

PC board terminal socket

ST-PS ST-SS

4

.158

16.4

.646

0.3

7.62

.300

817

10.16

.400

31.6

1.244

35.4

1.394

2

1.05

.041

7.62

.300

635

.012

4.3

.169

16.6

.654

4

0.27

.011

10.16

.400

14.6

.575

5.5

.217

7.62

.300

8172635

10.16

.400

31.6

1.244

35.4

1.394

2.3

.090

7.62

.300

4,000 Vrms Coil/Contacts

2,000 Vrms Contacts/Contacts

mm inch

4

.158

16.4

5.5

.217

.646

0.3

.012

5.3

.209

16.6

.654

4

0.27

.011

10.16

.400

14.6

.575

Precautions for use (socket)

1. PC board mounting method

PC board pattern

Contact
terminal
interval

Coil
terminal
interval

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
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.

87 65

12 34

8-1.5 DIA.

8-.060 DIA.

on the component

;

2.54

.100

2.54

.100

;

15.0±0.2

.591±.008

32.5±0.1

1.280±.004

Press

A side

Claw for chassis
fastening

Chassis t = 0.6 to 2.2

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

.024 to .087

(2) Insert the relay all the way in, so it is secure­ly in place.

Hinge
mechanism

(3) Press the part indicated by A in the B direc­tion, and fasten by placing the hook on the re­lay.

(4). When removing the relay, completely re­lease the hooks on both sides and pull the relay
out.

2. Chassis cutout

Chassis cutting dimensions

For Cautions for Use, see Relay Technical Information (Page 48 to 76).

9/1/2000 All Rights Reserved, © Copyright Matsushita Electric Works, Ltd.

251

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