background image

 

 249

 

ST-RELAYS

VDE

 

IC DRIVABLE PC BOARD 

RELAY FOR FIELD LOAD 

SWITCHING

 

mm 

inch

11.3

.445

14

.551

31

1.220

 

FEATURES

 

• Sealed to meet the combination pro-

cess of automatic wave soldering 

and cleaning needs

• Latching types available

• 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

 

SPECIFICATIONS

 

Contacts

Coil (polarized) (at 25

 

°

 

77

 

°

 

F

)

 

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).

 

Characteristics (at 25

 

°

 

77

 

°

 

F

 50% Relative humidity)

 

Arrangement

1 Form A  

1 Form B

2 Form A

Contact material

Gold flash over silver alloy

Initial contact resistance, max.

30 m

 

 

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

 

51 A (TV-3 equivalence) for 1a1b

 

35 A (TV-1 equivalence) for 2a

 

Expected 

life (min. 

operations)

 

Mechanical (at 180 cpm)

10

 

7

 

Electrical

8 A 250 V AC (resistive)

 

10

 

5

 

5 A 30 V DC (resistive)

 

 

×

 

 10

 

5

 

3 A 100 V AC (lamp)

 

 

×

 

 10

 

4

 

 

1 A 100 V AC (lamp)

 

 

×

 

 10

 

4

 

Single side stable

Nominal operating power

Approx. 240 mW

Latching

Nominal set and reset power

Approx. 240 mW

Max. operating speed

20 cpm (at rated load)

Initial insulation resistance*

 

1

 

1,000 M

 

 

 (at 500 V DC)

Initial 

breakdown 

voltage*

 

2

 

Between contact sets

2,000 Vrms

 

Between open contacts

 

1,200 Vrms

 

Between contacts and coil

 

3,750 Vrms

Surge voltage between coil and 

contact*

 

3

 

Min. 6,000 V

Operate time*

 

4

 

 

(at nominal voltage)

Max. 15 ms (Approx. 10 ms)

Release time (without diode)*

 

4

 

 

(at nominal voltage)

Max. 10 ms (Approx. 8 ms)

Set time*

 

4

 

 (latching) 

(at nominal voltage)

Max. 10 ms (Approx. 8 ms)

Reset time*

 

4

 

 (latching) 

(at nominal voltage)

Max. 10 ms (Approx. 8 ms)

Temperature rise 

(at 60

 

°

 

C)

Max. 55

 

°

 

C with nominal coil voltage 

and at 8 A switching current

Shock 

resistance

Functional*

 

5

 

Min. 196 m/s

 

2

 

 {20 G}

Destructive*

 

6

 

Min. 980 m/s

 

2

 

 {100 G}

Vibration 

resistance

Functional*

 

7

 

117.6 m/s

 

2

 

 {12 G}, 10 to 55 Hz 

at double amplitude of 2 mm

Destructive

176.4 m/s

 

2

 

 {18 G}, 10 to 55 Hz 

at double amplitude of 3 mm

 

Conditions for operation, 

transport and storage*

 

8

 

(Not freezing and condens-

ing at low temperature)

 

Ambient 

temp.

–40

 

°

 

C to +60

 

°

 

C

–40

 

°

 

Fto +140

 

°

 

F

Humidity

5 to 85% R.H.

Unit weight

Approx. 10g .

353 oz

 

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

Nil: Single side stable

L2: 2 coil latching

DC 3, 5, 6, 9, 12,

24, 48 V

Operating function

Coil voltage

1

L2

DC48V

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

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ST

 

 250

 

TYPES AND COIL DATA (at 20

 

°

 

68

 

°

 

F

)

 

Single side stable

2 coil latching

 

Part No.

Nominal 

voltage, 

V DC

Pick-up voltage, 

V DC (max.)

Drop-out 

voltage, 

V DC (min.)

Maximum 

allowable voltage, 

V DC (60

 

°

 

140°F

)

Coil resistance,  

 

 

 (

 

±

 

10%)

Nominal 

operating 

current, mA

1 Form A

1 Form B

2 Form A

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

Part No.

Nominal 

voltage, 

V DC

Set and reset 

voltage, 

V DC (max.)

Maximum allowable voltage, 

V DC (60

 

°

 

140°F

)

Coil resistance,  

 

 

 (

 

±

 

10%)

Nominal 

operating 

current, mA

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

 

DIMENSIONS

 

mm 

inch

General tolerance: 

 

±

 

0.2 

 

±

 

.008

31.0

1.220

11.0

.433

7.62

.300

7.62

.300

10.16

.400

8

5

4

3

2

1

7 6

10.16

.400

14

.551

0.3

.012

3.5 

.138

 

PC board pattern 

(Copper-side view)

 

Tolerance: 

 

±

 

0.1 

 

±

 

.004

2 coil latching

types only.

8-DIA. 1.4

.055

2.54

.100

2.54

.100

 

Schematic (Bottom view)

Single side stable

1a1b

2a

(Deenergized condition)

1

4

5

6

7

8

+

1

4

5

6

7

8

+

 

2 coil latching

1a1b

1

2

5

6

7

8

– +

3

4

+ –

 

(Reset condition)

 

Diagram shows the "reset" po-

sition when terminals 3 and 4 

are energized. Energize termi-

nals 1 and 2 to transfer con-

tacts.

 

2a

1

2

– +

3

4

+ –

5

6

7

8

 

Diagram shows the "reset" po-

sition when terminals 3 and 4 

are energized. Energize termi-

nals 1 and 2 to transfer con-

tacts.

 

REFERENCE DATA

 

1. Max. switching power

2. Life curve

3. Coil temperature rise

 

Sample: ST1-DC24V

10

20

50

100 200 300

0.1

0.2

0.5

1

2

5

10

Voltage, V

Current, A

AC resistive load

DC resistive load

 inductive load

AC

(cos

ϕ =0.4

)

10

20

50

100

200

500

1,000

1

2

3

4

5

6

7

8

9 10

Current, A

Life, 10 k operations

AC 250 V, 125 V resistive load

AC 250 V, 125 V inductive load

(Pf = 0.4)

0.1

0.2

0.3

0.4

0.5

60

50

40

30

20

10

0

Temperature rise, 

°

C

Coil operating power, W

5 A

0 A

Contact current

8 A

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ST

 

251

 

4. Influence of adjacent mounting

 

Sample: ST1-DC24V

 

5. Max. ambient temperature by operating 

power

6. Contact reliability

(1)

(2)

(3)

(1) & (3) relays are energized.

Rated of change, %

Inter-relay distance, mm

5

10

15

20

–20

–10

0

10

20

Drop-out 

Pick-up 

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

10

20

30

40

50

60

70

80

90

100

110

120

Max. temperature, 

°

C

Operating power, mW

No load

8 A carrying

250 V AC

0.1

0.2 0.3 0.5 0.7 0.9

0.4 0.6 0.8 1.0

2.0 3.0 5.07.0 9.0

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 

.

.

 

ST relay socket

 

ST-SS

Solder terminal socket

ST-PS

PC board terminal socket

 

Specifications

 

Breakdown voltage

4,000 Vrms Coil/Contacts

2,000 Vrms Contacts/Contacts

Insulation resistance

More than 1,000 M

 

 

 between terminals

Heat resistance

150

 

°

 

C (

302

 

°

 

F

) for 1 hr

Max. continuous current

10 A

Relay insertion life

15 times

 

DIMENSIONS

 

mm 

inch

 

ST-PS

ST-SS

31.6

1.244

35.4

1.394

16.6

.654

8

1

7

2

6

3

5

4

14.6

.575

16.4

.646

10.16

.400

1.05

.041

0.3

.012

5.5

.217

4

.158

4.3

.169

0.27

.011

10.16

.400

7.62

.300

7.62

.300

31.6

1.244

35.4

1.394

16.6

.654

8

1

7

2

6

3

5

4

14.6

.575

16.4

.646

10.16

.400

2.3

.090

0.3

.012

5.5

.217

4

.158

5.3

.209

0.27

.011

10.16

.400

7.62

.300

7.62

.300

 

Precautions for use (socket)

 

1. PC board mounting method

 

PC board pattern

The terminal configuration is symmetrical 

on the left and right, so an arrow mark 

 

;

 

 

is stamped on the socket to prevent mis-

insertion. We recommend printing the 

same arrow mark 

 

;

 

 on the component 

mounting side (side opposite from pat-

tern) of the PC board. In this case, the ter-

minal configuration becomes the terminal 

nos. noted near the drilling holes.

 

2. Chassis cutout

 

Chassis cutting dimensions

2.54

.100

8-1.5 DIA.

8-.060 DIA.

8

7

6

5

1

2

3

4

2.54

.100

Contact

terminal

interval

Coil

terminal

interval

15.0

±

0.2

.591

±

.008

32.5

±

0.1

1.280

±

.004

 

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.

Claw for chassis

fastening

Chassis t = 0.6 to 2.2

.024 to .087

Press

A side

Relay

 

(2) Insert the relay all the way in, so it is secure-

ly in place.

(3) Press the part indicated by A in the B direc-

tion, and fasten by placing the hook on the re-

lay.

(4). When removing the relay, completely re-

lease the hooks on both sides and pull the relay 

out.

Hinge

mechanism

Relay case

cross-section

B

(Fastening complete)

(Before fastening)

A

 

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

 

9/1/2000

All Rights Reserved, © Copyright Matsushita Electric Works, Ltd.

 

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