Datasheet ST1-DC5V-F, ST2-DC12-F Specification

ST

IC DRIVABLE PC BOARD
RELAY FOR FIELD LOAD

SWITCHING

31

1.220

14

.551

11.3

.445

mm inch

SPECIFICATIONS

Contacts

Arrangement

Contact material Gold flash over silver alloy
Initial contact resistance, max. 30 mΩ

Max. switching power 2,000 VA, 150 W

Rating
(resistive)

HP rating 1/4 HP 125, 250 V AC

Inrush current capability

Expected
life (min.
operations)

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

#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.

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 6. Conditions for operation, transport and storage mentioned in

*

AMBIENT ENVIRONMENT

Max. switching voltage 380 V AC, 250 V DC
Max. switching current 8 A
Min. switching capacity

Mechanical (at 180 cpm) 10

8 A 250 V AC (resistive)

Electrical

5 A 30 V DC (resistive)
3 A 100 V AC (lamp)
1 A 100 V AC (lamp)

#1

51 A (TV-3 equivalence) for 1a1b

FEATURES

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

• Latching types available

1 Form A
1 Form B

100 mA, 5 V DC

35 A (TV-1 equivalence) for 2a

4

3 × 10

—3 × 10

10

2 × 10

2 Form A

7

5

5

—

4

VDE

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

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

Max. operating speed 20 cpm (at rated load)

Initial insulation resistance*

Initial
breakdown
voltage*

Surge voltage between coil and
contact*

Operate time*
(at nominal voltage)

Release time (without diode)*
(at nominal voltage)

Set time*
(at nominal voltage)

Reset time*
(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)

Unit weight Approx. 10g .353 oz

Between contact sets 2,000 Vrms

Between open contacts 1,200 Vrms

2

Between contacts and coil 3,750 Vrms

3

4

4

(latching)

4

(latching)

1

4

Functional*

Destructive*

Functional*

Destructive

Ambient

8

temp.

Humidity 5 to 85% R.H.

5

7

1,000 MΩ (at 500 V DC)

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}

6

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/s
at double amplitude of 3 mm

–40°C to +60°C

–40°Fto +140°F

Min. 6,000 V

2

{18 G}, 10 to 55 Hz

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

(Notes) 1. Standard packing: Carton; 50 pcs., Case; 500 pcs.

2. 1 coil latching type available.

1 L2 DC48V

Operating function Coil voltage

Nil: Single side stable
L2: 2 coil latching

All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.

DC 3, 5, 6, 9, 12,

24, 48 V

14

5678

– +

12

– +

34

+ –

5678

Ω ( ±

Ω ( ±

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

Single side stable

Part No.

1 Form A
1 Form B

2 Form A

ST1-DC3V ST2-DC3V 3 2.4 0.3 4.5 38 78.9

ST1-DC5V ST2-DC5V 5 4.0 0.5 7.5 105 47.6

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 5.3

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,

10%)

Nominal

operating

current, mA

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 45.5

ST1-L2-DC6V ST2-L2-DC6V 6 4.8 9.0 155 38.7

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 10

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

140°F

)

Coil resistance,

10%)

Nominal

operating

current, mA

DIMENSIONS

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

+ –

2a

ST

mm inch

REFERENCE DATA

1. Max. switching power 2. Life curve 3. Coil temperature rise

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

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

Sample: ST1-DC24V

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)

All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.

(Reset condition)

60

50

40

30

Temperature rise, °C

20

10

0

0.1 0.2 0.3 0.4 0.5

5678

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

Contact current

Coil operating power, W

8 A
5 A
0 A

ST

4. Influence of adjacent mounting

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 0.2 0.40.6 0.8 1.0 1.2 1.41.6 1.8 2.02.2 2.4

8 A carrying

Operating power, mW

No load

6. Contact reliability

99.9

(%)

95.0

80.0

60.0

40.0

25.0

15.0

0.15

4.0

1.5

0.4

99.8

99.0

90.0

70.0

50.0

30.0

20.0

10.0

ST-Relay
250 V AC cos ϕ = 1.0

0.33 Hz

250 V AC

5.0

3.0

2.0
10 A

1.0

m = 3.9
η = 16.8×10

0.5

ρ

0.3

0.2

0.1

0.95

0.1 0.2 0.3 0.5 0.7 0.9

.

.

8 A
m = 3.5

4

η = 3.3×10

4

ρ

= 7.7×10

0.4 0.6 0.81.0

0.95

2.0 3.0 5.07.0 9.0

No. of operations, ×10

5

= 1.4×10

5

5

ST relay socket

ST-SS

Solder terminal socket

DIMENSIONS

ST-PS ST-SS

7.62

.300

817

PC board terminal socket

0.3

.012

4.3

.169

1.05

.400

31.6

35.4

.041

7.62

.300

635

16.6

.654

4

10.16

1.244

1.394

2

ST-PS

0.27

.011

10.16

.400

14.6

.575

.158

5.5

.217

4

16.4

.646

Specifications

Breakdown voltage

Insulation resistance More than 1,000 MΩ between terminals

Heat resistance 150°C (302°F) for 1 hr

Max. continuous current 10 A

Relay insertion life 15 times

2.3

.090

10.16

.400

7.62

.300

817

31.6

1.244

35.4

1.394

2

7.62

.300

635

4

4,000 Vrms Coil/Contacts

2,000 Vrms Contacts/Contacts

4

.158

16.4

5.5

.217

.646

0.3

.012

5.3

.209

16.6

.654

0.27

.011

10.16

.400

14.6

.575

mm inch

Precautions for use (socket)

15.0±0.2

1. PC board mounting method

PC board pattern

Contact
terminal
interval

Coil
terminal
interval

87 65

12 34

8-1.5 DIA.

8-.060 DIA.

2.54

.100

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

32.5±0.1

1.280±.004

Press

A side

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.

.591±.008

Chassis t = 0.6 to 2.2

Relay

Claw for chassis
fastening

.024 to .087

terminal configuration becomes the
terminal nos. noted near the drilling
holes.

2. Chassis cutout

Chassis cutting dimensions

For Cautions for Use, see Relay Technical Information

All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.

(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.

Relay case

cross-section

A

B

(Fastening complete)(Before fastening)

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