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VDE

1a1b/2a 8A polarized power

relays

ST RELAYS

6. Automatic cleaning possible

The sealed design means that these

relays can undergo immersion in

automatic washing systems and are

suitable for automatic soldering. Even

in difﬁcult environments, the contacts

remain reliable.

7. Easy to design PC board patterns

Features 4/10 dual-in-line terminals.

Because the lead spacing has a pitch

greater than 7.54 mm

.297 inch,

designers can make easy adjustments

with the width of the land size. This,

along with the large insulation

distance, simpliﬁes the drawing of PC

board patterns.

8. To improve soldering efﬁciency,

preapplication of solder to the

terminals is recommended.

9. Sockets are available.

RoHS compliant

FEATURES

1. Even with small form factor,

sensitive enough for direct IC-

driving

The dimensions of this high-density 4-

gap balanced armature are 31 mm

14 mm

11 mm

1.220 inch

.551 inch

.433 inch.

Despite this small size,

high sensitivity is achieved by a

mechanism that incorporates high-

efﬁciency polarized magnetic circuits

along with our exclusive spring

alignment method. With an minimum

operating power of about 150 mW,

nominal operating power of 240 mW,

this relay can be directly driven by

transistor or chip controllers.

2. High switching capability

High contact pressure, low contact

bounce, and forced separation

structure that radically improves

resistance to contact welding

(1 Form A 1 Form B type equivalent to

TV-3). Strong against lamp inductive

loads, maximum switching capacity

has reached 3,040 VA (8A 380V AC).

3. High breakdown voltage – Optimal

for control in 250 V power circuits

High breakdown voltage has been

achieved. Between contacts and coil of

3,750 Vrms; Surge breakdown voltage

between coil and contact of 6,000 V,

and between open contacts of 1,200

Vrms mean that these relays are

suitable even for 250 V power circuit

control.

4. Improved stability

Conforms to all types of safety

standards.

Insulating distance of more than 3 mm

secured. Complies with Japan

Electrical Appliance and Material

Safety Law requirements for operating

200 V power supply circuits, and

conforms with UL, CSA and VDE

standards.

5. Latching types available

In addition to single side stable types,

convenient 2 coil latching types with

memory functions are also available.

Moreover, we offer 2 Form A

speciﬁcations which, with double pole

switching for applications such as 250

V power circuit switching, can enable

safer designs.

ORDERING INFORMATION

Contact arrangement

1: 1 Form A 1 Form B

2: 2 Form A

Operating function

Nil: Single side stable

L2: 2 coil latching

Nominal coil voltage

DC 3, 5, 6, 9, 12, 24, 48 V

Contact material

F: AgSnO

type contact

Note: Certified by UL, CSA, VDE and SEV

ASCTB210E 201202-T

Panasonic Corporation

Automation Controls Business Unit

industrial.panasonic.com/ac/e/

TYPES

Contact arrangement

Nominal coil voltage

3V DC

5V DC

6V DC

9V DC

12V DC

24V DC

48V DC

3V DC

5V DC

6V DC

9V DC

12V DC

24V DC

48V DC

Standard packing: Carton: 50 pcs.; Case: 500 pcs.

Single side stable

Part No.

ST1-DC3V-F

ST1-DC5V-F

ST1-DC6V-F

ST1-DC9V-F

ST1-DC12V-F

ST1-DC24V-F

ST1-DC48V-F

ST2-DC3V-F

ST2-DC5V-F

ST2-DC6V-F

ST2-DC9V-F

ST2-DC12V-F

ST2-DC24V-F

ST2-DC48V-F

2 coil latching

Part No.

ST1-L2-DC3V-F

ST1-L2-DC5V-F

ST1-L2-DC6V-F

ST1-L2-DC9V-F

ST1-L2-DC12V-F

ST1-L2-DC24V-F

ST1-L2-DC48V-F

ST2-L2-DC3V-F

ST2-L2-DC5V-F

ST2-L2-DC6V-F

ST2-L2-DC9V-F

ST2-L2-DC12V-F

ST2-L2-DC24V-F

ST2-L2-DC48V-F

1 Form A 1 Form B

2 Form A

* For sockets, see page 113.

RATING

1. Coil data

1) Single side stable

Nominal coil

voltage

3V DC

5V DC

6V DC

9V DC

12V DC

24V DC

48V DC

80%V or less of

nominal voltage

(Initial)

10%V or more of

nominal voltage

(Initial)

Pick-up voltage

(at 20°C

68°F)

Drop-out voltage

(at 20°C

68°F)

Nominal operating

current

[±10%] (at 20°C

68°F)

75mA

47mA

40mA

25mA

20mA

10mA

4.7mA

Coil resistance

[±10%] (at 20°C

68°F)

38Ω

105Ω

150Ω

360Ω

600Ω

2,400Ω

9,000Ω

Nominal operating

power

Max. applied voltage

(at 20°C

68°F)

240mW

150%V of

nominal voltage

2) 2 coil latching

Nominal coil

voltage

3V DC

5V DC

6V DC

9V DC

12V DC

24V DC

48V DC

80%V or less of

nominal voltage

(Initial)

80%V or less of

nominal voltage

(Initial)

Set voltage

(at 20°C

68°F)

Reset voltage

(at 20°C

68°F)

Nominal operating

current

[±10%] (at 20°C

68°F)

Set coil

Reset coil

75mA

45mA

37.5mA

25mA

18.8mA

10mA

4.7mA

45mA

37.5mA

25mA

18.8mA

10mA

4.7mA

Coil resistance

[±10%] (at 20°C

68°F)

Set coil

40Ω

110Ω

155Ω

360Ω

640Ω

2,400Ω

10,200Ω

Reset coil

40Ω

110Ω

155Ω

360Ω

640Ω

2,400Ω

10,200Ω

Nominal operating

power

Set coil

Reset coil

Max. applied voltage

(at 20°C

68°F)

240mW

150%V of

nominal voltage

Panasonic Corporation

Automation Controls Business Unit

industrial.panasonic.com/ac/e/

ASCTB210E 201202-T

2. Speciﬁcations

Characteristics

Contact

Item

Arrangement

Contact material

Contact resistance (Initial)

Max. switching power (resistive load)

Max. switching voltage

Max. switching current

Minimum operating power

Nominal operating power

Min. switching capacity (Reference value)*

Insulation resistance (Initial)

(at 25°C, 50% relative humidity)

Breakdown voltage

(Initial)

Electrical

characteristics

Between open contacts

Between contact sets

Speciﬁcations

1 Form A 1 Form B, 2 Form A

Au-ﬂashed AgSnO

type

Max. 30 mΩ (By voltage drop 6 V DC 1A)

3,040 VA, 150 W

380 V AC, 250 V DC

150mW (Single side stable, 2 coil latching)

240mW (Single side stable, 2 coil latching)

100 mA 5V DC

Min. 1,000MΩ (at 500V DC)

Measurement at same location as “Breakdown voltage” section.

1,200 Vrms for 1 min. (Detection current: 10 mA)

2,000 Vrms for 1 min. (Detection current: 10 mA)

3,750 Vrms for 1 min. (Detection current: 10 mA)

6,000 V (Between contact and coil)

Max. 15 ms [Max. 15 ms]

(Nominal coil voltage applied to the coil, excluding contact bounce time.)

Max. 10 ms [Max. 15 ms]

(Nominal coil voltage applied to the coil, excluding contact bounce time.) (without diode)

Max. 55°C

(By resistive method, nominal voltage applied to the coil; contact carrying current: 8A.)

Min. 196 m/s

(Half-wave pulse of sine wave: 11 ms; detection time: 10µs.)

Min. 980 m/s

(Half-wave pulse of sine wave: 6 ms.)

10 to 55 Hz at double amplitude of 2 mm (Detection time: 10µs.)

10 to 55 Hz at double amplitude of 3 mm

Min. 10

(at 180 times/min.)

Min. 10

(8 A 250 V AC resistive) (ON : OFF = 1 s : 5 s)

Ambient temperature: –40°C to +60°C

–40°F to +140°F;

Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)

30 cps

Approx. 10g

.353 oz

Rating

Between contact and coil

Surge breakdown voltage (Initial)*

Operate time [Set time] (at 20°C

68°F)

Release time [Reset time] (at 20°C

68°F)

Temperature rise (coil) (at 60°C

140°F)

Shock resistance

Functional

Destructive

Functional

Destructive

Mechanical

characteristics

Vibration resistance

Expected life

Mechanical

Electrical

Conditions

Unit weight

Conditions for operation, transport and storage*

Max. operating speed

Notes: *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.

*2. Wave is standard shock voltage of

±1.2×50µs

according to JEC-212-1981

*3. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage

conditions in NOTES.

REFERENCE DATA

1. Max. switching power

AC resistive load

Temperature rise,

°C

Current, A

AC inductive

load

(cosϕ=0.4)

DC resistive

load

2. Coil temperature rise

100

60 Contact current 8A

3. Inﬂuence of adjacent mounting

Rated of change, %

-10

-20

-30

Pick-up voltage

Drop-out voltage

0.5

DC inductive

load

(L/R=40ms)

0.2

100 200 300

Voltage, V

600 1000

0.2

0.4

0.6

0.8

1.0

1.2

-40

Coil operating power, W

Inter-relay distance, mm

ASCTB210E 201202-T

Panasonic Corporation

Automation Controls Business Unit

industrial.panasonic.com/ac/e/

DIMENSIONS

(mm

inch)

CAD Data

The CAD data of the products with a

CAD Data

mark can be downloaded from: http://industrial.panasonic.com/ac/e/

External dimensions

31.0

1.220

.551

PC board pattern (Bottom view)

2 coil latching

types only.

11.0

.433

0.3

.012

3.5

.138

7.62

.300

10.16

.400

1.0

.039

7.62

.300

0.3

.012

0.6 dia.

.024 dia.

0.5

.020

1.0

.039

1.0

.039

10.16

.400

8-1.4 dia.

8-.055 dia.

2.54

.100

2.54

.100

Tolerance:

±0.1

±.004

General tolerance:

±0.5

±.020

Schematic (Bottom view)

Single side stable

1 Form A 1 Form B

2 Form A

–

2 coil latching

1 Form A 1 Form B

2 Form A

– +

+ –

– +

+ –

(Deenergized condition)

(Reset condition)

SAFETY STANDARDS

UL/C-UL (Recognized)

File No.

Contact rating

E43028

8A 250V AC

HP 125, 250V AC

5A 30V DC

CSA (Certiﬁed)

File No.

Contact rating

LR26550 8A 250V AC

HP 125, 250V AC

etc.

5A 30V DC

VDE (Certiﬁed)

File No.

Contact rating

1017

8A 250V AC (cos

=1.0)

4A 250V AC (cos

=0.4)

5A 30V DC

TV rating (UL/CSA)

File No.

Rating

UL: E43028

CSA: LR26550

—

SEV

File No.

Contact rating

98-1 10289 8A 380V AC

NOTES

1. PC board patterns for 2 coil latching

types

When applying relays in power supply

operation circuits for ﬁnished products

regulated by the Electrical Appliance and

Material Safety Law, use the pattern

shown below.

2. Soldering should be done under the

following conditions:

250°C

482°F

within 10s

300°C

572°F

within 5s

350°C

662°F

within 3s

2) For automatic cleaning, the boiling

method is recommended. Avoid

ultrasonic cleaning which subjects the

relays to high frequency vibrations, which

may cause the contacts to stick.

It is recommended that a ﬂuorinated

hydrocarbon or other alcoholic solvents

be used.

3. When using, please be aware that

the a contact and b contact sides of 1

Form A and 1 Form B types may go on

simultaneously at operate time and

release time.

Terminal No. 1

For Cautions for Use.

Panasonic Corporation

Automation Controls Business Unit

industrial.panasonic.com/ac/e/

ASCTB210E 201202-T

Mouser Electronics

Authorized Distributor

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DC48V-F ST2-DC9V-F ST2-L2-DC12V-F ST1-DC3V ST1-DC6V ST1-DC9V ST1-L2-DC12V ST1-L2-DC24V ST1-

L2-DC3V ST1-L2-DC48V ST1-L2-DC5V ST1-L2-DC6V ST1-L2-DC9V ST2-DC3V ST2-DC6V ST2-DC9V ST2-L2-

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ST2-L-DC5V ST2-L2-DC48V-F ST1-L2-DC3V-F ST1-L2-DC9V-F ST1-L2-DC6V-F ST1-L2-DC48V-F ST2-L2-

DC24V-F

参数对比

与ST1-L2-DC3V相近的元器件有：ST1-L2-DC24V-F、ST2-DC12V、ST1-L2-DC9V-F、ST2-DC24V、ST1-DC9V、ST2-L2-DC6V、ST1-DC3V-F、ST1-DC12V。描述及对比如下：

型号	ST1-L2-DC3V	ST1-L2-DC24V-F	ST2-DC12V	ST1-L2-DC9V-F	ST2-DC24V	ST1-DC9V	ST2-L2-DC6V	ST1-DC3V-F	ST1-DC12V
描述	General Purpose Relays 3VDC 1 Form A 1 Form B	General Purpose Relays 8A 24VDC 2COIL LATCH 1FORMA/1FORMB PCB	General Purpose Relays 8 AMP 12VDC DPST NO SEALED	General Purpose Relays ST RELAY	General Purpose Relays 8A 24VDC DPST NON-LATCHING PCB	General Purpose Relays 8A 380VAC 9VDC 1 Form A 1 Form B	General Purpose Relays RELAY POWER LATCH 8A 6VDC PCB	General Purpose Relays 8A 380VAC 3VDC 1 Form A 1 Form B	General Purpose Relays 8A 12VDC 1FORMA 1FORMB PCB
是否无铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅
是否Rohs认证	符合	符合	符合	符合	符合	符合	符合	符合	符合
厂商名称	Panasonic(松下)	Panasonic(松下)	Panasonic(松下)	Panasonic(松下)	Panasonic(松下)	Panasonic(松下)	Panasonic(松下)	Panasonic(松下)	Panasonic(松下)
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN代码	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
主体宽度	14 mm	14 mm	14 mm	14 mm	14 mm	14 mm	14 mm	14 mm	14 mm
主体高度	11.3 mm	11.3 mm	11.3 mm	11.3 mm	11.3 mm	11.3 mm	11.3 mm	11.3 mm	11.3 mm
主体长度或直径	31 mm	31 mm	31 mm	31 mm	31 mm	31 mm	31 mm	31 mm	31 mm
最大线圈电流（直流）	0.075 A	0.01 A	0.02 A	0.025 A	0.01 A	0.025 A	0.039 A	0.075 A	0.02 A
线圈工作电压（直流）	2.4 V	19.2 V	9.6 V	7.2 V	19.2 V	7.2 V	4.8 V	2.4 V	9.6 V
线圈功率	240 mW	240 mW	240 mW	240 mW	240 mW	240 mW	240 mW	240 mW	240 mW
线圈释放电压（直流）	2.4 V	19.2 V	1.2 V	7.2 V	2.4 V	0.9 V	4.8 V	0.3 V	1.2 V
线圈电阻	40 Ω	2400 Ω	600 Ω	360 Ω	2400 Ω	360 Ω	155 Ω	38 Ω	600 Ω
最大线圈电压（直流）	3 V	24 V	12 V	9 V	24 V	9 V	6 V	3 V	12 V
标称线圈电压	3 V	24 V	12 V	9 V	24 V	9 V	6 V	3 V	12 V
线圈/输入电源类型	DC	DC	DC	DC	DC	DC	DC	DC	DC
触点（交流）最大额定功率R负载	3040VA@380VAC	3040VA@380VAC	3040VA@380VAC	3040VA@380VAC	3040VA@380VAC	3040VA@380VAC	3040VA@380VAC	3040VA@380VAC	3040VA@380VAC
触点（交流）最大额定R负载	8A@380VAC	8A@380VAC	8A@380VAC	8A@380VAC	8A@380VAC	8A@380VAC	8A@380VAC	8A@380VAC	8A@380VAC
最大触点电流（交流）	8 A	8 A	8 A	8 A	8 A	8 A	8 A	8 A	8 A
最大触点电流（直流）	8 A	8 A	8 A	8 A	8 A	8 A	8 A	8 A	8 A
触点（直流）最大额定功率R负载	150W@250VDC	150W@250VDC	150W@250VDC	150W@250VDC	150W@250VDC	150W@250VDC	150W@250VDC	150W@250VDC	150W@250VDC
触点（直流）最大额定R负载	8A@250VDC	8A@250VDC	8A@250VDC	8A@250VDC	8A@250VDC	8A@250VDC	8A@250VDC	8A@250VDC	8A@250VDC
触点电阻	30 mΩ	30 mΩ	30 mΩ	30 mΩ	30 mΩ	30 mΩ	30 mΩ	30 mΩ	30 mΩ
最大触点电压（交流）	380 V	380 V	380 V	380 V	380 V	380 V	380 V	380 V	380 V
最大触点电压（直流）	250 V	250 V	250 V	250 V	250 V	250 V	250 V	250 V	250 V
触点/输出电源类型	AC/DC	AC/DC	AC/DC	AC/DC	AC/DC	AC/DC	AC/DC	AC/DC	AC/DC
线圈与触点之间的介电强度	3750 Vrms	3750 Vrms	3750 Vrms	3750 Vrms	3750 Vrms	3750 Vrms	3750 Vrms	3750 Vrms	3750 Vrms
断开触点之间的介电强度	1200 Vrms	1200 Vrms	1200 Vrms	1200 Vrms	1200 Vrms	1200 Vrms	1200 Vrms	1200 Vrms	1200 Vrms
电气寿命	100000 Cycle(s)	100000 Cycle(s)	100000 Cycle(s)	100000 Cycle(s)	100000 Cycle(s)	100000 Cycle(s)	100000 Cycle(s)	100000 Cycle(s)	100000 Cycle(s)
末端触点材料	Silver Tin Oxide	Silver Tin Oxide	Silver Tin Oxide	Silver Tin Oxide	Silver Tin Oxide	Silver Tin Oxide	Silver Tin Oxide	Silver Tin Oxide	Silver Tin Oxide
末端触点镀层	GOLD	GOLD	GOLD	GOLD	GOLD	GOLD	GOLD	GOLD	GOLD
输入切换控制类型	Random	Random	Random	Random	Random	Random	Random	Random	Random
绝缘电阻	1000000000 Ω	1000000000 Ω	1000000000 Ω	1000000000 Ω	1000000000 Ω	1000000000 Ω	1000000000 Ω	1000000000 Ω	1000000000 Ω
安装特点	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT	THROUGH HOLE-STRAIGHT MOUNT
端子数量	8	8	6	8	8	8	8	8	6
工作时间	15 ms	15 ms	15 ms	15 ms	15 ms	15 ms	15 ms	15 ms	15 ms
最高工作温度	60 °C	60 °C	60 °C	60 °C	60 °C	60 °C	60 °C	60 °C	60 °C
最低工作温度	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
PCB 孔数	8	8	6	8	8	8	8	8	6
包装方法	BOX	BOX; TUBE	BOX	BOX; TUBE	BOX	BOX	BOX	BOX; TUBE	BOX
物理尺寸	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm	31mm x 14mm x 11.3mm
参考标准	CSA; SEMKO; UL; VDE	CSA; SEV; UL; VDE	CSA; SEMKO; UL; VDE	CSA; SEV; UL; VDE	CSA; SEMKO; UL; VDE	CSA; SEMKO; UL; VDE	CSA; SEMKO; UL; VDE	CSA; SEV; UL; VDE	CSA; SEMKO; UL; VDE
继电器动作	LATCHED	LATCHED	MOMENTARY	LATCHED	MOMENTARY	MOMENTARY	LATCHED	MOMENTARY	MOMENTARY
继电器样式	1 FORM A,B	1 FORM A,B	2 FORM A	1 FORM A,B	2 FORM A	1 FORM A,B	2 FORM A	1 FORM A,B	1 FORM A,B
继电器功能	DPST	DPST	DPST	DPST	DPST	DPST	DPST	DPST	DPST
继电器类型	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY	POWER/SIGNAL RELAY
释放时间	10 ms	10 ms	10 ms	10 ms	10 ms	10 ms	10 ms	10 ms	10 ms
表面贴装	NO	NO	NO	NO	NO	NO	NO	NO	NO
端子长度	0.0035 inch	0.0035 inch	0.0035 inch	0.0035 inch	0.0035 inch	0.0035 inch	0.0035 inch	0.0035 inch	0.0035 inch
端接类型	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER	SOLDER
重量	10 g	10 g	10 g	10 g	10 g	10 g	10 g	10 g	10 g
制造商序列号	ST	-	ST	-	ST	ST	ST	-	ST

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