SF2 datasheet, PDF - EEWORLD Datasheet

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SF2: DescriptionRECTIFIER DIODE; Categorysemiconductor Discrete semiconductor; File Size338KB，7 Pages; ManufacturerNais ( Matsushita Electric Works ); Websitehttp://www.nais-e.com/

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RECTIFIER DIODE

SF2 Parametric

Parameter Name	Attribute value
state	ACTIVE
Diode type	RECTIFIER DIODE

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POLARISED, MONOSTABLE

SAFETY RELAY with

(mechanical linked) forced

contacts operation

53.3±0.3

2.098±.012

25.0

.984

16.5±0.3

.650±.012

(SF3 pending) (SF3 pending)

(SF3 pending)

SF-RELAYS

enables to plan a circuit to detect welding

or go back to the beginning condition.

• Separated chamber structure

(2 Form A 2 Form B, 3 Form A 1 Form B,

4 Form A 4 Form B)

N.O. and N.C. side contacts are put in

each own space surrounded with a card

and a body-separater. That prevents

short circuit between contacts, which is

caused by their springs welding or

damaged.

• UL/CSA, TÜV, SEV approved

(UL/CSA, SEV of SF3 pending)

FEATURES

• Forced operation contacts (2 Form A

2 Form B, 3 Form A 1 Form B)

N.O. and N.C. side contacts are

connected through a card so that one

interacts with the other in movement. In

case of a contact welding, the other

keeps a min. 0.5mm

.020inch

contact

gap.

• Independent operation contacts

(4 Form A 4 Form B)

Each pair of contacts is free from the

main armature and is independent from

each other. So if a N.O. pair of contacts

are welded, the other 3 N.O. contacts are

not effected (operate properly) That

53.3±0.3

2.098±.012

25.0

.984

16.5±0.3

.650±.012

53.3±0.3

2.098±.012

33±0.3

1.299±.012

16.5±0.3

.650±.012

inch

SPECIFICATIONS

Contact

Type

Arrangement

Initial contact resistance, max.

(By voltage drop 6 V DC 1 A)

Contact material

Nominal switching

capacity

Rating

Max. switching power

(resistive)

Max. switching voltage

Max. carrying current

Mechanical (at 180

Expected

cpm) (resistive)

life (min.

operations) Electrical (at 20 cpm)

SF2

SF3

SF4

2 Form A 3 Form A 4 Form A

2 Form B 1 Form B 4 Form B

30 m

Ω

Gold-ﬂashed silver alloy

6 A 250 V AC, 6 A 30 V DC

1,500 VA, 180 W

30 V DC, 440 V AC

6 A DC, AC

Characteristics

(at 25°C

77°F

, 50% Relative humidity)

Max. operating speed

Initial insulation resistance*

Between con-

tact sets

Initial break-

Between open

down voltage*

contacts

Between con-

tact and coil

Operate time*

(at nominal voltage)

Release time (without diode)*

(at nominal voltage)

Temperature rise

(at nominal voltage)

Functional*

Shock

resistance

Destructive*

Vibration

resistance

Conditions for oper-

ation, transport and

storage*

(Not freezing and

condensing at low

temperature)

SF2

SF3

SF4

180 cpm (at nominal voltage)

Min. 1,000 M

Ω

at 500 V DC

2,500 Vrms

Approx. 17 ms

Approx. 7 ms

Approx. 18 ms

Approx. 6 ms

Coil

(at 25°C

77°F

)

Nominal operating power

Remarks

* Speciﬁcations will vary with foreign standards certiﬁcation ratings.

500 mW

Functional*

Destructive

Ambient

temp.

Humidity

More than 10

operations when applying the nominal switching capacity to one

side of contact pairs of each Form A contact and Form B contact

Measurement at same location as " Initial breakdown voltage " section

Detection current: 10mA

Excluding contact bounce time

Half-wave pulse of sine wave: 11ms; detection time: 10

Half-wave pulse of sine wave: 6ms

Detection time: 10

Refer to 5. Conditions for operation, transport and storage mentioned in

AMBIENT ENVIRONMENT (Page 61).

Max. 45

C with nominal coil voltage

and at 6 A switching current

Min. 294 m/s

{30 G}

Min. 980 m/s

{100 G}

117.6 m/s

{12 G}, 10 to 55 Hz

at double amplitude of 2 mm

117.6 m/s

{12 G}, 10 to 55 Hz

at double amplitude of 2 mm

–40

C to +70

–40°F to +158°F

5 to 85% R.H.

37 g

1.31 oz

47 g

1.66 oz

Unit weight

ORDERING INFORMATION

Ex. SF

DC 12 V

Coil voltage

DC 5, 9, 12, 18, 21,

24, 36, 48, 60 V

Contact arrangement

2: 2 Form A 2 Form B

3: 3 Form A 1 Form B

4: 4 Form A 4 Form B

TYPICAL APPLICATIONS

• Signal

• Escalator

• Elevator

• Medical Instruments

• Railway

• Factory Automation

UL/CSA, TÜV, SEV approved type is standard (SF2, SF4)

TÜV approved type is standard (SF3)

258

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