03/08/22

Sony Chemicals Corp.

SFH-1212A/1412A

1. Specification SFH-1212A SFH-1412A Rated current 12A Size 5.43.21.35mm Electrode Ag-Pt Fuse resistance (Typical) 31m Operating voltage 7.413.8V 10.519.6V Heater resistance 7.31.8 14.73.7 Operating electric power 635W Reflowing temperatureMAX 260

2. External view & Equivalent circuit(Unit: mm. Not in scale.)

3. Terminal Size (Unit: mm. Not in scale.)

4,6-nylon Ceramic

Heater

Fuse

5.4

3.2

1.35max

2.0 1.4 (2.0)

0.6

1.05

2.2

3.2

+0.

3/-0

.2

0.95 1.4 0.95 0.4 0.4 (0.65) 0.65

1

2 3

4

4 - R0.2

(0.2

) (0

.45)

2.9

03/08/22

Sony Chemicals Corp.

4. Operation time by the heater (Electricity vs. clearing time at 25,Typical)

Electric Power 6W 10W 20W 35W Clearing Time 9.3s 2.2s 0.51s 0.19s

0.1

1

10

100

0 5 10 15 20 25 30 35 40Electric Power (W)

Cle

arin

g T

ime

(s)

SFH-12A

03/08/22

Sony Chemicals Corp.

5. Operation time by the heater (Ambient temperature vs. clearing time, Typical)

Ambient

Temperature() -10 25 80

Clearing Time(s) 14.5s 9.3s 5.6s

1

10

100

-40 -20 0 20 40 60 80 100

Ambient Temperature()

Cle

arin

g T

ime

(s)

SFH-12A (6W)

03/08/22

Sony Chemicals Corp.

6. Current interrupting time (at25, Typical)

Current 24A 36A 50A 80A 100A 150A

Clearing Time 24.9s 3.2s 0.87s 0.141s 0.057s 0.0088s

0.001

0.01

0.1

1

10

100

0 20 40 60 80 100 120 140 160Current(A)

Cle

arin

g T

ime

(s)

SFH-12A

03/08/22

Sony Chemicals Corp.

7. Current interrupting time

(Ambient temperature vs. Clearing time by Rated Current2, Typical))

Ambient

Temperature() -10 25 80

Clearing Time(s) 33.5s 21.0s 10.5s

1

10

100

-40 -20 0 20 40 60 80 100

Ambient Temperature()

Cle

arin

g T

ime

(s)

SFH-12A (24A)