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SPT
SUB-MINIATURE FUSE
SMART PROTECTOR TIME LAG TYPE

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SPT sub-miniature fuses are extremely small and an excellent choice to accommodate
PCB space requirements.  Available in 1 to 6.3 amps. 
Built according to IEC 60127-3/4. 
Has several approvals including:  VDE, CCC, cUL, SEMKO, PSE and EK. Interrupting rating
of 35A or 10X rated current, whichever is greater.

GENERAL SPECIFICATIONS

Model

Ampere Rating(A)

Voltage Rating(V)

Nominal Resistance
Cold Ohms(¥Ø)

Nominal Melting I2t(A2s)

SPT 1A00

1

250

0.073

9.7

SPT 1A25

1.25

0.051

12.3

SPT 1A60

1.6

0.041

17.8

SPT 2A00

2

0.031

33.0

SPT 2A50

2.5

0.023

47.0

SPT 3A15

3.15

0.017

62.5

SPT 4A00

4

0.013

102.0

SPT 5A00

5

0.010

163.0

SPT 6A30

6.3

0.007

235.0

CHARACTERISTICS                                                                      Values in [ ] mean change in §Ù after test

Voltage drop

Max. Voltage drop(mV)

All electrical test is to conducted with the ambient air at a temperature of 25¡¾3¡É. The air temperature is not to vary
more than 5
C during the test, and to be within these limits.

1A

140

1.25A

130

1.6A

120

2A

100

2.4A

100

3.15A

100

4A

100

5A

100

6.3A

90

Endurance

The voltage drop increase shall be less than 10% of the Value before the test.

S100 cycles of rated current (DC) carry for 1hr, then switch off for 15min. Followed by 1hr at 1.5 ln. f.

Test at an elevated
Temperature 70
C

Not operate

A current of 1.0 ln shall be passed through the fuse-links or 1hr

Insulation

0.1M¥Ø min. measured by
500V dc insulation tester

After overload test or Breaking Capacity test

DIMENSIONS

Model

Dimension(mm)

L¡¾1.0

H¡¾0.2

L¡¾3.0

P¡¾0.05

Min h

D¡¾0.2

¥Õd¡¾0.03

SPT TE

8.4

7.9

4.3

5.05

0.5

4.3

0.02

SPT TS

6.5

AVERAGE TIME CURRENT CURVE AND AMPERE RATING

% of Ampere Rating

Opening Time

210%

2minutes, Maximum

275%

0.4sec min : 10seconds Maximum

400%

0.15sec min : 3seconds Maximum

1000%

0.02sec min : 0.15seconds Maximum

ORDERING PROCEDURE EXAMPLE

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