Cooper Bussmann 6125TD 250VAC 125VDC Min Typ Max I2t† Drop‡ 1025T250mA, 1025T500mA, 1025T800mA

Brick™ Fuses 1025T Series Time Lag, Low Breaking Capacity

Description

•Designed to IEC 127-4

•Surface Mount fuse, time lag

•Solder Immersion Compatible

•Overcurrent protection of systems up to 250VAC

ELECTRICAL CHARACTERISTICS

% of Amp Rating	Opening Time
125%	1 Hours Minimum
200%	2 Minutes Maximum
200%	1 Second Minimum
1000%	0.01 -- 0.1 Seconds

Approvals

• Designed to IEC 127, Sheet 4 (approval pending)

Environmental Data

• Termination Strength: IEC 127-4 Clause 8.3.2

• Soldered Joints: IEC 127-1 Clause 8.5

• Solderability: IEC 127-4 Clause 8.6.2 subjected to Test

Td of IEC-68-2-58 with the following conditions; Aging:

none. Immersion conditions: exceeds IEC 127-4.

Depth of immersion: entire metal surface. Flux type:

non-activated. Solder type: 60% tin and 40% lead

according to IEC 68-2-20, Appendix B.

• Resistance to Soldering Heat: IEC 127-4 Clause 8.7

Dimensions mm⁄(inches)

Drawing Not to Scale

			3.07		± 0.15				1.4 ± 0.25
			(0.121		± 0.006)			(0.055 ± 0.010)
2.77		± 0.15							2.77 ±	0.15
							3.07 ± 0.15
								(0.109 ± 0.006)
(0.109	± 0.006)					(0.121 ± 0.006)
End View
				2.77	± 0.15
			(0.109		± 0.006)

1.4 ± 0.25

(0.055 ± 0.010)

2.77± 0.15

(0.109 ± 0.006)

10.29± 0.20 (0.405 ± 0.008)

1.4± 0.25

(0.055 ± 0.010)

3.07± 0.15

(0.121 ± 0.006)

1.4± 0.25

(0.055 ± 0.010)

3.07 ± 0.15

(0.121 ± 0.006)

Top View

subjected to Test Td of IEC 68-2-58 with the following

conditions; Aging: none. Immersion conditions: 260°C

± 5°C, 10 seconds ± 1 sec. Depth of immersion:

10mm. Flux type: activated. Solder type: 60% tin and

40% lead

• Insulation Resistance: IEC 127-4, Clause 9.3.3

(resistance ≥ 0.1Mohms)

10.29 ± 0.20

(0.405 ± 0.008)

Land Pattern 3.30

(0.130)

Side View

4.38

(0.172)

Ordering

• Specify product code and packaging code

Soldering Method

6.79

(0.267)

• Wave Immersion: 260°C, 10 sec max.

• Infrared: 260°C, 30 sec max.

SPECIFICATIONS

Voltage

Interrupting

DC Cold

Typical

Typical

Max.

Marking

Product Code

Rating

Rating*

Resistance** (ohms)

Melting

Voltage

Voltage

Code

AC

DC

250VAC

125VDC

min.

typ.

max.

I2t†

Drop‡

Drop‡

1025T250mA

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

800

Dt

1025T500mA

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

600

Ft

1025T800mA

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

400

KKt

1025T1A

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

300

Ht

1025T1.6A

250V

125V

100A

50A

0.064

0.074

0.083

12.26

155 mV

300

MMt

1025T2A

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

300

Nt

1025T2.5A

250V

125V

100A

50A

0.045

0.048

0.051

32.91

TBD

300

Ot

1025T3.15A

250V

125V

100A

50A

0.030

0.034

0.038

54.98

184 mV

300

Qt

1025T4A

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

300

St

1025T5A

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

300

Tt

1025T6.3A

250V

125V

100A

50A

TBD

TBD

TBD

TBD

TBD

300

OOt

*AC Interrupting Rating (Measured at designated voltage, greater than 95% power factor); DC Interrupting Rating (Measured at designated voltage, time constant of the calibrated circuit is less than 1 millisecond, battery source)

**DC Cold Resistance (Measured at ≤10% of rated current)

†	T ypical Melting I2t (Measured with a battery bank at rated DC voltage, 10x-rated current, not to exceed IR, time constant of calibrated circuit less than 50 microseconds)
‡	T ypical Voltage Drop (Measured at rated current after temperature stabilizes)

•Device designed to carry rated current for four hours minimum. An operating current of 80% or less of rated current is recommended, with further derating required at elevated ambient temperatures.