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  • L1245F Engineering Specification

L1245F Engineering Specification

Brand : Songshan

Product origin : Shanghai

Delivery time : 7-15 days

Supply capacity : 15000000

The 1245 series is a fast-acting surface-mounted fuse with large current, and its maximum specification reaches 125A, and the whole series meets the voltage 86VDC@1500A Breaking condition, with small size, width 4.5mm, easy to arrange, and special fuse design, high connection reliability; new end design, good heat dissipation, low product temperature rise; one body fuse-element design, good product consistency; high I²T, strong surge resistance. It is applied to servers, routers and communication base stations; Industrial machinery such as forklifts, bulldozers, garden tools and electric vehicles; High-power power supply system, storage system.

1.  Electrical Characteristics


Ampere Rating

% of Current Rating

Opening Time

50-125A

100%

Min.4hours

350%

Max120sec


2.  Electrical Specifications



Part Number

Current Rating(A)

Voltage Rating(V)

Interrupting Capacity

Typical Cold DCR*(mΩ)

Nominal I²T** (A²s)

L1245F50.0A

50

86V

86VDC1500A

0.69

4000

L1245F60.0A

60

0.6

6500

L1245F70.0A

70

0.58

7200

L1245F80.0A

80

0.56

9200

L1245F90.0A

90

0.54

10500

L1245F100A

100

0.50

12000

L1245F125A

125

0.47

14000



3. Dimensions



Type

L

W

T

D


(mm)

(mm)

(mm)

(mm)

L1245F

12.30±0.50

4.50±0.2

4.50±0.2

2.70±0.3


LARGE CURRENT SMD FUSE


4.  Recommended Land Patterns


SMD FUSES 100A CHINA 


Dimensions

Spec

A(mm)

5.8±0.3

B(mm)

16.0±0.30

C(mm)

6.4±0.30

D(mm)

5.1±0.3


5.  Materials


Components

Material

Body


Ceramic

Fuse-element

Copper

Terminations

Silver plated brass


6.  Part Number Information


1245 SMD FUSES 125A

7. Time Current Curve

LARGE CURRENT SMD FUSE


8. Temperature Re-rating Curve


When choosing the fuse’s specification,if the operating Environmental temperature beyond the scope from 20~30℃,engineer should consider the environmental temperature’s affection to fuses.Please refer Temperature Re-rating Curve.

SMD FUSES 100A CHINA


9. Product Characteristics



Item

 Test condition

Performance

Standard

Time/Current

100% of current rating

4hr Min

UL248-14

350% of current rating .

10sec Max

Factory SPEC

1000%of current rating

1msec Min

Factory SPEC

Interrupting Ability

1500A@86VDC

 without permanent arcing,ignition and bursting of fuse link

UL248-14

Solder ability

240℃±5℃,3sec±0.5sec,

90% coverage Min.

MIL-STD-202
Method 208

Resistance to Soldering Heat

260℃±5℃,10sec±0.5sec,

|△R|: <10%

MIL-STD-202
Method 210

Moisture resistance

 10 cycle

|△R|: <10%., no mechanical damage

MIL-STD-202
Method 106

Salt Spray

5%±1% salt solution ,48hours

|△R|: <10%

MIL-STD-202
Method 101

Mechanical Shock


Test Condition I: Deenergized. 100G’s peak
amplitude, sawtooth wave 6ms duration, 3
cycles XYZ+xyz = 18 shocks

|△R|: <10%., no mechanical damage

MIL-STD-202
Method 213

Mechanical Vibration

Amplitude 10Hz~55Hz in 1 min. 2 hours,each XYZ, total 6 hours

|△R|: <10%., no mechanical damage

MIL-STD-202
Method 201

Thermal Shock

 -65°C to +125°C, 100 cycles,

|△R|: <10%., no mechanical damage

MIL-STD-202
Method 107


10.  Storage



Packaged Fuse should be storage at ambient temperature for -10~+40 ℃ relative humidity below 80%,the warehouse of Ambient air in non-acidic, non-alkaline or other no corrosive gases,Before use, need to confirm the aluminum foil bag sealing intact


11. Recommended Solder Curve

1245 SMD FUSES 125A


12.Packaging


Tape(mm)

Reel(inch)

Quantity

24

13

1500


13. Others


This product is fully in line with the EU ROHS requirements!

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