Document Number: 28747

For technical questions, contact: ff3eresistors@vishay.com

www.vishay.com

Revision: 25-Jun-08

11

MFU Series - Thin Film Fuse

Thin Film Flat Chip Fuses

Vishay Beyschlag

9.3.2

-

Breaking

capacity

50 A at rated voltage

acc. to UL 248-14

Optical inspection with naked eye

no visible damage

9.3.3

-

Residual

resistance

50 A at rated voltage

acc. to UL 248-14

Insulation resistance at 2.0 x

higher than 0.1 M

Ω

9.4

-

Endurance test

acc. to IEC

60127-1

a)

I = 1.0 x

1.0 h ON; 0.25 h OFF;

23 °C; 100 times

b)

I = 1.25 x

1.0 h ON

23 °C; 1 time

MFU 0402

No visible damage

ΔR/R ≤ ± 10 %

MFU 0603

MFU 0805

MFU 1206

-

-

Verification of

temp.-rise and

current- carrying

capacity acc. to

UL 248-14

clause 8.2.3

I = 1.0 x

MFU 0402

Temperature rise

of hot spot

≤ 75 K

acc. to UL 248-14 clause

8.2.4

MFU 0603

MFU 0805

MFU 1206

9.5

-

Maximum

sustained

dissipation acc.

to IEC 60127-1

Calculation in accordance with

results of clause 9.4 b)

Dissipation

≤ acc. to IEC 60127-4 table 2

9.7

-

Fuse-link

temperature

The test is performed during the

final 5 min of clause 9.4 b)

MFU 0402

Temperature rise of

terminals

≤ 85 K

MFU 0603

MFU 0805

MFU 1206

-

78 (Cab)

Damp heat,

steady state

(40 ± 2) °C; 56 days;

(93 ± 3) % RH

ΔR/R ≤ ± 10 %

I-t characteristic

-

14 (Na)

Rapid change of

temperature

30 min at LCT;

30 min at UCT;

LCT = - 55 °C;

UCT = 125 °C;

5 cycles

ΔR/R ≤ ± 10 %

-

6 (Fc)

Vibration

Endurance by sweeping;

10 to 2000 Hz;

no resonance;

amplitude

≤ 1.5 mm or

ΔR/R ≤ ± 10 %

-

45 (XA)

Component

solvent

resistance

Isopropyl alcohol;

50 °C; method 2

No visible damage

-

45 (XA)

Solvent

resistance of

marking

Isopropyl alcohol;

50 °C; method 1, toothbrush

Marking legible,

no visible damage

-

Shear

(adhesion)

RR 1608M; 9 N

No visible damage

RR 2012M and RR 3216M; 45 N

-

-

Flammability

IEC 60695-2-2,

needle flame test; 10 s

No burning after 30 s

TEST PROCEDURES AND REQUIREMENTS

IEC

60127-4

CLAUSE

IEC

60068-2

TEST

METHOD

TEST

PROCEDURE

REQUIREMENTS

PERMISSIBLE CHANGE (

ΔR/R)