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CMA0204

High Pulse Load MELF Resistor

Vishay Semiconductors 

CMA 0204

Vishay Beyschlag

High Pulse Load MELF Resistor

TESTS AND REQUIREMENTS

Essentially all tests are carried out in accordance with the

following specifications:

EN 60115-1, generic specification

EN 140400, sectional specification

EN 140401-803, detail specification

The Test Procedures and Requirements table contains the

applicable tests selected from the documents listed above.

The tests are carried out in accordance with IEC 60068 and

under standard atmospheric conditions in accordance with

IEC 60068-1, 5.3. Climatic category LCT/UCT/56 (rated

temperature range: Lower Category Temperature, Upper

Category Temperature; damp heat, long term, 56 days) is

valid.

Unless otherwise specified the following values apply:

Temperature: 15 ˚C to 35 ˚C

Relative humidity: 45 % to 75 %

Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar).

The components are mounted for testing on printed-circuit

boards in accordance with EN 140400, 2.3.3, unless

otherwise specified.

The requirements stated in the Test Procedures and

Requirements table are based on the required tests and

permitted limits of EN 140401-803.

TEST PROCEDURES AND REQUIREMENTS

EN

60 115-1

CLAUSE

IEC 60068-2

TEST

METHOD

TEST

PROCEDURE

stability for product types:

CMA 0204

4.5

−

resistance

-

REQUIREMENTS

PERMISSIBLE CHANGE (∆R/R)

10 Ω to 100 kΩ

±2%

4.8.4.2 -

temperature coefficient

at 20 / − 55 / 20 ˚C

and 20 / 125 / 20 ˚C

see Temperature Coefficient graph

4.25.1 -

4.25.1 -

4.25.3

4.24

4.23

4.23.2

4.23.3

4.23.4

4.23.5

4.23.6

-

78 (Cab)

2 (Ba)

30 (Db)

1 (Aa)

13 (M)

30 (Db)

-

1 (Aa)

4.19

14 (Na)

endurance at 70 °C:

standard operation mode

endurance at 70 °C:

power operation mode

endurance at upper category

temperature

damp heat, steady state

climatic sequence:

dry heat

damp heat, cyclic

cold

low air pressure

damp heat, cyclic

cold

rapid change of temperature

U = P 70 × R ≤ Umax;

1.5 h on; 0.5 h off;

70 °C; 1000 h

70 °C; 8000 h

U = P 70 × R ≤ Umax;

1.5 h on; 0.5 h off;

70 °C; 1000 h

70 °C; 8000 h

125 °C; 1000 h

155 °C; 1000 h

(40 ± 2) °C; 56 days; (93 ± 3) % RH

UCT; 16 h

55 °C; 24 h; ≥ 90 % RH; 1 cycle

LCT; 2 h

8.5 kPa; 2 h; (25 ± 10) °C

55 °C; 24 h; ≥ 90 % RH; 5 cycles

LCT = − 55 °C; UCT = 155 ˚C

− 55 °C; 2 h

30 minutes at − 55 ˚C;

30 minutes at + 125 ˚C; 5 cycles

± (1 % + 0.05 Ω)

± (2 % + 0.05 Ω)

± (2 % + 0.05 Ω)

± (4 % + 0.05 Ω)

± (2 % + 0.05 Ω)

± (4 % + 0.05 Ω)

± (1 % + 0.1 Ω)

± (1 % + 0.1 Ω) no visible damage

± (0.5 % + 0.1 Ω)

± (0.5 % + 0.1 Ω)

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For technical questions contact: ff3bresistors@vishay.com

Document Number: 28717

Revision: 27-Feb-04

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