Document Number: 28729

For technical questions contact: ff3dresistors@vishay.com

www.vishay.com

Revision: 24-Feb-04

13

PR01/02/03

Power Metal Film Resistors

Vishay BCcomponents

Application Information

60

90

10

1

30

0

30

60

90

f (MHz)

ϕ(deg)

n

R = 18 Ω

n

R = 20 kΩ

n

R = 1.3 kΩ

n

R = 1.5 Ω

R = 100 kΩ

n

PR03 Phase angle as a function of applied frequency.

TESTS AND REQUIREMENTS

Essentially all tests are carried out in accordance with the

schedule

of

“IEC publication

60115-1”,

category

LCT/UCT/56 (rated temperature range: Lower Category

Temperature, Upper Category Temperature; damp heat,

long

term,

56 days).

The

testing

also

covers

the

requirements specified by EIA and EIAJ.

The tests are carried out in accordance with IEC publication

60068-2, “Recommended basic climatic and mechanical

robustness testing procedure for electronic components”

and under standard atmospheric conditions according to

“IEC 60068-1”, subclause 5.3.

In the Test Procedures and Requirements table, tests and

requirements are listed with reference to the relevant

clauses of “IEC publications 60115-1 and 60068-2”; a short

description of the test procedure is also given. In some

instances deviations from the IEC recommendations were

necessary for our method of specifying.

All soldering tests are performed with mildly activated flux.

TEST PROCEDURES AND REQUIREMENTS

IEC

60115-1

CLAUSE

IEC

60068-2

TEST

METHOD

TEST

PROCEDURE

REQUIREMENTS

TESTS IN ACCORDANCE WITH THE SCHEDULE OF IEC PUBLICATION 60115-1

4.4.1

visual examination

no holes; clean surface; no damage

4.4.2

dimensions (outline)

gauge (mm)

see Straight & Kinked Dimensions tables

4.5

resistance

applied voltage (+ 0/−10 %):

R < 10 Ω: 0.1 V

10 Ω ≤ R < 100 Ω: 0.3 V

100 Ω ≤ R < 1 kΩ: 1 V

1 kΩ ≤ R < 10 kΩ: 3 V

10 kΩ ≤ R < 100 kΩ: 10 V

100 kΩ ≤ R < 1 MΩ: 25 V

R = 1 MΩ: 50 V

4.18

20 (Tb)

resistance to soldering heat

thermal shock: 3 s; 350 °C; 3 mm from body

∆R/R max.: ± 1 % + 0.05 Ω

4.29

45 (Xa)

component solvent

resistance

followed by brushing

in accordance with “MIL 202 F”

no visual damage

4.17

20 (Ta)

solderability

2 s; 235 °C

good tinning; no damage

4.7

voltage proof on

insulation

maximum voltage 500 V (RMS)

during 1 minute; metal block method

no breakdown or flashover