PSR datasheet(2/9 Pages) ROHM

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PSR series

Datasheet

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Characteristics

Test items

Guaranteed value

Test conditions

Resistor type

Resistance

F ( ±1% )

Measuring method : 4probe per Bottom terminal

Variation of resistance

with temperature

See P1

Measurement：+20/+125℃

Overload

±0.5％

Rated power×5， 5s

Solderability

Anew uniform coating of minimum of 95% of

the surface being immersed and no

soldering damage.

Flux：Rosin- Ethanol solution(25%weight)

with diethylamine hydrochloride(3%weight)

Soldering condition：245±5℃

Duration of immersion：2.0±0.5s

Resistance to

soldering heat

±1.0％

Soldering condition：260±5℃

Duration of immersion：10±1s

No remarkable abnormality on the appearance.

Rapid change of

temperature

±1.0％

Test temp：-55℃～+155℃ 5cycle

Damp heat, steady state

±0.5％

40 ℃，93％(Relative humidity)

Test time：1,000h～1,048h

ENDURANCE AT 140℃

(terminal temperature)

(PSR100)

±1.0％

Terminal temperature:140℃,Rated power

1.5h:ON－0.5h:OFF

Test time：1,000h～1,048h

ENDURANCE AT 70℃

(ambient temperature)

±1.0％

Ambient temperature:70℃,Rated power

1.5h:ON－0.5h:OFF

Test time：1,000h～1,048h

Endurance at 170℃

±1.0％

170℃

Test time：1,000h～1,048h

Component solvent

Resistance

±0.5％

23±5℃, Immersion cleaning, 10±1s．

Solvent: 2-propanol

Bend strength of

the end face plating

Without open

Compliance Standard(s) : IEC60115-8

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Solder conditions

JISC 5201-1

Recommeded solder profile

Reflow

Temperature(℃)

260

220

150～180

Time(s)

Peak

10s Max.

60s

120s

(Note) About flow soldering

① This part has the structure that resistive element exposed.

Therefore, the solder may be attached to resistive element if

Flow soldering is used, and resistance value may be outside

of the spec.

② This part is ultra low ohmic resistoe.If the solder is not equally

attached on the whole area between the bottomelectrode

and land pattem, resistance value may be outside of the

spec.

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