Metal Film Resistors

MFR4P Series

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Issue D · 03.06

Welwyn Components

139

Packaging

MFR4P resistors are supplied tape packed ready for loading

onto automatic sequencing and insertion machines.

The standard taping method and critical dimensions are

shown in Figure 1.

Component wires will not protrude beyond the outside edge

of the tapes.

Alternative packaging available by request.

Lead Formed resistors can also be supplied. Standard options

of Lancet, Radial and Goalpost forming are available by

request.

52

6

6

5

≤ 1.4 mm

Figure 1

Maximum

Load at rated power : 1000 hours at 70°C

∆R %

0.5

Shelf life : 12 months at room temperature

∆R %

0.1

Derating

Zero at 155°C

Short term overload

∆R %

0.5

Climatic

∆R %

0.5

Climatic category

55/125/56

Long term damp heat

∆R %

1

Temperature rapid change

∆R %

0.5

Resistance to solder heat

∆R %

0.5

Vibration and bump

∆R %

0.5

Noise. (in a decade of frequency)

µV/V

0.1

Insulation resistance

ohms

>1G

Voltage proof

volts

500 min

Performance Data

Type

MFR4P

Large ammo pack

5000

Standard Quantities Per Package