Flameproof Power

Metal Film Resistors

MFP Series

Flameproof Power

Metal Film Resistors

MFP Series

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Issue D · 03.06

Welwyn Components

144

Application Notes

1. If the resistors are to dissipate full rated power, it is

recommended that the terminations should not be

soldered closer than 4mm from the body.

2. Due to operating temperature limitations imposed by some

pcb materials, derating may be necessary. An estimate of

the temperature rise to be expected can be calculated

using the thermal impedance figures given under Electrical

Data.

3. These products are also available in a range of lead forming

options. In particular, MFP2 is available in ZI-form SMD

format packed in blister tape - see:

http://www.ttelectronicsresistors.com/pdf/datasheet/ZI-form.pdf

b

6

6

5

Figure 1

Packaging

MFP resistors are normally 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.

Maximum

Load at rated power : 1000 hours at 70°C

∆

5

%

R

Shelf life : 12 months at room temperature

∆

2

%

R

Derating from rated power at 70°C

∆

C

°

5

5

1

t

a

o

r

e

z

%

R

Climatic

∆

3

%

R

Climatic category

50/155/56

Temperature rapid change

∆

5

.

0

%

R

Resistance to solder heat

∆

5

.

0

%

R

n

i

m

0

0

5

s

t

l

o

v

f

o

o

r

p

e

g

a

t

l

o

V

Performance Data

2

P

F

M

1

P

F

M

e

p

y

T

b

8

6

2

5

)

m

m

(

Ordering Procedure

Example: MFP2 at 4.7 kilohms and 1% tolerance in ammo pack box of 2000 pieces –

M F P 2 – 4 K 7 F I

Type

Value (use IEC62 code)

Tolerance (use IEC62 code)

F

1%

G 2%

J

5%

Packing

I

Ammo

MFP1

5000/box

Standard

MFP2

2000/box

06.16

General Note

TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

© TT Electronics plc

www.ttelectronicsresistors.com

BI Technologies IRC Welwyn