mfr4p Welwyn Components, mfr4p Datasheet

mfr4p

Manufacturer Part Number

mfr4p

Description

Metal Film Resistors

Manufacturer

Welwyn Components

Datasheet

1.MFR4P.pdf (2 pages)

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138

Construction

The resistance element is a precisely controlled thin film of

metal alloy sputtered on to a high purity ceramic core,

protected by a moisture-resistant, high dielectric strength

coating applied so that terminations remain completely clear.

This permits a well defined body length,

(clean lead to clean lead dimension L).

Terminations

Material

Strength

Solderability The terminations meet the requirements of

Metal Film Resistors

MFR4P Series

•

Electrical Data

Physical Data

General Note

Welwyn Components reserves the right to make changes in product specification without notice or liability.

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

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

*Below 1 ohm 5% preferred

Power rating at 70°C

Resistance range

Limiting element voltage

TCR

Resistance tolerance

Standard values

Thermal impedance

Ambient temperature range

Dimensions (mm) & Weight (g)

Type

MFR4P

Smallest size for power rating

Resistance range: 1 ohm to 1M ohms

Temperature coefficient down to 50ppm/°C

L Max

6.2

Solder-coated copper wire.

The terminations meet the requirements of

IEC 68.2.21

IEC 115-1, Clause 4.17.3.2

D Max

2.5

f min

21.0

· Bedlington, Northumberland NE22 7AA, UK

d nom

0.6

mounting

centres

10.2

PCB

radius

bend

ppm/°C

°C/watt

Min.

0.6

watts

ohms

volts

°C

Wt.nom

Marking

Resistors are colour coded with 6 bands. IEC 62 colours are

used.

Solvent Resistance

The body protection and marking are resistant to all normal

industrial cleaning solvents suitable for printed circuits.

0.3

<1R: 300 >=1R: 50

E24 preferred

0.5, 1, 2, 5*

0R22 to 1M

-55 to 155

MFR4P

Welwyn Components

250

130

0.6

TT electronics plc

Issue D · 03.06

A subsidiary of

Related parts for mfr4p

mfr4p Summary of contents

Page 1

... Metal Film Resistors MFR4P Series • Smallest size for power rating • Resistance range: 1 ohm to 1M ohms • Temperature coefficient down to 50ppm/°C Electrical Data Power rating at 70°C Resistance range Limiting element voltage TCR Resistance tolerance Standard values Thermal impedance ...

Page 2

... 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. Ordering Procedure Example: MFR4P at 6.8 kilohms and 5% tolerance in ammo pack box of 5000 pieces – Type Value (use IEC62 code) Tolerance (use IEC62 code) D 0.5% ...

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