MFR5-220DC - Welwyn Components, Ltd.

Metal Film Resistors

MFR Series

•Professional grade approved to

BSCECC 40101-803 and 019

•Tolerances down to 0.5%

•Temperature coefficient down to 50ppm/°C

5RFM4RFM3RFM

57.05.04.0sttawC°07 ta gnitar rewoP

Resistance range ohms 10R - 1M 1R0 - 10M 1R0 - 1M

053053002stlovegatlov tnemele gnitimiL

0505C°/mppRCT ≤10:150 >10:100*

2,1 ,5.02,1 ,5.01%ecnarelot ecnatsiseR

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

* Note:- Tighter TCR’S are available on professional grade, consult factory for details.

Electrical Data

XEZEXFZFelytS 910 - 10104 CCEC devorppA

5.05.052.052.0sttawC°07 ta gnitar rewoP

M1 ot 010M1 ot 01M1 ot 1M1 ot 1smho.egnar ecnatsiseR

053053052052stlovegatlov tnemele gnitimiL

052001052001C°/mppRCT

5.1 to 9.1 : 200 5.1 to 9.1 : 500

2,12,12,12,1%ecnarelot ecnatsiseR

KCCCKBCBelytS 308 - 10104 CCEC devorppA

52.052.0521.0521.0sttawC°07 ta gnitar rewoP

M1 ot 01M1 ot 01M1 ot 01M1 ot 01smho.egnar ecnatsiseR

052052002002stlovegatlov tnemele gnitimiL

0010500105C°/mppRCT

2 ,1 ,5.02 ,1 ,5.02 ,1 ,5.02 ,1 ,5.0%ecnarelot ecnatsiseR

derreferp 69E ,42E

seulav dradnatS

211041

051ttaw/C°ecnadepmi lamrehT

551 ot 55-C°egnar erutarepmet tneibmA

Issue D · 05.07

A subsidiary of

TT electronics plc

Welwyn Components

135

Dimensions (mm) & Weight (g)

Physical Data

MFR3

Professional

Commercial

Professional

Commercial

Professional

Commercial

MFR4

MFR5

Product grades available commercial, professional

commercial

Type L max

3.5

3.7

6.2

6.8

9.0

10.0

1.8

2.0

2.5

3.0

3.6

3.7

22.4

21.0

19.6

0.5

0.45

0.6

0.55

0.8

0.6

7.6

7.6 0.5

10.2

12.7

0.5

0.6

1.2

0.6

0.1

0.3

0.5

D max F min d nom

PCB

mount

centres

Min

bend

radius

Wt.

nom

Metal Film Resistors

MFR Series

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Issue D · 05.07

Welwyn Components

136

Graph 1 – Load for 1000 hours at 70°C: maximum changes

Graph 2 – Load for 1000 hours at 70°C: maximum changes

CECC 40101-019 Actual Performance

Requirements Maximum Typical

Load at commercial rating : 1000 hours at 70°C ∆1 hparG eeS8.0% R

Load at CECC rating : 1000 hours at 70°C ∆R % 2 0.5 See Graph 1

Shelf life : 12 months at room temperature ∆R % Not Specified 0.1 0.07

C°551 ta orezgnitareD

Short term overload ∆R % 0.5 0.25 0.03

Climatic ∆R % 2 0.5 0.2

65/521/55yrogetac citamilC

Long term damp heat ∆R % 2 0.5 0.3

Temperature rapid change ∆R % 0.5 0.25 0.05

Resistance to solder heat ∆R % 0.5 0.25 0.02

Vibration and bump ∆R % 0.5 0.1 0.01

70.01.0deificeps toNV/Vµ)ycneuqerf fo edaced a ni( .esioN

G1>G1>G1>smhoecnatsiser noitalusnI

nim 004nim 004nim 053stlovfoorp egatloV

Pulse handling Data available upon request

Performance Data - Type MFR 3

CECC 40101-019 CECC 40101-803 Actual Performance

Requirements Requirements Maximum Typical

Load at commercial rating :

1000 hours at 70°C ∆2 hparG eeS8.0% R

Load at CECC rating :

1000 hours at 70°C ∆R % 2 1 0.5 See Graph 2

Shelf life :

12 months at room temperature ∆R % Not specified Not Specified 0.1 0.07

C°551 ta orezC°551 ta orezgnitareD

Short term overload ∆R % 0.5 0.25 0.25 0.01

Climatic ∆R % 2 1 0.5 0.2

65/521/5565/521/55yrogetac citamilC

Long term damp heat ∆R % 2 1 0.5 0.3

Temperature rapid change ∆R % 0.5 0.25 0.25 0.04

Resistance to solder heat ∆R % 0.5 0.25 0.25 0.07

Vibration and bump ∆R % 0.5 0.25 0.1 0.01

Noise. (in a decade of frequency) µV/V Not Specified Not Specified 0.1 0.1

Insulation resistance ohms >1G >1G >1G >1G

nim 005nim 005nim 004nim 005stlovfoorp egatloV

tseuqer nopu elbaliava ataDgnildnah esluP

Performance Data - Type MFR 4

Packaging

All MFR resistors are supplied tape packed ready for loading

on to automatic sequencing and insertion machines.

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.

Graph 3 – Load for 1000 hours at 70°C: maximum changes

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.

Terminations

Material Hot tin dipped copper wire

Strength The terminations meet the requirements of

IEC 68.2.21

Solderability The terminations meet the requirements of

IEC 115-1, Clause 4.17.3.2

Marking

0.5% and 1% tolerance resistors are colour coded with 5

bands, 2% tolerance has 4. IEC 62 colours are used.

Solvent Resistance

The body protection and marking are resistant to all normal

industrial cleaning solvents suitable for printed circuits.

f1f2

f1 – f2≤ 1.4 mm

Metal Film Resistors

MFR Series

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Issue D · 05.07

Welwyn Components

137

CECC 40101-019 CECC 40101-803 Actual Performance

Requirements Requirements Maximum Typical

Load at commercial rating :

1000 hours at 70°C ∆3 hparG eeS9.0% R

Load at CECC rating :

1000 hours at 70°C ∆R % 2 1 0.5 See Graph 3

Shelf life :

12 months at room temperature ∆R % Not specified Not Specified 0.1 0.07

C°551 ta orezC°551 ta orezgnitareD

Short term overload ∆R % 0.5 0.25 0.25 0.01

Climatic ∆R % 2 1 0.5 0.2

65/521/5565/521/55yrogetac citamilC

Long term damp heat ∆R % 2 1 0.5 0.3

Temperature rapid change ∆R % 0.5 0.25 0.25 0.04

Resistance to solder heat ∆R % 0.5 0.25 0.25 0.07

Vibration and bump ∆R % 0.5 0.25 0.1 0.01

Noise. (in a decade of frequency) µV/V Not Specified Not Specified 0.1 0.07

Insulation resistance ohms >1G >1G >1G >1G

nim 007nim 007nim 005nim 007stlovfoorp egatloV

tseuqer nopu elbaliava ataDgnildnah esluP

Performance Data - Type MFR 5

Type

Value (use IEC62 code)

Tolerance (use IEC62 code)

Ordering Procedure

Example: Professional grade MFR4 at 4.7 kilohms and 1% tolerance in ammo pack box of 5000 pieces -

Metal Film Resistors

MFR4 - 4K7 F I

CMFR3, MFR4

MFR5

MFR4

MFR5

* For CECC released product state on order the CECC number and style.

Example: MFR4-4K7FI CECC40101-019 FZ

0.5%

Packing / Grade

Issue D . 05.07

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

Ammo

5000/box

2500/box

5000/box

2500/box

CECC release is not available for commercial grade

CECC release is optionally available for professional grade *

MFR Series