Cement Resistor - Cement Resistor - Series

Written by MFR Series

Tuesday, 10 June 2008 21:15

Metal Film Resistors - MFR Series

Metal Film Resistors - MFR Series

METAL FILM RESISTORS - MFR Series

Type

Popwer

FEATURES

MFR-12:

1/6W; 1/8W

MIL-R-1059F.

MFR-25:

1/4W

MFR-12, MFR-25, MFR-50, MFR-100, MFR-200.

MFR-50:

1/2W

(RN-50, RN-55, RN-60, RN-65, RN-70)

MFR-100:

Resistance Tolerance :

±0.05%, ±0.1%,± 0.25%, ±0.5%,± 1%

MFR-200:

T.C.R. :

15ppm, 25ppm, 50ppm, 100ppm

INTRODUCTION

The MF series Metal Film Resistors are manufactured using vacuum sputtering system to deposit multiple layers of mixed metals and passivative materials onto a carefully treated fight grade ceramic substrate, the resistors are coated with layers of light-blue lacquer.

DIMENSIONS:

STYLE

DIMENSION (mm)

POWER RATING

VALUE

ΦD

Φd

(Watt)

RANGE

MFR-12

3.2±0.2

1.8±0.3

28±2

0.43±0.02

1/6W 1/8W

1~10MΩ

MFR-25

6.0±0.2

2.3±0.3

28±2

0.5±0.02

1/4W

1~10MΩ

MFR-50

9±0.5

3.2±0.3

26±2

0.6±0.02

1/2W

1~10MΩ

MFR-100

11.0±0.5

4.5±0.5

35±2

0.7±0.02

1~10MΩ

MFR-200

15.0±0.5

5.0±0.5

32±2

0.8±0.02

1~10MΩ

MFR-300

17.0±0.5

6.0±0.5

32±2

0.8±0.02

1~10MΩ

ELECTRICAL CHARACTERISTICS:

Style

MF-12

MF-25

MF-50

MF-100

MF-200

Power Rating 70^oC

1/6; 1/8W

1/4W

1/2W

Operating Temp. Range

-55^oC ~ +155^oC

Max. Working Voltage

200V

250V

350V

500V

Max. Overload Voltage

400V

600V

700V

1000V

Dielectric Withstanding Voltage (AC)

300V

500V

700V

1000V

Max. Intermittence Overload Voltage

400V

600V

700V

1000V

Value Range: ±0.25%, ±0.5%, ±1%

10Ω ~1MΩ

Value Range: ±0.05%, ±0.1%

100Ω ~100KΩ

Temp. Coefficient (by Type)

±15ppm, ±25ppm , ±50ppm, ±100ppm

ENVIRONMENTAL CHARACTERISTICS :

PERFORMANCE TEST

TEST METHOD

APPRAISE

Short Time Overload

JIS-C-5202 5.5 : 2.5 times RCWV for 5 seconds

±(0.75%+0.05)Ω

Dielectric Withstanding V.

JIS-C-5202 5.7 : in V-Block for 60 seconds

By Type

Temperature Coefficient

JIS-C-5202 5.2 : -55^oC ~+155^oC

By Type

Insulation Resistance

JIS-C-5202 5.6 : in V-Block

≧1000 MΩ

Solderability

JIS-C-5202 6.5 : 230^oC for 5±0.5 seconds

95% min. coverage

Resistance to Solvent

JIS-C-5202 6.9 : Trichroethance for 1 min. with ultrasonic

no deterioration

Terminal Strength

Direct load for 10 sec. In the direction of the terminal leads

≧2.5KG/24.5N

Pulse Overload

JIS-C-5202 5.8 : 4 time RCWV 10000 cycles(1 sec.on, 25 sec.off)

±(2%+0.05)Ω

Load Life in Humidity

JIS-C-5202 7.9 : 40±2^oC, 90~95% RH at RCWV for 1000 hrs

±(3%+0.05)Ω

(1.5hrs. on, 0.5 hrs. off)

Load Life

JIS-C-5202 7.10 : 70^oC at RCWV for 1000hrs (1.5hrs.on, 0.5hrs.off)

±(3%+0.05)Ω

Temperature Cycling

±(1%+0.05)Ω

Soldering Heat

±(1%+0.05)Ω