Product Main

Specifications

I．Features:

  1. Low temperature coefficient, high precision, low noise and good frequency performance
  2. Resistance Tolerance: ±1%
  3. T. C. R: ±50ppm/℃

II. Dimension and Structure   



Type

Dimension(mm)

Resistance Range

Power

L

D

H

d±0. 05
±1%(F)

MF0204
0. 4W
3. 4±0. 2
1. 9±0. 2
28±2. 0
0. 5
10Ω-1MΩ

MF0207
0. 6W
6. 3±0. 5

2. 4±0. 5

28±2. 0

0. 60
10Ω-1MΩ

III. Derating Curve & Hot-Spot Temperature   

       

IV. General Specification

Type

Operating
Temp. Range

Maximum
Working Voltage
Maximum
Overload Voltage
Dielectric
Withstanding Voltage

Power

MFR0204

0. 4W
-55℃ to +155℃
200V
400V
300V

MFR0207

0. 6W
-55℃ to +155℃
300V
600V
500V


V. Electrical Characteristics

Item

Performance requirement

Test methods

Temperature Coefficient:

±50ppm

JIS5202-5. 2
-55℃ to +155℃
T. C. R=(R2-R1)×1 / R1 ×(T2-T1)(PPM/℃)
R1: Resistance value at room temperature(T1);
R2: Resistance value at room temperature+100℃（T2)

Short time overload:

ΔR≤±（0. 25% R0+0. 05Ω)

JIS5202-5. 5
2. 5 time RCWV for 5 seconds

Insulation Resistance ＞10000MΩ JIS5202-5. 6
In V-Block
Dielectric withstanding voltage By type JIS5202-5. 7
In V-Block for 60 Seconds

Pulse overload

ΔR≤±（1% R0+0. 05Ω）

JIS5202-5. 8
1000 cycles for 1 second on and 25 seconds off at 4
times rated voltage

Resistance to soldering heat:

ΔR≤ ±（0. 25%R0+0. 05Ω)

JIS5202-6. 4
350°C±10°C for 3±0. 5 seconds

Solderability:

The area of soldering is over 95%

JIS5202-6. 5
235°C for 5±0. 5 seconds

Terminal Strength ≥2. 5KG(24. 5N) Direct Load for 10 Sec. in The Direction of The terminal Leads

Temperature cycling:

ΔR≤± (0. 5% R0+0. 05Ω)

JIS5202-7. 4
-65°C→room temp. →150°C→room temp. for 5 cycles

Load life in moisture:

ΔR≤±（2% R0+0. 1Ω)

JIS5202-7. 9
40±2°C, 90～95% RH at RCWV for 1000 hrs
(1. 5 hrs. on, 0. 5 hrs. off)

Load life:

ΔR≤±（2% R0+0. 1Ω）

JIS5202-7. 10
70°C at RCWV for 1000 hrs. (1. 5 hrs. on, 0. 5 hrs. off)