High Precision Metal Film Fixed Resistors PMF

Products 

High Precision Metal Film Fixed Resistors PMF 

Features

1.Low temperature coefficient ,high precision ,and good high frequency performance .

2.Operating ambient temperature：-55°C ~+155°C

3.Film the metal in Vacuum ,the surface coating is green resin with the good waterproof .

4.Resistance tolerance: ±0.5%，±0.1%.

Part No.

Power

Resistance tolerance

Dimensions

Max. working
Voltage

Max. overload voltage

Max. insulation
voltage

L±1

D±0.5

d±0.05

PMF016

1/8W

0R~22M

3.5

1.7

0.41

150V

300V

300V

PMF016

1/6WS

0R~22M

3.5

1.7

0.41

150V

300V

300V

PMF14S

1/4WS

0R~22M

6.0

12.3

0.45

250V

500V

500V

PMF014

1/4W

0R~22M

6.0

2.3

0.45

250V

500V

500V

PMF12S

1/2WS

0R1~22M

9.0

3.2

0.58

350V

700V

700V

PMF012

1/2W

0R1~22M

9.0

3.2

0.58

350V

700V

700V

PMF01S

1WS

0R1~22M

11.0

4.5

0.75

500V

1000V

1000V

PMF01B

1W

0R1~22M

11.0

4.5

0.75

500V

1000V

1000V

PMF02S

2WS

0R1~22M

15.0

5.0

0.75

500V

1000V

1000V

PMF02B

2W

0R1~22M

15.0

5.0

0.75

500V

1000V

1000V

PMF03S

3WS

0R1~22M

24.0

8.0

0.75

700V

1200V

1000V

PMF03B

3W

0R1~22M

24.0

8.0

0.75

700V

1200V

1000V

PMF05S

3WS

0R1~22M

24.0

8.0

0.75

700V

1200V

1000V

Test Item

Test Condition

Performance 

Temperature Coefficient

The resistance value at normal temperature and normal temperature added 100°C, calculate per °C resistance value change rate.

±15ppm/°C~
±50ppm/°C

Short Time overload

10×rated voltage or Max. overload voltage(get the lower) for 5 seconds.

R≤±(0.5%R0+0.05Ω)

Pulse overload

At 4×rated voltage or Max. pulse overload voltage(get the lower)cycle 10000±200times(1second on,25 seconds off).

R≤±(1%R0+0.05Ω)

Resistance to soldering Heat

Immerge into the 350±10°C tin stove for 2~3seconds. 

R≤±(0.5%R0+0.05Ω)

Solderability

Immerge into the 245±3°C tin stove for 2~3seconds.

The soldering area is over 95%.

Temperature cycling

At -55°C for 30 min. ,then at+25°C for 10~15°C,then at +125°C for 30 min., then at +25°C for 10~15 min., total 5cycles.

R≤±(0.5%R0+0.05Ω)

Load life in humidity

Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 40±2°C and 90~95% relative humidity.

R≤±(2%R0+0.05Ω)

Load life in heat 

Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 70±2°C.

R≤±(2%R0+0.05Ω)