High Precision Chip Resistors PRM

Products

High Precision Chip Resistors PRM

Features

1.It can reduce the area and weight of the PCB for its small size and light.

2.Operating ambient temperature：-55°C~+125°C

3.High credibility: the thick metal film resistor body is added with glass protective layer and the three layers of electrode composition.

4.The appearance dimension is symmetrical and accurate for easy assembling.

5.Resistance tolerance:±0.1%,±0.25%,±0.5%.

Dimensions and voltage Performance of High Precision Chip Resistors PRM​

Part No.

Type

Power

Dimensions（mm）

Max.
working voltage

Resistance range

L

W

H

L1

L2

PRM0402

0402
(1005)

1/16W

1.00±0.01

0.50±0.10

0.30±0.10

0.20±0.10

0.25±0.10

50V

10R~1M

PRM0603

0603
(1608)

1/16W
1/10W

1.60±0.15

0.80±0.15

0.40±0.10

0.30±0.20

0.30±0.20

50V

10R~1M

PRM0805

0805
(2012)

1/10W
1/8W

2.00±0.20

1.25±0.15

0.50±0.10

0.40±0.20

0.40±0.20

150V

10R~1M

PRM1206

1206
(3216)

1/8W
1/4W

3.20±0.20

1.60±0.15

0.60±0.10

0.50±0.20

0.50±0.15

200V

10R~1M

PRM1210

1210
(3225)

1/4W
1/3W

3.20±0.20

2.50±0.15

0.60±0.10

0.50±0.20

0.50±0.20

200V

10R~1M

PRM2010

2010
(5025)

1/2W
3/4W

5.00±0.20

2.50±0.15

0.60±0.10

0.60±0.20

0.60±0.20

200V

10R~1M

PRM2512

2512
(6432)

1W,2W

6.40±0.20

3.20±0.15

0.60±0.10

1.00±0.20

1.00±0.20

200V

10R~1M

Test item

Test condition 

Performance

Temperature coefficient

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

0.1%:
±5ppm/°C~±50ppm/°C
0.25%/0.5%:
±25ppm/°C~±50ppm/°C

Short time overload

2.5 x rated voltage or max.overload voltage(get the lower) for 5 seconds.

ΔR≤±(1%R0+0.05Ω)

Pulse  overload 

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

ΔR≤±(1%R0+0.05Ω)

Resistance to solderling heat

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

ΔR≤±(1%R0+0.05Ω)

Solderability

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

The solderling area is over 95%.

Temperature cycling 

At -55°C for 30min,then at +25°C for 10-15min,then at +155°C for 30min,then at +25°C for 10-15min,total 5cycles.

ΔR≤±(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 half-hour off)at the 40±2°C and 90~95% relative humidity.

ΔR≤ ±(1%0+0.1Ω)

Load life in heat 

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

ΔR≤ ±(1%0+0.1Ω)