MRP

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Vishay Mills

Revision: 07-May-12

2

Document Number: 31803

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

DIMENSIONS in inches [millimeters]

MATERIAL SPECIFICATIONS

Element: Copper-nickel alloy or nickel-chrome alloy,

depending on resistance value

Core: Ceramic: Steatite or alumina, depending on physical

size

Coating: Special high temperature silicone

Standard Terminals: Tinned copper clad steal

End Caps: Stainless steel

Part Marking: MILLS, model, value, tolerance, date code

DERATING

MODEL

DIMENSIONS in inches [millimeters]

L

± 0.062 [1.57]

D

± 0.031 [0.79]

LD

± 0.002 [0.051]

MRP1/4

0.230 [5.84]

0.330 [8.38]

0.094 [2.39]

0.020 [0.508]

MRP1/A

0.275 [6.98]

0.375 [9.52]

0.094 [2.39]

0.020 [0.508]

MRP1/2

0.310 [7.87]

0.415 [10.54]

0.094 [2.39]

0.020 [0.508]

MRP001

0.406 [10.31]

0.500 [12.70]

0.094 [2.39]

0.020 [0.508]

MRP01A

0.540 [13.72]

0.640 [16.26]

0.094 [2.39]

0.020 [0.508]

MRP002

0.500 [12.70]

0.600 [15.24]

0.167 [4.24]

0.032 [0.813]

MRP02A

0.500 [12.70]

0.600 [15.24]

0.230 [5.84]

0.032 [0.813]

MRP02B

0.375 [9.52]

0.475 [12.06]

0.167 [4.24]

0.032 [0.813]

MRP02C

0.625 [15.87]

0.725 [18.41]

0.218 [5.54]

0.032 [0.813]

MRP003

0.562[14.27]

0.650 [16.51]

0.167 [4.24]

0.032 [0.813]

MRP03B

0.750 [19.05]

0.845 [21.46]

0.167 [4.24]

0.032 [0.813]

MRP004

0.812 [20.62]

0.900 [22.86]

0.218 [5.54]

0.032 [0.813]

MRP04B

0.875 [22.22]

0.975 [24.76]

0.312 [7.92]

0.032 [0.813]

MRP005

0.932 [23.67]

1.025 [26.03]

0.312 [7.92]

0.032 [0.813]

MRP007

1.188 [30.18]

1.280 [32.51]

0.312 [7.92]

0.032 [0.813]

MRP010

1.780 [45.21]

1.860 [47.24]

0.360 [9.14]

0.040 [1.016]

MRP10B

1.720 [43.69]

1.800 [45.72]

0.312 [7.92]

0.032 [0.813]

MRP015

1.850 [46.99]

1.960 [49.78]

0.475 [12.06]

0.050 [1.270]

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

MRP RESISTOR CHARACTERISTICS

Temperature Coefficient

ppm/°C

± 30 for 10

 and above; ± 50 for 1.0  to 9.9 ; ± 90 for 0.5  to 0.99 

Terminal Strength

lb

5 min (MRP1/4 thru MRP01A) and 10 min (MRP002 and larger)

Dielectric Withstanding Voltage

500 for 1.2 W and smaller; 1000 for 2.25 W and larger

Operating Temperature Range

°C

Characteristic U = - 65 to + 250; Characteristic V = - 65 to + 350

Maximum Working Voltage

V

1.50 [38.10]

min.

L

D

LD

AMBIENT TEMPERATURE IN °C

120

100

80

60

40

20

0

25

- 65

- 50

250

50

350

0150

Characteristic U

Characteristic V

PERFORMANCE

TEST

CONDITIONS OF TEST

TEST LIMITS

(CHARACTERISTIC U) (CHARACTERISTIC V)

Dielectric Withstanding

Voltage

1 min for all others

± (0.1 % + 0.05

) R

± (0.1 % + 0.05

) R

High Frequency

Vibration

Frequency varied 10 Hz to 2000 Hz, 20 g peak,

2 directions 6 h each

± (0.1 % + 0.05

) R

± (0.2 % + 0.05

) R

High Temperature

Exposure

250 h at + 250 °C for U Characteristic,

+ 350 °C for V Characteristic

± (0.5 % + 0.05

) R

± (4.0 % + 0.05

) R

Load Life

2000 h at 25 °C at rated power, 1.5 h “ON”, 0.5 h “OFF”

± (0.5 % + 0.05

) R

± (3.0 % + 0.05

) R

Low Temperature Storage

- 65 °C for 24 h

± (0.2 % + 0.05

) R

± (2.0 % + 0.05

) R

Moisture Resistance

MIL-STD-202 Method 106, 7b not applicable

± (0.2 % + 0.05

) R

± (2.0 % + 0.05

) R

Shock, Specified Pulse

MIL-STD-202 Method 213, 100 g’s for 6 ms, 10 shocks

± (0.1 % + 0.05

) R

± (0.2 % + 0.05

) R

Shock, Thermal

Rated power applied until thermally stable,

then 15 min at - 55 °C

± (0.2 % + 0.05

) R

± (2.0 % + 0.05

) R

Short Time Overload

5 x rated power (1.2 W smaller),

10 x rated power (2.25 W and larger) for 5 s

± (0.2 % + 0.05

) R

± (2.0 % + 0.05

) R

Terminal Strength

Pull test 5 s to 10 s, 5 lb (MRP1/4 thru MRP01A), 10 lb

for all others; torsion test - 3 alternating directions, 360°

each

± (0.1 % + 0.05

) R

± (1.0 % + 0.05

) R