MRA-1212R50FE12

MRA
www.vishay.com
Vishay Mills
Revision: 02-May-12
1
Document Number: 31801
For technical questions, contact: ww2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Wirewound Resistors, Non-Magnetic,
Non-Inductive, Axial Lead
FEATURES
High temperature coating (> 350 °C)
Non-magnetic and all welded constructions
greatly enhance frequency response.
Combined with non-inductive Ayrton-Perry
winding the inductive reactance and signal loss
are almost totally eliminated.
Ideal for Audio Industry
Material categorization: For definitions of
compliance please see www.vishay.com/doc?99912
Notes
(1)
Vishay Mills MRA models have two power ratings depending on the operation temperature and stability requirements.
(2)
Other tolerances may be available, contact factory
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
HISTORICAL
MODEL
POWER RATING
(1)
P
25 °C
W
CHARACTERISTIC U + 250 °C
POWER RATING
(1)
P
25 °C
W
CHARACTERISTIC V + 350 °C
TOLERANCE
(2)
%
RESISTANCE
RANGE
WEIGHT
(typical)
g
MRA-05 MRA05 4.0 5.0 1, 5, 10 0.01 to 15.0K 1.00
MRA-10 MRA10 7.0 10.0 1, 5, 10 0.05 to 35.0K 3.87
MRA-12 MRA12 10.0 12.0 1, 5, 10 0.05 to 85.0K 5.02
TECHNICAL SPECIFICATIONS
PARAMETER UNIT MRA 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 10 minimum
Dielectric Withstanding Voltage V
AC
500 for MRA-05 and 1000 for MRA-10 and MRA-12
Operating Temperature Range °C Characteristic U = - 65 to + 250, Characteristic V = - 65 to + 350
Maximum Working Voltage V (P x R)
1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: MRA-1225R00JE12 (visit www.vishay.net Vishay Dale parts numbering manual for all options)
GLOBAL MODEL
(6 digits)
VALUE
(5 digits)
TOLERANCE
(1 digit)
PACKAGING CODE
(3 digits)
SPECIAL
(up to 2 digits)
(See Standard Electrical
Specifications Global
Model column
for options)
R = Decimal
K = Thousand
1R500 = 1.5
1K500 = 1.5 k
F = ± 1.0 %
J = ± 5.0 %
K = ± 10.0 %
E07 = Tape/reel (MRA-10, MRA-12)
E48 = Tape/reel (MRA-05)
E12 = Bulk, up to 100 pc boxes
(Dash Number)
From 1 to 99
as applicable
Historical Part Number example: MRA12W25R0J
MRA12 W = STANDARD 25 5 %
HISTORICAL MODEL TC RESISTANCE VALUE TOLERANCE
RA - 1 2 2 5 R00JE1M 2
MRA
www.vishay.com
Vishay Mills
Revision: 02-May-12
2
Document Number: 31801
For technical questions, contact: ww2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
DIMENSIONS in inches [millimeters]
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core: Ceramic: Alumina
Coating: Special high temperature silicone
Standard Terminals: Tinned copper
End Caps: Copper alloy
Part Marking: MILLS, model, value, tolerance, date code
DERATING
MODEL
DIMENSIONS in inches [millimeters]
L
± 0.062 [1.57]
L
1
Max.
D
± 0.031 [0.79]
LD
± 0.002 [0.051]
MRA-05 0.562 [14.27] 0.650 [16.51] 0.167 [4.24] 0.032 [0.813]
MRA-10 0.875 [22.22] 0.975 [24.76] 0.312 [7.92] 0.040 [1.016]
MRA-12 1.188 [30.18] 1.280 [32.51] 0.312 [7.92] 0.040 [1.016]
1.50 [38.10]
min.
L
D
LD
L
1
RATED POWER IN %
AMBIENT TEMPERATURE IN °C
120
100
80
60
40
20
0
25
- 65
- 50 25050 350
0 150
Characteristic U
Characteristic V
PERFORMANCE
TEST CONDITIONS OF TEST
TEST LIMITS
(CHARACTERISTIC U) (CHARACTERISTIC V)
Dielectric Withstanding
Voltage
1000 V
RMS
, 1 min ± (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 rated power, + 25 °C, 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 ± (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
Thermal Shock
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 (5 W smaller),
10 x rated power (7 W and larger) for 5 s
± (0.2 % + 0.05 ) R ± (2.0 % + 0.05 ) R
Terminal Strength
5 s to 10 s 10 pound pull test;
torsion test - 3 alternating directions, 360 ° each
± (0.1 % + 0.05 ) R ± (1.0 % + 0.05 ) R
Legal Disclaimer Notice
www.vishay.com
Vishay
Revision: 08-Feb-17
1
Document Number: 91000
Disclaimer
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MRA-1212R50FE12

Mfr. #:
Manufacturer:
Vishay
Description:
Wirewound Resistors - Through Hole 12watt 12.5ohm 1%
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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