plate-shaped high precision metal film resistor
EU
features
•
Ultra precision T.C.R. up to ±2.5 ppm/°C,
tolerance to ±0.01%
•
Wide resistance range from 10Ω to 1MΩ
•
Marking: Black body color with laser marking
•
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
dimensions and construction
D
L
Film
Substrate
h
MRS1/3
Outer
Coating
Type
MRS1/8
MRS1/4
L (max.)
.220
(5.6)
.295
(7.5)
.098
(2.5)
Dimensions
inches
(mm)
D (max.)
P
H
.100±.008
(2.54±0.2)
.200±.008
(5.08±0.2)
.118±.02
(3.0±0.5)
h (max.)
.244
(6.2)
.354
(9.0)
.150±.008 .315±.079
(3.81±0.2) (8.0±2.0)
Solder
Electrode
Lead
Frame
.020
(0.5)
P
H
.010±.020
(0.25±0.5)
ordering information
Lead Free
MRS
Product
Code
1/3
Size
1/8: 0.125W
1/4: 0.25W
1/3: 0.3W
Please contact
factory for other
available
terminations
S
T.C.R.
(ppm)
S: ±2.5
Y: ±5
T: ±10
E: ±25
D
Terminal Surface
Material
D: SnAgCu
1002
Nominal
Resistance
3 significant
figures + 1 multiplier
“R” indicates decimal
on values <100Ω
T
Resistance
Tolerance
T: ±0.01%
Q: ±0.02%
A: ±0.05%
B: ±0.1%
C: ±0.25%
D: ±0.5%
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/19/11
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
129
resistors
MRS
MRS
plate-shaped high precision metal film resistor
resistors
applications and ratings
Type
T.C.R.
Power
(ppm/°C)
T: ±.01%
Rating
Max.
E96
Y: ±5
––
0.125W T: ±10
––
E: ±25
––
Y: ±5
––
0.25W
T: ±10
––
E: ±25
––
S: ±2.5 100-100k
0.3W
Y: ±5
100-100k
T: ±10 100-100k
Resistance Range (Ω)
Q: ±.02% A: ±.05% B: ±.1% C: ±.25% D: ±.5%
E96
E24/E96 & 25, 50 *10
n
––
100-250k 100-250k 100-250k 100-250k
––
100-250k 100-510k 30-510k 30-510k
––
100-250k 100-510k 10-510k 10-510k
––
100-510k 100-510k 100-510k 100-510k
––
100-510k 100-1M 30-1M
30-1M
––
100-510k 100-1M 10-1M
10-1M
30.1-100k 30.1-100k 30.1-100k
––
––
30.1-100k 10-100k 10-100k
––
––
30.1-100k 10-100k 10-100k
––
––
Absolute Absolute
Rated
Operating
Maximum Maximum
Ambient Temperature
Working Overload
Temperature
Range
Voltage
Voltage
200V
400
-55°C
to
+125°C
MRS1/8
MRS1/4
250V
500
200V
+70°C
MRS1/3
* MRS1/3 is available only in E96 series.
environmental applications
Derating Curve
100
80
% Rated Power
60
40
20
0
-60 -40
-55
Surface Temperature Rise
100
Temperature Rise
(°C)
75
50
MRS1/8
25
MRS1/4
-20
0
20
40
60
80
70
Ambient Temperature
(°C)
100 120
140
125
0
0
25
50
75
100
% Rated Power
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Soldering Heat
Rapid Change of Temperature
Dielectric Withstanding Voltage
Endurance at 70°C
Moisture Resistance
Insulation Resistance
Resistance to Solvent
Requirement
∆
R ±(% + 0.05Ω)
Within specified
tolerance
Within specified
T.C.R.
±0.05%
±0.1%: MRS1/8, 1/4
±0.05%: MRS1/3
±0.1%: MRS1/8, 1/4
±0.05%: MRS1/3
±0.5%: MRS1/8, 1/4
±0.05%: MRS1/3
±0.1%: MRS1/8, 1/4
±0.05%: MRS1/3
±0.1%: MRS1/8, 1/4
±0.05%: MRS1/3
10,000MΩ and more
No abnormality in appearance.
Marking shall be easily legible.
Test Method
25°C
+25°C/+65°C
Rated voltage x 2.5 or max. overload voltage whichever is lower, for 5 seconds
350°C ± 10°C, 3.5 seconds ± 0.5 second
MRS1/8, 1/4: -55 +0-5°C (30 minutes), +125 +3-0°C (30 minutes), 5 cycles
MRS1/3: -55 +0-5°C (30 minutes), +125 +3-0°C (30 minutes), 50 cycles
500V (a.c.) for 1 minute between terminals and coatings
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
40°C ± 2°C, 90 ~ 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
500V (d.c.) for 1 minute
Soaking in 2-propanol of +20°C~25°C for 180 seconds ± 10 seconds
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/29/11
130
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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