Power Resistors
MTR Series
Features
TO-220 / TO-247 style power package
Molded case for protection and easy mounting
Electrically isolated case
Non-Inductive design
Part Numbering System
MTR
20
J
B
D
1001
-H
Product
Type
Power
20: 20 Watts
30: 30 Watts
35: 35 Watts
50: 50 Watts
100: 100 Watts
Resistance
Tolerance
D: ±0.5%
F: ±1%
J: ±5%
K: ±10%
Packaging
Code
B: Bulk
TCR
(PPM/°C)
D: ±50
E: ±100
F: ±200
G: ±300
-:No Specified
Resistance
R100: 0.1Ω
0100: 10Ω
4700: 470Ω
1001: 1000Ω
1002: 10000Ω
Code
H: Mounting Hole
Construction
Power Package
Type
MTR20
MTR30
MTR35
Power Package
TO-220
TO-220
TO-220
TO-220
TO-220
TO-247
1
Alumina Substrate
2
Resistor Layer
3
Lead
4
Molded Package
MTR50
MTR50-H
MTR100
Rev.7
Power Resistors
MTR Series
Environmental Characteristics
Item
Temperature Coefficient of
Resistance (T.C.R.)
Short Time Overload
Load Life
Damp Heat with Load
Solderability
Thermal Shock
Terminal Strength
Vibration, High Frequency
Requirement
As Specified.
ΔR±0.3%
ΔR±1.0%
ΔR±0.5%
90% min. coverage
ΔR±0.3%
ΔR±0.2%
ΔR±0.2%
Test Method
Referenced to 25°C,
ΔR
taken at +105°C
2 times rated power with applied voltage not to exceed 1.5 times
maximum continuous operating voltage for 5 seconds
2,000 hours at rated power
40±2°C, 90~95% R.H. Max. working voltage for 1000 hrs with 1.5 hrs
“ON” and 0.5 hrs “OFF”
245±5°C for 3 seconds
-65°C ~150°C, 100 cycles
(Pull Test) 2.4N
20g peak
Lead Material: Tinned Copper
Maximum Torque: 0.9 N-m
Without a Heat Sink, When in Free Air at 25°C, it is rated for 2.25W.
The Case Temperature is to be used for the Definition of the Applied Power Limit.
The Case Temperature Measurement Must be Made with a Thermocouple Contacting the Center of the Component Mounted on the Designed
Heat Sink.
Thermal Grease Should be Applied Properly.
Rev.7
Power Resistors
MTR Series
MTR20
Dimensions
Type
MTR20
Weight (g)
(1000pcs)
1290
Derating Curve
Electrical Characteristics Specifications
Resistance Range
Item
TCR (PPM/°C)
±0.5%
Type
-
-
MTR20
-
-
0.05Ω -1Ω
>1Ω -3Ω
>3Ω -10Ω
>10Ω –10KΩ
Operating Voltage: 350Vmax
Dielectric Strength: 1800V
AC
Insulation Resistance: 10GΩ
min.
Working Temperature Range: -65°C to +150°C
Resistance Value< 1Ω is available
±300
±100
±200
±50
±100
±200
±1%
±5%
±10%
Rev.7
Power Resistors
MTR Series
MTR30
Dimensions
Type
MTR30
Weight (g)
(1000pcs)
1155
Derating Curve
Electrical Characteristics Specifications
Resistance Range
Item
±0.5%
Type
-
-
MTR30
-
-
0.05Ω -1Ω
>1Ω -3Ω
>3Ω -10Ω
>10Ω –10KΩ
±300
±100
±200
±50
±100
±200
±1%
±5%
±10%
TCR (PPM/°C)
Operating Voltage: 420Vmax
Dielectric Strength: 1800V
AC
Insulation Resistance: 10GΩ
min.
Working Temperature Range: -65°C to +150°C
Resistance Value < 1Ω is available
Rev.7
Power Resistors
MTR Series
MTR35
Dimensions
Weight (g)
(1000pcs)
1902
Type
MTR35
Derating Curve
Electrical Characteristics Specifications
Item
Resistance Range
Type
0.05Ω - 0.1Ω
>0.1Ω - 1Ω
MTR
>1Ω - 3Ω
>3Ω - 10Ω
>10Ω - 10KΩ
Operating Voltage: 350V
Max
Dielectric Strength: 1800V
AC
Insulation Resistance: 10GΩ min.
Working Temperature Range: -65°C to +150°C
Resistance Value < 1Ω is available
±50
±100
±200
±300
±100
±200
±50
±100
±200
±0.5%
TCR (PPM/°C)
±1%
±5%
－
－
±300
±100
±200
±50
±100
±200
±10%
－
－
±300
±100
±200
±50
±100
±200
Rev.7
