High Power Resistors
Type MPH Series
Literature No. 1773250
Issued: 11-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
Key Features
■50 Watt High Power
Dissipation
■Extremely Low Ohmic Values
■Low Inductance
■High Stability
■Kelvin Terminations
■Low TCR
Type MPH Series
The MPH resistor complements the
MPX Series by adding an even higher
power rating. With this, user in the area
of low ohmic precision can add a 50W
device when mounted on a suitable
heatsink. By using metal foil on a good
heatsink high stability is achieved.
Uniform current and power dissipation
are the result of tin plated copper
terminations with a large surface area.
Because of the planar construction the
MPH resistor is also non-inductive. The
materials used and robust construction
guarantee high reliability. The 4
terminal version (Kelvin terminations)
can be used where high stability,
temperature stability and thermal
energy are required.
Characteristics -
Electrical MPH323025 / MPH323818 MPH543825H / MPH344618
Resistance Range: R01 - 100R R001 - 100R
Power Rating: 3W (70°C) without heatsink 3W (70°C) without heatsink
(5W for MPH543825H)
40W with heatsink 40W with heatsink
(50W for MPH543825H)
Thermal Resistance Rthj-c: 2.0 K/W 1.6 K/W
Tolerances: from R001: 1%, 5%
from R005: 0.5%, 1%, 5%
from R010: 0.1%, 0.5%, 1%, 5% 0.1%, 0.5%, 1%, 5%
from R020: 0.1%, 0.5%, 1%, 5% 0.1%, 0.5%, 1%, 5%
Stability: 0.1%, 0.5% 0.1%, 0.5%
(depends on stress) (depends on stress)
Temperature Coefficient: ±15ppm/°C (20°C to 60°C) ±15ppm/°C (20°C to 60°C)
±25ppm/°C (20°C to 60°C) ±25ppm/°C (20°C to 60°C)
F Terminal F Terminal
MPH323025 / MPH323818 TCR Shift (see table below)
Voltage Proof: 500 VDC 500 VDC
Thermal EMF: 1µV/°C 1µV/°C
Maximum Current: 150A / (200A F Terminal) 150A / (200A F Terminal)
Characteristics -
Mechanical
Resistor Material: Metal Foil CuNiMn (to DIN 17471)
Substrate: Anodized Aluminium
Housing: Epoxy
Connector Material: Cu Tinned, 2 and 4 pin
Maximum Torque Back-Plate: 1Nm
Characteristics -
Environmental
Operating Temperature Range: -40°C to 130°C
Temperature Coefficient TCR Shift
-40 -20 0 20 40 60 80 100 120 140
2000
1000
0
-1000
-2000
-3000
-4000
-5000
-6000
-7000
∆R/R (ppm)
Heatsink - Temperature (°C)
+ 15 ppm/K
- 15 ppm/K
Limit 2 (3δ)
Nominal ∆R/R
Limit 1 (3δ)
2 5 10 20 50 100 200
250
200
150
100
50
0
TCR - Shift (ppm/K)
Resistance Value (mOhm)
High Power Resistors
Type MPH Series
Literature No. 1773250
Issued: 11-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
Dimensions -
MPH343825 MPH323025
MPH344618 MPH323818
MPH343825---F MPH343825H
Power Derating Curve
25 50 85 100 115 130
120
100
80
60
40
20
0
Power (% from nominal power)
Temperature of the Backplate (°C)
0.5%
0.2%
0.1%
High Power Resistors
Type MPH Series
Literature No. 1773250
Issued: 11-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
MPH 3 43825 R001 B K
3 –3 Watts
5 – 5 Watts
(MPH543825H)
Power Rating
23025
23818
43825
42825H
44618
Style Resistance Value
B – 0.1%
C – 0.25%
D – 0.5%
F – 1%
G – 2%
J – 5%
Tolerance
A
F
K
Lead
MPH –
Low Ohmic
Power Resistor
Common Part
How to Order
Terminations
0.001 Ohm
(1 milli Ohm)
R001
0.01 Ohm
(100 milli Ohm)
R01
1 Ohm
(1.0 Ohm)
1R0
10 Ohms
(10 Ohms)
10R
100 Ohms
(100 Ohms)
100R
