General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print. A subsidiary of
TT electronics plc
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com MHP TO-247 Series Issue May 2010
MHP TO-247 Series
Power Resistor
• TO-247 housing
• Low inductance and capacitance for high frequency circuits
• Available in 100W or 140W
• High stability film resistance elements
• RoHS compliant terminations
• Insulated metal back plate
• Approved to DSCC drawing 07019
Electrical Data
IRC’s MHP series resistors satisfy demanding applications for accurate
and stable power resistors housed in the convenient TO-247 case. The
resistance element is isolated from the mounting tab by an alumina ceramic layer, providing very low thermal
resistance and ensuring high insulation resistance between terminals and metal back plate. The non-inductive
design makes these products especially useful in high frequency and high speed pulse applications.
Type Power Rating1Voltage
Rating4
Thermal
Resistance
Resistance
Range Tolerances
Nominal
Resistance
Series5
Typ. TCR
(ppm/°C)
Induc-
tance
Capaci-
tance
Heatsink2Free Air3Min Max
MHP100 100W 3W 700V 1.3°C/W
0.01Ω0.09Ω
±1%, ±5%
E24
Includes
2.5 & 5.0
multiplier
See Chart <12nH <3pF
0.1Ω9.1Ω
10Ω51KΩ
MHP140 140W 3W 700 V 0.9°C/W
0.01Ω0.09Ω
±1%, ±5%
E24
Includes
2.5 & 5.0
multiplier
See Chart <13nH <4pF
0.1Ω9.1Ω
10Ω51KΩ
1Maximum current 25 amps
2Power rating based on 25°C case temperature
3Power rating based on 25°C ambient temperature-
4Maximum voltage 700V or P x R
5Contact factory for availability of resistance or tolerance
values outside this range
√
MHP TO-247 Series
Frequency Characteristics
1K
100
10
1
10K 100K 1M 10M 100M 1G
Frequency(Hz)
Impedance (ohms)
MHP100/140LF 10R0 F
MHP100/140LF 100R F
MHP100/140LF 1K0 F
Pulse Energy Durability
10K
1K
100
10
Pulse Width (seconds)
Pulse Peak (Watts)
10µ 100µ 1m 10m 100m
MHP140
MHP100
Safety Zone
Damage Level
MHP TO-247 Series Issue May 2010
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
MHP TO-247 Series
Power Resistor
Physical Data
Test Method Specification - Performance
Thermal Shock MIL-STD-202 Method 107 Condition F ±0.30% + 50mΩ
Moisture Resistance MIL-STD-202 Method 106 ±1.0% + 50mΩ
Vibration MIL-STD-202 Method 204 Condition D ±0.25% + 50mΩ
Load Life MIL-STD-202 Method 108 1,000 Hours ±1.0% + 50mΩ
Resistance to Solder Heat MIL-STD-202 Method 210 Condition B ±0.25% + 50mΩ
Dielectric Withstanding Voltage MIL-STD-202 Method 301 2200 volts DC or 2500 volts AC;
60 seconds
Insulation Resistance (between terminal and
tab) MIL-STD-202 Method 302 >1000MΩ>
Solderability 230 ± 5°C, 3sec. >75% coverage
Operating Temperature Range -55°C to +155°C
Environmental Data
* During soldering, the soldering temperature profile must not cause the metal tab of this device to exceed 220°C.
Dim In (nom) mm
A0.630 16.0 ±0.2
B0.787 20.0 ±0.5
C0.189 4.8 ±0.2
ØD 0.140 3.55 ±0.1
E0.571 14.5 ±0.5
F0.201 5.1 ±0.5
G0.143 3.63 ±0.2
H0.032 0.8 ±0.05
J0.032 0.8 ±0.05
K0.429 10.9 ±0.1
Lead Material Tin Plated Copper
Tab Material Nickel Plated Copper
ØD
C
L
C
L
F
B
E
G
J
C
H
A
K
Note: Metal tab is electrically isolated. C
L
Tab, Ni Plated Cu
Substrate, Alumina
Resistor, Ni-Cr or RuO
Conductor, Cu
Leads, Sn Plated Cu
Case, Epoxy UL94-V0
Insulated Between Tab and Resistor
MHP TO-247 Series Issue May 2010
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
MHP TO-247 Series
Power Resistor
For additional information or to discuss your specific requirements, please contact our
Applications Team using the contact details below.
Ordering Data
Prefix TFP - MHP100LF - 1R50 - J - L07
Style
MHP100LF = 100W, TO-247 style power resistor
07019 = DSCC drawing (07019) ver. of above
MHP140LF = 140W, TO-247 style power resistor
Resistance Code
4-digit resistance code.
Ex: 10R0 = 10Ω, 1K00 = 1KΩ
Absolute Tolerance Code
J = ±5%; F = ±1%
Standard Packaging
L07 = RoHS compliant PE tray (50 pcs per tray)
Application Notes:
1. Insulating material is unnecessary between the heat sink
and the tab, as the resistor film is isolated by the internal
alumina substrate.
2. When mounting with a fastener, thermal grease is
recommended.
3. Thermal design should satisfy the following equation: Tab
Temperature (TT) + [Thermal Resistance (RqJT) x Power
applied (Watts)] ≤ 155°C over the full operating temperature
of the application.
4. Resistor film temperature is not to exceed 155°C during
operation.
5. This product is RoHS compliant by exemption according to
RoHS directive 2002/95/EC exemptions 5 & 7, as they apply
to lead in glass and internal solder connections.
Temperature Rise Data
Resistor Film Temp Rise with Respect to Flange Temp
Power (Watts)
140
120
100
80
60
40
20
0
∆Tfilm (°C)
0 20 40 60 80 100 120 140
MHP100
MHP140
Typical TCR For Low Values
0.01 0.1 1.0
Resistance (Ohms)
250
200
150
100
50
0
TCR (ppm/°C) 0 to 100°C
Power Derating Data
50
155°
25°
10
100
% of Rated Power
Flange Temperature (°C)
