MP330 Caddock, MP330 Datasheet
MP330
Manufacturer Part Number
MP330
Description
(MP312 / MP330) Power Film Resistors
Manufacturer
Caddock
Datasheet
1.MP330.pdf
(1 pages)
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www.DataSheet4U.com
© 2004 Caddock Electronics, Inc.
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
† MP312 15 Watt power rating based on chassis mounting on a
resistance films fired onto a ceramic substrate which is thermally bonded to an
anodized aluminum base.
surface for improved heat transfer, the high power capabilities of these unique
resistors can provide increased packaging densities in many types of
electronic equipment.
Power Film Resistors include:
•
•
•
•
•
Stacked Type MP Power Film Resistor Assemblies
resistors between aluminum heat dissipating plates - provide a
simple means of further improving packaging densities.
area show the high power levels that can be achieved with
forced air cooling and with convection cooling in either vertical or
horizontal orientation.
MP312
MP330
Model
6" X 4" X 2" X .040" aluminum chassis, MP312 free air rating is
2.5 Watts at 25°C. MP330 30 Watt power rating based on
chassis mounting on a 7"X 5" X 2" X .040" aluminum chassis,
MP330 free air rating is 5.0 Watts at 25°C.
Two case sizes that provide 15 Watt and 30 Watt ratings.
Operation up to 275°C.
Single screw mounting to simplify attachment to the chassis or other heat
conducting surface.
A molded silicone case that encapsulates the resistor assembly to meet
stringent environmental specifications.
Extended life stability better than 0.01% per 1,000 hours has been
demonstrated through a 5
load life testing.
No.
Type MP Chassis Mounted Power Film Resistors are made with Micronox ®
The special performance features of these Type MP Chassis Mounted
18
16
14
12
10
100
Stacked Type MP assemblies - constructed by bolting
These charts of power ratings versus air flow and chassis
8
6
4
2
0
80
60
40
20
0
Watt-
age
15
30
Data is for 25°C air at 1 atmosphere,
ducted around resistors in the stack
with 2" x 2" x .04" aluminum plates
between resistors. To derive total
airflow required for stack, multiply
airflow/each resistor by the number
of resistors in the stack. Ducting is
not required when designing for
convection.
FOR STACKED MP312 POWER RESISTORS
Chassis Mounted Precision Power Film Resistors with Center Screw Mounting
25
†
.2 .3 .4
AMBIENT TEMPERATURE, °C
AIR FLOW (CFM)/EACH RESISTOR
Voltage
Max.
300
450
DERATING CURVE
75
MP312 and MP330 Power Film Resistors
POWER RATING
.7 1
Strength
Dielect.
125
1,000
CONVECTION COOLING -
PLATES IN HORIZONTAL PLANE
600
2
CONVECTION COOLING -
PLATES IN VERTICAL PLANE
175
3 4
Temp
TC
High
50
50
††
1
CAD
225
/
7 10
2
By mounting this assembly directly to a metal
10 Ω
10 Ω
year, 50,000 hour program of continuous
Min.
Resistance
For Caddock Distributors listed by country see caddock.com/contact/dist.html
275
20 30
200 K
200 K
Max.
e-mail: caddock@caddock.com • web: www.caddock.com
DOC
.600 (15.24)
.850 (21.59)
A
Dimensions in inches and (millimeters)
30
25
20
15
10
5
0
FOR CHASSIS MOUNTED SINGLE RESISTORS
-1
2
1
0
1
-55
†† TC: 50 ppm/°C referenced to +25°C, ΔR
.188 (4.78)
.250 (6.35)
Data is for 25°C still air at
1 atmosphere. Chassis material:
Aluminum, .040" thick.
2
K
taken at +150°C and +275°C. (Low temp.
TC will be nominally -85 ppm/°C at -55°C.
See typical R-T curve.)
TYPICAL R-T CURVE
0
POWER RATING
CHASSIS AREA (SQ. IN.)
B
4
TEMPERATURE, °C
50
6
10
100
.185 (4.70)
.250 (6.35)
C
20
150
40 60 100
200
.092 (2.34)
.142 (3.61)
250
D
Specifications:
Resistance Tolerance:
on special order).
Insulation Resistance: 10,000 Megohms min.
Terminal Strength:
Cond. A (Pull Test) 5 lbs., and Cond. B (Bend
Test), ΔR 0.2% max. or 0.2 ohm max., whichever
is greater.
Thermal Shock: Mil-R-39009, ΔR 0.5% max. or
0.2 ohm max., whichever is greater.
Momentary Overload: 2 times rated power with
applied voltage not to exceed 1.5 times maximum
continuous operating voltage for 5 seconds,
ΔR 0.5% max. or 0.2 ohm max., whichever is
greater.
Moisture Resistance: Mil-Std-202, Method 106,
ΔR 0.5% max. or 0.2 ohm max., whichever is
greater.
Load Life:
power, ΔR 1% max. or 0.2 ohm max., whichever
is greater. Power rating dependent upon chassis
area. See power rating graphs.
Shock, Medium Impact:
Method 205, Cond. C.
Vibration, High Frequency:
Method 204, Cond. B, ΔR 0.2% max. or 0.2 ohm
max., whichever is greater, through shock and
vibration sequence.
Terminals: Gold Plated Solder Lugs.
D - HOLE FOR MOUNTING
ALUMINUM BASE
Mil-R-39009, 1,000 hours at rated
B
DIMENSIONS IN INCHES AND (MILLIMETERS)
Riverside, California 92507-2364
100
CADDOCK
MP312
15 W
Mil-Std-202, Method 211,
40°
±3°
Sales and Corporate Office
A
1%
±1% (other tolerances
Phone: (951) 788-1700
1717 Chicago Avenue
50G, Mil-Std-202,
B
2
Fax: (951) 369-1151
C
Mil-Std-202,
28_IL123.1004
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