Type MM and ML Precision Film Resistors
High Temperature Resistors for Geophysical, Aerospace and Industrial Requirements
Type MM and ML resistors have a proven performance history in industrial,
computer, military and space applications.
Utilizing our proven Micronox
®
resistance films, these resistors are available with power ratings up to 3 watts
and resistance values to 15 Megohms. These resistors are ideal for
applications requiring tolerances as close as 0.1% and extended life stability of
0.1% per 1,000 hours.
Most models of Type MM and ML resistors are manufactured with
Caddock's Non-Inductive Design that provides for neighboring lines to carry
current in opposite directions. This efficient non-inductive construction is
accomplished without derating of any
performance advantages.
Type MM features:
•
Max. Operating Temperature to +275°C.
•
High Power Rating at +125°C.
•
TC of 50 ppm/°C from -15°C to +105°C.
•
Non-Inductive Performance Available.
MM 112, ML104
MM 125, ML114
MM152, ML124
MM177, ML131
MM215, ML181
MM 216, ML212
MM 217, ML213
MM224, ML218
MM 225, ML219
N
Model
No.
Caddock's
Non-Inductive
Design
Type ML features:
•
Non-Inductive performance at a low cost.
•
TC of 50 ppm/°C from -15°C to +105°C.
MM 236, ML226
Watt-
age
Max.
Voltage
Oper.
Temp.
(Max.)
Dielect.
Strength
Resistance
Min.
Max.
Dimensions in inches and (millimeters)
A
.160
±.010
(4.06
±.26)
.188
±.020
(4.78
±.51)
.250
±.020
(6.35
±.51)
.313
±.020
(7.95
±.51)
.400
±.020
(10.16
±.51)
.625
±.030
(15.88
±.76)
.500
±.030
(12.70
±.76)
1.000
±.030
(25.40
±.76)
.600
±.030
(15.24
±.76)
1.000
±.030
(25.40
±.76)
.160
±.010
(4.06
±.26)
.188
±.020
(4.78
±.51)
.250
±.020
(6.35
±.51)
.313
±.020
(7.95
±.51)
.400
±.020
(10.16
±.51)
.625
±.030
(15.88
±.76)
.500
±.030
(12.70
±.76)
1.000
±.030
(25.40
±.76)
.600
±.030
(15.24
±.76)
1.000
±.030
(25.40
±.76)
B
.065
±.010
(1.65
±.26)
.070
±.015
(1.78
±.38)
.094
±.006
(2.39
±.15)
.094
±.006
(2.39
±.15)
.150
±.010
(3.81
±.26)
.190
±.020
(4.83
±.51)
.250
±.020
(6.35
±.51)
.250
±.020
(6.35
±.51)
.330
±.020
(8.38
±.51)
.330
±.020
(8.38
±.51)
.065
±.010
(1.65
±.26)
.070
±.015
(1.78
±.38)
.094
±.006
(2.39
±.15)
.094
±.006
(2.39
±.15)
.150
±.010
(3.81
±.26)
.190
±.020
(4.83
±.51)
.250
±.020
(6.35
±.51)
.250
±.020
(6.35
±.51)
.330
±.020
(8.38
±.51)
.330
±.020
(8.38
±.51)
C
.016
±.002
(.41
±.05)
.020
±.002
(.51
±.05)
.025
±.002
(.64
±.05)
.025
±.002
(.64
±.05)
.025
±.002
(.64
±.05)
.032
±.002
(.81
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.016
±.002
(.41
±.05)
.020
±.002
(.51
±.05)
.025
±.002
(.64
±.05)
.025
±.002
(.64
±.05)
.025
±.002
(.64
±.05)
.032
±.002
(.81
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
Specifications:
Resistance Tolerance:
±1%
(tolerances to 0.1%
on special order).
Temperature Coefficient:
50 ppm/°C referenced
to +25°C,
∆
R taken at -15°C and +105°C.
Insulation Resistance:
10,000 Megohms, min.
Overload/Overvoltage:
5 times rated power with
applied voltage not to exceed 1.5 times maximum
continuous operating voltage for 5 seconds,
∆
R 0.5%
max. or 0.5 ohm max., whichever is greater.
Thermal Shock:
Mil-Std-202, Method 107,
Cond. F,
∆
R 0.2% max. or 0.5 ohm max.,
whichever is greater.
Moisture Resistance:
Mil-Std-202, Method 106,
∆
R
0.5% max. or 0.5 ohm max., whichever is greater.
Loadlife:
1,000 hours at +125°C at rated power,
not to exceed rated voltage,
∆
R 0.5% max. or 0.5
ohm max., whichever is greater.
Solderable leads
Encapsulation:
Transfer Molded.
1.500
±
.125
(38.10
±
3.18)
A
B
C
MM 112
MM 125
MM 152
MM 177
MM 215
MM 216
MM 217
MM 224
MM 225
MM 236
ML 104
ML 114
ML 124
ML 131
ML 181
ML 212
ML 213
ML 218
ML 219
ML 226
.12
.25
.4
.6
1.0
1.5
1.5
2.0
2.0
3.0
.08
.15
.25
.4
.6
1.0
1.0
1.25
1.25
2.0
200
200
300
500
800
1,000
800
2,000
800
2,000
200
200
300
500
600
1,000
800
2,000
800
2,000
275°C
275°C
275°C
275°C
275°C
275°C
275°C
275°C
275°C
275°C
175°C
175°C
175°C
175°C
175°C
175°C
175°C
175°C
175°C
175°C
400
500
750
750
1,000
1,000
1,500
1,500
2,000
2,000
400
500
750
750
750
1,000
1,500
1,500
2,000
2,000
45
Ω
30
Ω
30
Ω
45
Ω
45
Ω
45
Ω
30
Ω
45
Ω
30
Ω
45
Ω
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
45
Ω
30
Ω
45
Ω
30
Ω
45
Ω
500 K
1 Meg
2 Meg
5 Meg
10 Meg
10 Meg
4 Meg
15 Meg
6 Meg
15 Meg
300 K
500 K
600 K
1 Meg
5 Meg
10 Meg
4 Meg
15 Meg
6 Meg
15 Meg
DIMENSIONS IN INCHES AND (MILLIMETERS)
Models with low inductance construction are in shaded areas.
Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas.
Derating Curve:
100
80
RATED POWER OR 60
RATED VOLTAGE, % 40
A - ML
A
B
B - MM
Ordering Information
:
Model Number:
Resistor Value:
ML124 - 20K - 1%
Tolerance
20
0
25
75
125 175 225 275
AMBIENT TEMPERATURE,
°C
CADDOCK ELECTRONICS, INCORPORATED
1717 CHICAGO AVENUE
RIVERSIDE, CALIFORNIA 92507-2364
PHONE: (909) 788-1700
•
FAX: (909) 369-1151
© 1999 Caddock Electronics, Inc.
CADDOCK
CADDOCK ELECTRONICS EUROPE BV
JUPITERSTRAAT 2, POSTBUS 3018
6460 HA KERKRADE, THE NETHERLANDS
PHONE: (31) 45 5463650
•
FAX: (31) 45 5462860
IL-124.019
