MCH Series
Military Grade High Voltage Chip Resistors
OhmCraft’s revolutionary fine line, thick film technology, called
FineFilm,
provides an
entirely new level of stability and voltage ratings in chip resistors. Our MCH series of resistors meets
the same high standards as our HVC series, but with the added feature of an extended temperature range.
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The usual hybrid technologies for manufacturing resistors
depend upon composite materials that have limitations.
Traditional thick-film methods severely limit
performance characteristics and thin-film methods are
limited in attainable ohmic values. The
FineFilm
method
of manufacturing offers the best characteristics of both
methods, plus adds many unique features.
FineFilm
resistors feature a longer, high-aspect ratio trace of lower
resistivity film. The combination of long line, high-
aspect ratio, and higher conductivity film, give
FineFilm
Voltage Ratings to 40,000 Volts
Ohmic Values to 1,000 Gigohms
Ultra High Stability
Tight Tolerances ( to 0.1% )
Low TCR and VCR
Very Low noise
Extended Temperature Range
(-55ºC to +125ºC)
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Custom Configurations
resistors unmatched design efficiency, versatility, linearity,
stability and low noise. The
FineFilm
method allows
control of process parameters to very tight tolerances. The
result is chip resistors with outstanding stability and high
voltage ratings.
Using the same method, a complete line of
FineFilm
leaded
resistors, dividers and networks are manufactured. For
information on those products, please refer to the
appropriate data sheets.
Maximum Continuous Voltage:
FineFilm
high voltage chip resistors offer voltage
ratings that are much higher than conventional screen
printed resistors of the same size and resistive value.
3500
3000
Max. Voltage
Maximum Continuous Voltage Ratings
OhmCraft
Conventional
2500
2000
1500
1000
500
0
0402 0503 0603 0805 1005 1206 1505 2010 2208 2512 3512
Ratings
0402
Max. Power (W)
Max. Voltage
2
(V)
(In air)
Max. Voltage (V)
(Potted)
Resistance Range
(ohms)
0.040
300
4000
1K-
20G
0503
0.050
350
6000
1K-
200G
0603
0.060
400
6000
1K-
300G
0805
0.200
600
10K
1K-
350G
1005
0.250
750
13K
1K-
450G
Case Size
1
1206
0.330
1000
16K
1K-
500G
1505
0.330
1200
19K
5K-
750G
2010
1.000
1700
30K
10K-
1T
2208
0.750
2000
35K
5K-
1.5T
2512
2.000
2500
40K
10K-
2.0T
3512
3.000
3500
50K
10K-
2.0T
Note 1: Other standard & custom case sizes are available including: 0403, 0502, 0504, 1004, 1210 & 2510
Note 2: The continuous maximum voltage applied cannot exceed the maximum power rating.
MCH0211
Dimensions
Wrap-around
Type B & U
terminations
Case Size
?
0402
0403
0502
0503
0504
0603
0805
Length (L)
(mils)
40 + 5
40 + 5
50 (+10,-5)
55 (+10,-5)
50 (+10,-5)
63 (+10,-5)
79 (+10,-5)
100 (+10,-5)
100 (+10,-5)
126 (+10,-5)
126 (+10,-5)
150 (+10,-5)
200 (+10,-5)
225 (+10,-5)
250 (+10,-5)
250 (+10,-5)
350 (+10,-5)
Width (W)
(mils)
20 + 3
30 + 5
25 + 5
30+ 5
40+ 5
31 + 5
50 + 5
40 + 5
50 + 5
63 + 5
98 + 5
50 + 5
100 + 5
75 + 5
100 + 5
125 + 5
125 + 5
Thickness (T)
Max. (mils)
20
20
20
20
20
20
25
25
25
30
30
30
30
30
30
30
30
Pad (D)
(mils)
10 (+ 5)
10 (+ 5)
10 (+ 5)
6 (+ 2)
6 (+ 2)
10 (+10,-5)
10 (+10,-5)
15 (+10,-5)
15 (+10,-5)
15 (+10,-5)
15 (+10,-5)
15 (+10,-5)
20 (+10,-5)
20(+10,-5)
20 (+10,-5)
20 (+10,-5)
20 (+10,-5)
L = Length
W = Width
T = Thickness
D = Pad dimension
Bondable
Type G & S
terminations
1004
1005
1206
1210
1505
2010
2208
2510
2512
3512
How to build a part number….
Type
Case size
TCR
1
Value
2
Tolerance
3
Termination
MCH
High Voltage See dimension E = + 25ppm/ºC
Chip
table above
H = + 50ppm/ºC
K = + 100ppm/ºC
L = + 200ppm/ºC
Note 1: TCR measured from –55
º
C to +125
º
C.
Note 2: Value is dependent on case size.
Note 3: Tolerance is dependent on case size & value.
Resistance value
expressed as a four
digit number where
the first three num-
bers are the signifi-
cant value, and the
forth number is the
number of zeros.
Example:
For a High Voltage, 125 Meg-ohm resistor with case size of 0805,
a TCR of + 50 ppm/C, a +1% tolerance, and wrap-around solderable
terminations - the part number would be:
MCH0805H1256FB
B = + 0.1 %
C = + 0.25 %
D = + 0.5 %
F = + 1.0 %
G = + 2.0%
J = + 5.0 %
K = + 10 %
N = + 15 %
L = + 20 %
M = + 30 %
P = + 50 %
B =
Solderable wrap-around
(solder coated with nickel
barrier)
S =
Solderable single surface
(flip-chip)
G =
Wire Bond able (gold)
U =
Bondable wraparound
(gold)
RHOPOINT COMPONENTS
Hurst Green, Oxted, Surrey, RH8 9AX
Tel: +44 (0) 1883 717988
Fax: +44 (0) 1883 712938
Email: sales@rhopointcomponents.com
Web: www.rhopointcomponents.com
MCH0211
