MK120 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – Precision Power Film Radial-Lead Resistors

Type MK Precision Power Film Radial-Lead Resistors
Page 1 of 2
Non-Inductive with Expanded Resistance Range — 1 ohm to 100 Megohms
Here are the precision radial lead resistors that provide
high density packaging in circuit board applications. Available
in three miniature rectangular package configurations with
standard lead spacings, Type MK Precision Power Radial-
Lead Film Resistors now cover the entire resistance range
from 1 ohm to 100 Megohms.
Constructed with Caddock's Micronox^® resistance films
fired onto a solid ceramic substrate, Type MK Precision Film
Resistors combine all of these outstanding advantages:
• ±1% Resistance Tolerance is Standard - tolerances to
±0.1% are available on special order.
• Operating Temperature - from -55°C to +175°C.
• Full Power Rating at +125°C.
• Temperature Coefficient is ≤ 50 ppm/°C from
5 ohms to 5 Megohms and ≤ 80 ppm/°C up to
100 Megohms - referenced to +25°C with the ΔR taken
at -15°C and +105°C.
• Extended Life Stability is Typically Better Than 0.1%
per 1,000 Hours.
• Caddock's Non-Inductive Performance - provides faster
settling times and minimum distortion in all types of high
frequency circuits.
This combination of performance advantages in a small,
standardized case can simplify many engineering and
production problems:
One size of Type MK resistor can replace many sizes of
axial-lead resistors.
This table of "RN" style axial-lead resistors shows the
many sizes and power ratings that can be replaced with one
of the three models of Type MK Precision Film Resistors,
within the maximum allowable voltage ratings.
Comparison of Type MK and "RN" Ratings and Dimensions
Resistor
Type
MK 120
or MK620
Power
Rating
0.50 W
Maximum
Resistance
Mounting
Hole
Spacing
40 Megohms
.150
(3.81)
Even the smallest Type MK
resistor can replace all of these
RN type resistors
MK132, MK132V,
MK632, or MK632V
0.75 W
100 Megohms
.200
(5.08)
RN50
RN55
0.05 W
0.10 W
1 Megohm
5 Megohms
.400
(10.15)
.500
(12.70)
RN50
RN55
RN60
0.125 W
10 Megohms
.625
(15.90)
RN60
RN65
0.25 W
20 Megohms
.875
(22.20)
RN65
RN70
0.50 W
40 Megohms
1.000
(25.40)
RN70
One standard resistor configuration can simplify board
layouts.
With the exceptionally wide range of resistance values
that are available in each model of Type MK Precision Film
Resistors, circuits can now be
designed for maximum
packaging densities
without the need for
leaving extra space where
resistor value changes can
require larger resistors or non-
uniform lead spacings.
Standardization of resistor size can speed
assembly procedures and reduce procurement costs.
The standardization of resistor size can pay additional
dividends by simplifying assembly procedures. The radial
leads do not require additional bending prior to insertion, and
the standard lead spacing can reduce the time required for
assembly.
The combination of higher power ratings and smaller size
can also lower procurement costs. By reducing the wide
variety of sizes and types of axial-lead resistors to a single,
standardized resistor type, unit prices can be lowered and
inventory problems simplified. For specific price and delivery
information, contact our Sales Office.
All outline drawings full size - dimensions in inches and (millimeters).
The largest Type MK - rated at .75 watt - requires less board
space than even the .05 watt RN50.
The smallest Type MK - rated at .50 watt - provides power
dissipation equal to the RN70 resistor. The RN70 resistor requires a
mounting hole spacing of 1 inch and a side-to-side spacing of .25
inch, resulting in a total mounting area of .25 square inch - 10 times
the area required for a .50 Watt Type MK resistor!
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: [phone]
Fax: [phone]
© 2004 Caddock Electronics, Inc.
CADDOCK
e-mail: [e-mail] • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: [phone]
Fax: [phone]
28_IL100.1004