Cross Reference Guide

Cross Reference Guide
www.vishay.com
Vishay Dale
Selection Guide for Conversion of
Carbon Composition Resistors
Vishay Dale believes that the information described in this publication is accurate and reliable, and much care has been taken
in its preparation. However, no responsibility, financial or otherwise, is accepted for any consequences arising out of the use of
this information.
This information is subject to change without notice.
Revision: 24-Apr-14
Document Number: 31049
1
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Cross Reference Guide
www.vishay.com
Vishay Dale
The following cross reference guide is intended to assist in finding Vishay Dale film or wirewound resistor types that are most
similar to a particular Allen-Bradley carbon composition type. Direct interchangeability is not implied due to differences in
technology; however, electrical characteristics typically will be met or exceeded.
CROSS-REFERENCE FOR COMMERCIAL MODELS
CHARACTERISTICS
BY WATTAGE
ALLEN BRADLEY
(CARBON COMP)
GENERAL
APPLICATIONS
SNUBBER
EXTENDED RANGE
RNX-1/4
1/8 Watt
Model
BB ± 5 %
CMF-50
RS-1/4
Body Length
0.145"
0.150"
0.250"
0.290"
Body Diameter
0.062"
0.065"
0.085"
0.140"
Lead Diameter
0.015"
0.016"
0.020"
0.025"
2.7 to 100M
10 to 22M
0.1 to 3.4K
1K to 100M
150 V
200 V
Resistance Range ()
Maximum Operating Voltage
750 V
1/4 Watt
Model
CB ± 5 %
CMF-55
RS-1/4
Body Length
0.250"
0.240"
0.250"
0.290"
Body Diameter
0.090"
0.090"
0.085"
0.140"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
RNX-1/4
0.025"
0.025"
0.020"
0.025"
2.7 to 100M
1 to 50M
0.1 to 3.4K
1K to 100M
250 V
250 V
750 V
1/2 Watt
EB ± 5 %
CMF-20
RS-1/2
Body Length
Model
0.375"
0.375"
0.312"
0.420"
Body Diameter
0.140"
0.145"
0.085"
0.140"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
RNX-3/8
0.033"
0.032"
0.020"
0.025"
1 to 100M
1 to 10M
0.1 to 4.9K
1K to 1G
350 V
500 V
1.5 kV
1 Watt
Model
GB ± 5 %
CMF-65
CMF-65-146
RS-2B
Body Length
0.562"
0.562"
0.562"
0.560"
0.790"
Body Diameter
0.225"
0.180"
0.215"
0.187"
0.140"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
RNX-3/4
0.041"
0.025"
0.025"
0.032"
0.025"
1 to 100M
1 to 22M
1 to 15M
0.1 to 24.5K
1K to 1G
500 V
500 V
500 V
3 kV
2 Watt
HB ± 5 %
CMF-70
CMF-70-146
RS-2C
Body Length
Model
0.688"
0.562"
0.562"
0.500"
0.800"
Body Diameter
0.312"
0.180"
0.230"
0.218"
0.310"
Lead Diameter
ROX-3/4
0.045"
0.032"
0.032"
0.040"
0.032"
Resistance Range ()
10 to 100M
1 to 22M
1 to 15M
0.1 to 32.3K
1K to 1G
Maximum Operating Voltage
500 V/750 V
500 V
500 V
Revision: 24-Apr-14
5 kV
Document Number: 31049
2
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Cross Reference Guide
www.vishay.com
Vishay Dale
The following cross reference guide is intended to assist in finding Vishay Dale film resistor types that are most similar to a
particular Allen-Bradley carbon composition type. Direct interchangeability is not implied due to differences in technology;
however, electrical characteristics typically will be met or exceeded.
Military types are also listed for reference: MIL-R-11 (RC), MIL-PRF-22684 (RL) and MIL-R-10509 (RN)
CROSS-REFERENCE FOR BASIC MILITARY MODELS
CHARACTERISTICS
BY WATTAGE
ALLEN BRADLEY
(CARBON COMP)
SUGGESTED VISHAY DALE MODELS
(FILM RESISTOR TYPES)
1/8 Watt
Model
RC05 ± 5 %
RN50
Body Length
0.145"
0.150"
Body Diameter
0.062"
0.065"
Lead Diameter
0.015"
0.016"
2.7 to 100M
10 to 22M
150 V
200 V
RC07 ± 5 %
RN55
Resistance Range ()
Maximum Operating Voltage
1/4 Watt
Model
RL07
Body Length
0.250"
0.240"
0.240"
Body Diameter
0.090"
0.090"
0.090"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
0.025"
0.025"
0.025"
2.7 to 100M
1 to 50M
1 to 5M
250 V
200 V
250 V
1/2 Watt
Model
RC20 ± 5 %
RN60
RL20
Body Length
0.375"
0.344"
0.375"
Body Diameter
0.140"
0.145"
0.145"
Lead Diameter
0.033"
0.025"
0.032"
1 to 100M
1 to 10M
1 to 10M
350 V
300 V
350 V
Resistance Range ()
Maximum Operating Voltage
1 Watt
Model
RC32 ± 5 %
RN70
Body Length
0.562"
0.562"
Body Diameter
0.225"
0.180"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
0.041"
0.032"
1 to 100M
1 to 22M
500 V
500 V
2 Watt
Model
RC42 ± 5 %
Body Length
0.688"
Body Diameter
0.312"
Lead Diameter
0.045"
Resistance Range ()
10 to 100M
Maximum Operating Voltage
500 V/750 V
Revision: 24-Apr-14
(SEE COMMERCIAL OFFERINGS)
Document Number: 31049
3
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Cross Reference Guide
www.vishay.com
Vishay Dale
The following cross reference guide is intended to assist in finding Vishay Dale film or wirewound resistor types that are most
similar to a particular Allen-Bradley carbon composition type. Direct interchangeability is not implied due to differences in
technology; however, electrical characteristics typically will be met or exceeded.
Military types are also listed for reference: MIL-R-39008 (RCR), MIL-PRF-39017 (RLR) and MIL-PRF-39007 (RWR)
CROSS-REFERENCE FOR ESTABLISHED RELIABILITY MODELS
CHARACTERISTICS
BY WATTAGE
ALLEN BRADLEY
(CARBON COMP)
GENERAL
APPLICATIONS
SNUBBER
RWR81S
1/8 Watt
Model
RCR05 ± 5 %
RLR05
Body Length
0.145"
0.150"
0.250"
Body Diameter
0.062"
0.066"
0.085"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
0.015"
0.016"
0.020"
2.7 to 100M
4.7 to 1M
(DSCC drawing 98020: 1.1M to 22M)
0.1 to 1K
150 V
200 V
1/4 Watt
Model
RCR07 ± 5 %
RLR07
Body Length
0.250"
0.250"
0.250"
Body Diameter
0.090"
0.090"
0.085"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
RWR81S
0.025"
0.025"
0.020"
2.7 to 100M
1 to 10M
(DSCC drawing 99011: 11M to 22M)
0.1 to 1K
250 V
250 V
1/2 Watt
Model
RCR20 ± 5 %
RLR20
Body Length
0.375"
0.375"
0.312"
Body Diameter
0.140"
0.138"
0.085"
Lead Diameter
Resistance Range ()
Maximum Operating Voltage
RWR82S
0.033"
0.032"
0.020"
1 to 100M
4.3 to 3.01M
(DSCC drawing 98021: 3.3M to 22M)
0.1 to 1.3K
350 V
350 V
1 Watt
Model
RCR32 ± 5 %
RLR32
Body Length
0.562"
0.562"
0.560"
Body Diameter
0.225"
0.190"
0.187"
Lead Diameter
RWR89S
0.041"
0.032"
0.032"
1 to 100M
1 to 2.7M
(DSCC drawing 98022: 3M to 22M)
0.1 to 4.12K
500 V
500 V
RCR42 ± 5 %
(non-E-EREL part)
DSCC drawing 97004
RWR89S
Body Length
0.688"
0.562"
0.560"
Body Diameter
0.312"
0.230"
0.187"
Lead Diameter
0.045"
0.032"
0.032"
Resistance Range ()
10 to 100M
10 to 22M
0.1 to 4.12K
Maximum Operating Voltage
500 V/750 V
500 V
Resistance Range ()
Maximum Operating Voltage
2 Watt
Model
Revision: 24-Apr-14
Document Number: 31049
4
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Cross Reference Guide
www.vishay.com
Vishay Dale
COMPARISON OF RLR AND RCR SPECIFICATIONS
GENERAL CHARACTERISTICS
MODEL
RLR
RCR
MIL-PRF-39017
MIL-R-39008
Type Element
Film element on insulating form
Carbon composition (hot molded solid core or
material applied as a thin coating on insulation form)
Available Tolerances
± 1 % in 96 values per decade
± 2 % in 24 values per decade
± 5 % and ± 10 % in 24 values per decade
100 % rated power for 10 000 h
permissible change in resistance ± 4 %
50 % rated power for 10 000 h permissible change
in resistance ± 15 %
MIL SPECIFICATION
Mil-Spec Test Criteria for Failure Rate
Determination (+70 °C)
± 100 ppm/°C (350 ppm/°C, above 10M)
Equivalent to:
Resistance Temperature Characteristics
(Maximum TCR)
-55 °C
± 105 °C
1K and under
± 6.5 %
±5%
1.1K to 10K
± 10 %
±6%
-55 °C
± 150 °C
11K to 100K
± 13 %
± 7.5 %
Below 10M =
± 0.8 %
± 1.25 %
110K to 1M
± 15 %
± 10 %
Above 10M =
± 2.8 %
± 4.375 %
1.1M to 10M
± 20 %
± 15 %
11M and above
± 25 %
± 15 %
ENVIRONMENTAL TEST (STABILITY)
MODEL
RLR
RCR
MIL-PRF-39017
MIL-R-39008
2000 h at 100 % rated power: ± 2 %
1000 h at 100 % rated power: ± 6 % average or
± 10 % for individual resistor
1000 h at 50 % rated power: ± 8 %
± 0.5 %
(Test not required)
MIL SPECIFICATION
Life (+70 %)
Power Conditioning (100 % Test)
Thermal Shock
± 0.25 %
±4%
Dielectric Strength
± 0.25 %
No R required
High Temperature Exposure
(+150 °C for 2000 h)
±2%
(Test not required)
Low Temperature Operation
± 0.25 %
±3%
±1%
± 10 % average or
± 15 % for individual resistor
Short Time Overload
± 0.5 %
± 2.5 %
Terminal Strength
± 0.25 %
±1%
Resistance to Solder Heat
± 0.25 %
±3%
Shock and vibration
± 0.5 %
±2%
Moisture Resistance
ADVANTAGES AND DISADVANTAGES
STYLE: CARBON COMPOSITION
STYLE: METAL FILM
Advantages
Disadvantages
Advantages
Disadvantages
• Wide resistance range
• Highest TCR
• Better stability at full power
• Good stability at 1/2 rate power
• Poor moisture resistance
• Limited resistance range
(in some styles)
• Good pulse handling capability
• Poor shelf life (15 %)
• Better operating temperature
(150 °C to 175 °C)
• Good frequency characteristics
• High noise level
• Excellent shelf life (0.1 %)
• High voltage coefficient
(0.02 % to ± 0.5 %)
• Good frequency characteristics
• Becoming obsolete
• Good voltage coefficient
(0.001 %/V)
• Very high A.S.P.
• Best TC of R
• Off the shelf availability
Note
• Each board application has unique design parameters. You may wish to request samples, to insure compatibility with your specific
application, for prototype or qualification builds.
Revision: 24-Apr-14
Document Number: 31049
5
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Cross Reference Guide
www.vishay.com
Vishay Dale
VISHAY DALE NICHROME FILM RESISTORS IN PULSED POWER APPLICATIONS
The various military specifications which provide the
framework for the construction and testing of established
reliability film resistors supply detailed requirements for the
performance of these components in a wide range of
operating environments. They do not, however, provide
much guidance in the area of pulsed power applications. It
has become very evident from the numerous questions we
receive that film resistors are subjected to a wide variety of
electrical pulses which are of short duration and relatively
high amplitude. To answer these questions, the Vishay Dale
Resistor Division has performed extensive testing to
develop guidelines for the use of ERL and ERC resistors in
short duration current pulse applications. The ERL and ERC
product lines are a Vishay Dale equivalent to the RLR and
RNC styles respectively.
All recommendations presented here shall apply to only the
Vishay Dale ERC and ERL styles and are not applicable to
any other RLR and RNC products. Numerous factors
influence the response of any single resistor to a given
pulsed overload so these guidelines are based on the most
conservative analysis of test results from thousands of
individual units.
Single Square Pulse: The following graphs depict the
maximum recommended instantaneous power amplitudes
for Vishay Dale RLR05, RNC50, RLR07 and RNC55
products for a single square wave form pulse. Each graph
provides the maximum power a resistor will withstand
without any resistance change, and a maximum power
when allowing a 0.2 % resistance change for the single
applied pulse.
MAXIMUM PULSE AMPLITUDE
RNC55 and RLR07
120
500
100
400
POWER (W)
POWER (W)
RNC50 and RLR05
80
60
200
100
40
20
0.01
300
0
0.1
PULSE DURATION (ms)
0.01
1
45
0.1
PULSE DURATION (ms)
1
0.01
PULSE DURATION (s)
0.1
80
POWER (W)
POWER (W)
40
35
30
25
20
60
40
20
15
10
0.001
0.01
PULSE DURATION (s)
No resistance change
0.2 % resistance change
Revision: 24-Apr-14
0.1
0
0.001
No resistance change
0.2 % resistance change
Document Number: 31049
6
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Cross Reference Guide
www.vishay.com
Vishay Dale
VISHAY DALE NICHROME FILM RESISTORS IN PULSED POWER APPLICATIONS
Repetitive Pulses: Any change induced by a single
overload pulse can be expected to have similar cumulative
effects with successive pulses. For this reason, Vishay Dale
recommends that any application with repetitive pulses limit
the pulse power to a value which results in no resistance
change. Additionally, it is necessary to verify that the
average power during any five second period of operation
does not exceed the power rating of the component.
Capacitor Discharge: In the case where the pulse exhibits
an exponential decay typical of the discharge of a capacitor,
the suitability of a resistor can be determined by calculating
an equivalent square wave pulse. For determining a
resistor’s tolerance to a short duration exponentially
decaying power overload, a square wave with an amplitude
equal to the initial voltage of that pulse and with a duration
equal to one-half of the time constant of the decaying pulse
will be of equivalent energy and may be substituted. The
time constant is the time required for the voltage across the
capacitor to have decreased to 36.8 % of its value at the
moment the discharge began. Because the power is
proportional to the square of the voltage, the power will have
decayed to 13.5 % of its original value in the same time. The
graph at the right depicts the power output of a discharging
capacitor and an equivalent square pulse.
The time constant of a capacitive discharge can be
calculated by multiplying the capacitance in Farads by the
resistive load in Ohms through which to capacitor is
discharged.
One half of this value will provide the proper duration for the
equivalent pulse.
Equivalent pulse duration = 0.5
Resistive ()
Capacitance (F)
Maximum Voltage Constraints: In addition to the previous
limitations which are imposed by the properties of the
resistive film, the characteristics of the dielectric materials
insulating the resistive elements must also be recognized.
For all four Vishay Dale styles mentioned above, the
potential across the component cannot exceed 3000 V
without the risk of a dielectric failure in the insulating
coating.
Additional Information: While the recommendations presented here are very broad, it is likely that there are applications which
do not fit the ones we have provided. If you need additional information or have any questions on this subject, please use the
email contact on the bottom of this datasheet.
Revision: 24-Apr-14
Document Number: 31049
7
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000