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Suite 108
Minnetonka, MN 55345
www.chtechnology.com
Phone (952) 933-6190
Fax (952) 933-6223
1-800-274-4284
Thank you for downloading this document from C&H Technology, Inc.
Please contact the C&H Technology team for the following questions -
Technical
Application
Assembly
Availability
Pricing
Phone – 1-800-274-4284
E-Mail – sales@chtechnology.com
www.chtechnology.com - SPECIALISTS IN POWER ELECTRONIC COMPONENTS AND ASSEMBLIES - www.chtechnology.com
RD Series Fixed
www.vishay.com
Vishay Milwaukee
Fixed Roundwire Resistor
FEATURES
• Resistance wire is spotwelded to the terminal
bands and then “locked” onto the core with a
vitreous enamel or silicone coating
• Hardware can be supplied mounted, as loose
assemblies, or as individual parts. Enclosures
can also be produced
• Available as fixed and adjustable resistors (for adjustable
Roundwire Resistors see www.vishay.com/doc?31830
•Wirewound
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL MODEL HISTORICAL MODEL
RDEF0008
RDEF0012
RDEF0015
RDEF0020
RDEF0025
RDEF0030
RDEF0045
RDEF0050
RDEF0051
RDEF0061
RDEF0065
RDEF0075
RDEF0076
RDEF0080
RDEF0090
RDEF0095
RDEF0100
RDEF0120
RDEF0130
RDEF0160
RDEF0175
RDEF0220
RDEF0225
RDEF0235
RDEF0240
RDEF0275
RDEF0300
RDEF0500
RDEF0750
RDEF1000
RDEF1150
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(2)
(2)
5-16- 8 0.82 to 13.5K 5
5-28- 12 0.12 to 49K 5
7-24- 15 0.16 to 28.7K 5
7-32- 20 0.13 to 53.2K 5
9-32- 25 0.22 to 35K 5
12-32- 30 0.28 to 29K 5
12-48- 45 0.18 to 63K 5
9-64- 50 0.21 to 119K 5
12-56- 51 0.22 to 83K 5
12-64- 61 0.27 to 97K 5
12-72- 65 0.31 to 122K 5
9-96- 75 0.33 to 207K 5
12-80- 76 0.35 to 134K 5
18-64- 80 0.06 to 53K 5
12-96- 90 0.43 to 172K 5
18-80- 95 0.08 to 79K 5
12-104v 100 0.47 to 186K 5
18-96- 120 0.11 to 100K 5
18-104- 130 0.12 to 111K 5
18-128- 160 0.15 to 144K 5
18-136- 175 0.16 to 156K 5
26-136- 220 0.21 to 69K 5
18-168- 225 0.21 to 200K 5
18-180- 235 0.22 to 216K 5
18-188- 240 0.24 to 227K 5
26-168- 275 0.27 to 90K 5
26-188- 300 0.31 to 104K 5
40-192-S 500 0.49 to 34K 5
40-240-S 750 0.63 to 44K 5
40-320-S 1000 0.89 to 62K 5
52-320-S 1150 1.14 to 41K 5
POWER RATING
W
Notes
• Ratings are based on a temperature rise of 375 °C above an ambient of 40 °C.
• Operating temperature range - 55 °C to 415 °C.
(1)
RDEF0008 to RDEF0300 vitreous enamel coating is standard, silicone coating is available.
(2)
RDSF0500 to RDSF1150 silicone coating is standard.
(3)
Standard fixed resistance tolerance ± 5 %. Resistance values less than 1 and adjustable have ± 10 % tolerance. Closer tolerances
available upon request.
Revision: 10-Jan-13
1
For technical questions, contact: vishaymilwaukeeresistor@vishay.com
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
RESISTANCE RANGE
TOLERANCE
%
Document Number: 31829
)
(3)
A
B
D C
D
Type H
B
A
C
B
D
C
A
Type A, D, F, G
RD Series Fixed
www.vishay.com
DIMENSIONS in inches (millimeters)
• For Terminal Data and Mounting Hardware, see www.vishay.com/doc?31811
• For Enclosures and Frames, see www.vishay.com/doc?31810
CORE DIMENSIONS (REF.)
GLOBAL
MODEL
RDEF0008 0.313 (7.95) 0.188 (4.775) 1 (25.4) 0.63 (15.875) A
RDEF0012 0.313 (7.95) 0.188 (4.775) 1.75 (44.45) 1.38 (34.925) A
RDEF0015 0.438 (11.125) 0.313 (7.95) 1.5 (38.1) 1.06 (26.9875) A
RDEF0020 0.438 (11.125) 0.313 (7.95) 2 (50.8) 1.56 (39.6875) A
RDEF0025 0.563 (14.3) 0.313 (7.95) 2 (50.8) 1.50 (38.1) D
RDEF0030 0.75 (19.05) 0.5 (12.7) 2 (50.8) 1.50 (38.1) D
RDEF0045 0.75 (19.05) 0.5 (12.7) 3 (76.2) 2.50 (63.5) D
RDEF0050 0.563 (14.3) 0.313 (7.95) 4 (101.6) 3.50 (88.9) D
RDEF0051 0.75 (19.05) 0.5 (12.7) 3.5 (88.9) 3.00 (76.2) D
RDEF0061 0.75 (19.05) 0.5 (12.7) 4 (101.6) 3.50 (88.9) D
RDEF0065 0.75 (19.05) 0.5 (12.7) 4.5 (114.3) 4.00 (101.6) D
RDEF0075 0.563 (14.3) 0.313 (7.95) 6 (152.4) 5.50 (139.7) D
RDEF0076 0.75 (19.05) 0.5 (12.7) 5 (127) 4.50 (114.3) D
RDEF0080 1.125 (28.575) 0.75 (19.05) 4 (101.6) 3.13 (79.375) F
RDEF0090 0.75 (19.05) 0.5 (12.7) 6 (152.4) 5.50 (139.7) D
RDEF0095 1.125 (28.575) 0.75 (19.05) 5 (127) 4.13 (104.775) F
RDEF0100 0.75 (19.05) 0.5 (12.7) 6.5 (165.1) 6.00 (152.4) D
RDEF0120 1.125 (28.575) 0.75 (19.05) 6 (152.4) 5.13 (130.175) F
RDEF0130 1.125 (28.575) 0.75 (19.05) 6.5 (165.1) 5.63 (142.875) F
RDEF0160 1.125 (28.575) 0.75 (19.05) 8 (203.2) 7.13 (193.675) F
RDEF0175 1.125 (28.575) 0.75 (19.05) 8.5 (215.9) 7.63 (177.8) F
RDEF0220 1.625 (41.275) 1.125 (28.575) 8.5 (215.9) 7.00 (177.8) G
RDEF0225 1.125 (28.575) 0.75 (19.05) 10.5 (266.7) 9.63 (244.475) F
RDEF0235 1.125 (28.575) 0.75 (19.05) 11.25 (285.75) 10.38 (263.525) F
RDEF0240 1.125 (28.575) 0.75 (19.05) 11.75 (298.45) 10.88 (276.225) F
RDEF0275 1.625 (41.275) 1.125 (28.575) 10.5 (266.7) 9.00 (228.6) G
RDEF0300 1.625 (41.275) 1.125 (28.575) 11.75 (298.45) 10.25 (260.35) G
RDEF0500 2 (50.8) 1.75 (44.45) 12 (304.8) 10.50 (266.7) G
RDEF0750 2.5 (63.5) 1.75 (44.45) 15 (381) 13.50 (342.9) G
RDEF1000 2.5 (63.5) 1.75 (44.45) 20 (508) 18.50 (469.9) G
RDEF1150 3.25 (82.55) 1.75 (44.45) 20 (508) 18.50 (469.9) G
B
LENGTH
OUTER DIAMETERDINNER DIAMETER
C
DISTANCE
BETWEEN
TERMINAL (REF.)
Vishay Milwaukee
A
TERMINAL
STYLE
TERMINAL STYLE in inches (millimeters)
DIMENSIONS A (3/16" LUG) D (1/4" LUG) F (3/8" LUG) G (1/2" LUG) H (1/4" SQC)
Width (A) 0.1875 (4.7625) 0.25 (6.35) 0.375 (9.525) 0.5 (12.7) 0.25 (6.35)
Height (B) 0.375 (9.525) 0.5 (12.7) 0.625 (15.875) 0.9375 (23.8125) 0.625 (15.875)
Dia. (C) 0.13 (3.302) 0.17 (4.318) 0.2 (5.08) 0.26 (6.604) 0.065 (1.651)
Thickness (D) 0.02 (0.508) 0.02 (0.508) 0.035 (0.889) 0.046 (1.1684) 0.032 (0.8128)
Revision: 10-Jan-13
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
For technical questions, contact: vishaymilwaukeeresistor@vishay.com
2
Document Number: 31829
RD Series Fixed
www.vishay.com
MATERIAL SPECIFICATIONS
Element Copper-nickel, nickel-chrome, iron-chrome-aluminum
Core Cordierite, steatite
Coating Special high temperature silicone or vitreous enamel
Standard terminals Nickel-iron
Part marking Value, date code, MRC
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: RDEF00201K000JABVT (RDEF0020-VT 1K 5 % 3/16L B)
RDEF00201K000JABVT
Vishay Milwaukee
MODEL
(2 digits)
RD E
COATING
(1 digit)
=
Enamel
S
=
Silicone
TYPE
(1 digit)
F = Fixed
SIZE
(4 digits)
0300
=
300 W
1150
=
1150 W
Available
sizes:
0008
0011
0015
0020
0024
0025
0026
0030
0035
0040
0045
0050
0051
0052
0061
0065
0070
0075
0076
0078
0080
0085
0090
0094
0095
0100
0120
0130
0160
0175
0220
0225
0235
0240
0250
0251
0275
0300
0500
0750
1000
1150
VALUE
(5 digits)
R
= Decimal
K
= Thousand
R1500
= 0.15
1K500
= 1.5 k
Check
datasheet for
available value
range
TOLERANCE
(1 digit)
D
= ± 0.5 %
F
= ± 1.0 %
G
= ± 2.0 %
H
= ± 3.0 %
J
= ± 5.0 %
K
= ± 10 %
M
= ± 20 %
TERMINAL
(1 digit)
A
= 3/16" lug
D
= 1/4" lug
E
= 5/16" lug
F
= 3/8" lug
G
= 1/2" lug
H
= 1/4" single
quick-connect
J
= 1/4" double
quick-connect
K
= 1/4" lug with steel
hardware (ES-707F)
L
= 5/16" lug with steel
hardware (ES-707F)
M
= 3/8" lug with steel
hardware (ES-707F)
N
= 3/8" lug with brass
hardware (ES-707b)
O
= 1/2" lug with steel
hardware (ES-707F)
P
= 1/2" lug with brass
hardware (ES-707b)
Q
= 1/4" lug with steel
hardware (ES-708F)
R
= 5/16" lug with steel
hardware (ES-708F)
S
= 3/8" lug with steel
hardware (ES-708F)
T
= 3/8" lug with brass
hardware (ES-708b)
U
= 1/2" lug with steel
hardware (ES-708F)
V
= 1/2" lug with brass
hardware (ES-708b)
W
= Ferrule
PACKAGING
(1 digit)
B
= Bulk
See
packaging
codes for
additional
options
SPECIAL
(2 digits)
00 = Standard
01 = Standard with
customer part no. stamp
NI = Non-inductive
N1 = Non-inductive 1A
N2 = Non-inductive clips
CT = Center tap
SW = Surge winding
LT = Low temperature
coefficent alloy
EC = End caps
CP = Push in clips (bulk)
CA = Push in clips
(assembled)
VT = Vertical mount
VS = VT with customer
part no. stamp
ES = End slot side slot
bracket
1A = 1 high bracket zinc
plated steel
1S = 1A with customer
part no. stamp
1B = 1 high bracket
stainless steel (300 W only)
1C = Live bracket
2A = 2 high bracket zinc
plated steel
2B = 2 high bracket
stainless steel (300 W only)
3A = 3 high bracket zinc
plated steel
3B = 3 high bracket
stainless steel (300 W only)
4A = 4 high bracket zinc
plated steel
4B = 4 high bracket
stainless steel (300 W only)
Note
2A, 2B, 3A, 3B, 4A, and 4B
assemblies:
include identical resistors
only wiring to be supplied
by customer
reference CS series for further
customization
Note
3A, 3B, 4A, and 4B
limitations:
brackets fit 25 W to 300 W RD
resistors
Revision: 10-Jan-13
For technical questions, contact: vishaymilwaukeeresistor@vishay.com
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
3
Document Number: 31829
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please
contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
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