RS Style Wirewound Fuse Resistor
Vishay Dale
Fast Acting, Molded Styles, Custom Designed For Your Application
FEATURES
• Low temperature coefficient (down to 30 ppm/°C)
• High temperature silicone molded package
Available
(derated to 200 °C)
• Performs function of resistor and series fuse and provides
predictable fusing times
• Complete welded construction
• No flaming or distortion of unit under fusing conditions
• Ideal for Squib circuit applications and protection of
semi-conductor devices
• Negligible noise and voltage coefficient
TYPICAL ELECTRICAL SPECIFICATIONS
The following are offered as examples of reliable designs. Hundreds of possible combinations are available for meeting your requirements.
Contact factory by using email address in the footer of this page, for assistance. Higher wattages available.
FUSING PARAMETERS
GLOBAL
MODEL
HISTORICAL
MODEL
FUSING
CURRENT
A
0.5
1.0
1.25
1.5
2.0
2.5
3.0
4.0
6.0
8.0
10.0
15.0
20.0
TYPICAL
FUSING TIME
ms
4
9
8
15
15
23
48
47
70
48
50
35
46
RESISTANCE
RANGE
± 5 %, ± 10 %
AVAILABLE
1.0 W CONTINUOUS POWER
(1)
CONTINUOUS
CURRENT
A
0.10
0.25
0.30
0.35
0.40
0.45
0.55
0.75
1.0
1.25
1.50
1.75
2.0
CROSSOVER
VALUE
100.0
16.0
11.11
8.16
6.25
4.94
3.31
1.78
1.0
0.64
0.44
0.33
0.25
RS01A...209
RS-1A-209
49 - 500
RS01A...118
RS-1A-118
6.8 - 185
RS01A...212
RS-1A-212
4.7 - 107
RS01A...213
RS-1A-213
3.5 - 68
RS01A...143
RS-1A-143
2.2 - 35
RS01A...214
RS-1A-214
1.7 - 23
RS01A...162
RS-1A-162
1.1 - 12
RS01A...208
RS-1A-208
0.72 - 6.44
RS01A...207
RS-1A-207
0.35 - 2.17
RS01A...215
RS-1A-215
0.29 - 1.61
RS01A...173
RS-1A-173
0.23 - 1.16
RS01A...216
RS-1A-216
0.19 - 0.82
RS01A...217
RS-1A-217
0.12 - 0.42
Note
(1)
The Continuous Current Rating applies only to values equal to or less than the Crossover Value. The Continuous Power Rating applies only
to values equal to or higher than the Crossover Value.
• Be aware that the inherent compromise involved between resistive and fusing functions sometimes makes certain exact combinations
unattainable. However, in nearly all cases, this does not prevent the production of a functional, reliable fuse resistor thoroughly capable of
meeting application requirements.
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: RS01A402R0JS70209 (preferred part number format)
R
S
0
1
A
VALUE
4
0
2
R
0
J
S
7
0
2
0
9
GLOBAL MODEL
(See Typical Electrical
Specifications Global
Model column for
options)
TOLERANCE
J
= ± 5.0 %
K
= ± 10.0 %
PACKAGING
E70
= Lead (Pb)-free, tape/reel
E12
= Lead (Pb)-free, bulk
S70
= Tin/lead, tape/reel
B12
= Tin/lead, bulk
5%
TOLERANCE CODE
SPECIAL
(Dash Number)
(up to 3 digits)
From
1 - 999
as applicable
R
= Decimal
K
= Thousand
15R00
= 15
10K00
= 10 k
Historical Part Number Example: RS-1A-209 402
5 % S70 (will continue to be accepted)
RS-1A-209
HISTORICAL MODEL
402
RESISTANCE VALUE
S70
PACKAGING
If a MODEL listed in TYPICAL ELECTRICAL SPECIFICATIONS table does not meet your requirements, then please include the following
information. It will enable us to choose the best design for your application.
1. Operating wattage or current, ambient temperature and required resistance stability. (%
R/1000
h)
2. Fusing wattage or current and maximum “blow” time. Also, minimum “blow” time, if applicable.
3. Nominal resistance and maximum allowable resistance tolerance, (5 % to 10 % preferred).
4. Maximum allowable physical size.
5. Voltage to be interrupted.
6. Frequency of power source, wave form and a brief description of your application.
Document Number: 30232
Revision: 02-Aug-07
For technical questions, contact:
ww2aresistors@vishay.com
www.vishay.com
1
RS Style Wirewound Fuse Resistor
Vishay Dale
Fast Acting, Molded Styles, Custom
Designed For Your Application
DIMENSIONS
in inches [millimeters]
A
1.25 [31.75]
minimum
B
0.020 ± 0.002
[0.508 ± 0.051]
MODEL
1.0 W
A
0.422 ± 0.015 [10.72 ± 0.381]
B
0.110 ± 0.015 [2.79 ± 0.381]
TECHNICAL SPECIFICATIONS
PARAMETER
Resistance Tolerance
Temperature Coefficient
Power Rating
Dielectric Strength
Insulation Resistance
Fusing Times
Minimum Fusing Current
Terminal Strength
Solderability
UNIT
±%
ppm/°C
W
V
AC
M
s
A
lb
-
TYPICAL WIREWOUND FUSE RESISTOR CHARACTERISTICS
3, 5, 10
90 for 0.1
thru 0.99
;
50 for 1.0
thru 9.9
;
30 for 10
and above
1.0 standard, higher power ratings available
500
1000 minimum dry
0.001 to 1.0
Approximately 4 times the continuous operating current
obtainable on some designs. Larger ratios produce better designs.
5 minimum
Terminals are 60/40 electro tin plated to facilitate soldering
MATERIAL SPECIFICATIONS
Element:
Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core:
Alumina ceramic
Encapsulant:
Thermoset silicone mold compound
End Caps:
Stainless steel
Terminals:
Tinned copperweld
Part Marking:
DALE, model, value, tolerance, date code
RATED POWER IN %
120
100
80
60
40
20
0
0
25
50
75
100
125
150
175
200
AMBIENT TEMPERATURE °C
Derating
www.vishay.com
2
For technical questions, contact:
ww2aresistors@vishay.com
Document Number: 30232
Revision: 02-Aug-07
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
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 herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
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.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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