Document Number: 30232 For technical questions, contact: ww2aresistors@vishay.com www.vishay.com
Revision: 02-Aug-07 1
Fast Acting, Molded Styles, Custom Designed For Your Application
RS Style Wirewound Fuse Resistor
Vishay Dale
FEATURES
• Low temperature coefficient (down to 30 ppm/°C)
• High temperature silicone molded package
(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
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.
Available
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.
GLOBAL
MODEL HISTORICAL
MODEL
FUSING PARAMETERS RESISTANCE
RANGE
± 5 %, ± 10 %
AVAILABLE
1.0 W CONTINUOUS POWER (1)
FUSING
CURRENT
A
TYPICAL
FUSING TIME
ms
CONTINUOUS
CURRENT
A
CROSSOVER
VALUE
RS01A...209 RS-1A-209 0.5 4 49 - 500 0.10 100.0
RS01A...118 RS-1A-118 1.0 9 6.8 - 185 0.25 16.0
RS01A...212 RS-1A-212 1.25 8 4.7 - 107 0.30 11.11
RS01A...213 RS-1A-213 1.5 15 3.5 - 68 0.35 8.16
RS01A...143 RS-1A-143 2.0 15 2.2 - 35 0.40 6.25
RS01A...214 RS-1A-214 2.5 23 1.7 - 23 0.45 4.94
RS01A...162 RS-1A-162 3.0 48 1.1 - 12 0.55 3.31
RS01A...208 RS-1A-208 4.0 47 0.72 - 6.44 0.75 1.78
RS01A...207 RS-1A-207 6.0 70 0.35 - 2.17 1.0 1.0
RS01A...215 RS-1A-215 8.0 48 0.29 - 1.61 1.25 0.64
RS01A...173 RS-1A-173 10.0 50 0.23 - 1.16 1.50 0.44
RS01A...216 RS-1A-216 15.0 35 0.19 - 0.82 1.75 0.33
RS01A...217 RS-1A-217 20.0 46 0.12 - 0.42 2.0 0.25
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: RS01A402R0JS70209 (preferred part number format)
GLOBAL MODEL VALUE TOLERANCE PACKAGING SPECIAL
(See Typical Electrical
Specifications Global
Model column for
options)
R = Decimal
K = Thousand
15R00 = 15
10K00 = 10 k
J = ± 5.0 %
K = ± 10.0 % E70 = Lead (Pb)-free, tape/reel
E12 = Lead (Pb)-free, bulk (Dash Number)
(up to 3 digits)
From 1 - 999
as applicable
S70 = Tin/lead, tape/reel
B12 = Tin/lead, bulk
Historical Part Number Example: RS-1A-209 402 5 % S70 (will continue to be accepted)
RS-1A-209 402 5 % S70
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE 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.
S01A402R0 JS7 0R 2 0 9
www.vishay.com For technical questions, contact: ww2aresistors@vishay.com Document Number: 30232
2Revision: 02-Aug-07
RS Style Wirewound Fuse Resistor
Vishay Dale Fast Acting, Molded Styles, Custom
Designed For Your Application
DIMENSIONS in inches [millimeters]
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
1.25 [31.75]
minimum
0.020 ± 0.002
[0.508 ± 0.051]
A
B
MODEL A B
1.0 W 0.422 ± 0.015 [10.72 ± 0.381] 0.110 ± 0.015 [2.79 ± 0.381]
TECHNICAL SPECIFICATIONS
PARAMETER UNIT TYPICAL WIREWOUND FUSE RESISTOR CHARACTERISTICS
Resistance Tolerance ± % 3, 5, 10
Temperature Coefficient ppm/°C 90 for 0.1 thru 0.99 ; 50 for 1.0 thru 9.9 ; 30 for 10 and above
Power Rating W 1.0 standard, higher power ratings available
Dielectric Strength VAC 500
Insulation Resistance M1000 minimum dry
Fusing Times s 0.001 to 1.0
Minimum Fusing Current A Approximately 4 times the continuous operating current
obtainable on some designs. Larger ratios produce better designs.
Terminal Strength lb 5 minimum
Solderability - Terminals are 60/40 electro tin plated to facilitate soldering
AMBIENT TEMPERATURE °C
0 50 75 100 125 150 175 200
120
100
80
60
40
20
0
RATED POWER IN %
Derating
25
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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Vishay
All product specifications and data are subject to change without notice.
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(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
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information provided herein to the maximum extent permitted by law. The product specifications do not expand or
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therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
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The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
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