Ohmite HPW High precision welded axial and radial Datasheet

HPW Series
High Precision Welded Axial and Radial
Commercial Resistors Tested to Mil-PRF-39005
F e at u r e s
• Group A testing in
accordance with MILPRF-39005 specifications
available
• High precision
• All welded construction
• Molded thermosetting
plastic bobbin
• Wide ohmic range
combined with tight
tolerance
• Excellent long-term
stability
• Inherent low
temperature coefficient
• Extremely low Thermal
EMF
• Low voltage coefficient
• Low noise
S e r i e s S p e c i f i c at i o n s
Max.
Type
Ohms
118A
192k
102A
334k
101A
410k
153A
435k
103A
633k
105A
820k
184A
820k
185A*
961k
202A
968k
203A
1.7 M
205A*
1.93 M
207A*
3.0 M
308A
3.0 M
210A*
4.10 M
307A
5.63 M
310A
7.68 M
505A
10 M
510A*
24 M
515A*
35 M
517A
43 M
520A*
43 M
203PA
1.48 M
305PA
3.3 M
*Available in hermetically sealed
Power Rating
@125°C
(Watts)
0.05
0.10
0.10
0.10
0.10
0.125
0.125
0.125
0.25
0.25
0.33
0.50
0.60
0.50
0.60
1.00
1.00
1.25
1.50
1.75
2.00
0.25
0.50
Max.
Volts
150
150
300
150
300
300
200
200
400
800
800
800
800
800
1200
1200
1200
150
characteristics
Minimum Values 0.1Ω for ±1% and ±0.5%; 10Ω for ±0.1% and tighter
Resistance ±0.005%, ±0.01%, ± 0.02%, ±0.05%, ±0.1%, ±0.5%,
Tolerance and ±1%, depending on style and value
Temperature ±10ppm/°C standard for 10Ω and above. Higher TC’s
Coefficient (TCR on low ohmic values. TC match to ±1ppm/°C. High
TC’s upto +6000ppm/°C are available
Working tempera- –60°C to +150°C
ture range
All Welded The combination of all welded construction and comConstruction patible materials provide the most reliable means of
interconnects possible.
Butt Weld of Tab to A tab material of 800 ohm alloy (the same as the
Terminal resistance wire) is butt welded to the terminal and
molded deep into the resistor bobbin. This design
parameter assures the least possible DC transients
due to thermal EMF.
Bobbin Design The ratio of the height of the Pi wall to the width of
the Pi and to the diameter of the bobbin mandrel are
critical to the basic stability of a wirewound resistor.
These parameters are optimized for each wire size,
wattage size and range of resistor values.
Encapsulation Both the bobbin and the final encapsulation material
Material are thermosetting alkyd polyester. The resulting resistor is virtually a homogeneous mass with an identical
coefficient of expansion which is unaffected by the
most violent of temperature cycling. All types are
unaffected by application of solvents.
Terminal Materials The standard terminal material is hot solder dipped
copper (C5N).
Military Group A MIL-PRF-39005 testing
Burn In/Conditioning including Thermal Shock
DC Resistance
Visual/Mechanical Inspection
Short Time Overload
(continued)
126
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
HPW Series
High Precision Welded Axial and Radial
Commercial Resistors Tested to Mil-PRF-39005
dimensions
(±.020 in./ ±.508 mm)
Axial
1.25" / 31.75mm
min.
B
A
Round Radial
C
A
Power Rating
A
0.05
0.10
0.10
0.10
0.10
0.130 / 3.30
0.110 / 2.79
0.130 / 3.30
0.150 / 3.81
0.150 / 3.81
105A
184A
185A*
202A
203A
0.125
0.125
0.125
0.25
0.25
310A
505A
510A*
515A*
517A
1.00
1.00
1.25
1.50
1.75
205A*
207A*
308A
210A*
307A
B
Model
Type
118A
102A
101A
153A
103A
Dim. C
203PA 0.200 / 5.08
305PA 0.200 / 5.08
505PA 0.300 / 7.62
520A*
203PA
305PA
0.160
0.187
0.187
0.250
0.250
0.33
0.50
0.60
0.50
0.60
0.250
0.250
0.312
0.250
0.375
/
/
/
/
/
/
/
/
/
/
B
4.06
4.75
4.75
6.35
6.35
6.35
6.35
7.93
6.35
9.53
0.375 / 9.53
0.500 / 12.70
0.500 / 12.70
0.500 / 12.70
0.500 / 12.70
2.00
0.25
0.50
0.500 / 12.70
0.270 / 6.86
0.375 / 9.53
*Available in hermetically sealed
0.180
0.250
0.375
0.245
0.300
/
/
/
/
/
AWG
4.57
6.35
9.53
6.22
7.62
0.500 / 12.70
0.375 / 9.53
0.500 / 12.70
0.310 / 7.87
0.343 / 8.71
0.500 / 12.70
0.750 / 19.05
0.810 / 20.57
1.00 / 25.40
0.750 / 19.05
1.00 / 25.40
0.500 / 12.70
1.00 / 25.40
1.50 / 38.10
1.75 / 44.45
2.00 / 50.8
0.320 / 8.13
0.500 / 12.70
H O W TO ORDER
203MA1M700T
Type Military
Group A
“M” characteristic does
not indicate product is
QPL to Mil-PRF-39005
Format*
Resistance
A = axial
1R000 =
1Ω
PA = round radial 10R00 = 10 Ω
100R0 = 100 Ω
*All formats and 1K000 = 1000 Ω
tolerances not
10K00 = 10 KΩ
available in all
100K0 = 100 KΩ
values
1M700 = 1.7 MΩ
Tolerance*
V = 0.005%
T = 0.01%
Q = 0.02%
A = 0.05%
B = 0.1%
C = 0.25%
D = 0.5%
F = 1.0%
Conversion of RBR to
Commercially-tested Product
RBR52
RBR53
RBR54
RBR55
RBR56
RBR71
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
310MAxxxxxx
307MAxxxxxx
207MAxxxxxx
205MAxxxxxx
203MAxxxxxx
203MPAxxxxxx
127
26
24
22
22
22
22
22
22
22
20
20
20
20
20
20
20
20
20
20
20
20
22
20
Lead Diam.
0.016
0.020
0.026
0.026
0.026
0.026
0.026
0.026
0.026
0.032
0.032
0.032
0.032
0.032
0.032
0.032
0.032
0.032
0.032
0.032
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
0.406
0.508
0.660
0.660
0.660
0.660
0.660
0.660
0.660
0.813
0.813
0.813
0.813
0.813
0.813
0.813
0.813
0.813
0.813
0.813
0.032 / 0.813
0.026 / 0.660
0.032 / 0.813
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