Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
Fax: (951) 369-1151
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
© 2004 Caddock Electronics, Inc.
CAD
K
DOC
6
5
4
3
2
1
7
6
5
4
3
2
1
7
6
5
4
3
2
1
7
6
5
4
3
2
1
7
Fig.
Resistance Values
Model
No.
Absolute Stability
Max. % Change in
Resistance Value
Shelf Life
Load Life
Max. Power
Rating
Watts
Total Pkg.
Maximum
Absolute
TC
ppm/°C
Absolute
Tolerance
%
RA
RB
RC
RD
1
2
3
4
Power Rating
Watts
RA
RB
RC
RD
1787-31
0.25
80
0.03
0.05
1.0
999.9 Ω 99.9 Ω
9.9 Ω
0.9 Ω
1
0.25
0.25
0.50
1.0
1787-312
0.10
80
0.02
0.03
1.0
999.9 Ω 99.9 Ω
9.9 Ω
0.9 Ω
1
0.25
0.25
0.50
1.0
1787-41
0.25
80
0.03
0.05
1.0
1,000 Ω 100 Ω
10 Ω
1 Ω
2
0.25
0.25
0.50
1.0
1787-412
0.10
80
0.02
0.03
1.0
1,000 Ω 100 Ω
10 Ω
1 Ω
2
0.25
0.25
0.50
1.0
1787-5
0.25
50
0.02
0.04
N/A
999 Ω
99 Ω
9 Ω
N/A
3
0.25
0.25
0.75
0.75
1787-53
0.10
50
0.01
0.02
N/A
999 Ω
99 Ω
9 Ω
N/A
3
0.25
0.25
0.75
0.75
1787-535
0.05
50
0.01
0.02
N/A
999 Ω
99 Ω
9 Ω
N/A
3
0.25
0.25
0.75
0.75
1787-6
0.25
50
0.02
0.04
N/A
1,000 Ω 100 Ω
10 Ω
N/A
4
0.25
0.25
0.75
0.75
1787-64
0.10
50
0.01
0.02
N/A
1,000 Ω 100 Ω
10 Ω
N/A
4
0.25
0.25
0.75
0.75
1787-645
0.05
50
0.01
0.02
N/A
1,000 Ω 100 Ω
10 Ω
N/A
4
0.25
0.25
0.75
0.75
1787-13
0.25
100
0.03
0.05
N/A
99.9 Ω
9.9 Ω
0.9 Ω
N/A
5
0.25
0.50
1.0
1.0
1787-132
0.10
100
0.02
0.03
N/A
99.9 Ω
9.9 Ω
0.9 Ω
N/A
5
0.25
0.50
1.0
1.0
Accurate Current Sensing in Multi-Range Instrumentation
Type 1787 Current Sense Resistor Networks utilize
Caddock's Micronox® resistance films and advanced high
thru-put laser manufacturing capabilities to achieve many
vital advantages in precision current measurement circuits,
including laboratory and bench-type digital instrumentation:
• The thin-profile single-package configuration replaces as
many as four discrete current sense resistors.
• The monolithic construction and standardized lead spacing
simplify installation.
• Caddock Micronox® resistance films provide exceptional
stability for improved long-term measurement accuracy.
Twelve standard models in five network arrangements
provide the specific accuracy and resistance values required
for a wide range of current measuring instruments and
circuits.
Prototype quantities of most models of the Type 1787
Current Sense Resistor Networks are available either from
stock or within 6 weeks after receipt of order.
Absolute Tolerance:
Tolerance of RA, RB, RC, or RD when
measured in accordance with proper
Figure No.
Absolute Temperature Coefficient:
Temperature coefficient of RA, RB, RC, or
RD from 0°C to +70°C, referenced to
+25°C.
Load Life: Stability of RA, RB, RC, or RD
with full power applied individually for
2,000 hours at +70°C.
Shelf Life: Stability of RA, RB, RC, or RD for
six months at shelf conditions.
Storage Temperature: -55°C to +85°C.
Type 1787 Current Sense Resistor Networks
Page 1 of 2
28_IL119.1004
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