Ultra Precision
Ultra Precision
Precision
Metal Film Resistors
Metal Film Resistors
Metal Film Resistors
Welwyn Components
Welwyn Components
CAR
CAR series series
CAR series
Tolerance down
Tolerance down to 0.01% to 0.01%
Tolerance down to 0.01%
Low
Low TCR’sTCR’s
Low TCR’s
High High reliability
reliability
High Superior moisture performance
reliability
Superior moisture performance
·
·
·
·
· Non standard values available
Superior moisture performance
Non standard values available
· Highest stability metalmetalavailable
film
Non standard values available available
Highest stability
film
· Matchedstability metal networks
sets and networks
Highest
Matched sets and film available
Matched sets and networks
Electrical Data
Electrical Data
CAR5
CAR6
CAR6 0.33
CAR7
Power rating at 70°C
watts
CAR5 0.25
Power rating
Power rating at 70°Cat 85°C
watts watts0.25 0.125
Resistance range
Power rating at 85°C
watts ohms 10R0 to 3M 10R0 to 5M 10R0 to 10M
0.125
0.25
0.33
Limiting element voltage
Resistance range
ohms
TCR (20 to +70°C)
Limiting element voltage
°C/watt
Ambient temperature range
Thermal impedance
CAR5
See tolerance/TCR
below
combinations
60
below
70-55 to +155 60
-55 to +155
Table of Resistance Restrictions
Table of Resistance Restrictions
Tolerance
CAR6
Tolerance
ppm/°C 0.01-0.02%
CAR5 0.05%
TCR
110 E96 preferred
70
E24,
°C
TCR
Notes
5(V), 10(T), 15(Y), 25(D), 50(C)
350
500
°C110
°C/watt
Ambient temperature range
0.33
0.01(L), 0.02(P), 0.05(W),E24, E96 preferred & 1(F)
0.1(B), 0.25(C), 0.5(D)
%
Thermal
Standard values impedance
0.5
0.5
% 5(V), 10(T), 15(Y), 25(D), 50(C) 0.5(D) & See tolerance/TCR
0.01(L), 0.02(P), 0.05(W), 0.1(B), 0.25(C),
1(F)
combinations
ppm/°C
Standard values
Resistance tolerance
0.25
volts to 3M 10R0 to 5M 10R0 to 10M
250
350
500
10R0
voltsppm/°C250
Resistance
TCR (20 to +70°C)tolerance
0.33
CAR7
Notes
0.1-1%
0.01/0.02%
CAR6 0.05%
CAR7
0.1-1%
0.01-0.02%
CAR7 0.05%
0.1-1%
1
5
50 to
10
10
50 to
10
10
50 to
10
10
ppm/°C 0.01-0.02% 300k
0.05% to 500k
0.1-1% to 500k
0.01/0.02% 500k
0.05% to 500k
0.1-1% to 500k
0.01-0.02% 750k
0.05% to 750k
0.1-1% to 750k
51
10 50 to 300k 300kto 500k to 1M to 500k to 1M to 500k 500kto 500k to 1M to 500k to 1M to 750k 750kto 750k to 1M to 750k 1.5M
50 to 10
10
10
50 to 10
10
10
50 to 10
10
10 to
10
50
10
50
10
10
15 50 to 300k 300k to 1M to 1M to 1M to 1M to 500k 500k to 1M to 1M to 1M to 1M to 750k 750k to 1M to 1M to 1.5M 3.5M
50 to 10
10
10
50 to 10
10
10
50 to 10
10
10 to
10
50
10
50
10
15
25 50 to 300k 300k to 1M to 1M to 1M to 1.5Mto 500k 500k to 1M to 1M to 1M to 3M to 750k 750k to 1M to 1M to 3.5M to 5M
50 to 10
10
10
50 to 10
10
10
50 to 10
10
10
10
50
10
50
10
25
50 50 to 300k 300k to 1M to 1M to 1.5M to 3M to 500k 500k to 1M to 1M to 3M to 5M to 750k 750k to 1M to 1M to 5M to 10M
50 to 10
10
10
50 to 10
10
10
50 to 10
10
10
10
50
10
50
10
50
50 to 300k
10 to 1M
10 to 3M
Physical Data
Physical Data Weight (g)
Dimensions (mm) and
50 to 500k
10 to 1M
Note1: Based on sampling. 100% screened product is available.
PCB
Dimensions (mm) and Weight (g)
PCB mounting
Min
Type
L Max
CAR5 Max
L
D Max
10 to 5M
Note1: Based 50 to 750k 100% screened 10 to 10Mavailable.
on sampling. 10 to 1M
product is
f min
Min
Bend
d mounting Bend Radius
nom. centres
Wt.
Wt.
nom.
7.2 Max
D
2.5f min
30 nom. 0.6
d
centres 10.2
Radius
0.6
nom.
0.24
CAR5 CAR67.2
10.0
2.5
3.7 30
30 0.6
0.6
10.2
12.70.6
0.60.24
0.40
CAR6 CAR7
10.0
15.5
3.7
5.5 30
30 0.6
0.8
12.7
18.40.6
1.20.40
1.15
5.5
30
0.8
18.4
1.2
d
D
1.15
Type
CAR7
15.5
d
D
L
L
f
f
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
General Note
General Note
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
Welwyn Components reserves to right to make changes in product specification without notice
TT electronics plc
TT electronics reserves the right themake changes in product specification without notice or liability.or liability.
A subsidiary of
All information is subjectto TT electronics’ Limited · Bedlington, Northumberland NE22 going print.
© Welwyn to Welwyn’s own data and is considered accurate at at time of 7AA, to
All information is subject Components own data and is considered accuratetime of going to UK print.
www.bitechnologies.com
TT electronics plc
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com www.irctt.com www.welwyn-tt.com
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
© TT electronics plc 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Telephone: +44 (0) 1670
178
10. 11
178