Datasheet

Ultra Precision
Metal Film Resistors
CAR series
Figure 1
Construction
Ceramic rods are coated with a metal film and plated steel
caps are force fitted. A helical cut is used to adjust the film to
its final value.
Termination wires are welded to the caps and the resistor is
protected with a specially formulated epoxy coating.
Terminations
Material Solderable finish copper wire.
Strength The terminations meet the requirements of
IEC 68.2.21
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Ultra Precision
Metal Film Resistors
CAR series
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
179
Welwyn Components
Values 10 ≤ 250k Values > 250k
Actual Performance Actual Performance
Maximum Typical Maximum Typical
Load at rated power : 1000 hrs at 70°C (or 85°C) ∆R % 0.05 0.02 0.25 0.05
Dry heat : 1000 hrs at 155°C ∆R % 0.15 0.08 1 0.2
Shelf life : 12 months at room temperature ∆R % 0.01 0.003 0.04 0.02
C°551 ta oreZC°551 ta oreZ)C°58 ro( C°07 ta rewop detar morf gnitareD
Short term overload ∆R % 0.01 0.001 0.08 0.01
Climatic ∆R % 0.05 0.02 0.2 0.05
65/551/5565/551/55yrogetac citamilC
Long term damp heat ∆R % 0.05 0.02 0.2 0.05
Temperature rapid change ∆R % 0.04 0.02 0.25 0.05
Resistance to solder heat ∆R % 0.02 0.003 0.05 0.005
Vibration and bump ∆R % 0.02 0.002 0.06 0.02
1.0130.02.0V/Vµ)ycneuqerf fo edaced a ni( esioN
50.0<2.050.0<3.0V/mppecnatsiser fo tneiciffeoc egatloV
Marking
Type reference, TCR code, resistance value and tolerance
code.
The resistance value marking conforms to IEC 62.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuits.
Performance Data
Application Notes
Resistors can be supplied matched for tolerance and TCR
down to ±0.005% and ±1ppm/°C, respectively, either as
separate resistors or pre-assembled and encapsulated within a
plastic box.
The individual resistors within a set or module can be
manufactured with a tolerance of ±0.01% and a TCR of
±5ppm/°C.
52
f
1
f
2
66
5
Body location f
1
– f
2
≤ 1.4 mm
11.17
General Note
TT Electronics reserves the right to make changes in product specication without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Figure 1
Construction
Ceramic rods are coated with a metal film and plated steel
caps are force fitted. A helical cut is used to adjust the film to
its final value.
Termination wires are welded to the caps and the resistor is
protected with a specially formulated epoxy coating.
Terminations
Material Solderable finish copper wire.
Strength The terminations meet the requirements of
IEC 68.2.21
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Ultra Precision
Metal Film Resistors
CAR series
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
179
Welwyn Components
Values 10 ≤ 250k Values > 250k
Actual Performance Actual Performance
Maximum Typical Maximum Typical
Load at rated power : 1000 hrs at 70°C (or 85°C) ∆R % 0.05 0.02 0.25 0.05
Dry heat : 1000 hrs at 155°C ∆R % 0.15 0.08 1 0.2
Shelf life : 12 months at room temperature ∆R % 0.01 0.003 0.04 0.02
C°551 ta oreZC°551 ta oreZ)C°58 ro( C°07 ta rewop detar morf gnitareD
Short term overload ∆R % 0.01 0.001 0.08 0.01
Climatic ∆R % 0.05 0.02 0.2 0.05
65/551/5565/551/55yrogetac citamilC
Long term damp heat ∆R % 0.05 0.02 0.2 0.05
Temperature rapid change ∆R % 0.04 0.02 0.25 0.05
Resistance to solder heat ∆R % 0.02 0.003 0.05 0.005
Vibration and bump ∆R % 0.02 0.002 0.06 0.02
1.0130.02.0V/Vµ)ycneuqerf fo edaced a ni( esioN
50.0<2.050.0<3.0V/mppecnatsiser fo tneiciffeoc egatloV
Marking
Type reference, TCR code, resistance value and tolerance
code.
The resistance value marking conforms to IEC 62.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuits.
Performance Data
Application Notes
Resistors can be supplied matched for tolerance and TCR
down to ±0.005% and ±1ppm/°C, respectively, either as
separate resistors or pre-assembled and encapsulated within a
plastic box.
The individual resistors within a set or module can be
manufactured with a tolerance of ±0.01% and a TCR of
±5ppm/°C.
52
f
1
f
2
66
5
Body location f
1
– f
2
≤ 1.4 mm
Figure 1
Construction
Ceramic rods are coated with a metal film and plated steel
caps are force fitted. A helical cut is used to adjust the film to
its final value.
Termination wires are welded to the caps and the resistor is
protected with a specially formulated epoxy coating.
Terminations
Material Solderable finish copper wire.
Strength The terminations meet the requirements of
IEC 68.2.21
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Ultra Precision
Metal Film Resistors
CAR series
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
179
Welwyn Components
Values 10 ≤ 250k Values > 250k
Actual Performance Actual Performance
Maximum Typical Maximum Typical
Load at rated power : 1000 hrs at 70°C (or 85°C) ∆R % 0.05 0.02 0.25 0.05
Dry heat : 1000 hrs at 155°C ∆R % 0.15 0.08 1 0.2
Shelf life : 12 months at room temperature ∆R % 0.01 0.003 0.04 0.02
C°551 ta oreZC°551 ta oreZ)C°58 ro( C°07 ta rewop detar morf gnitareD
Short term overload ∆R % 0.01 0.001 0.08 0.01
Climatic ∆R % 0.05 0.02 0.2 0.05
65/551/5565/551/55yrogetac citamilC
Long term damp heat ∆R % 0.05 0.02 0.2 0.05
Temperature rapid change ∆R % 0.04 0.02 0.25 0.05
Resistance to solder heat ∆R % 0.02 0.003 0.05 0.005
Vibration and bump ∆R % 0.02 0.002 0.06 0.02
1.0130.02.0V/Vµ)ycneuqerf fo edaced a ni( esioN
50.0<2.050.0<3.0V/mppecnatsiser fo tneiciffeoc egatloV
Marking
Type reference, TCR code, resistance value and tolerance
code.
The resistance value marking conforms to IEC 62.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuits.
Performance Data
Application Notes
Resistors can be supplied matched for tolerance and TCR
down to ±0.005% and ±1ppm/°C, respectively, either as
separate resistors or pre-assembled and encapsulated within a
plastic box.
The individual resistors within a set or module can be
manufactured with a tolerance of ±0.01% and a TCR of
±5ppm/°C.
52
f
1
f
2
66
5
Body location f
1
– f
2
≤ 1.4 mm
CAR5 and CAR6 standard packing is in tape, as
shown below, whilst CAR7 is bulk packed.
Packaging