High Value Thick Film
Resistors
GC Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
General Note
TT electronics reserves the right to make changes in product specification 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
10. 11
· High working voltage to 10kV
· Value up to 1G ohm
· Custom product available
· High stability thick film
High Value Thick Film
Resistors
GC Series
sHigh working voltage to 10kV
sValue up to 1G ohm
sCustom product available
sHigh stability thick film
GC55 GC65 GC70
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Values E24 & E96 preferred
0709041ttaw/C°ecnadepmi lamrehT
551 ot 55 -C°egnar erutarepmet tneibmA
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Electrical Data
11.09
A subsidiary of
TT electronics plc
Welwyn Components
Construction
Thick film material is fired on to high grade ceramic rods.
Tin plated steel caps are force fitted and the termination
wires are welded to the caps. The value is obtained by a
helical cut in the film and finally the resistor body is given a
high temperature protective coating.
Terminations
Material Solder coated copper wire.
Strength The terminations satisfy the requirements of
IEC 68.2.21.
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2.
Marking
1% tolerance resistors are colour coded with 5 bands, 2%
and 5% tolerance have 4, IEC 62 colours are used.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuit boards.
Dimensions (mm) and Weight (g)
PCB Min
mounting
bend Wt
Type L max. D max. f min. d nom. centres radius nom.
GC55 6.2 2.5 21.0 0.6 10.2 0.6 0.3
GC65 9.0 3.6 19.6 0.8 13.7 1.2 0.6
GC70 14.5 5.3 23.6 0.8 20.3 1.2 1.1
Physical Data
L
Df
d
High Value Thick Film
Resistors
GC Series
sHigh working voltage to 10kV
sValue up to 1G ohm
sCustom product available
sHigh stability thick film
GC55 GC65 GC70
0.15.052.0sttawC°07 ta gnitar rewoP
G1 ot k74gem 009 ot k74gem 009 ot k74smhoegnar ecnatsiseR
0000100530071kaeP ca ro cd stloVegatlov tnemele gnitimiL
007stlovegatlov noitalosI
001C°/mpp)C°07 ot C°02( RCT
5 ,2 ,1%ecnarelot ecnatsiseR
Values E24 & E96 preferred
0709041ttaw/C°ecnadepmi lamrehT
551 ot 55 -C°egnar erutarepmet tneibmA
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Electrical Data
11.09
A subsidiary of
TT electronics plc
Welwyn Components
Construction
Thick film material is fired on to high grade ceramic rods.
Tin plated steel caps are force fitted and the termination
wires are welded to the caps. The value is obtained by a
helical cut in the film and finally the resistor body is given a
high temperature protective coating.
Terminations
Material Solder coated copper wire.
Strength The terminations satisfy the requirements of
IEC 68.2.21.
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2.
Marking
1% tolerance resistors are colour coded with 5 bands, 2%
and 5% tolerance have 4, IEC 62 colours are used.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuit boards.
Dimensions (mm) and Weight (g)
PCB Min
mounting
bend Wt
Type L max. D max. f min. d nom. centres radius nom.
GC55 6.2 2.5 21.0 0.6 10.2 0.6 0.3
GC65 9.0 3.6 19.6 0.8 13.7 1.2 0.6
GC70 14.5 5.3 23.6 0.8 20.3 1.2 1.1
Physical Data
L
Df
d
High Value Thick Film
Resistors
GC Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
General Note
TT electronics reserves the right to make changes in product specification 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
10. 11
High Value Thick Film
Resistors
GC Series
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 11.09
Welwyn Components
b
f1f2
66
c
Body Location f1 – f2≤ 1.4 mm
Packaging
The standard method of packaging GC resistors is taped in
ammo packs. Taped resistors on reel or loose packed
components can also be supplied by special request. In the
case of tape packed components the usable lead length is
reduced by the width of the tape. A detailed taping
specification is available on request.
Figure 2
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Load at rated power: 1000 hrs at 70°c ∆5.01%R
Derating Zero at 155°C
Overload ∆2.01%R
Climatic ∆52.01%R
Climatic category ∆65/551/55%R
Temperature rapid change ∆51.01%R
Resistance to Solder Heat ∆30.02.0%R
Vibration and bump ∆20.01.0%R
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Performance Data
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GC55/GC65 52 5
017607CG
N.B. This product can be custom built to meet specific voltage coefficient or pulse requirements.
Ordering Procedure
Example: GC55 at 4.7 megohms and 2% tolerance in ammo pack box of up to 5000 pieces -
G C 5 5 – 4 M 7 G I
Type
Value (use IEC62 code)
Tolerance (use IEC62 code)
F
1%
G
2%
J
5%
Packing
I
Ammo
GC55
Up to 5000/box
Standard
GC65
Up to 2500/box
GC70
Up to 1000/box
