High Voltage
High Voltage
Voltage
Chip Resistors
Chip Resistors
Resistors
HVC SeriesSeries
HVC
HVC Series
Continuous voltages up to
Continuous voltages up to 3kV 3kV
Continuous voltages up to 3kV
Overload voltages up to 4kV 4kV
Overload voltages up to
Overload voltages up to 4kV
Values up to 1G0 100M
Values up to
Values up to 100M
Tolerances to ±0.5%
Tolerances to ±0.5%
TCR to ±50ppm/°C
Tolerances to ±0.5%
Robust thick film construction
Robust thick film construction
Robust thick film construction
Anti-sulphur version available
Welwyn Components
Welwyn Components
·
·
·
·
·
·
·
Electrical Data
Electrical Data
1206
Power rating @70°C
Power rLimitin@70ement voltage
ating g el °C
Limiting elerloent vollttage (2s)
Ov em ad vo age
Overload voltage (2s)
Resistance range
Resistance range
Resistance tolerance
Resistance tolerance
TCR
TCR Ambient temperature range
AmbienValues erature range
t temp
Values Thermal Impedance
Thermal Impedance
Watts
1206
0.3
Watts Volts 0.3 1000
Volts Volts1000 1500
Volts
Ohms
%
%
ppm/°C
ppm/°C
°C
°C
°C/W
°C/W
200
1500
Ohms
2010
0.5
2010
0.5
2000
2512
1
2512
1
Notes
Notes
3000
DC or AC peak
2000 3000
3000 4000
DC or AC peak
3000
4000
Consult factory for
10K to 1G0
Consult factory for values
out of range
10K to 1G0
out of range values of
See table
0.5,1,2,5,10
See table of ranges
value
0.5,1,2,5,10
value ranges
50, 100
50, 100 to +155
-55
-55E24+155 preferred
to & E96
2E24 & E96 preferred
00
80
80
70
Any value to order
70 Any value to order
Value Ranges (Ohms)
Value Ranges (Ohms)
TCR (ppm/ºC)
Size
TCR (ppm/ºC)
50
1206
50
100
1206
100
50
2010 & 2512 50
100
2010 & 2512
100
Size
0.5
-
0.5
-
10K to 2M
10K to 2M
-
-
10K to 10M
10K to 10M
Tolerance (%)
Tolerance (%)
1&2
1&2
10K to 10M
10K to 10M
10K to 100M
10K to 100M
5 & 10
5 & 10
10K to 100M
10K to 100M
10K to 1G0
10K to 1G0
10K to 100M
10K to 100M
10K to 1G0
10K to 1G0
Physical Data
Physical Data
L
Dimensions (mm) & Weight (g)
Dimensions (mm) & Weight (g) W
L
T
A
B
C
Wt.
W
T
A
B
C
Wt.
3.2±0.2
1.6±0.2
0.6±0.1 0.35±0.2 1.95 min 0.35±0.2
0.010
1206
3.2±0.2
1.6±0.2
0.6±0.1 0.35±0.2 1.95 min 0.35±0.2
0.010
1206
2010
5.1±0.2
2.5±0.2
0.7±0.1 0.45±0.2 3.70 min 0.4±0.25
0.035
5.1±0.2
2.5±0.2
0.7±0.1 0.45±0.2 3.70 min 0.4±0.25
0.035
6.5±0.2
3.2±0.2
0.7±0.1 0.45±0.2 5.00 min 0.4±0.2
0.055
6.5±0.2
3.2±0.2
0.7±0.1 0.45±0.2 5.00 min 0.4±0.2
0.055
A
C
C
T
A
B
L
B
L
T
2010
2512
2512
W
A
W
A
Wrap-around terminations
(3 faces)
Wrap-around terminations
(3 faces)
General Note
Welwyn
General Note
Components reserves the right to make changes in product specification without notice or liability.
General Note
All information is subject right
Welwyn Components reserves to to Welwyn’s own data and is considered accurate at time of going to print.
TT electronics reserves the right themake to make in product specification without notice or notice or liability.
changes changes in product specification without liability.
All information is subject to TT electronics’ own data and is considered accuratetime of going to print.
information is subject to Welwyn’s own data and is considered accurate at at time of going to print.
All
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
A subsidiary of
84
TT electronics plc
A subsidiary of
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
TT electronics plc
01.11
Telephone: +44 (0) 1670 822181 Bedlington, Northumberland NE22 7AA, UK
© Welwyn Components Limited
· ·Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
© TT electronics plc
822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
01.11
Telephone: +44 (0) 1670
84
05.13
High Voltage
High Voltage
Chip Resistors
Chip Resistors
HVC Series
HVC Series
Construction
Resistive thick film material, overglaze and organic
protection are screen printed on a 96% alumina substrate.
The design and laser adjustment of the resistive element
optimises the limiting element voltage of the resistor.
Welwyn Components
Solderability
The terminations have an electroplated nickel barrier and tin
finish. This ensures excellent ‘leach’ resistance properties and
solderability.
Terminations
The chips are supplied with wrap-around terminations
suitable for soldering. Consult factory for alternative
termination options.
Marking
The body protection is resistant to all normal cleaning solvents
suitable for printed circuits. The chips are not marked and the
relevant information on type, value, tolerance date code and
quantity are recorded on the reel.
Performance Data
Maximum
Load at rated power:
Shelf life test:
1000 hours rated load @ 70°C
Typical
1206:
1
2010/2512:
0.25
0.02
Zero at 155°C
0.2
0.2
0.1
0.25
0.05
0.05
0.05
1206:
-15
2010:
-5
2512
≤100M:
-1.5
2512
>100M: -8
∆R%
∆
R%
∆
R%
∆
R%
∆
R%
∆
R%
∆
R%
∆
R%
1206:
2
2010/2512:
1
0.1
2
0.5
0.5
1
0.25
0.25
0.25
12 months at room temperature
Derating from rated power at 70°C
Short term overload:
Lightning strike:
Dry heat:
Lesser of 6.25 x rated power or Maximum overload voltage
1.2/50µs & 10/700µs - see graph for peak voltage
1000 hours at 155°C
Long term damp heat
Temperature rapid change
Resistance to solder heat
Resistance to sulphur-bearing gas (AS version only): ASTM-B-809
Voltage proof
Voltage coefficient of resistance
Volts
ppm/V
500
1206:
-25
2010:
-15
2512
≤100M:
-5
2512
>100M: -15
Maximum Continuous Voltage
3500
Lightning Strike Performance
8
Peak Voltage (kV)
3000
6
4
2
0
0.01
Voltage (V)
2500
2000
1500
1000
500
0
0.01
0.1
1
10
100
1000
Resistance Value (MΩ)
0.1
1
10
100
1000
Resistance Value (MΩ)
HVC1206
HVC2512
HVC2010
Commodity Chip
1206-1.2/50µs
2010-1.2/50µs
2512-1.2/50µs
1206-10/700µs
2010-10/700µs
2512-10/700µs
Note: maximum peak voltage tested was 6kV; performance beyond this is estimated.
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© 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
© TT electronics plc
07.11
05.13
85
High Voltage
High Voltage
Chip Resistors
HVC Series
HVC Series
Chip Resistors
Application Notes
Welwyn Components
HVC resistors are ideally suited for handling by automatic
methods due to their rectangular shape and the small
dimensional tolerances. Electrical connection to a ceramic
substrate or to a printed circuit board can be made by reflow
or wave soldering of wrap-around terminations.
Wrap-around terminations provide good leach properties and
ensure reliable contact. Due to the robust construction, the
HVC can be immersed in the solder bath for 30 seconds at
260°C. This enables the resistor to be mounted on one side
of a printed circuit board and wire-leaded components
applied on the other side.
HVC resistors themselves can operate at a maximum
temperature of 155°C (see performance above). For soldered
resistors, the joint temperature should not exceed 110°C. This
condition is met when the stated power levels at 70°C are used.
The PCB layout should avoid tracks running between the HVC
mounting pads, as this would compromise the LEV.
The LEV stated applies to operation at sea-level pressure, in a
non-condensing atmosphere and non-contaminating
environment. Voltage derating should be applied if low
pressure, high humidity or contamination may be encountered.
The termination clearance dimension (B) should be used in
conjunction with the creepage limit applicable to the circuit
application in order to determine the derated LEV.
Packaging
HVC Resistors are supplied taped and reeled as per IEC 286-3.
T
2
D
0
P
2
P
0
T
Marking
(Both sides)
33
±
1.0
Wr
E
13
±
0.5
F
178
±
2
80
±
2
B
0
2.5
±
0.5
0.8
±
0.15
T
1
K
0
A
0
P
1
D
1
Tape and reel dimensions (mm)
Wr
±0.5
1206
2010
2512
9
13
13
W
±0.3
8
12
12
P1
±0.1
4
8
8
P0
±0.1
4
4
4
P2
±0.05
2
2
2
D0
±0.1
1.5
1.5
1.5
D1
±0.2
1
1.5
1.5
E
±0.1
1.75
1.75
1.75
F
±0.05
3.5
5.5
5.5
A0
±0.1
1.95
2.79
3.61
B0
±0.1
3.55
5.89
6.96
K0
±0.1
1.0
0.91
1.17
T
±0.05
0.2
0.28
0.28
T1
Nom.
0.05
0.06
0.06
T2
±0.15
1.3
1.21
1.45
G
W
Qty.
per
reel
3000
3000
1800
Ordering Procedure
Example: HVC2512 at 4.7 megohms and 1% tolerance on a reel of 1800 pieces -
Type
Size
TCR
C
100ppm/°C
50ppm/°C
T3
T18
Tape
1206 or 2010
2512
3000/reel
1800/reel
Packing
Standard
Termination
AS
Standard terminations
Anti-sulphur terminations
Tolerance (use IEC62 code)
D
F
G
0.5%
1%
2%
J
K
5%
10%
Value (use IEC62 code)
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0)
General Note
1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
01.11
86
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
05.13
Microchip MCU
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