High Voltage
Chip Resistors
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.
Marking
Terminations
The chips are supplied with wrap-around terminations
suitable for soldering. Consult factory for alternative
termination options.
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
1206:
-15
2010:
-5
2512:
-1.5
∆R%
∆R%
∆R%
∆R%
∆R%
∆R%
∆R%
∆R%
Volts
ppm/V
1206:
2
2010/2512:
1
0.1
2
0.5
0.5
1
0.25
0.25
500
1206:
-25
2010:
-15
2512:
-5
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 1.5 x LEV for 2S
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
Voltage proof
Voltage coefficient of resistance
Maximum Continuous Voltage
3500
8
Lightning
Strike
Performance
Peak Voltage (kV)
3000
2500
6
Voltage (V)
2000
1500
1000
4
2
0
500
0
0.1
1
10
100
1206-1.2/50
2010-10/700
1206-10/700
2512-1.2/50
2010-1.2/50
2512-10/700
0.1
1
10
100
Resistance Value (MOhms)
Resistance Value (MOhms)
HVC1206
HVC2512
HVC2010
Commodity Chip
Note: maximum peak voltage tested was 6kV; performance beyond this is estimated.
© 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
Issue D · 11.05
85
WELWYN [ WELWYN COMPONENTS LIMITED ]
