Lower Range High Voltage Chip Resistors
LHVC Series
Welwyn Components
Superior voltage performance over commercial range chips
0805, 1206 and 2010 sizes
Resistance 50Kohms to 10Mohms
RoHS compliant
Electrical Data
LHVC0805
Power rating at 70C
Resistance range
Limiting element voltage
5s Overload voltage
Dielectric withstand voltage
TCR
Resistance tolerance
Standard values
Ambient temperature range
°C
watts
ohms
dc volts
dc volts
volts
ppm/°C
%
0.125
100K to 10M
300
800
LHVC1206
0.25
100K to 10M
400
1000
500V
±200
1, 5
E24 (5% tolerance) & E96 (1% tolerance)
-55 to +155
LHVC2010
0.5
50K to 10M
800
3000
Physical Data
Dimensions in mm
Type
LHVC0805
LHVC1206
LHVC2010
L
2.00 ±0.15
3.10 ±0.15
5.00 ±0.10
W
1.25 +0.15/-0.10
1.55 +0.15/-0.10
2.50 +0.15/-0.10
T
0.55 ±0.10
0.55 ±0.10
0.55 ±0.10
D1
0.40 ±0.20
0.45 ±0.20
0.60 ±0.25
D2
0.40 ±0.20
0.45 ±0.20
0.50 ±0.20
Nom wt. (g)
0.005
0.012
0.036
Construction
Pd/Ag terminations are applied to the top and bottom of an alumina
substrate. A resistive element is printed between the top face
conductors, which is then adjusted to value and protected.
A wraparound conductor is applied to join the top and bottom
sides. The terminations are electroplated with a Ni barrier layer prior
to plating with a Sn finish.
Solvent Resistance
The body protection and marking are resistant to all normal industrial
solvents suitable for printed circuits.
Flammability
The resistor will not burn or emit incandescent particles under any
condition of applied temperature or overload.
Solderability
95% min coverage (MIL-STD 202F / 208H, 235C 2 secs)
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
02 . 08
Lower Range High Voltage Chip Resistors
LHVC series
Welwyn Components
Mounting
Type
LHVC0805
LHVC1206
LHVC2010
A
1.0
2.0
4.0
(nominal dimensions in mm)
B
0.8
1.0
1.2
C
1.50
1.75
2.75
B
R%
R%
R%
R%
ohms
A
C
Performance Data
Load at rated power (1000hrs cyclic load at 70C)
De-rating from rated power at 70C
Short term overload (6.25 x rated power for 5s)
Temperature rapid change (-55 / +155ºC, 5 cycles)
Damp heat steady state
Insulation resistance
Maximum
±3
See Graph
±2 (0805, 2010): ±3(1206)
±0.5 (1% tolerance chips): ±1 (5% tolerance chips)
±3
>1000MΩ
Proportion of Pr
Power de-rating graph
100%
0%
-55
70
155
T
(°C)
Packaging
The standard packing for LHVC0805 and 1206 parts is on 8mm wide paper tape wound on 178mm diameter reels.
LHVC2010 parts are packed in plastic 12mm wide tape on a 178mm reel.
Ordering Procedure
Example: LHVC0805 at 100k ohms and 1% tolerance on reel of 5000 pieces:
LHVC0805 –
Type
Value (use IEC62 code)
F
J
100K
F T5
Tolerance (use IEC62 code)
1%
5%
Packing
T5
T4
Tape
0805 / 1206
2010
5,000 / reel
4,000 / reel
Standard
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
02 . 08
PCB设计
