Ohmite’s High Voltage Flip Chip Series incorporates high accuracy screen printing technology to achieve high voltage capability
in a stable flip chip SMD chip resistor package. The HVF Series
offers unmatched performance in comparison to standard chip
resistors. Its unique design provides lower voltage and temperature coefficients, less noise, tighter tolerances, better stability,
higher resistance values, and higher voltage ratings. HVF is
available in convenient 1206 and 2512 footprints.
Features
Specifications
• High voltage up to 3,000 volts
• Industry standard sizes
• Working temperature range
–55°C to 200°C
• Designed for automatic insertion
• Non-magnetic construction
Resistance Range:
1KΩ to 100GΩ
Resistance Tolerance: ±1% std.;
5% for HVF1206 100MΩ-10GΩ
more; 10% for 10GΩ+
Temperature Coefficient:
±100ppm std.
Coating: Silicone
Solder Pad Material: Silver
(PdAg)
Note: HVF Series should not be
used with tin-lead based solder
compositions. Only silver-based
solder compositions are recommended. Care should be taken
in the selection of the solder flux
contained in the solder paste.
Some pastes are "corrosive" and
can damage the coating and
also the resistive layer during the
soldering process at high temperature. PCBs must be properly
cleaned to remove any layers of
moisture containing halides below
the resistor.
We recommend Halide Free
(or Halogen Free) solder pastes,
containing for example ROL0 or
similar.
It is advisable for the PCB
layout to provide a slot, or air
gap, underneath the downward
facing resistor element, thereby
increasing insulation resistance
and reducing the possibility of
capacitive coupling to the PCB.
Under no circumstances should
any copper trace be present in the
layout directly under the resistive
element.
Derating
Percent Rated Watts
100
70°
80
60
40
20
0
0
50
100
150
Ambient Temperature, °C
200
V o lta g e c o e f f i c i e n t
o f R e s i s ta n c e
Resistance
Range
VCR
(-ppm/V)*
1206
1K ..10MΩ
10M ..100MΩ
100M ..1GΩ
1GΩ .. 5GΩ
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