HTHG* (Z1-Foil)
Vishay Foil Resistors
Ultra High Precision Z1-Foil Technology Gold Wire Bondable Chip
Resistor for Hybrid Circuits for High Temperature Applications
up to +240°C, Long Term Stability of 0.05%,TCR to ± 1ppm/°C
FEATURES
Vishay Foil Resistors (VFR) introduces a new line of Ultra
Precision Bulk Metal® Z1-Foil technology: hybrid chip
resistors, connected using gold wire bonding. The HTHG
series features two different layouts of chip designs
according to the sizes (see figure 3 and table 4). These new
types of hybrid chips were especially designed for high
temperature applications up to + 240°C (1) (working power: to
150mW at + 220°C), and include gold plated terminals.
The HTHG series is available in any value within the
specified resistance range. VFR's application engineering
department is available to advise and make
recommendations.
For non-standard technical requirements and special
applications, please contact foil@vishaypg.com.
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE (1)(2)
(- 55 °C to + 220 °C, + 25 °C Ref.)
RESISTANCE
VALUE
()
100to 125K
50to < 100
25to < 50
10to < 25
5to 10
TOLERANCE
(%)
± 0.02
± 0.05
± 0.1
± 0.25
± 0.5
TCR Typical
(ppm/°C)
± 2.5
FIGURE 1 - POWER DERATING CURVE
Percent of Rated Power
INTRODUCTION
Temperature coefficient of resistance (TCR):
±1 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C ref.)
±2.5 ppm/°C typical (- 55 °C to + 220 °C, + 25 °C
ref.)
Resistance range: 5 to 125 k(for higher
or lower values, please contact VFR's application
engineering department)
Resistance tolerance: to ± 0.02 %
Connection method: gold wire bonding
Working power: to 150mW at + 220°C
Long term stability: to ± 0.05 % at + 240°C for 2000h, no
power
Load life stability: to 0.05% at + 220°C for 2000h at
working power
Vishay Foil resistors are not restricted to standard values;
specific "as required" values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
Electrostatic discharge (ESD) at least to 25 kV
Non inductive, non capacitive design
Rise time: 1 ns effectively no ringing
Current noise: 0.010 µV (RMS)/Volt of applied voltage
(< - 40 dB)
Voltage coefficient: < 0.1 ppm/V
Non inductive: < 0.08 µH
Non hot spot design
Terminal finish available: gold plated (lead (Pb)-free alloy)
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishaypg.com
+70°C
-55°C
100
75
50
25
0
-75
-50
-25
0
+25
+50
+240
+75 +100 +125 +150 +175 +200 +225 +250
Ambient Temperature (°C)
Notes
Performances obtained with ceramic PCB.
For tighter performances or non-standard values up to 150 k,
please contact VFR's application engineering department by
sending an e-mail to the address in the footer below.
(1)
(2)
* HTHG was previously named HTH
Document Number: 63221
Revision: 13-Dec-12
For any questions, contact: foil@vishaypg.com
www.vishayfoilresistors.com
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