Z Series (Z Foil)
Ultra High Precision Z Foil Though-Hole Resistor
with TCR of ±±0.2 pm/Cꢀ Tolerance of ±±0±±ꢁ5 (ꢁ±2 p)ꢀ
Load Life Stability of ±±0±±ꢁ5
FEATURES
• Tep erature coefficient of resistance (TCR):
0.2 ppm/°C typical (–55°C to +125°C, +25°C ref.)
(see table 1)
• Rated power: to 1 W at +125°C (see table 2)
• Resistance tolerance: to 0.005% (50 ppm)
• Load life stability: 0.005% at 70°C, 2000 h or
0.015% at 70°C, 10000 h (see table 4)
• Resistance range: 5 Ω to 600 kΩ
• Bulk Metal® 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)
• Total accumulated change in resistance value over life
or Total Error Budget <0.1% (or tighter with PMO)**
• Electrostatic Discharge (ESD): at least to 25 kV
• Non-inductive, non-capacitive design
• Rise time: 1 ns effectively no ringing
• Current noise: ≤0.010 μVRMS/V of applied voltage
(<–40 dB)
• Thermal EMF: 0.05 μV/°C typical
• Voltage coefficient: <3 ppm/V
• Low inductance: <0.08 μH typical
• Thermal stabilization time <1 s (to reach within 10 ppm
of steady state value)
The stability of a resistor depends primarily on its history
of exposures to temperature. Stability is affected by:
1. Reversible changes in the ambient temperature
and heat from adjacent components (defined by the
Temperature Coefficient of Resistance, or TCR)
2. Short-term steady-state self-heating (defined by
Power TCR or PCR)
3. Irreversible destabilizing shock of suddenly-applied
power
4. Long-term exposure to applied power (load-life
stability)
In very high-precision resistors, these effects must be
taken into account to achieve high stability with changes
in load (Joule Effect) and ambient temperature.
Vishay Foil Resistors’ Z Foil technology provides an order
of magnitude reduction in the Bulk Metal Foil element’s
sensitivity to temperature changes – both external and
internal. This technology provides TCR of 0.2 ppm/°C
typical (military range: –55°C to +125°C, +25°C ref), and a
PCR of 5 ppm at rated power.
• Pattern design minimizing hot spots
• Terminal finish: lead (Pb)-free or tin/lead alloy
• Matched sets are available per request
(TCR tracking: to 0.5 ppm/°C)
• Military established reliability “R” level resistor available
(see resistor model RNC90Z)
In order to take full advantage of this TCR improvement,
it is necessary to take into account the differences in
the resistor’s response to each of the above-mentioned
effects. The Z series has been developed to successfully
deal with these factors.
• Screen/test flow as modified from S-311-P813
proposed by NASA available
(see datasheet for resistor model 303143)
• Prototype quantities available please contact
foil@vpgsensors.com
* This datasheet provides information about parts that are
RoHS-compliant and/or parts that are non-RoHS-compliant.
For example, parts with lead (Pb) terminations are not
RoHS compliant. Please see the information/tables in this
datasheet for details.
INTRODUCTION
** See PMO page 5
The Bulk Metal® Foil resistor is based on a special
thermo-metalic stress concept wherein a proprietary bulk
metal cold rolled foil is cemented to a ceramic substrate.
It is then photoetched into a resistive pattern. Then it
is laser adjusted to any desired value and tolerance.
Because the metals used are not drawn, wound or
mistreated in any way during manufacturing process,
the Bulk Metal Foil resistor maintains all its design,
physical and electrical characteristics while winding
of wire or sputtering does not. Z Foil resistors achieve
maximum stability and near-zero TCR. These performance
characteristics are built-in for every unit, and do not
rely on screening or other artificial means for uniform
performance.
TABLE 1 – TYPICAL TCR AND MAX. SPREAD
(–55°C to +125°C, +25°C ref.)
STANDARD
TOLERANCE
TYPICAL TCR AND
MAX0 SPREAD ( pm/C)
VALUE
100 Ω to 600 kΩ
80 Ω to <100 Ω
50 Ω to <80 Ω
25 Ω to <50 Ω
10 Ω to <25 Ω
5 Ω to <10 Ω
0.005%
0.005%
0.01%
0.01%
0.02%
0.05%
0.2 0.6
0.2 0.8
0.2 1.0
0.2 1.3
0.2 1.6
0.2 2.3
Document No.: 63187
Revision: 01-Nov-2016
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
1
5秒后页面跳转
NTC热敏电阻与PTC热敏电阻的应用原理及应用范围
GTO与普通晶闸管相比为什么可以自关断？为什么普通晶闸管不能呢？从GTO原理、应用范围带你了解原因及推荐型号
LF353数据手册解读：特性、应用、封装、引脚说明、电气参数及替换型号推荐
A4950资料手册解读：特性、应用、封装、引脚功能、电气参数及代换型号
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
