FRSH Series (Z1 Foil Technology)
0603, 0805, 1206, 1506, 2010, 2512
Ultra High Precision Foil Wraparound Surface Mount Chip Resistor with
Extended Pads for High Power/High Temperature Applications
up to +225°C
FEATURES
Temperature coefficient of resistance (TCR):
±2.5 ppm/°C typical (- 55 °C to + 200 °C, + 25 °C
ref.)
Resistance range: 10 to 125 k(for higher
and lower values, please contact VFR's
application engineering department)
Resistance tolerance: to ± 0.02 %
Working power
(1)
: to 1200mW at + 70 °C;
to 330mW at + 200 °C
term stability: to ± 0.05 % at + 225 °C for 2000h,
Long
no power
Load life stability: to ± 0.05 % typical at + 200 °C for
2000h (working power)
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)
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 finishes available:
High temperature solder
Matched sets are available on request
Prototype quantities available, please contact
foil@vpgsensors.com
INTRODUCTION
Vishay Foil Resistors (VFR) introduces a new line of Ultra
Precision Bulk Metal
®
Z1 Foil Technology: wraparound
surface mount chip resistors with extended pads for high
temperature up to + 225 °C
(1)
(working power: to 330mW at
+200 °C).
The new extended pad designs also exhibit better heat
dissipation, thus enabling higher power usage (Working
Power: to 1200mW at + 70°C
(1)
). The FRSH has a full
wraparound termination that ensures safe handling during
the manufacturing process, as well as providing stability
during multiple thermal cyclings.
The FRSH 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@vpgsensors.com.
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
(1)(2)
(- 55 °C to + 200 °C, + 25 °C Ref.)
RESISTANCE
VALUE
()
100to 125K
50to < 100
25to < 50
10 to < 25
TOLERANCE
(%)
± 0.02
± 0.05
± 0.1
± 0.25
TCR Typical
(ppm/°C)
FIGURE 1 - POWER DERATING CURVE
Percent of Rated Power
-55°C
100
75
50
25
0
-75
+70°C
±2.5
Note
(1)
Performances obtained with ceramic PCB. See Table 2 for power
spec.
(2)
For tighter performances and 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.
-50
-25
0
+25
+50
+75 +100 +125 +150 +175 +200 +225 +250
Ambient Temperature (°C)
Document Number: 63211
Revision: 27-Oct-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
1
FRSH Series (Z1 Foil Technology)
0603, 0805, 1206, 1506, 2010, 2512
HIGH TEMPERATURE PRODUCTS
Resistors are the passive building blocks of an electrical
circuit. They may be used for dropping the voltage, buffering
the surge when the circuit is turned on, providing feedback in
a monitoring loop, sensing current flow, etc. When the
application requires stability over time and load, initial
accuracy, minimal change with temperature for more than
200°C, resistance to moisture and a number of other
characteristics that will be described below, the Z1 Foil
Technology products have the attributes needed for such
application. Over the past few months, there has been
considerable growth in the demand for precise, stable and
reliable resistors that can operate in harsh environments
such as 85°C/85% RH and especially at high temperatures
to 200°C. Many analog circuits for industrial, military,
aerospace, medical, downhole, oil well and automotive
applications require passive components such as resistors to
have a minimal drift from their initial values when operating
above +175°C and in humid environments. In these
applications, the most important factor is the temperature
dependence and the end of life tolerance (which is part of the
stability) and to a lesser extent, the initial tolerance.
The Z1 Foil Technology resistors provide stabilities well
under the maximum allowable drift required by customers’
specifications through thousands of hours of operation under
harsh conditions, such as the extreme temperatures and
radiation-rich environments of downhole oil-well logging
applications, in the frigid arctic, under the sea or in deep
space. All Bulk Metal Foil resistors receive stabilization
processing, such as repetitive short term power overloads, to
assure reliable service through the unpredictable stresses of
extreme operation. Compared to Bulk Metal Foil, thick and
thin film resistor elements are produced with a
non-controllable material. Heat or mechanical stresses on
the resistive elements cause the particles forming the film to
expand. However, after these stresses are alleviated, the
articles in the film matrix do not return to the exact original
position. That degenerates their overall stability.
VPG's ultra high precision Bulk Metal Foil technology
includes many types of resistors with a variety of standard
configurations
that
can
withstand
unconventional
environmental conditions above and below the earth’s
surface using special post manufacturing operations
specially developed for this purpose. The stability of a
resistor depends primarily on its history of exposures to high
temperature. Stability is affected by:
1. Changes in the ambient temperature and heat from
adjacent components (defined by the temperature
coefficient of resistance, or TCR)
2. Destabilizing thermal shock of suddenly-applied power
(defined by the power coefficient of resistance, or PCR)
3. Long-term exposure to applied power (load-life stability)
4. Repetitive stresses from being switched on and off
In very high-precision resistors that need to operate in an
environment with temperatures above +175°C, these effects
must be taken into account to achieve high
stability with
changes in load (Joule Effect) and ambient temperature.
The Z1 Foil Technology provides an order of magnitude
reduction in the Bulk Metal Foil element’s sensitivity to
temperature changes—both external and internal—with
emphasis on long-term stability in high temperature
environments.
In order to take full advantage of the low TCR and longterm
stability improvement, it is necessary to take into account the
differences in the resistor’s response to each of the
above-mentioned effects. As described below, new products
have been developed to successfully deal with these factors.
For high temperature applications where stability and total
error budget is the main concern, the new generation of
Vishay Foil resistors offers the best resilience against time at
elevated temperature.
The Z1 Foil Technology allows us to produce
customer-oriented products designed to satisfy unique and
specific technical requirements. In addition to the special
chip stabilization under extreme environment conditions in
the production line, we offer additional specially oriented post
manufacturing operations (PMO) for high temperature
applications that require an even higher degree of reliability
and stability.
Electrostatic discharge (ESD) is another potential problem
that can cause unpredictable failure in high temperature
applications that increase the sensitivity of the resistors to
ESD.
ESD damage to electronic devices can occur at any point in
the device’s life cycle, from manufacturing to field service. A
resistor that is exposed to an ESD event may fail immediately
or may experience a latent defect. With latent defects,
premature failure can occur after the resistor is already
functioning in the finished product after an unpredictable
length of service. Bulk Metal Foil resistors are capable of
withstanding electrostatic discharges at least to 25 kV without
degradation.
The VFR Application Engineering department is always
available to assist with any special requirements you might
have. If you are not sure which resistor best suits your needs,
please do not hesitate to contact them for more information:
foil@vpgsensors.com
www.vishayfoilresistors.com
2
For any questions, contact
foil@vpgsensors.com
Document Number: 63211
Revision: 27-Oct-15
FRSH Series (Z1 Foil Technology)
0603, 0805, 1206, 1506, 2010, 2512
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
Interloop
capacitance
reduction
in series
Mutual
inductance
reduction
due to change
in current
direction
TABLE 2 - SPECIFICATIONS
(1)
CHIP
SIZE
0603
0805
1206
1506
2010
2512
RATED
POWER (mW)
at + 70°C
120
300
500
600
800
1200
WORKING
POWER (mW)
at + 200 °C*
33
83
140
167
220
330
RESISTANCE
RANGE
()
100 to 4K
10to 8K
10to 25K
10to 30K
10 to 70K
10to 125K
Current path
before trimming
Current path after trimming
Trimming process
removes this material
from shorting strip area
changing current path
and increasing
resistance
Foil shown in black, etched spaces in white
Note
*
Maximum working voltage for a given resistance value is calculated
using
V
=
P
R
.
Note
To acquire a precision resistance value, the Bulk Metal Foil
chip is trimmed by selectively removing built-in “shorting bars.”
To increase the resistance in known increments, marked
areas are cut, producing progressively smaller increases in
resistance. This method reduces the effect of “hot spots” and
improves the long-term stability of VFR resistors.
TABLE 3 - DIMENSIONS AND LAND PATTERN
in Inches (Millimeters)
Top
View
L
G
Z
D
W
± 0.005 (0.13)
0.032(0.81)
0.050 (1.27)
0.062 (1.57)
0.062 (1.57)
0.097 (2.46)
0.127 (3.23)
THICKNESS
MAXIMUM
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
D
± 0.005 (0.13)
0.011 (0.28)
0.015 (0.38)
0.035 (0.89)
0.047 (1.20)
0.071 (1.82)
0.095 (2.43)
Z
0.102 (2.59)
0.122 (3.10)
0.175 (4.45)
0.199 (5.05)
0.247 (6.27)
0.291 (7.39)
G
0.031 (0.78)
0.028 (0.71)
0.029 (0.74)
0.029 (0.74)
0.029 (0.74)
0.029 (0.74)
X
0.031 (0.78)
0.050 (1.27)
0.071 (1.80)
0.071 (1.80)
0.103 (2.62)
0.127 (3.23)
Recommended
Land
Pattern*
Footprint
X
T
Extended
Pads
CHIP
SIZE
0603
0805
1206
1506
2010
2512
L
± 0.005 (0.13)
0.063 (1.60)
0.080 (2.03)
0.126 (3.20)
0.150 (3.81)
0.198 (5.03)
0.249 (6.32)
W
* For 0603 and 0805 land pattern dimensions are per IPC-782
TABLE 4 - FRSH PERFORMANCE LIMITS (MIL-PRF-55342)
TEST
Short-Time Overload
High Temperature Exposure
Low Temperature Operation
Moisture Resistance
Stability under load, 200°C, 2,000 h
Load-Life Test, 70°C, 2,000 h
Thermal Shock
(1)
(2)
CONDITIONS
6.25 x P
nom.
+225°C, 2,000 h
–65°C, 45 min at rated power
Per MIL-PRF-55342 (p. 4.8.9)
Derated power (see table 2)
@ rated power (see table 2)
100 x (–65°C to + 200°C)
TYPICAL LIMIT %
(PPM)
±0.005% (50)
±0.05% (500)
±0.005% (50)
±0.01% (100)
±0.05% (500)
±0.005% (50)
±0.02% (200)
MAX LIMIT %
(PPM)
(1)(2)
±0.01% (100)
±1% (10,000)
±0.01% (100)
±0.01% (100)
±0.4% (4000)
±0.01% (100)
±0.3% (3000)
Notes
Performances obtained with ceramic PCB.
As shown + 0.01
to allow for measurement errors at low values.
Document Number: 63211
Revision: 27-Oct-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
3
FRSH Series (Z1 Foil Technology)
0603, 0805, 1206, 1506, 2010, 2512
FIGURE 3 - RECOMMENDED MOUNTING
Notes
(1)
IR and vapor phase reflow are recommended.
(2)
Avoid the use of cleaning agents which could attack epoxy resins, which form part
of the resistor construction
(3)
Vacuum pick up is recommended for handling
(4)
In case of using soldering iron, measurement precautions should be taken to avoid
damaging the resistor
TABLE 5 - GLOBAL PART NUMBER INFORMATION
(1)
NEW GLOBAL PART NUMBER: Y406412K7560Q0R (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
K
= k
CHARACTERISTICS
0
= standard (High Temperature solder)
1 to 999
= custom
Y
4
0
6
4
1
2
K
7
5
6
0
Q
0
R
PRODUCT CODE
4061
= FRSH 0603
4062
= FRSH 0805
4063
= FRSH 1206
4064
= FRSH 1506
4065
= FRSH 2010
4066
= FRSH 2512
RESISTANCE TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING
R
= tape and reel
W
= waffle pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y4064 12K7560 Q 0 R:
TYPE: FRSH1506
VALUES: 12.7560 k
ABSOLUTE TOLERANCE: 0.02 %
TERMINATION: Standard
PACKAGING: tape and reel
HISTORICAL PART NUMBER: FRSH1506 12K756 TCR2.5 Q B T (will continue to be used)
FRSH1506
MODEL
FRSH 0603
FRSH 0805
FRSH 1206
FRSH 1506
FRSH 2010
FRSH 2512
12K756
RESISTANCE
VALUE
12.756 k
TCR2.5
TCR
CHARACTERISTICS
Q
TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
B
TERMINATION
B
= Standard
T
PACKAGING
T
= tape and reel
W
= waffle pack
Note
(1)
For non-standard requests, please contact application engineering.
www.vishayfoilresistors.com
4
For any questions, contact
foil@vpgsensors.com
Document Number: 63211
Revision: 27-Oct-15
Legal Disclaimer Notice
Vishay Precision Group, Inc.
Disclaimer
ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.
Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “VPG”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in
any other disclosure relating to any product.
The product specifications do not expand or otherwise modify VPG’s terms and conditions of purchase, including but
not limited to, the warranty expressed therein.
VPG makes no warranty, representation or guarantee other than as set forth in the terms and conditions of purchase.
To the maximum extent permitted by applicable law, VPG disclaims (i) any and all liability arising out of the
application or use of any product, (ii) any and all liability, including without limitation special, consequential or
incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose,
non-infringement and merchantability.
Information provided in datasheets and/or specifications may vary from actual results in different applications and
performance may vary over time. Statements regarding the suitability of products for certain types of applications
are based on VPG’s knowledge of typical requirements that are often placed on VPG products. It is the customer’s
responsibility to validate that a particular product with the properties described in the product specification is suitable for
use in a particular application. You should ensure you have the current version of the relevant information by contacting
VPG prior to performing installation or use of the product, such as on our website at vpgsensors.com.
No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by any
conduct of VPG.
The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise
expressly indicated. Customers using or selling VPG products not expressly indicated for use in such applications do
so entirely at their own risk and agree to fully indemnify VPG for any damages arising or resulting from such use or sale.
Please contact authorized VPG personnel to obtain written terms and conditions regarding products designed for such
applications.
Product names and markings noted herein may be trademarks of their respective owners.
Copyright Vishay Precision Group, Inc., 2014. All rights reserved.
Document No.: 63999
Revision: 15-Jul-2014
www.vpgsensors.com
1
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