QFN
www.vishay.com
Vishay Electro-Films
NiCr Thin Film, Top-Contact Resistor
FEATURES
• Wire bondable
• Chip size: 0.020 inches square
• Case: 0202
• Resistance range: 1
to 510 k
• Resistor material: Nichrome
Product may not be to scale
• Quartz substrate: < 0.1 pF shunt capacitance
• Power: 25 mW
The QFN series nichrome on quartz resistor chips offer a
combination of nichrome stability, excellent frequency
response and small size.
The QFNs are manufactured using Vishay Electro-Films (EFI)
sophisticated thin film equipment and manufacturing
technology. The QFNs are 100 % electrically tested and
visually inspected to MIL-STD-883, method 2032 class H
or K.
APPLICATIONS
Vishay EFI QFN top-contact resistor chips are widely used
in hybrid packages where space is limited. Designed with
capacity to handle substantial power loads, they also have
the benefit of nichrome stability.
Recommended for hermetic environments where die is not
exposed to moisture.
TEMPERATURE COEFFICIENT OF RESISTANCE, VALUES, AND TOLERANCES
PARAMETER
Total Resistance Range
Standard Tolerances
TCR
VALUE
1 to 510K
± 0.1, ± 0.5, ± 1
± 25, ± 50, ± 100, ± 250
UNIT
%
ppm/°C
Tightest Standard Tolerance Available
1%
0.5 %
0.1 %
± 25 ppm/°C
± 50 ppm/°C
± 100 ppm/°C
± 250 ppm/°C
1
Ω
10
Ω
30
Ω
100
Ω
200 kΩ 360 kΩ 510 kΩ
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Noise, MIL-STD-202, Method 308
100
to 250 k
< 100
or > 251 k
Stability, 1000 h, + 125 °C, 50 mW
Operating Temperature Range
Thermal Shock, MIL-STD-202, Method 107, Test Condition F
High Temperature Exposure, + 150 °C, 100 h
Dielectric Voltage Breakdown
Insulation Resistance
Operating Voltage
DC Power Rating at + 70 °C (Derated to zero at + 175 °C)
5 x Rated Power Short-Time Overload, + 25 °C, 5 s
VALUE
- 35 typ.
- 20 typ.
± 0.1 % max.
R/R
- 55 to + 125
± 0.25 max.
R/R
± 0.5 max.
R/R
200
10
12
min.
100 max.
0.025
± 0.25 max.
R/R
UNIT
dB
%
°C
%
%
V
V
W
%
Revision: 17-Aug-11
1
For technical questions, contact:
efi@vishay.com
Document Number: 61079
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
QFN
www.vishay.com
DIMENSIONS
in inches
0.014
0.008
0.020
Vishay Electro-Films
0.004
0.004
0.004
0.020
0.004
TYPICAL RANGE
10
Ω
to 55
Ω
TYPICAL RANGE
56
Ω
to 7.4 kΩ
TYPICAL RANGE
7.5 kΩ to 510 kΩ
SCHEMATIC
MECHANICAL SPECIFICATIONS
PARAMETER
Chip Size
Chip Thickness
Chip Substrate Material
Resistor Material
Bonding Pad size
Number of Pads
Pad Material
Backing
VALUE
0.020" x 0.020" ± 0.003" (0.51 mm x 0.51 mm ± 0.05 mm)
0.010" ± 0.002" (0.254 mm ± 0.05 mm)
Quartz
Nichrome (passivation optional)
0.004" x 0.004" (0.10 mm x 0.10 mm)
2
15 kÅ minimum gold (Al optional)
None, lapped quartz (Au optional)
GLOBAL PART NUMBER INFORMATION
Global Part Number: QFN50000FKANHWS
Global Part Number Description: QFN 5K 1 % 100 ppm/°C Al None H WS
Q
F
N
5
0
0
TOLERANCE
CODE
(%)
B
= 0.1
C
= 0.25
D
= 0.5
F
= 1.0
G
= 2.0
J
= 5.0
K
= 10.0
0
0
F
K
A
N
H
W
S
MODEL
QFN
20 x 20
size
NiCr on
Quartz
RESISTANCE
First 4 digits
are significant
figures of
resistance
RESISTANCE
MULTIPLIER
CODE
C
= 0.001
B
= 0.01
A
= 0.1
0
=1
1
= 10
2
= 100
3
= 1000
TCR
(ppm/°C)
E
= ± 25
C
= ± 50
K
= ± 100
M
= ± 250
TERMINATION
G
= Gold
A
= Aluminum
BACK
METAL
G
= Gold
N
= None
VISUAL
CLASS
H
= Class H
K
= Class K
PACKAGING
CODE
WS
=
Waffle pack
100 min., 1 mult
Revision: 17-Aug-11
2
For technical questions, contact:
efi@vishay.com
Document Number: 61079
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay 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.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. 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. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
Programming Basics
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