SFN
www.vishay.com
Vishay Electro-Films
NiCr Thin Film, Top-Contact Resistor
FEATURES
•
•
•
•
•
•
•
•
Wire bondable
Chip size: 0.020" square
Case: 0202
Resistance range: 20
Ω
to 510 kΩ
Resistor material: Nichrome
Oxidized silicon substrate
125 mW power
Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
Product may not be to scale
The SFN series resistor chips offer a combination of
nichrome stability, good power rating and small size.
The SFNs are manufactured using Vishay Electro-Films (EFI)
sophisticated thin film equipment and manufacturing
technology. The SFNs are 100 % electrically tested and
visually inspected to MIL-STD-883, method 2032, class H or
class K.
APPLICATIONS
Vishay EFI SFN 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
20 to 510K
± 0.1
± 10, ± 25, ± 50, ± 100, ± 250
UNIT
Ω
%
ppm/°C
Tightest Standard Tolerance Available
0.1 %
± 10 ppm/°C
± 25 ppm/°C
± 50 ppm/°C
± 100 ppm/°C
20
Ω
50
Ω
100
Ω
1 kΩ
510 kΩ
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Noise, MIL-STD-202, Method 308
100
Ω
to 250 kΩ
< 100
Ω
or > 251 kΩ
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
Revision: 25-Mar-2021
VALUE
-35 typ.
-20 typ.
± 0.25 max.
ΔR/R
-55 to +125
± 0.25 max.
ΔR/R
± 0.5 max.
ΔR/R
200
10
12
min.
100 max.
0.125
± 0.25 max.
ΔR/R
UNIT
dB
%
°C
%
%
V
Ω
V
W
%
Document Number: 61025
1
For technical questions, contact:
efi@vishay.com
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
SFN
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
0.004
TYPICAL RANGE
20
:
to 35
:
TYPICAL RANGE
20
:
to 55
:
TYPICAL RANGE
56
:
to 7.4 k:
TYPICAL RANGE
7.5 k: to 510 k:
SCHEMATIC
MECHANICAL SPECIFICATIONS
PARAMETER
Chip Thickness
Chip Size
Chip Substrate Material
Resistor Material
Bonding Pad Size
Number of Pads
Pad Material
Backing
VALUE
0.010" ± 0.002" (0.254 mm ± 0.05 mm)
0.020" x 0.020" ± 0.003" (0.51 mm x 0.51 mm ± 0.076 mm)
Oxidized silicon, 10 kÅ minimum SiO
2
Nichrome (passivation optional)
0.004" x 0.004" (0.10 mm x 0.10 mm)
2
15 kÅ minimum gold (Al optional)
None, lapped semiconductor silicon (Au back optional)
GLOBAL PART NUMBER INFORMATION
Global Part Number: SFN50000FKANHWS
Global Part Number Description: SFN 5K 1 % 100 ppm Al None H WS
S
F
N
5
0
0
0
0
F
K
A
N
H
W
S
MODEL
SFN
20 x 20
size
NiCr on
silicon
RESISTANCE
First 4 digits are
significant figures
of resistance
RESISTANCE
MULTIPLIER
CODE
B
= 0.01
A
= 0.1
0
=1
1
= 10
2
= 100
3
= 1000
TOLERANCE
CODE
(%)
B
= 0.1
C
= 0.25
D
= 0.5
F
= 1.0
G
= 2.0
J
= 5.0
K
= 10
TCR
(ppm/°C)
B
= ± 10
E
= ± 25
C
= ± 50
K
= ± 100
M
= ± 250
TERMINATION
G
= Au
A
= Al
BACK
METAL
G
= Au
N
= none
VISUAL
CLASS
H
= class H
K
= class K
PACKAGING
CODE
WS
= waffle pack
100 min., 1 mult.
FW
= full wafer
Revision: 25-Mar-2021
Document Number: 61025
2
For technical questions, contact:
efi@vishay.com
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
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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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Revision: 01-Jan-2021
1
Document Number: 91000
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