SFX
www.vishay.com
Vishay Electro-Films
Thin Film, Top-Contact Megohm Resistor
FEATURES
• Wire bondable
• Megohm resistance range: 0.51 M to 20 M
• Chip size: 0.040 inches square standard, 0.030 inches
square and 0.055 inches square optional
• Case: 0404
Product may not be to scale
• Reduced hybrid size
• Resistor material: Tantalum nitride, self-passivating
• Oxidized silicon substrate
The SFX series resistor chips extends the range of available
resistance to 20 M These offer one of the best
combinations of small size and high value available.
The SFXs are manufactured using Vishay Electro-Films (EFI)
sophisticated thin film equipment and manufacturing
technology. The SFXs are 100 % electrically tested and
visually inspected to MIL-STD-883, method 2032 class H or
class K.
APPLICATIONS
The SFX series megohm resistor chips are designed for use
in hybrid packages which require small-size high-value
resistors.
TEMPERATURE COEFFICIENT OF RESISTANCE, VALUES, AND TOLERANCES
PARAMETER
Total Resistance Range
Standard Tolerances
TCR
Tightest Standard Tolerance Available
0.1 %
± 50 ppm/°C
± 100 ppm/°C
± 250 ppm/°C
± 350 ppm/°C
0.5 %
VALUE
360K to 30M
± 0.1, ± 0.5
± 50, ± 100, ± 250, ± 350
SIZE
(in inches)
0.030 x 0.030
0.040 x 0.040
0.055 x 0.055
MIN.
360 k
510 k
1 M
UNIT
%
ppm/°C
MAX.
10 M
20 M
30 M
360 kΩ
2 MΩ 3.3 MΩ 10 MΩ
30 MΩ
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Noise, MIL-STD-202, Method 308
Moisture Resistance, MIL-STD-202
Method 106, (Passivated only)
Stability, 1000 h, + 125 °C, 10 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
- 12 typ.
± 0.5 max.
R/R
± 1.0 max.
R/R
- 55 to + 125
± 0.25 max.
R/R
± 0.5 max.
R/R
400
10
12
min.
100 max.
0.020
± 0.25 max.
R/R
UNIT
dB
%
%
°C
%
%
V
V
W
%
Revision: 25-Jul-11
1
For technical questions, contact:
efi@vishay.com
Document Number: 61018
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
SFX
www.vishay.com
Vishay Electro-Films
DIMENSIONS
in inches (millimeters)
A
0.005
A
± 0.002 (± 0.05)
B
± 0.002 (± 0.05)
0.030 (0.76)
B
0.027 (0.69)
0.040 (1.01)
0.005
0.037 (0.94)
0.055 (1.40)
0.052 (1.32)
SCHEMATIC
MECHANICAL SPECIFICATIONS
PARAMETER
Chip Size
Chip Thickness
Chip Substrate Material
Resistor Material
Bonding Pad Size
Number of Pads
Pad Material
Backing
VALUE
Per table above
0.010" ± 0.002" (0.254 mm ± 0.050 mm)
Oxidized silicon, 10 kÅ minimum SiO
2
Tantalum nitride, self-passivating
0.005" x 0.005" (0.127 mm x 0.127 mm)
2
10 kÅ minimum aluminum (gold pads available)
None, lapped semiconductor silicon (gold back available)
GLOBAL PART NUMBER INFORMATION
Global Part Number: SFX25003KR4GGKWS
Global Part Number Description: SFX 2.5M 10 % 0 ppm/°C/- 250 ppm/°C 40 Au Au K WS
S
F
X
2
5
0
0
3
K
R
4
G
G
K
W
S
MODEL
SFX
High
value
TaN on
silicon
RESISTANCE
The first
4 digits are
significant
figures of
resistance
RESISTANCE
MULTIPLIER
CODE
2
= 100
3
= 1000
4
= 10 000
TOLERANCE
CODE
B
= 0.1 %
C
= 0.25 %
D
= 0.5 %
F
= 1.0 %
G
= 2.0 %
J
= 5.0 %
K
= 10.0 %
TCR
(ppm/°C)
SIZE
TERMINATION
G
= Au
A
= Al
BACK
METAL
VISUAL
CLASS
PACKAGING
CODE
E
= ± 25
3
= 30 x 30
C
= ± 50
4
= 40 x 40
K
= ± 100
5
= 55 x 55
M
= ± 250
W
= ± 350
I
= 0/- 200
R
= 0/- 250
P
= 0/- 350
G
= Au
H
= Class H
WS
=
N
= None
K
= Class K Waffle pack,
100 min,
1 mult
Revision: 25-Jul-11
2
For technical questions, contact:
efi@vishay.com
Document Number: 61018
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
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please
contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
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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
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