QFN
Vishay Electro-Films
NiCr Thin Film, Top-Contact Resistor
CHIP
RESISTORS
FEATURES
•
Wire bondable
Product may not
be to scale
•
Chip size: 0.020 inches square
•
Resistance range: 10
Ω
to 510 kΩ
•
Resistor material: Nichrome
•
Quartz substrate: < 0.1 pF shunt capacitance
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.
•
Power: 25 mW
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
Tightest Standard Tolerance Available
1%
0.5 %
0.1 %
± 25 ppm/°C
± 50 ppm/°C
± 100 ppm/°C
± 250 ppm/°C
PROCESS CODE
CLASS H*
203
201
202
200
Gold terminations
*MIL-PRF-38534 inspection criteria
CLASS K*
207
205
206
204
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
Ω
- 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
- 35 dB typ.
- 20 dB typ.
± 0.1 % max.
ΔR/R
- 55 °C to + 125 °C
± 0.25 % max.
ΔR/R
± 0.5 % max.
ΔR/R
200 V
10
12
min.
100 V max.
25 mW
± 0.25 % max.
ΔR/R
www.vishay.com
50
For technical questions, contact: efi@vishay.com
Document Number: 61079
Revision: 14-Mar-08
QFN
NiCr Thin Film, Top-Contact Resistor
Vishay Electro-Films
DIMENSIONS
in inches
0.014
0.008
0.020
CHIP
RESISTORS
0.004
0.004
0.004
0.020
0.004
TYPICAL RANGE
10
Ω
- 55
Ω
TYPICAL RANGE
56
Ω
- 7.4 kΩ
TYPICAL RANGE
7.5 kΩ - 510 kΩ
SCHEMATIC
MECHANICAL SPECIFICATIONS
in inches
PARAMETER
Chip Size
Chip Thickness
Chip substrate Material
Resistor Material
Bonding Pad Size
Number of Pads
Pad Material
Backing
Options:
Aluminum bonding pads, 10 kÅ minimum thickness
Consult Applications Engineer
0.020 x 0.020 ± 0.003 (0.51 x 0.51 ± 0.05 mm)
0.010 ± 0.002 (0.254 ± 0.05 mm)
Quartz
Nichrome (passivation optional)
0.004 x 0.004 (0.10 x 0.10 mm)
2
15 kÅ minimum gold
None, lapped quartz
ORDERING INFORMATION
Example: 100 % visual, 10 kΩ, ± 1 %, ± 50 ppm/°C TCR, gold pads, class H visual inspection
W
INSPECTION/
PACKAGING
W = 100 % visually inspected
parts in matrix tray per
MIL-STD-883
X = Sample, commercial visually
inspected parts loaded in matrix
trays (4 % AQL)
Available alternatives:
Aluminum pads or gold back
Passivation (thermal set plastic)
QFN
PRODUCT
FAMILY
202
PROCESS
CODE
See Process Code
table
1000
RESISTANCE
VALUE
Use the first 4 digits
significant digits of the
resistance
1
MULTIPLIER
CODE
B
= 0.01
A
= 0.1
0
=1
1
= 10
2
= 100
3
= 1000
4
= 10 000
F
TOLERANCE
CODE
B
= 0.1 %
C
= 0.2 %
D
= 0.5 %
F
= 1.0 %
G
= 2.0 %
H
= 2.5 %
J
= 5.0 %
K
= 10 %
Document Number: 61079
Revision: 14-Mar-08
For technical questions, contact: efi@vishay.com
www.vishay.com
51
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
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 herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay 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.
Document Number: 91000
Revision: 18-Jul-08
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1
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