SC7, SCB
Vishay Electro-Films
Thin Film Resistors on Silicon, User Trimmable
www.vishay.com For technical questions, contact: efi@vishay.com Document Number: 61011
86 Revision: 11-Mar-08
CHIP
RESISTORS
The SC7 and SCB series resistor chips offer a combination
of nichrome user trimmability as a single resistor or as a ratio
trim while maintaining the excellent TCR tracking
characteristics of two resistors on the same chip.
The SC7 and SCBs are manufactured using Vishay Electro-
Films (EFI) sophisticated thin film equipment and
manufacturing technology. The SC7 and SCBs are 100 %
electrically tested and visually inspected to MIL-STD-883.
FEATURES
•Wire bondable
•Chip sizes
SC7 - 0.030 inches square
SCB - 0.050 inches square
•Resistance range RT: 100 Ω to 20 kΩ for SC7
Resistance range RT: 100 Ω to 50 kΩ for SCB
•Silicon substrate
•Power: 250 or 400 mW capability
•Resistor material: Nichrome
•User trimmable
APPLICATIONS
Vishay EFI SC7 and SCB chip resistors have excellent power dissipation capability and are ideally suited for prototyping.
Typical application areas are:
•Amplifiers
•Oscillators
•Attenuators
•Couplers
•Filters
Recommended for hermetic environments where die is not exposed to moisture
Note:
• Performance characteristics are not guaranteed once user trimmed
Product may not
be to scale
TEMPERATURE COEFFICIENT OF RESISTANCE, VALUES AND TOLERANCES
PROCESS CODE
SC7 SCB
CLASS H* CLASS K* CLASS H* CLASS K*
220 224 220 224
221 225 221 225
222 226 222 226
*MIL-PRF-38534 inspection criteria
RA user trimmable 50 % above
RT value specified in P/N
0.1 %
Tightest Standard Tolerance Available
± 100 ppm/°C
± 50 ppm/°C
200 Ω
100 Ω50 kΩ
± 25 ppm/°C
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Noise, MIL-STD-202, Method 308 - 20 dB typ.
Stability, 1000 h, + 125 °C at Rated Power ± 0.2 % max. ΔR/R
Operating Temperature Range- 55 °C to + 125 °C
Thermal Shock, MIL-STD-202,
Method 107, Test Condition F ± 0.25 % max. ΔR/R
High Temperature Exposure, + 150 °C, 100 h ± 0.25 % max. ΔR/R
Dielectric Voltage Breakdown 200 V
Insulation Resistance 1012 min.
Operating Voltage100 V max.
DC Power Rating at 70 °C
Derated to Zero at 150 °C
250 mW max. (0.030 inches)
400 mW max. (0.050 inches)
5 x Rated Power Short-Time Overload, + 25 °C, 5 s + 0.25 % max. ΔR/R
Document Number: 61011 For technical questions, contact: efi@vishay.com www.vishay.com
Revision: 11-Mar-08 87
SC7, SCB
Thin Film Resistors on Silicon, User Trimmable
Vishay Electro-Films
CHIP
RESISTORS
DIMENSIONS in inches
SCHEMATIC
Options: Gold back for solder die attach
Consult Application Engineer
0.030
0.005
0.030
0.016
0.005
SC7
0.005
0.050
0.005
0.050
0.035
0.0075
SCB
0.005
R
A
R
B
R
T =
R
A +
R
B
MECHANICAL SPECIFICATIONS in inches
PARAMETER
Chip Size 0.030 x 0.030 ± 0.003 (0.76 x 0.76 ± 0.076 mm)
0.050 x 0.050 ± 0.003 (1.27 x 1.27 ± 0.076 mm)
Chip Thickness 0.010 ± 0.002 (0.25 ± 0.05 mm)
Chip Substrate Material Oxidized silicon, 10 kÅ minimum SiO2
Resistor Material Nichrome
Bonding Pad Size 0.005 x 0.005 (0.127 x 0.127 mm) minimum
Number of Pads 6
Pad Material 15 kÅ minimum gold standard
Backing None, lapped semiconductor silicon
ORDERING INFORMATION
Example: 100 % visualled, RT = 500, ± 10 %, ± 50 ppm/°C TCR, RA user trim gold pads, class H visual inspection
Standard user trim versions will be supplied with RA untrimmed
For custom RA, RB combinations consult Application Engineer
W
INSPECTION/
PACK AGING
W = 100 % visually inspected
parts in matrix MIL-STD-883
X = Sample, commercial visually
inspected parts loaded in matrix
trays (4 % AQL)
SC7
PRODUCT
FAMILY
SC7
SCB
221
PROCESS
CODE
See Process Code
table
5000
RESISTANCE
VALUE
Use first 4 digits
significant digits of the
resistance (RT)
A
MULTIPLIER
CODE
B = 0.01
A = 0.1
0 = 1
1 = 10
K
TOLERANCE
CODE
B = 0.1 %
D = 0.5 %
F = 1.0 %
G = 2.0 %
H = 2.5 %
J = 5.0 %
K = 10 %
M = 20 %
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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All product specifications and data are subject to change without notice.
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therein, which apply to these products.
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