QFN
Vishay Electro-Films
CHIP
RESISTORS
NiCr Thin Film, Top-Contact Resistor
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.
• Power: 25 mW
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.
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 %
PROCESS CODE
0.1 %
CLASS H*
203
201
202
200
± 25 ppm/°C
± 50 ppm/°C
± 100 ppm/°C
± 250 ppm/°C
CLASS K*
207
205
206
204
Gold terminations
*MIL-PRF-38534 inspection criteria
1Ω
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
- 35 dB typ.
- 20 dB typ.
Stability, 1000 h, + 125 °C, 50 mW
± 0.1 % 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
± 0.5 % max. ΔR/R
Dielectric Voltage Breakdown
200 V
1012 min.
Insulation Resistance
Operating Voltage
100 V max.
DC Power Rating at + 70 °C (Derated to Zero at + 175 °C)
5 x Rated Power Short-Time Overload, + 25 °C, 5 s
www.vishay.com
50
For technical questions, contact: efi@vishay.com
25 mW
± 0.25 % max. ΔR/R
Document Number: 61079
Revision: 14-Mar-08
