BCR
Vishay Electro-Films
CHIP
RESISTORS
Thin Film, Back-Contact Resistor
FEATURES
• Wire bondable
Product may not
be to scale
• Only one wire bond required
• Small size: 0.020 inches square.
• Resistance range: 10 Ω to 1 MΩ
• Oxidized silicon substrate for good power dissipation
The Back Contact Resistor (BCR) series single-value
back-contact resistor chip is one of the smallest chips available.
The BCR requires only one wire bond thus saving hybrid space.
• Resistor material: Tantalum nitride, self-passivating
• Moisture resistant
The BCRs are manufactured using Vishay Electro-Films
(EFI) sophisticated thin film equipment and manufacturing
technology. The BCRs are 100 % electrically tested and
visually inspected to MIL-STD-883.
APPLICATIONS
Vishay EFI BCR resistor chips are widely used in hybrid packages where space is limited. The bottom connection is made by
attaching the back of the chip to the substrate either eutectically or with conductive epoxy. The single wire bond is made to the
notched pad on the top of the chip. (The other rectangular pad on the top of the chip is a via hole, a low-ohmic contact connecting
the resistor to the bottom of the chip.)
TEMPERATURE COEFFICIENT OF RESISTANCE, VALUES AND TOLERANCES
Tightest Standard Tolerance Available
5%
2%
1%
0.5 % 0.2 %
PROCESS CODE
0.1 %
CLASS H*
CLASS K*
± 25 ppm/°C
010
056
± 50 ppm/°C
002
061
027
059
008
052
± 100 ppm/°C
± 250 ppm/°C
10 Ω
20 Ω 50 Ω
360 kΩ
1 MΩ
200 kΩ
620 kΩ
100 Ω 200 Ω 1 kΩ
*MIL-PRF-38534 inspection criteria
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.
Moisture resistance, MIL-STD-202
Method 106
± 0.5 % max. ΔR/R
Stability, 1000 h, + 125 °C, 125 mW
± 1.0 % 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
Insulation Resistance
1012 min.
Operating Voltage
75 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
54
For technical questions, contact: efi@vishay.com
250 mW
± 0.25 % max. ΔR/R
Document Number: 61023
Revision: 12-Mar-08
