BCR
Vishay Electro-Films
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
• Resistor material: Tantalum nitride, self-passivating
• Moisture resistant
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.
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
PROCESS CODE
2 % ꢀ %
1 % 0.2 % 0.ꢀ %
0.1 %
CLASS H*
CLASS K*
056
ꢀ2 ꢁꢁmꢂ/C
010
20 ꢁꢁmꢂ/C
002
061
100 ꢁꢁmꢂ/C
027
059
ꢀ20 ꢁꢁmꢂ/C
008
052
*MIL-PRF-38534 inspection criteria
360 kΩ
1 MΩ
6ꢀ0 kΩ
ꢀ00 kΩ
10 Ω ꢀ0 Ω 20 Ω 100 Ω ꢀ00 Ω 1 kΩ
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Noise, MIL-STD-ꢀ0ꢀ, Method 308
100 Ω - ꢀ20 kΩ
< 100 Ω or > ꢀ21 kΩ
- 35 dB typ.
- 20 dB typ.
Moisture resistance, MIL-STD-ꢀ0ꢀ
Method 106
0.5 % max. ΔR/R
Stability, 1000 h, + 1ꢀ2 /C, 1ꢀ2 mW
1.0 % max. ΔR/R
Oꢁerating Temꢁerature Range
- 55 °C to + 125 °C
Thermal Shock, MIL-STD-ꢀ0ꢀ,
Method 107, Test Condition F
0.25 % max. ΔR/R
High Temꢁerature Exꢁosure, + 120 /C, 100 h
Dielectric Voltage Breakdown
0.5 % max. ΔR/R
200 V
Insulation Resistance
1012 min.
Oꢁerating Voltage
75 V max.
DC Power Rating at + 70 /C (Derated to Zero at + 172 /C)
2 x Rated Power Short-Time Overload, + ꢀ2 /C, 2 s
250 mW
0.25 % max. ΔR/R
www.vishay.com
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For technical questions, contact: efi@vishay.com
Document Number: 61023
Revision: 12-Mar-08