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Product Detailed Parameters
- Description：DIODE UHF VAR CAP 32V SOD882
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Capacitance @ Vr, F：2.25pF @ 28V, 1MHz
- Capacitance Ratio：10.9
- Capacitance Ratio Condition：C1/C28
- Voltage - Peak Reverse (Max)：32 V
- Diode Type：Single
- Q @ Vr, F：-
- Operating Temperature：-55°C ~ 125°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SOD-882
- Supplier Device Package：SOD2
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Overview
The BB179BLX,315 is a UHF variable capacitance diode fabricated using planar technology and encapsulated in an SOD882T ultra-small leadless plastic surface-mount device (SMD) package. It utilizes Direct Matching Assembly (DMA) to achieve excellent matching performance with a tolerance of 2%. Key electrical parameters include a capacitance at 28V reverse bias (Cd(28V)) of 2.1 pF and a typical capacitance ratio (Cd(1V)/Cd(28V)) of 9. The component exhibits low series resistance and high linearity, making it suitable for precision tuning applications in the UHF spectrum.
Feature Summary
- Excellent linearity characteristics
- High matching accuracy via DMA procedure
- Ultra-small leadless SMD footprint
Applications
- Voltage Controlled Oscillators (VCO)
- Electronic tuning in UHF television tuners
Procurement Notes
Verify the specific suffix '315' against official NXP documentation to confirm tape-and-reel orientation or packing details. Confirm current manufacturing status as some BB179 variants are discontinued. Ensure the SOD882T package matches the design requirements for reflow soldering profiles.
Selection Notes
Select this component when space-constrained designs require precise UHF tuning. The 2% DMA matching ensures consistent performance across production batches. Consider the 2.1 pF minimum capacitance and 9:1 ratio for oscillator bandwidth requirements. Verify compatibility with the target PCB layout for the SOD882T package.
Part Context
This part belongs to the NXP BB179 family of UHF variable capacitance diodes. While the standard BB179B uses the SOD523 package, the BLX variant specifically employs the SOD882T package. These diodes are designed for high-frequency applications requiring stable varactor characteristics.
Replacement Considerations
Direct substitutes within the same package may be limited due to the specific SOD882T form factor. Review similar parts like BB149 or BB159 for functional equivalence, but verify package dimensions and electrical parameters carefully before substitution.
