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NXP Semiconductors BB175X

BB175X Varactor Diode, 32V, 2.89pF, SOD-523

MPNBB175X
End of Life

NXP BB175X VHF varactor diode, single, 32 V peak reverse, 2.89pF @ 28V, 1MHz, capacitance ratio 22, SC-79/SOD-523 surface mount, -55°C to 125°C.

$0.62Ref. price · indicative, final on quote
NXP Semiconductors BB175X datasheet (PDF)
PackagingSC-79, SOD-523
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BB175X specifications
ParameterValue
Diode typeSingle
MountingSurface Mount
Voltage - peak reverse32 V
Operating temperature-55°C ~ 125°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
CaseSC-79, SOD-523
Capacitance ratio22
Capacitance @ vr,2.89pF @ 28V, 1MHz
Capacitance ratio conditionC1/C28

Product details

What the BB175X varactor diode does

The BB175X is a single VHF varactor diode for voltage-controlled tuning. At 28 V and 1 MHz it measures 2.89 pF, and the capacitance ratio from 1 V to 28 V is 22.

Voltage and temperature handling

Peak reverse voltage is rated at 32 V, so the tuning voltage should stay below that to avoid breakdown.

Housed in an SC-79 / SOD-523 surface-mount package, the BB175X is suited for compact RF front-ends. The supplier device package is SOD-523.

No end-of-life notice or last-time-buy is on record. For new designs, this part carries no immediate obsolescence risk.

Frequently asked questions

What is the capacitance ratio (C1/C28) of the BB175X?

The capacitance ratio C1/C28 is 22. That means the capacitance at 1 V reverse bias is 22 times the capacitance at 28 V, giving a wide tuning range for VCO and filter applications.

Is BB175X suitable for VHF applications?

Yes, the BB175X is described as a VHF varactor diode. Its capacitance range and low package parasitics in SOD-523 make it suitable for VHF tuners and voltage-controlled oscillators.