| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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2 pcs
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2 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Manufacturer Name | |
| Forward Current | |
| Halogen Free | |
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| Operating Temperature Range | |
| Package / Case | |
| Reverse Voltage | |
| SVHC Present | |
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| Tape & Reel | |
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The BB639E7908 is a silicon variable capacitance diode (varactor) from Infineon Technologies, designed for tuning applications in VHF TV and VTR tuners. It offers a high capacitance ratio and low series resistance, enabling precise frequency control.
Key electrical specifications include a maximum reverse voltage of 30V, a peak reverse voltage of 35V, and a maximum forward current of 20mA. The diode exhibits a capacitance range from 38.3 pF typical at 1V reverse bias to 2.6 pF typical at 28V, measured at 1 MHz. The capacitance ratio (CT1/CT28) is typically 14.7, and series resistance is 0.65 ohms typical at 5V and 470 MHz.
The device is housed in a compact SOD-323 package, suitable for surface mount assembly. It operates over a temperature range of -55°C to 150°C, making it appropriate for a wide variety of environments. The package is Pb-free and RoHS compliant.
Typical applications include VHF TV tuner circuits, VTR tuners, and other RF tuning circuits requiring low distortion and high Q.
The maximum reverse voltage is 30 V, with a peak reverse voltage of 35 V (R ≥ 5 kΩ).
The maximum forward current is 20 mA.
The BB639E7908 is available in a SOD-323 surface mount package.
The typical capacitance ratio CT1/CT28 (at 1 V and 28 V, 1 MHz) is 14.7, with a minimum of 13.5.
The typical series resistance is 0.65 Ω, with a maximum of 0.7 Ω, measured at VR = 5 V and f = 470 MHz.
The operating temperature range is -55°C to 150°C.
Yes, the BB639E7908 is Pb-free and RoHS compliant per the datasheet.