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Product Detailed Parameters
- Description：DIODE VAR CAP 30V 20MA SC-79
- Series：-
- Mfr：Infineon Technologies
- Package：Tape & Reel (TR)
- Capacitance @ Vr, F：2.3pF @ 28V, 1MHz
- Capacitance Ratio：9.8
- Capacitance Ratio Condition：C1/C28
- Voltage - Peak Reverse (Max)：30 V
- Diode Type：Single
- Q @ Vr, F：-
- Operating Temperature：-55°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-79, SOD-523
- Supplier Device Package：PG-SC79-2
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Overview
The BB555-02V is a silicon tuning diode designed for UHF-TV tuners, manufactured by Infineon Technologies. It features a single-diode configuration housed in an SC79 surface-mount package with two pins. Key electrical parameters include a maximum reverse voltage of 30 V and a peak reverse voltage of 35 V. At 1 MHz, the capacitance ranges from 1.9 pF to 2.3 pF at 28 V reverse bias, and from 17.5 pF to 20 pF at 1 V. The device exhibits a minimum capacitance ratio of 8.2 (measured between 1 V and 28 V) and a low series resistance of 0.75 Ω maximum at 470 MHz. Operating temperature spans -55 °C to +150 °C.
Feature Summary
- Engineered for UHF-TV tuner applications with high capacitance ratios
- Features low series inductance and low series resistance
- Ensures excellent uniformity and matching through in-line assembly procedures
Applications
- UHF-TV tuners
Procurement Notes
Verify component authenticity by checking markings against official datasheet specifications. Confirm package type matches SC79 requirements. Ensure environmental compliance aligns with RoHS standards. Validate date codes using manufacturer coding tables. Request material content sheets for supply chain transparency.
Selection Notes
Select this component when designing circuits requiring precise capacitance control in UHF frequency bands. Consider the low series inductance for high-frequency performance stability. Evaluate thermal management capabilities given the wide operating temperature range. Compare capacitance tolerance requirements against the specified matching limits for array consistency.
Part Context
This part belongs to the BB535/BB555 series of silicon tuning diodes produced by Infineon Technologies. The series includes variants like the BB535 and BB555, differentiated primarily by package types such as SOD323, SCD80, and SC79. These components share similar functional characteristics tailored for television tuner circuits.
Replacement Considerations
Direct substitutes within the same family include the standard BB555 and BB535 models. Verify pin compatibility and package dimensions before substitution. Ensure equivalent electrical parameters, particularly capacitance ratios and reverse voltage ratings, match circuit requirements.
