BB639E7908

$0.34

Description：DIODE VARACTOR 30V SOD-323
Series：*

SKU:1327f2cb556d Category: Variable Capacitance (Varicaps, Varactors) Brand: Infineon Technologies

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Product introduction

Product Detailed Parameters

Description：DIODE VARACTOR 30V SOD-323
Series：*
Mfr：Infineon Technologies
Package：Cut Tape (CT)
Capacitance @ Vr, F：-
Capacitance Ratio：-
Capacitance Ratio Condition：-
Voltage - Peak Reverse (Max)：-
Diode Type：-
Q @ Vr, F：-
Operating Temperature：-
Grade：-
Qualification：-
Mounting Type：-
Package / Case：-
Supplier Device Package：-

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BB639E7908

Overview

The BB639E7908 is a single silicon varactor diode from Infineon Technologies, designed for UHF and VHF tuner applications. It operates within a reverse voltage range up to 30 V and supports a maximum forward current of 20 mA. The device exhibits a capacitance ratio of 14.7 at test conditions of 1/28 V, with specific capacitance values of 29.75 pF at CT1 and 2.85 pF at CT2. Its series resistance is rated at 0.65 Ω. The component is housed in the SOD-323 surface-mount package and complies with RoHS standards.

Feature Summary

Single configuration optimized for high-frequency tuning circuits
Silicon construction ensuring stable capacitance variation under reverse bias
Surface-mount SOD-323 packaging for compact circuit board integration

Applications

UHF tuner circuits
VHF tuner circuits
Frequency modulation stages

Procurement Notes

Verify the exact suffix E7908 against official Infineon documentation, as standard listings often reference E7904 or CE7904 variants. Confirm availability status, as this specific part number may be discontinued or superseded by newer revisions. Request the latest datasheet and material content declaration to ensure compliance with current environmental regulations before procurement.

Selection Notes

Select this component when a single varactor diode with a capacitance ratio near 14.7 is required for UHF/VHF bands. Ensure the design accommodates the 30 V reverse voltage limit and 20 mA forward current constraint. Compare the 0.65 Ω series resistance against circuit loss requirements. Verify that the SOD-323 footprint matches the PCB layout constraints.

Part Context

The BB639 belongs to Infineon's dedicated varactor diode family intended for radio frequency tuning. It shares functional similarities with the BB639C and BB659 models but differs in specific capacitance parameters and packaging. This series is engineered specifically for analog tuner applications requiring precise voltage-controlled capacitance adjustment.

Replacement Considerations

Official substitutes include the BB639CE7904HTSA1 and BB639C. Verify pinout compatibility and electrical parameter alignment, particularly the capacitance ratio and reverse voltage ratings, before implementing any cross-reference.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.