BB202 Varactor Diode Equivalent & Substitute Parts

Part Overview

The BB202 is a single varactor diode manufactured by NXP USA Inc., designed for voltage-controlled capacitance applications in RF and tuning circuits. It operates at a peak reverse voltage of 6V with a capacitance of 11.2pF at 2.3V (1MHz) and a capacitance ratio of 2.5. The device is housed in an SC-79/SOD-523 surface mount package and is currently in active production status with RoHS3 compliance.

Substitute parts are identified when they maintain electrical compatibility across critical parameters including peak reverse voltage, capacitance range, capacitance ratio, operating temperature range, and package form factor. The BB202 remains in active production; however, alternative sources may be required for specific supply chain, inventory, or application-specific requirements.

Substiute Parts

BB202,135

NXP USA Inc.In Stock: 797BB202,135 Datasheet

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BBY5302VH6327XTSA1

Infineon TechnologiesIn Stock: 2215BBY5302VH6327XTSA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BB202 is determined by strict alignment of the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Peak reverse voltage rating must equal or exceed 6V
• Capacitance ratio must fall within the range of 2.5 ± tolerance (2.6 is acceptable for tuning applications with similar voltage-to-capacitance characteristics)
• Diode type must be single varactor configuration
• Operating temperature range must support the application's thermal requirements

Mechanical Compatibility Criteria:

• Package form factor must be SC-79 or SOD-523 (equivalent land patterns)
• Surface mount mounting type required
• MSL rating must be 1 or equivalent (unlimited moisture sensitivity)

Compliance Requirements:

• RoHS3 compliance mandatory
• REACH unaffected status required

The BBY5302VH6327XTSA1 (Infineon Technologies) qualifies as a substitute based on matching peak reverse voltage (6V), compatible capacitance ratio (2.6 vs. 2.5), identical package designation (SC-79/SOD-523), surface mount configuration, and equivalent environmental compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

BB202,135 (NXP USA Inc.) is the primary component choice for applications requiring an active production varactor diode with established supply chain availability (690 pcs in stock) and proven field performance. The device meets RoHS3 and REACH compliance requirements and operates across the -55°C to 85°C temperature range.

BBY5302VH6327XTSA1 (Infineon Technologies) serves as a qualified substitute when NXP BB202 availability is constrained or when extended operating temperature capability (-55°C to 125°C) is required. Both devices share identical peak reverse voltage ratings, compatible capacitance ratios, matching package designations, and equivalent environmental compliance certifications. The Infineon part is available in higher inventory (2200 pcs) and supports cut tape and Digi-Reel packaging options.

Selection between these parts should be based on supply chain requirements, inventory availability, and application temperature specifications. Both parts are active production devices with full RoHS3 compliance and unlimited moisture sensitivity ratings.

Frequently Asked Questions (FAQ)

Q: Can the BBY5302VH6327XTSA1 directly replace the BB202 in existing designs?

A: Yes, provided the application operates within the BB202's temperature range (-55°C to 85°C). Both devices share identical peak reverse voltage (6V), compatible capacitance ratios (2.5 vs. 2.6), and matching SC-79/SOD-523 package designations. The Infineon part's extended temperature rating (to 125°C) does not affect compatibility in lower-temperature applications.

Q: What is the significance of the capacitance ratio difference (2.5 vs. 2.6)?

A: The capacitance ratio represents the voltage-dependent capacitance variation. A ratio of 2.5 (BB202) versus 2.6 (BBY5302VH6327XTSA1) indicates slightly different tuning slopes. Both ratios are compatible for standard RF tuning and voltage-controlled oscillator applications. Application-specific circuit simulation may be required for precision frequency control designs.

Q: Are the capacitance measurements at different voltages (2.3V vs. 3V) a compatibility concern?

A: The capacitance values are specified at different reference voltages due to manufacturer measurement standards. Both devices operate at the same 6V peak reverse voltage and exhibit similar capacitance ratio characteristics. Circuit performance depends on the actual operating voltage point, not the reference measurement condition.

Q: Do both parts have identical packaging and land patterns?

A: Yes. Both the BB202 and BBY5302VH6327XTSA1 use the SC-79/SOD-523 package designation with identical surface mount land patterns. No PCB layout modifications are required for substitution.

Q: What are the compliance and environmental differences between these parts?

A: Both parts are RoHS3 compliant, REACH unaffected, and rated at MSL 1 (unlimited moisture sensitivity). Environmental and regulatory compliance is equivalent between the two devices.