MMVL3102T1G Equivalent & Substitute Parts

Part Overview

The MMVL3102T1G is a tuning varactor diode manufactured by onsemi, designed for 30 V applications in surface mount SOD-323 packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility across voltage ratings, capacitance characteristics, diode type, and mounting specifications to ensure functional equivalence in circuit design.

Substiute Parts

MMVL3102T1G

onsemiIn Stock: 760MMVL3102T1G Datasheet

Current PartRFQ

BB131,115

NXP SemiconductorsIn Stock: 13105BB131,115 Datasheet

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BB135,135

NXP USA Inc.In Stock: 1022BB135,135 Datasheet

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BB170X

NXP USA Inc.In Stock: 6269BB170X Datasheet

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BB439E6327HTSA1

Infineon TechnologiesIn Stock: 27391BB439E6327HTSA1 Datasheet

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BB639E7904HTSA1

Infineon TechnologiesIn Stock: 80441BB639E7904HTSA1 Datasheet

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BB640E6327HTSA1

Infineon TechnologiesIn Stock: 3236BB640E6327HTSA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMVL3102T1G is determined by the following critical parameters:

• Voltage Rating: Peak reverse voltage must be 30 V or higher
• Package Type: Surface mount SOD-323 (SC-76) packaging required
• Diode Configuration: Single diode type only
• Mounting Method: Surface mount technology
• Capacitance Characteristics: Capacitance values and ratios at specified voltage and frequency conditions
• Quality Factor (Q): Performance metric at specified conditions
• Operating Temperature Range: Must support the application's thermal requirements

All identified substitute parts maintain the 30 V peak reverse voltage rating, SOD-323 surface mount package, and single diode configuration. Variations exist in capacitance values, capacitance ratios, quality factors, and operating temperature ranges, which determine suitability for specific circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Active Product Status: BB135,135 and BB170X are classified as active products from NXP USA Inc., making them preferred choices for new designs and ongoing production. Both maintain full compliance with ROHS3 standards and REACH regulations.

Compliance Considerations: BB135,135 and BB170X offer ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. BB439E6327HTSA1, BB639E7904HTSA1, and BB640E6327HTSA1 are classified as "Not For New Designs" despite ROHS3 compliance, indicating these parts are suitable for legacy system maintenance only.

Voltage Compatibility: BB439E6327HTSA1 operates at 28 V peak reverse voltage, which is 2 V lower than the MMVL3102T1G specification. This part is suitable only for applications where the 28 V rating is acceptable within circuit design margins.

Temperature Range: BB639E7904HTSA1 and BB640E6327HTSA1 support operating temperatures up to 150°C, matching the MMVL3102T1G specification. BB131,115, BB135,135, and BB170X are limited to 125°C maximum, which may be restrictive for high-temperature applications.

Capacitance Characteristics: Substitute parts exhibit varying capacitance values and ratios. Circuit designers must evaluate whether the specific capacitance characteristics of each substitute align with tuning range and frequency response requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can BB135,135 directly replace MMVL3102T1G in all applications?

A: BB135,135 maintains the same 30 V voltage rating, SOD-323 package, and single diode configuration as MMVL3102T1G. However, capacitance characteristics differ significantly (2.1pF @ 28V versus 25pF @ 3V). Direct replacement is possible only if the circuit design accommodates the different capacitance values and tuning ratios. Operating temperature is limited to 125°C compared to 150°C for MMVL3102T1G.

Q: What is the difference between capacitance ratio conditions (C3/C25 versus C0.5/C28)?

A: Capacitance ratio conditions specify the voltage points at which capacitance is measured. MMVL3102T1G uses C3/C25 (capacitance at 3V divided by capacitance at 25V), while BB131,115 and BB135,135 use C0.5/C28. These different measurement conditions reflect different circuit operating points and tuning ranges. Selection depends on whether the application operates at the voltage conditions specified for each part.

Q: Is BB170X suitable for high-frequency applications?

A: BB170X is an active NXP product with ROHS3 compliance and REACH unaffected status. It provides a capacitance ratio of 15 (C1/C28) and operates across -55°C to 125°C. Suitability for high-frequency applications depends on the specific frequency requirements and whether the capacitance characteristics at the C1/C28 measurement condition align with circuit design parameters.

Q: Why are some substitute parts marked "Not For New Designs"?

A: Parts marked "Not For New Designs" (BB439E6327HTSA1, BB639E7904HTSA1, BB640E6327HTSA1) are available for legacy system maintenance and repair but are not recommended for new product development. These parts remain in inventory and maintain compliance certifications, making them suitable for sustaining existing equipment.

Q: Does package compatibility guarantee functional equivalence?

A: No. While all substitute parts use SOD-323 surface mount packaging, functional equivalence requires matching voltage ratings, capacitance characteristics, and operating temperature ranges to the application requirements. Capacitance values and ratios vary significantly among substitutes, requiring circuit-level evaluation before implementation.

Q: Which substitute offers the best compliance profile for current manufacturing?

A: BB135,135 and BB170X are both active products with ROHS3 compliance and REACH unaffected status, representing the most current compliance profile. Both are suitable for new designs and ongoing production without regulatory restrictions.