ML03511R2BAT2A Equivalent & Substitute Parts

Part Overview

The ML03511R2BAT2A is a 1.2 pF ceramic capacitor manufactured by KYOCERA AVX, rated at 50V with C0G/NP0 temperature coefficient in 0603 (1608 Metric) surface mount package. This component is designed for RF, microwave, and high-frequency applications requiring high Q and low loss characteristics. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching electrical specifications (capacitance, tolerance, temperature coefficient) and mechanical compatibility (package, mounting type, physical dimensions). Direct equivalents maintain the 50V rating, while upgrade substitutes provide higher voltage ratings (250V) within the same package footprint, offering enhanced design margin for applications where voltage headroom is beneficial.

Substiute Parts

ML03511R2BAT2A

KYOCERA AVXIn Stock: 2747ML03511R2BAT2A Datasheet

Current PartRFQ

CBR06C129B5GAC

KEMETIn Stock: 9935CBR06C129B5GAC Datasheet

DirectRFQ

CBR06C129BAGAC

KEMETIn Stock: 4888CBR06C129BAGAC Datasheet

UpgradeRFQ

GQM1875C2E1R2BB12D

Murata ElectronicsIn Stock: 4187GQM1875C2E1R2BB12D Datasheet

UpgradeRFQ

QSCP251Q1R2B1GV001T

Johanson Technology Inc.In Stock: 3134QSCP251Q1R2B1GV001T Datasheet

UpgradeRFQ

VJ0603D1R2BXPAJ

Vishay VitramonIn Stock: 39605VJ0603D1R2BXPAJ Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic is based on three primary criteria:

Electrical Compatibility: All substitute parts maintain identical capacitance (1.2 pF), tolerance (±0.1 pF), temperature coefficient (C0G/NP0), and operating temperature range (-55°C to 125°C). These parameters are non-negotiable for RF and microwave circuit performance.

Mechanical Compatibility: All parts use 0603 (1608 Metric) surface mount package with identical mounting type (MLCC). Physical dimensions remain within acceptable tolerance for PCB layout and assembly processes.

Voltage Rating Categories:

• Direct Equivalent (50V): CBR06C129B5GAC maintains the original 50V rating, providing pin-for-pin compatibility with identical electrical performance.
• Upgrade Substitutes (250V): CBR06C129BAGAC, GQM1875C2E1R2BB12D, QSCP251Q1R2B1GV001T, and VJ0603D1R2BXPAJ provide 5× voltage rating increase while maintaining all other electrical and mechanical specifications. These are suitable for applications requiring enhanced voltage margin or operating in higher voltage environments.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and EAR99 ECCN classification, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection: CBR06C129B5GAC is the primary direct equivalent, maintaining 50V rating identical to the ML03511R2BAT2A. Selection is appropriate for applications where voltage rating is a fixed design constraint and component interchangeability is required without circuit modification.

Upgrade Substitute Selection: CBR06C129BAGAC, GQM1875C2E1R2BB12D, QSCP251Q1R2B1GV001T, and VJ0603D1R2BXPAJ are suitable upgrade substitutes with 250V rating. These parts are applicable in designs where:

• Higher voltage margin is beneficial for reliability
• Circuit topology permits higher voltage components
• Supply chain availability of 50V variants is constrained

All substitute parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original component.

Availability Consideration: VJ0603D1R2BXPAJ (Vishay Vitramon) offers the highest inventory level (39,547 pcs), followed by CBR06C129B5GAC (KEMET, 9,847 pcs). Selection based on supply chain requirements and lead time constraints is valid.

Frequently Asked Questions (FAQ)

Q: Can CBR06C129B5GAC replace ML03511R2BAT2A without circuit modification?

A: Yes. CBR06C129B5GAC is a direct equivalent with identical electrical specifications (1.2 pF, ±0.1 pF, 50V, C0G/NP0) and mechanical compatibility (0603 package, surface mount). No circuit changes are required.

Q: What is the difference between direct equivalents and upgrade substitutes?

A: Direct equivalents (CBR06C129B5GAC) maintain the 50V rating of the original part. Upgrade substitutes (CBR06C129BAGAC, GQM1875C2E1R2BB12D, QSCP251Q1R2B1GV001T, VJ0603D1R2BXPAJ) provide 250V rating while maintaining all other electrical and mechanical specifications. Upgrade substitutes are suitable when higher voltage margin is acceptable or beneficial.

Q: Are all substitute parts physically compatible with the original PCB layout?

A: Yes. All substitute parts use the 0603 (1608 Metric) package with surface mount configuration. Physical dimensions are within acceptable tolerance for standard PCB assembly processes. Thickness variations (0.74mm to 0.94mm) are within typical PCB clearance specifications and do not affect assembly compatibility.

Q: Do substitute parts maintain regulatory compliance?

A: Yes. All substitute parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity) rating, matching the original component's regulatory status. EAR99 ECCN classification is consistent across all parts.

Q: Which substitute part offers the best availability?

A: VJ0603D1R2BXPAJ (Vishay Vitramon) has the highest inventory level at 39,547 pcs. CBR06C129B5GAC (KEMET) is the second option with 9,847 pcs available. Both are suitable for immediate procurement.

Q: Can 250V rated substitutes be used in a 50V circuit?

A: Yes. Higher voltage-rated components are electrically compatible in lower voltage applications. The 250V substitutes maintain identical capacitance, tolerance, and temperature coefficient, making them suitable for any circuit designed for 50V or lower operation.