CBR06C129BAGAC Equivalent & Substitute Parts

Part Overview

The CBR06C129BAGAC is a 1.2 pF ceramic capacitor manufactured by KEMET, rated for 250V with C0G/NP0 temperature coefficient characteristics. This surface mount multilayer ceramic capacitor (MLCC) in 0603 package format is designed for RF, microwave, and high-frequency applications requiring high Q factor and low loss performance. The part is currently active in production with 4871 pieces in stock inventory. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

CBR06C129BAGAC

KEMETIn Stock: 4888CBR06C129BAGAC Datasheet

Current PartRFQ

GQM1875C2E1R2BB12D

Murata ElectronicsIn Stock: 4187GQM1875C2E1R2BB12D Datasheet

DirectRFQ

QSCP251Q1R2B1GV001T

Johanson Technology Inc.In Stock: 3134QSCP251Q1R2B1GV001T Datasheet

DirectRFQ

VJ0603D1R2BXPAJ

Vishay VitramonIn Stock: 39605VJ0603D1R2BXPAJ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CBR06C129BAGAC are qualified based on strict equivalence across the following critical parameters:

Electrical Equivalence: Capacitance value of 1.2 pF with ±0.1pF tolerance, 250V voltage rating, and C0G/NP0 temperature coefficient must be identical across all substitute candidates.

Mechanical Compatibility: Package designation 0603 (1608 Metric) ensures physical interchangeability on printed circuit boards. Dimensional variations in length, width, and thickness must remain within assembly process tolerances.

Environmental Specifications: Operating temperature range of -55°C to 125°C and MSL 1 rating must be maintained across all substitutes.

Compliance Requirements: RoHS3 compliance and EAR99 ECCN classification are mandatory for all qualified substitutes.

Application Suitability: All substitute parts must be rated for RF, microwave, and high-frequency applications with documented high Q and low loss characteristics.

The following parts meet all substitution criteria: VJ0603D1R2BXPAJ (Vishay Vitramon), QSCP251Q1R2B1GV001T (Johanson Technology Inc.), and GQM1875C2E1R2BB12D (Murata Electronics).

Parameter Comparison

Engineering Selection Recommendations

All four parts—CBR06C129BAGAC, VJ0603D1R2BXPAJ, QSCP251Q1R2B1GV001T, and GQM1875C2E1R2BB12D—are active production components with identical electrical and mechanical specifications. Selection among these parts may be based on:

Inventory Availability: VJ0603D1R2BXPAJ (Vishay Vitramon) maintains the highest inventory level at 39,547 pieces, followed by CBR06C129BAGAC (KEMET) at 4,871 pieces, GQM1875C2E1R2BB12D (Murata Electronics) at 4,147 pieces, and QSCP251Q1R2B1GV001T (Johanson Technology Inc.) at 3,051 pieces.

Compliance Certification: All parts maintain ROHS3 compliance and EAR99 ECCN classification, meeting regulatory requirements for commercial and industrial applications.

Dimensional Consistency: While all parts conform to 0603 package specification, minor thickness variations exist: CBR06C129BAGAC and VJ0603D1R2BXPAJ at 0.035" (0.90mm) and 0.037" (0.94mm) respectively, QSCP251Q1R2B1GV001T at 0.035" (0.89mm), and GQM1875C2E1R2BB12D at 0.031" (0.80mm). These variations remain within standard assembly process tolerances for 0603 components.

Series Designation: Each manufacturer maintains distinct series nomenclature (CBR-SMD RF C0G for KEMET, VJ HIFREQ for Vishay, S for Johanson, and GQM for Murata), reflecting manufacturer-specific design approaches while maintaining electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Can VJ0603D1R2BXPAJ directly replace CBR06C129BAGAC in existing circuit designs?

A: Yes. Both parts share identical capacitance (1.2 pF), tolerance (±0.1pF), voltage rating (250V), temperature coefficient (C0G/NP0), and operating temperature range (-55°C to 125°C). The 0603 package form factor ensures mechanical interchangeability on standard PCB layouts. Both are ROHS3 compliant with MSL 1 rating.

Q: What is the significance of the ±0.1pF tolerance specification?

A: The ±0.1pF tolerance defines the maximum capacitance deviation from the nominal 1.2 pF value, establishing the precision class for RF and high-frequency circuit applications. All qualified substitutes maintain this identical tolerance specification, ensuring circuit performance consistency.

Q: Are there dimensional differences between substitute parts that affect PCB assembly?

A: All parts conform to 0603 (1608 Metric) package specification with length 0.063" (1.60mm) and width 0.031" (0.80mm). Thickness variations range from 0.031" to 0.037" (0.80mm to 0.94mm), remaining within standard surface mount assembly process tolerances. No PCB layout modifications are required.

Q: Why is C0G/NP0 temperature coefficient critical for these applications?

A: C0G/NP0 temperature coefficient provides minimal capacitance variation across the -55°C to 125°C operating range, essential for maintaining frequency stability in RF and microwave circuits. All qualified substitutes maintain this specification.

Q: What does MSL 1 (Unlimited) moisture sensitivity rating indicate?

A: MSL 1 rating indicates the component requires no special moisture control during storage, handling, or assembly. Components may be stored at standard ambient conditions without desiccant packaging or baking requirements prior to reflow soldering.

Q: Are all substitute parts suitable for high-frequency applications?

A: Yes. All qualified substitutes are rated for RF, microwave, and high-frequency applications with documented high Q factor and low loss characteristics, meeting the performance requirements of the original CBR06C129BAGAC specification.

Q: What compliance certifications apply to all substitute parts?

A: All parts maintain ROHS3 compliance, confirming restriction of hazardous substances in accordance with EU directive requirements. All parts are classified as EAR99 under export control regulations, indicating standard commercial component status.