The KYOCERA AVX CWR29FB106KBBZ is a tantalum capacitor designed for applications requiring stable capacitance, compact form factor, and reliable performance across a range of operating conditions. Tantalum capacitors are widely used in power supply filtering, decoupling, and timing circuits where volumetric efficiency and low ESR characteristics are valued. This component is manufactured by KYOCERA AVX, a recognized supplier of passive components with a long-standing presence in the tantalum capacitor market.
This device is supplied in bulk packaging and carries an active product status, indicating ongoing availability for design-in and volume production. The part is ROHS3 compliant, meeting current European directives on hazardous substances, which supports its use in commercial and industrial products targeting global markets. Moisture Sensitivity Level (MSL) 1 classification means the component can be handled and stored without time-limited exposure concerns after opening from dry pack, simplifying inventory management and assembly planning.
Tantalum capacitors like the CWR29FB106KBBZ are commonly selected for their high capacitance-to-volume ratio compared to ceramic or aluminum electrolytic alternatives. They exhibit stable electrical characteristics over temperature and frequency, making them suitable for voltage regulation stages, input and output filtering in DC-DC converters, and hold-up capacitance in power circuits. The tantalum construction also provides predictable aging behavior and low leakage current, which can be advantageous in precision analog circuits and low-power systems.
The component is classified under ECCN EAR99, indicating no specific export control restrictions under U.S. regulations for most destinations, and falls under HTSUS 8532.21.0050 for customs and tariff purposes. With 731 pieces reported as new original stock, the part is available for prototyping, short-run production, or integration into bill-of-materials for volume manufacturing. Engineers evaluating tantalum capacitors for power management, signal conditioning, or embedded systems can consider this part where the electrical and mechanical specifications align with circuit requirements.
Replacement Planning for KYOCERA AVX CWR29FB106KBBZ Tantalum Capacitors
When KYOCERA AVX CWR29FB106KBBZ becomes constrained, obsolete in a local supply chain, or unavailable in the required packaging quantity, selecting a replacement is not only a matter of matching “10 µF tantalum capacitor.” The substitute must be checked against capacitance, tolerance, rated voltage, case size, termination style, ESR behavior, leakage current, surge robustness, derating rules, and qualification level.
CWR29FB106KBBZ is a KYOCERA AVX tantalum capacitor typically treated as a high-reliability surface-mount tantalum option. Common replacement candidates include:
- KYOCERA AVX
TAJB106K035RNJ
TAJB106K035RNJ
AVX Corporation
2018+RoHS
8000
- KYOCERA AVX TPSB106K035R1000
- KEMET T491B106K035AT
- KEMET T494B106K035AT
- Vishay 293D106X9035B2TE3
- Vishay 597D106X9035B2T
These parts should be evaluated as engineering alternatives, not automatic drop-in replacements. The most suitable option depends on whether the design prioritizes continuity of supply, lower ESR, commercial availability, high-reliability screening, board footprint compatibility, or cost control.
What Defines the KYOCERA AVX CWR29FB106KBBZ Original Component
The KYOCERA AVX CWR29FB106KBBZ is identified as a tantalum capacitor with a 10 µF capacitance value and ±10% tolerance. It is RoHS3 compliant, has MSL 1 moisture sensitivity rating, and is supplied in bulk packaging. The CWR29 family is generally associated with high-reliability solid tantalum capacitor applications, so replacement selection should consider more than capacitance and voltage.
| Parameter | KYOCERA AVX CWR29FB106KBBZ Engineering Relevance |
|---|---|
| Manufacturer | KYOCERA AVX |
| Part Number | CWR29FB106KBBZ |
| Capacitor Type | Solid tantalum capacitor |
| Capacitance | 10 µF |
| Tolerance | ±10% |
| Rated Voltage | Commonly cross-referenced in the 35 V class for 10 µF B-case alternatives; confirm against the official KYOCERA AVX datasheet before approval |
| Package / Case Consideration | B-case style alternatives are typically reviewed first for footprint compatibility |
| Packaging | Bulk |
| RoHS Status | RoHS3 compliant |
| MSL | 1, unlimited floor life under standard handling conditions |
| Product Status | Active |
| Inventory Context | 731 pcs new original in stock |
| Regulatory | ECCN EAR99, HTSUS 8532.21.0050 |
From a replacement perspective, the most influential characteristics are capacitance stability, rated voltage derating, package size, ESR, leakage current, and reliability grade. In power rail decoupling, a lower-ESR replacement may improve ripple performance but can also affect loop stability in older regulator circuits. In timing, filtering, or hold-up applications, capacitance tolerance and DC leakage may matter more than ESR.
Typical uses for CWR29FB106KBBZ-like tantalum capacitors include DC rail decoupling, military or industrial electronics, avionics support hardware, telecom power conditioning, embedded control boards, and high-reliability assemblies where ceramic capacitance derating or piezoelectric effects are undesirable.
Candidate Replacement Parts for KYOCERA AVX CWR29FB106KBBZ Equivalents
The following table compares practical replacement candidates for KYOCERA AVX CWR29FB106KBBZ. Each part should be verified against the original schematic, PCB footprint, procurement specification, and qualification requirements.
| Manufacturer | Part Number | Key Specifications | Product Features | Typical Applications | Why It Can Replace the Original Part | Main Differences or Limitations | Recommended Usage |
|---|---|---|---|---|---|---|---|
| KYOCERA AVX |
TAJB106K035RNJ
AVX Corporation
2018+RoHS
8000
| 10 µF, ±10%, 35 V, B case, solid tantalum MnO2 | Commercial-grade AVX tantalum capacitor with common footprint and broad availability | General DC decoupling, industrial control, telecom boards, embedded electronics | Same manufacturer family ecosystem, same capacitance and tolerance class, commonly available B-case 35 V alternative | Commercial-grade part; may not match CWR29 high-reliability screening or surge qualification | Suitable when the design allows commercial tantalum capacitors and qualification level is less restrictive |
| KYOCERA AVX | TPSB106K035R1000 | 10 µF, ±10%, 35 V, B case, low-ESR tantalum | Lower ESR than standard MnO2 tantalum parts, designed for power filtering | Switching regulator outputs, bulk decoupling, ripple-current filtering | Matches capacitance and voltage class while improving ESR performance | Lower ESR may change regulator loop behavior; confirm stability and inrush conditions | Suitable when ripple performance or power rail impedance is a concern |
| KEMET | T491B106K035AT | 10 µF, ±10%, 35 V, B case, MnO2 tantalum | Industry-standard commercial tantalum capacitor with broad sourcing | Industrial electronics, consumer equipment, communication modules | Electrical class and footprint are close to common CWR29FB106KBBZ replacement requirements | Not a high-reliability CWR-series part; ESR and leakage limits may differ | Suitable for cost-sensitive commercial replacements after electrical validation |
| KEMET | T494B106K035AT | 10 µF, ±10%, 35 V, B case, low-ESR MnO2 tantalum | Improved ESR characteristics compared with standard commercial tantalum | DC/DC converter filtering, power supply decoupling, board-level bulk capacitance | Provides same capacitance and voltage class with enhanced ESR performance | Qualification level and surge screening may differ from the original; ESR change should be checked | Suitable for power rails where lower impedance is beneficial |
| Vishay | 293D106X9035B2TE3 | 10 µF, ±10%, 35 V, B case, molded tantalum | Established commercial molded tantalum capacitor series | General-purpose decoupling, filtering, signal conditioning, industrial electronics | Capacitance, tolerance, voltage class, and case category align with common replacement needs | Datasheet ESR, leakage, and termination details must be compared with the original | Suitable as a second-source option for standard tantalum applications |
| Vishay | 597D106X9035B2T | 10 µF, ±10%, 35 V, B case, low-ESR tantalum | Low-ESR molded tantalum capacitor designed for power applications | Power conversion, distributed power rails, local energy storage | Can replace the original when lower ESR and similar capacitance/voltage are desired | May not duplicate CWR29 qualification level; lower ESR can affect older analog or regulator circuits | Suitable for power filtering where ESR reduction is acceptable and validated |
In practice, KYOCERA AVX
TAJB106K035RNJ
is often the closest commercial same-manufacturer path, while KEMET T491B106K035AT and Vishay 293D106X9035B2TE3 serve as practical second-source options. If the original KYOCERA AVX CWR29FB106KBBZ is used on a switching regulator rail, KYOCERA AVX TPSB106K035R1000, KEMET T494B106K035AT, or Vishay 597D106X9035B2T may offer better ripple performance, provided the circuit remains stable.
TAJB106K035RNJ
AVX Corporation
2018+RoHS
8000
Engineering Comparison of KYOCERA AVX CWR29FB106KBBZ Replacement Options
The best CWR29FB106KBBZ replacement depends on the original circuit function. A part used for simple bulk decoupling has different substitution risk than a capacitor used in a regulator compensation path, aerospace assembly, surge-exposed input rail, or long-life industrial product.
| Evaluation Factor | TAJB106K035RNJ | TPSB106K035R1000 | T491B106K035AT | T494B106K035AT | 293D106X9035B2TE3 | 597D106X9035B2T |
|---|---|---|---|---|---|---|
| Electrical Compatibility | Close match for capacitance, tolerance, and voltage class | Close match with lower ESR | Close electrical class match | Close match with lower ESR | Close electrical class match | Close match with lower ESR |
| Mechanical Compatibility | B-case option supports footprint alignment checks | B-case option, verify height and land pattern | B-case option, commonly footprint-compatible | B-case option, verify exact dimensions | B-case option, verify Vishay land pattern | B-case option, check height and pad geometry |
| Performance Difference | Standard ESR behavior similar to many commercial tantalums | Lower impedance and better ripple handling | Standard commercial tantalum performance | Lower ESR than T491 | Standard molded tantalum behavior | Low ESR for power applications |
| Reliability Consideration | Commercial AVX part; not identical to CWR29 screening | Commercial low-ESR AVX; validate surge conditions | Commercial-grade KEMET alternative | Commercial low-ESR option | Commercial Vishay alternative | Low-ESR Vishay option; validate stress conditions |
| Package Availability | Often available through distribution | Availability may vary by ESR rating and reel quantity | Broad commercial availability | Common for power designs | Broad second-source availability | Availability depends on package and reel stock |
| Cost Consideration | Usually moderate | May cost more than standard ESR options | Often cost-effective | Usually higher than T491 | Competitive second-source option | May cost more due to low-ESR design |
| Best Application Fit | General replacement where AVX continuity is preferred | Power rails needing reduced ESR | Cost-sensitive commercial replacement | DC/DC output filtering and power decoupling | Second-source general-purpose replacement | Power filtering with low impedance needs |
| Main Advantage | Same manufacturer ecosystem | Better ripple and ESR behavior | Broad availability and pricing | Good balance of ESR and availability | Strong second-source coverage | Low ESR performance |
| Main Limitation | Not equivalent to high-reliability CWR qualification | ESR change may affect stability | Qualification and ESR may differ | Not a direct high-reliability equivalent | Requires datasheet-level verification | Low ESR is not always desirable in older circuits |
For a conservative replacement strategy, first compare KYOCERA AVX
TAJB106K035RNJ
, KEMET T491B106K035AT, and Vishay 293D106X9035B2TE3 because these maintain standard tantalum behavior closer to many original decoupling designs. For power integrity improvement, KYOCERA AVX TPSB106K035R1000, KEMET T494B106K035AT, and Vishay 597D106X9035B2T are better candidates, but ESR, ripple current, inrush current, and regulator stability should be reviewed before approval.
TAJB106K035RNJ
AVX Corporation
2018+RoHS
8000
Before releasing any substitute for KYOCERA AVX CWR29FB106KBBZ, confirm the original rated voltage, case dimensions, ESR limit, leakage current, polarity marking, termination finish, and qualification requirements from the approved datasheet or AVL. For replacement sourcing and quotations, contact IC-Components.com or email Info@IC-Components.com.
