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TAJC685K020RNJ
KYOCERA AVX
CAP TANT 6.8UF 10% 20V 2312
1331 Pcs New Original In Stock
6.8 µF Molded Tantalum Capacitors 20 V 2312 (6032 Metric) 2Ohm
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5.0 / 5.0
- (412 Ratings)
TAJC685K020RNJ
Product Overview
6613614
DiGi Electronics Part Number
TAJC685K020RNJ-DGManufacturer
KYOCERA AVX
TAJC685K020RNJ
Description
CAP TANT 6.8UF 10% 20V 2312Inventory
1331 Pcs New Original In Stock
6.8 µF Molded Tantalum Capacitors 20 V 2312 (6032 Metric) 2Ohm
Quantity
Minimum 1
Minimum 1
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TAJC685K020RNJ Technical Specifications
Category
Tantalum Capacitors
Packaging
Tape & Reel (TR)
Series
TAJ
Product Status
Active
Capacitance
6.8 µF
Tolerance
±10%
Voltage - Rated
20 V
Type
Molded
ESR (Equivalent Series Resistance)
2Ohm
Operating Temperature
-55°C ~ 125°C
Lifetime @ Temp.
-
Mounting Type
Surface Mount
Package / Case
2312 (6032 Metric)
Size / Dimension
0.236" L x 0.126" W (6.00mm x 3.20mm)
Height - Seated (Max)
0.110" (2.80mm)
Lead Spacing
-
Manufacturer Size Code
C
Features
General Purpose
Failure Rate
-
Datasheet & Documents
Design Resources
SpiTAN Design Tool
HTML Datasheet
TAJC685K020RNJ-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8532.21.0050
Additional Information
Other Names
478-1719-6-NDR
TAJC685K020R
478-1719-6
478-1719-1
478-1719-2
Standard Package
500
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
商品每次都安全完整送達，滿足我所有的需求，非常感謝。
Dec 02, 2025
My items arrived exactly when expected, and the shipping was hassle-free.
Dec 02, 2025
The staff consistently makes me feel valued and well taken care of.
Dec 02, 2025
Their after-sales service demonstrates genuine care for customer success.
Dec 02, 2025
Quick responses from support and fast shipments—everything you could ask for.
Dec 02, 2025
Fast shipping has made my shopping experience even better.
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Frequently Asked Questions (FAQ)
Can I safely replace a TAJC685K020RNJ with a T491C685K025AT in a 15V power rail design without risking premature failure?
While the T491C685K025AT has a higher voltage rating (25V vs. 20V) and similar capacitance (6.8µF), it is not a direct drop-in replacement for the TAJC685K020RNJ due to differences in ESR and package thermal performance. The T491 series typically has higher ESR (often >3Ω), which may affect ripple current handling and transient response in low-impedance circuits. Additionally, the TAJC685K020RNJ’s lower ESR (2Ω) and molded construction offer better stability under temperature cycling. If your application involves high-frequency switching or tight voltage regulation, stick with the TAJC685K020RNJ or verify stability through bench testing before substituting.
What are the key reliability risks when using the TAJC685K020RNJ in an automotive under-hood application with sustained temperatures near 120°C?
The TAJC685K020RNJ is rated for operation up to 125°C, but sustained exposure near this limit significantly accelerates wear-out mechanisms in tantalum capacitors, especially under voltage stress. At 120°C, even with proper derating (e.g., operating at ≤60% of rated voltage), the oxide layer degradation rate increases, raising the risk of thermal runaway—particularly if surge currents or voltage spikes occur. For automotive under-hood use, consider adding a series resistor (1–10Ω) to limit inrush current and ensure the actual DC bias never exceeds 12V. Alternatively, evaluate polymer or multilayer ceramic capacitors (MLCCs) for improved surge immunity and longer lifetime under thermal stress.
How does the TAJC685K020RNJ compare to the 293D685X9020C2TE3 in terms of board-level integration and long-term stability in industrial control systems?
The 293D685X9020C2TE3 (Vishay) offers similar capacitance and voltage but uses a different internal construction that typically results in higher ESR and reduced mechanical robustness compared to the TAJC685K020RNJ. The TAJC685K020RNJ’s molded package provides better resistance to PCB flexure and thermal cycling—critical in industrial environments with vibration and frequent power cycling. Additionally, the TAJ series has a proven track record in mission-critical designs due to tighter process controls. For industrial control systems where long-term capacitance stability and low leakage are essential, the TAJC685K020RNJ is generally preferred unless cost constraints favor the 293D series.
Is it safe to parallel two TAJC685K020RNJ capacitors to achieve 13.6µF on a 12V rail, and what layout precautions are necessary?
Paralleling two TAJC685K020RNJ capacitors can increase total capacitance and reduce effective ESR, but unequal current sharing due to part-to-part ESR variation may cause one capacitor to overheat. To mitigate this, include small balancing resistors (0.5–2Ω, 1/4W) in series with each capacitor. Ensure symmetrical PCB layout with equal trace lengths and widths to both devices to promote balanced impedance. Also, verify that the combined ripple current does not exceed the thermal limits of either capacitor—especially important since tantalums are sensitive to RMS current heating. This approach is acceptable for steady-state filtering but avoid it in high-surge or pulsed-load applications without thorough thermal validation.
Can the TAJC685K020RNJ be used as a direct replacement for a failed aluminum electrolytic capacitor in a legacy power supply design originally rated for 16V operation?
Replacing an aluminum electrolytic with the TAJC685K020RNJ requires careful evaluation beyond voltage and capacitance matching. While the 20V rating exceeds the 16V rail, tantalum capacitors are far more sensitive to voltage transients and reverse polarity than aluminum types. If the legacy design lacks robust input protection (e.g., TVS diodes or bulk capacitance to absorb surges), the TAJC685K020RNJ may fail catastrophically. Additionally, its lower ESR can interact negatively with control loop stability in some switching regulators. Only proceed if you confirm transient voltages stay below 18V, add reverse-polarity protection, and validate loop stability—otherwise, consider a higher-voltage-rated tantalum (e.g., TAJC685K025RNJ) or switch to a solid polymer type for better surge tolerance.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
TAJC685K020RNJ CAD Models
KYOCERA AVX TAJC685K020RNJ PCB symbols & footprints
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