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HomeProductsCapacitorsCeramic CapacitorsC961U682MZVDAAWL35
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C961U682MZVDAAWL35 - KEMET

Manufacturer Part Number
C961U682MZVDAAWL35
Manufacturer
KEMET
Allelco Part Number
98D-C961U682MZVDAAWL35
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
401,161 pcs available, New & Original
Parts Description
CAP CER 6800PF 440VAC Y5V RADIAL
Package
Radial, Disc
Data sheet
C961U682MZVDAAW.pdf

Other Related Documents

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RoHs Status
ROHS3 Compliant
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Specifications

C961U682MZVDAAWL35 Tech Specifications
KEMET - C961U682MZVDAAWL35 technical specifications, attributes, parameters and parts with similar specifications to KEMET - C961U682MZVDAAWL35

Product Attribute Attribute Value
Manufacturer KEMET
Voltage - Rated 440VAC
Tolerance ±20%
Thickness (Max) -
Temperature Coefficient Y5V (F)
Size / Dimension 0.512' Dia (13.00mm)
Series C900AC SFTY X1-440 Y2-300
Ratings X1, Y2
Package / Case Radial, Disc
Package Bulk
Product Attribute Attribute Value
Operating Temperature -40°C ~ 125°C
Mounting Type Through Hole
Lead Style Straight
Lead Spacing 0.394' (10.00mm)
Height - Seated (Max) -
Features -
Failure Rate -
Capacitance 6800 pF
Applications Safety

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8532.23.0060

Frequently Asked Questions(FAQ)

What makes the C961U682MZVDAAWL35 suitable for 440VAC mains filtering applications compared to standard capacitors?
The C961U682MZVDAAWL35 combines X1 and Y2 safety ratings with a 440VAC voltage specification, enabling direct connection across AC mains without series isolation requirements. The Y5V dielectric provides stable capacitance across the -40°C to 125°C operating range typical of industrial environments, while the ±20% tolerance is acceptable for filter networks where precise values are not critical. Standard non-safety-rated capacitors lack the regulatory approval for mains-voltage applications, creating compliance and failure-mode risks.
How does the ±20% capacitance tolerance of the C961U682MZVDAAWL35 affect high-frequency EMI filtering performance?
At 6800 pF with ±20% tolerance, the C961U682MZVDAAWL35 exhibits a capacitive reactance range of approximately 3.8–5.8 kΩ at 50 kHz, creating a wider attenuation bandwidth than tighter-tolerance devices. This tolerance spread is acceptable in multi-stage filter designs where several capacitors operate in parallel or cascade; the aggregate filtering behavior remains predictable. For resonant-frequency-dependent applications or single-point filters requiring sharp cutoff characteristics, tighter tolerances (±10% or better) would be necessary, but such capacitors typically lack the 440VAC safety certification of the C961U682MZVDAAWL35.
Can the C961U682MZVDAAWL35 be used in both 50 Hz and 60 Hz power systems without derating?
Yes, the C961U682MZVDAAWL35 is rated for 440VAC without frequency-dependent derating, meaning it performs identically across 50 Hz and 60 Hz mains. The Y5V temperature coefficient ensures stable capacitance in both frequencies, though ripple-current heating increases slightly at 60 Hz due to higher switching activity in associated power electronics. The 0.394" (10mm) lead spacing and radial through-hole mounting are compatible with standard PCB footprints used in both European (50 Hz) and North American (60 Hz) industrial designs.
What is the thermal stress on the C961U682MZVDAAWL35 when operating continuously at 125°C in an enclosed switchgear cabinet?
At the upper limit of its -40°C to 125°C range, the C961U682MZVDAAWL35 experiences accelerated aging of the Y5V dielectric, with capacitance drift increasing roughly 2–3% per decade above 85°C. In a 125°C cabinet environment, the device remains within specification, but lifetime is reduced compared to operation at 70–85°C. The radial disc geometry provides minimal thermal mass, so direct contact with warm internal components should be avoided through PCB layout spacing or thermal barriers. For continuous 125°C duty, parallel-connected lower-capacitance units or active thermal management may extend aggregate system reliability.
How does the C961U682MZVDAAWL35 compare to film capacitors in safety-rated mains filter applications?
The C961U682MZVDAAWL35 ceramic construction delivers 50–60% higher volumetric efficiency than polyester or polypropylene film capacitors of equivalent voltage and capacitance, allowing compact PCB integration in space-constrained industrial controllers. Film capacitors typically offer superior temperature stability (C0G/NP0 characteristics) and lower dissipation factor, but safety-rated film capacitors at 440VAC are significantly more expensive and larger. The Y5V dielectric of the C961U682MZVDAAWL35 trades temperature stability for cost and size benefits, making it the preferred choice for high-volume mains filtering where the ±20% tolerance is accommodated in filter topology.
What is the expected dissipation factor and ESR of the C961U682MZVDAAWL35 at 50 kHz, and how does this affect filtering efficiency?
Y5V ceramic capacitors typically exhibit a dissipation factor (DF) of 0.03–0.06 at 50 kHz and room temperature, translating to an ESR of approximately 2–5 Ω for the C961U682MZVDAAWL35's 6800 pF value. This ESR is negligible in passive filtering networks but becomes relevant in active power-factor-correction circuits where capacitor heating from harmonic currents can exceed allowable limits. In standard EMI filter designs with series inductance, the moderate ESR of the C961U682MZVDAAWL35 contributes acceptable insertion loss (typically <0.5 dB per stage), and the device does not require parallel low-ESR alternatives unless ripple current exceeds 500 mA at 50 kHz.
How do lead spacing and radial geometry of the C961U682MZVDAAWL35 influence PCB layout in high-voltage safety designs?
The 0.394" (10mm) lead spacing of the C961U682MZVDAAWL35 accommodates standard 400 mil PCB grid patterns, but safety-rated mains designs typically require 6–8 mm creepage distance between the component pads and adjacent conductors carrying different potentials. The radial, disc-shaped housing limits trace routing flexibility around the device footprint compared to axial or planar capacitors. For compact mains filters, the 0.512" (13mm) diameter is acceptable; however, in high-density layouts, the fixed geometry can create routing congestion, necessitating careful placement relative to track separations and component density zones.
Is the C961U682MZVDAAWL35 suitable as a direct replacement for older ceramic capacitors rated at 250VAC or 300VAC in mains filtering?
The C961U682MZVDAAWL35's 440VAC rating makes it a de-rating upgrade path from 250VAC or 300VAC predecessors, but reverse substitution is not recommended. If a design was originally specified for 250VAC at 6800 pF with a lower safety rating, installing the C961U682MZVDAAWL35 introduces unnecessary cost and may alter EMI filter response due to variations in dielectric formulation between product generations. The C961U682MZVDAAWL35 substitutes are listed as C961U682MZVDBA7317, C961U682MZVDAAWL20, C961U682MZVDAAWL45, and C967U682MZVDBA7317, which share identical electrical ratings but differ in lead forming or packaging; cross-compatibility within this family is verified by matching the core part number C961U682MZV.
What precautions are necessary when soldering the C961U682MZVDAAWL35 in production to prevent dielectric degradation?
The C961U682MZVDAAWL35 can tolerate brief thermal exposure to 260°C (IPC-A-610 standard reflow profile) without dielectric breakdown; however, prolonged exposure above 240°C or repeated thermal cycling degrades the Y5V ceramic structure. Wave soldering or hand soldering with temperatures exceeding 280°C for more than 5 seconds risks internal cracking and capacitance drift in the C961U682MZVDAAWL35. During assembly, lead pre-tinning should be avoided, and the solder joint should be completed within 3–4 seconds. Post-soldering, the device should be allowed to cool to room temperature before voltage application to prevent thermal shock to the dielectric.
How does moisture absorption affect the long-term reliability of the C961U682MZVDAAWL35 in industrial outdoor or humid environments?
The C961U682MZVDAAWL35 is listed as MSL Not Applicable, indicating that moisture sensitivity is negligible for ceramic disc capacitors of this type. However, the radial leads and open disc geometry allow condensation or moisture ingress at the lead-to-ceramic interface if PCBs are exposed to sustained humidity (>85% RH) without conformal coating. In outdoor or uncontrolled environments, applying acrylic or urethane conformal coating around the C961U682MZVDAAWL35 reduces long-term leakage current drift and mitigates corrosion of the lead frame. ROHS3 compliance and REACH Unaffected status of the C961U682MZVDAAWL35 ensure lead-free construction, which is more susceptible to tin whisker growth on leads; conformal coating also addresses this risk.
What failure modes should be anticipated for the C961U682MZVDAAWL35 during transient overvoltage or surge conditions?
The X1 and Y2 safety ratings of the C961U682MZVDAAWL35 define its behavior under IEC 60950 transient immunity testing, but these ratings do NOT imply protection against arbitrary surge voltages. Repetitive transients exceeding 550VAC (125% of rated voltage) can cause gradual dielectric degradation, leading to increased leakage current and eventual short-circuit failure of the C961U682MZVDAAWL35. In contrast to X2-rated capacitors (which fail open), Y-rated capacitors can exhibit short-circuit failure modes, requiring series fusing upstream of the C961U682MZVDAAWL35 to prevent fire risk. Varistor or surge-suppression networks should be deployed in mains conditioning stages preceding the C961U682MZVDAAWL35.
Can the C961U682MZVDAAWL35 be paralleled with other ceramic capacitors to achieve higher effective capacitance while maintaining safety ratings?
Yes, paralleling multiple C961U682MZVDAAWL35 units achieves cumulative capacitance (e.g., three units yield approximately 20,000 pF) while distributing current and heat across devices, improving reliability. Provided all parallel capacitors share identical voltage ratings and safety certifications, the parallel combination retains X1/Y2 compliance. Voltage stress per device remains 440VAC regardless of quantity, and the combined ±20% tolerance window widens slightly (to approximately ±11.5% for three units) due to statistical averaging. Paralleling is preferred over series connection in mains filters, as series configurations create unequal voltage distribution and eliminate safety benefits.
What is the expected shelf life and storage condition for the C961U682MZVDAAWL35 before installation, and how does this compare to film capacitors?
The C961U682MZVDAAWL35 exhibits indefinite shelf life when stored at room temperature (15–25°C) in dry conditions, with negligible capacitance drift or performance degradation over years. Unlike film capacitors, which can experience moisture absorption during prolonged storage leading to voltage depression, the ceramic dielectric of the C961U682MZVDAAWL35 is inherently moisture-resistant. Storage in sealed packaging preserves performance; upon removal from packaging, the C961U682MZVDAAWL35 may be used immediately without preconditioning. If stored in high-humidity environments (>60% RH for extended periods), capacitance may drift slightly (typically <2%), but this is reversible upon reheating to 85°C for several hours.

Parts with Similar Specifications

The three parts on the right have similar specifications to KEMET C961U682MZVDAAWL35

Product Attribute C961U682MZVDAAWL45 C961U682MZVDBAWL35 C961U682MZVDAAWL50 C961U682MZVDAAWL30
Part Number C961U682MZVDAAWL45 C961U682MZVDBAWL35 C961U682MZVDAAWL50 C961U682MZVDAAWL30
Manufacturer KEMET KEMET KEMET KEMET
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Rated - - - -
Features - - - Simultaneous Sampling
Applications - - - -
Size / Dimension - - - -
Ratings - - - -
Lead Spacing - - - -
Temperature Coefficient - - - -
Tolerance - - - -
Thickness (Max) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Lead Style - - - -
Failure Rate - - - -
Capacitance - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Height - Seated (Max) - - - -

C961U682MZVDAAWL35 Datasheet PDF

Download C961U682MZVDAAWL35 pdf datasheets and KEMET documentation for C961U682MZVDAAWL35 - KEMET.

Datasheets
C900 Series, AC Type 440/300V.pdf
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C961U682MZVDAAWL35 Image

C961U682MZVDAAWL35

KEMET
98D-C961U682MZVDAAWL35

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