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Home > Products > Capacitors > Ceramic Capacitors > C420C681GAG5TA7200
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C420C681GAG5TA7200

In Stock 2000000 pcs Reference Price(In US Dollars)
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$0.1684
200+
$0.0652
500+
$0.0629
1000+
$0.0618
Manufacturer Part Number:
C420C681GAG5TA7200
Manufacturer / Brand
KEMET
Part of Description:
CAP CER 680PF 250V C0G/NP0 AXIAL
Datasheets:
C420C681GAG5TA7200(1).pdfC420C681GAG5TA7200(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 2000000 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number C420C681GAG5TA7200
Manufacturer / Brand KEMET
Stock Quantity 2000000 pcs Stock
Category Capacitors > Ceramic Capacitors
Description CAP CER 680PF 250V C0G/NP0 AXIAL
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Rated 250V
Tolerance ±2%
Thickness (Max) -
Temperature Coefficient C0G, NP0
Size / Dimension 0.100" Dia x 0.200" L (2.54mm x 5.08mm)
Series AxiMax 400 Comm C0G
Ratings -
Package / Case Axial
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 125°C
Mounting Type Through Hole
Lead Style Straight
Lead Spacing -
Height - Seated (Max) -
Features Low ESL
Failure Rate -
Capacitance 680 pF
Base Product Number C420C
Applications General Purpose

Packaging & ESD

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C420C681GAG5TA7200 Product Details:

The KEMET C420C681GAG5TA7200 is an axial-leaded ceramic capacitor from the AxiMax 400 Comm C0G series, offering 680 pF capacitance at 250V with ±2% tolerance. Built on C0G (NP0) dielectric technology, this component delivers near-zero temperature coefficient performance across its -55°C to 125°C operating range, making it suitable for precision timing circuits, RF applications, and filter networks where capacitance stability is non-negotiable.

The C0G dielectric eliminates piezoelectric effects and voltage coefficient variation, characteristics that distinguish it from X7R or Y5V alternatives. With a 250V rating, the C420C681GAG5TA7200 provides adequate headroom for circuits operating at standard industrial voltage levels while maintaining predictable behavior under transient conditions. The low equivalent series inductance (ESL) design minimizes parasitic effects in high-frequency applications, supporting signal integrity in bypass and coupling configurations where conventional leaded capacitors introduce unwanted phase shifts.

Physical implementation uses a through-hole axial package measuring 0.100" diameter by 0.200" length (2.54mm x 5.08mm) with straight leads, facilitating automated insertion equipment compatibility and hand assembly workflows. This form factor integrates cleanly into mixed-technology boards where surface-mount density is balanced against mechanical robustness requirements. The axial orientation supports horizontal mounting strategies that optimize board real estate in power supply stages, analog front ends, and legacy equipment retrofits.

RoHS3 compliance and REACH-unaffected status align with current environmental directives, while MSL-1 classification eliminates moisture-related storage constraints. The ±2% tolerance specification reduces the need for component screening in applications where calculated filter response or oscillator frequency must be tightly controlled without trimming. General-purpose positioning covers instrumentation, industrial controls, and communications hardware where long-term stability and thermal performance predictability drive component selection.

Active production status ensures availability for new designs and production continuity for existing platforms. The C420C base product number cross-references to multiple tolerance and voltage variants within the AxiMax 400 series, enabling design flexibility when adjusting specifications during prototype iterations or cost optimization phases. This capacitor serves circuits requiring 680pF nominal capacitance with voltage handling beyond standard 50V or 100V ratings common in consumer electronics, bridging the gap toward specialized high-voltage ceramic solutions.

C420C681GAG5TA7200 Image
C420C681GAG5TA7200 (1)

Replacement Challenges for KEMET C420C681GAG5TA7200 680 pF Axial C0G Capacitors

Replacing the KEMET C420C681GAG5TA7200 is not only a matter of matching “680 pF.” This part is a 250 V, ±2%, C0G/NP0 axial ceramic capacitor, so replacement decisions must consider capacitance tolerance, dielectric stability, voltage derating, axial body size, lead style, and assembly format. A substitute that fits the board may still introduce frequency drift, tolerance stack-up, or insufficient voltage margin.

The commonly referenced replacement and alternative part numbers for KEMET C420C681GAG5TA7200 include:

These parts are related axial ceramic capacitor options, but they are not identical replacements in every design. The correct choice depends on whether the circuit uses the capacitor for timing, filtering, RF coupling, compensation, snubbing, or general-purpose decoupling.

What Defines the KEMET C420C681GAG5TA7200 Original Component

The KEMET C420C681GAG5TA7200 belongs to the AxiMax 400 Comm C0G series and is specified as a 680 pF ceramic capacitor with ±2% tolerance, 250 V rated voltage, and C0G/NP0 temperature coefficient. It uses an axial through-hole package with straight leads, supplied in Tape & Reel packaging.

Key original characteristics:

ParameterKEMET C420C681GAG5TA7200 specificationReplacement impact
Capacitance680 pFMust match closely in timing, resonance, RF, and compensation circuits
Tolerance±2%Wider-tolerance substitutes may shift circuit behavior
Voltage rating250 VLower-voltage alternatives require derating review
DielectricC0G/NP0Provides low capacitance drift, low loss, and stable frequency behavior
Operating temperature-55°C to +125°CSuitable for industrial and commercial temperature ranges
Mounting styleThrough-hole axialReplacement must match lead-forming and board layout needs
Package size0.100" diameter x 0.200" length, approximately 2.54 mm x 5.08 mmBody clearance and lead stress should be checked
FeatureLow ESLUseful in high-frequency bypassing, pulse response, and compact axial layouts
ComplianceRoHS3 compliant, REACH unaffected, MSL 1Supports standard production and storage workflows

The C0G/NP0 dielectric is one of the main reasons this capacitor may be selected over higher-capacitance ceramic dielectrics. It offers stable capacitance over temperature, voltage, and time. Therefore, if the original capacitor is used in an oscillator, filter pole, resonant circuit, or frequency-sensitive analog network, a replacement using a different dielectric can affect performance even if the nominal capacitance is the same.

The 250 V rating also affects replacement suitability. In low-voltage signal circuits, a lower-voltage substitute may be acceptable after derating analysis. In high-impedance, transient-prone, tube, telecom, instrumentation, or high-voltage bias circuits, keeping equal or higher voltage rating is usually preferred.

Typical applications include general-purpose signal filtering, RF coupling, timing networks, impedance compensation, bypassing in through-hole assemblies, and replacement in legacy axial capacitor layouts.

Engineering Evaluation of KEMET C420C681GAG5TA7200 Replacement Part Numbers

The alternatives below should be evaluated as engineering substitutes rather than automatic drop-in equivalents. Each candidate shares the same nominal 680 pF value, but tolerance, dielectric code, voltage class, and mechanical family may differ from the KEMET C420C681GAG5TA7200.

ManufacturerPart NumberKey SpecificationsProduct FeaturesTypical ApplicationsWhy It Can Replace the Original PartMain Differences or LimitationsRecommended Usage
KEMETC420C681GAG5TA7200680 pF, ±2%, 250 V, C0G/NP0, axial through-hole, -55°C to +125°CLow ESL, stable dielectric, Tape & Reel, RoHS3RF networks, timing circuits, precision filters, compensation, general-purpose through-hole designsOriginal reference partNone as original deviceBest choice when the design depends on ±2% tolerance, 250 V rating, and C0G/NP0 stability
KEMET C410C681J1G5CA7200 C410C681J1G5CA7200 C410C681J1G5CA7200 KEMET CAP CER 680PF 100V C0G/NP0 AXIAL 142901 680 pF, J tolerance class typically ±5%, axial ceramic, C0G/NP0 indicated by G dielectric code, voltage class should be verified against the latest datasheetSimilar axial ceramic construction, stable dielectric behavior if confirmed C0G/NP0General signal filtering, coupling, non-critical timing, through-hole replacementSame nominal capacitance and compatible axial ceramic family make it a practical substitute in many layoutsWider tolerance than ±2%; voltage rating may differ from 250 V; body size may differ from C420 seriesSuitable where ±5% capacitance tolerance is acceptable and operating voltage is comfortably below the confirmed rating
KEMET C410C681K1R5CA7200 C410C681K1R5CA7200 C410C681K1R5CA7200 KEMET CAP CER 680PF 100V X7R AXIAL 461878 680 pF, K tolerance class typically ±10%, axial ceramic, R dielectric code commonly associated with X7R-type behavior, voltage class should be verifiedHigher tolerance band, ceramic axial formatBypass, general filtering, non-frequency-critical circuitsSame nominal capacitance and through-hole axial style may allow physical replacementDielectric stability may be lower than C0G/NP0; ±10% tolerance may be unsuitable for precision networks; voltage rating confirmation requiredConsider only for general-purpose filtering or decoupling where capacitance drift and tolerance are acceptable
KEMET C410C681J5G5CA7200 C410C681J5G5CA7200 C410C681J5G5CA7200 KEMET CAP CER 680PF 50V C0G/NP0 AXIAL 465734 680 pF, J tolerance class typically ±5%, axial ceramic, C0G/NP0 indicated by G dielectric code, voltage class should be checkedStable dielectric option with looser tolerance than originalSignal coupling, analog filtering, moderate-accuracy timing, legacy axial PCB serviceSame capacitance value and likely C0G/NP0 dielectric alignment support replacement in stable analog circuitsTolerance wider than original; voltage code differs from C420C681GAG5TA7200; mechanical dimensions may not be identicalGood candidate when C0G/NP0 behavior is needed but ±2% tolerance and 250 V rating are not mandatory

Among the listed substitutes, C410C681J1G5CA7200 C410C681J1G5CA7200 C410C681J1G5CA7200 KEMET CAP CER 680PF 100V C0G/NP0 AXIAL 142901 and C410C681J5G5CA7200 C410C681J5G5CA7200 C410C681J5G5CA7200 KEMET CAP CER 680PF 50V C0G/NP0 AXIAL 465734 are generally more suitable when dielectric stability matters, because their G dielectric code aligns with C0G/NP0-style selection. C410C681K1R5CA7200 C410C681K1R5CA7200 C410C681K1R5CA7200 KEMET CAP CER 680PF 100V X7R AXIAL 461878 requires more caution because the R dielectric code suggests a less stable ceramic dielectric class than C0G/NP0. That does not make it unsuitable in all cases, but it changes the replacement decision from precision substitution to general-purpose substitution.

Comparing KEMET C420C681GAG5TA7200 Alternatives for Real Circuit Decisions

The most practical way to compare replacements is to separate electrical risk from mechanical and sourcing risk. A capacitor that is acceptable in a bypass location may not be acceptable in an oscillator or tuned filter.

Evaluation factorC420C681GAG5TA7200C410C681J1G5CA7200C410C681K1R5CA7200C410C681J5G5CA7200
Electrical compatibilityBaseline: 680 pF, ±2%, 250 V, C0G/NP0Good if confirmed voltage rating is adequate; ±5% tolerance changes precision marginLimited for precision use due to ±10% tolerance and likely non-C0G dielectric behaviorGood for many C0G/NP0 applications if voltage rating is adequate
Mechanical compatibilityOriginal axial C420 body, 0.100" dia x 0.200" lengthAxial C410 family may fit many boards but body dimensions should be checkedAxial C410 family; verify body diameter, length, and lead formingAxial C410 family; verify clearance and lead stress
Performance differenceHighest precision among listed partsSlightly wider capacitance spread; stable if C0G/NP0 confirmedCapacitance may vary more with temperature, voltage, and agingStable dielectric behavior likely, but tolerance is wider than original
Reliability considerationsOriginal voltage and dielectric margin maintainedAcceptable with correct derating and thermal reviewBetter for non-critical filtering than precision or high-stability functionsAcceptable when derating and tolerance are reviewed
Package and assemblyTape & Reel axial through-holePackaging suffix differs; confirm bulk, ammo, or reel formatPackaging suffix differs; confirm production handling formatPackaging suffix differs; confirm assembly compatibility
Cost and availabilityBest technical match, but availability may varyOften attractive if ±5% tolerance is acceptableMay be cost-effective for general-purpose useUseful balance when C0G behavior is needed without ±2% precision
Best-fit scenariosPrecision timing, RF, compensation, high-voltage marginGeneral analog circuits needing stable dielectric but not ±2% accuracyDecoupling, bypassing, non-tuned filteringStable signal circuits where ±5% is acceptable
Main limitationMay be harder to source than broader-tolerance optionsNot an exact tolerance matchNot recommended for C0G-sensitive circuits without redesign validationVoltage and dimension differences must be checked

For a precision circuit, the preferred replacement path is to keep C0G/NP0 dielectric behavior first, then check tolerance and voltage rating. In that case, C410C681J1G5CA7200 C410C681J1G5CA7200 C410C681J1G5CA7200 KEMET CAP CER 680PF 100V C0G/NP0 AXIAL 142901 or C410C681J5G5CA7200 C410C681J5G5CA7200 C410C681J5G5CA7200 KEMET CAP CER 680PF 50V C0G/NP0 AXIAL 465734 may be more suitable than C410C681K1R5CA7200 C410C681K1R5CA7200 C410C681K1R5CA7200 KEMET CAP CER 680PF 100V X7R AXIAL 461878 , provided the confirmed voltage rating and mechanical dimensions meet the design requirements.

For a non-critical bypass or general-purpose filter position, C410C681K1R5CA7200 C410C681K1R5CA7200 C410C681K1R5CA7200 KEMET CAP CER 680PF 100V X7R AXIAL 461878 may be acceptable if the circuit can tolerate wider capacitance variation and possible dielectric shift. However, it should not be treated as an equal electrical substitute for the KEMET C420C681GAG5TA7200 in temperature-stable timing, RF, or precision analog networks.

Before approving any replacement, confirm the latest manufacturer datasheet, voltage derating, dielectric class, tolerance impact, lead spacing or forming requirements, and production packaging. For quotations and sourcing support for KEMET C420C681GAG5TA7200 replacement parts, use the professional electronic components website IC-Components.com or email Info@IC-Components.com.

Frequently Asked Questions

Can I use C420C681GAG5TA7200: in a high-voltage snubber or pulse network, or is the 250V rating too close for real-world transients?
C420C681GAG5TA7200: can fit low-energy snubber, timing, or filtering roles where the steady-state working voltage stays comfortably below 250V and the transient profile is well controlled. For pulse or inductive environments, it is common to derate the applied voltage to account for ringing, startup overshoot, and mains disturbances. If the circuit sees repetitive spikes, check both peak voltage and pulse energy rather than only the nominal DC level.
Is C420C681GAG5TA7200: a good choice for RF bypass or high-frequency coupling where low ESL matters?
C420C681GAG5TA7200: uses an axial C0G/NP0 ceramic construction with low ESL, so it can perform well in frequency-sensitive bypassing and coupling where stable capacitance is preferred. That said, the axial lead geometry usually has more inductance than a small surface-mount RF capacitor, so the final HF behavior depends on lead length, layout, and return path. For very fast edges or VHF/UHF decoupling, placement and loop area matter as much as the capacitor body itself.
When does C420C681GAG5TA7200: make sense instead of a surface-mount 680 pF capacitor?
C420C681GAG5TA7200: is often chosen when through-hole assembly, higher voltage margin, or easier hand rework is needed. It can be a practical replacement path in legacy boards or low-to-medium volume builds where axial parts are already used. If the design is tightly constrained for size or requires the lowest parasitics possible, an SMD option may fit better, but the mechanical and thermal trade-offs should be reviewed.
Can C420C681GAG5TA7200: replace an X7R or Y5V capacitor of the same value?
C420C681GAG5TA7200: can replace an X7R or Y5V part only if the circuit benefits from capacitance stability more than from the higher volumetric efficiency of those dielectrics. C0G/NP0 holds capacitance far better across temperature, DC bias, and aging, which helps in timing, resonant, and precision filter applications. If the original design depended on a much larger effective capacitance under bias, the actual in-circuit value may differ enough to shift filter cutoff or timing.
What should I check before swapping C420C681GAG5TA7200: for another KEMET part such as C410C681J1G5CA7200?
C420C681GAG5TA7200: and C410C681J1G5CA7200: may look similar in value, but replacement should be checked for voltage rating, package geometry, lead style, and dielectric performance under the intended operating conditions. A part number change can affect mounting fit, available creepage clearance, and long-term stress margin. Confirm whether the alternate part is intended for the same physical footprint and whether its mechanical lead form works with the existing PCB holes.
Is C420C681GAG5TA7200: suitable for precision timing circuits or resonant networks?
C420C681GAG5TA7200: is well suited to precision timing and resonant circuits because C0G/NP0 dielectric keeps capacitance variation very low over temperature and time. That makes the part behave predictably in oscillators, filters, and tuned networks where drift can move the operating point. For designs with tight frequency tolerances, the remaining variables are usually the inductor tolerance, stray capacitance, and PCB layout.
How does C420C681GAG5TA7200: behave in industrial temperature ranges and long-life equipment?
C420C681GAG5TA7200: is specified for -55°C to 125°C, which fits many industrial environments and elevated-ambient enclosures. C0G/NP0 capacitors are known for stable capacitance and low aging, so they are commonly used where long-term repeatability is needed. In practice, board-level reliability still depends on solder joint quality, vibration exposure, and how close the part runs to its voltage and thermal limits.
Can C420C681GAG5TA7200: be used in vibration-prone equipment, or is the axial lead form a concern?
C420C681GAG5TA7200: can be used in vibration-prone assemblies, but the axial through-hole form requires attention to lead support, solder fillet quality, and board anchoring. In high-vibration systems, long unsupported leads can add mechanical stress and may benefit from shorter lead length or additional PCB support features. If the application sees shock or continuous vibration, verify that the mounting scheme matches the expected mechanical environment.
What layout issues should I watch when integrating C420C681GAG5TA7200: into a high-speed or low-noise board?
C420C681GAG5TA7200: should be placed to minimize lead length and loop area, especially when it is part of a bypass, filter, or coupling network. Even with low-ESL construction, the total parasitic inductance is influenced by hole placement, trace routing, and the return current path. If the capacitor is used to suppress fast noise, keep the connection to the noisy node and the ground reference as direct as possible.
Is C420C681GAG5TA7200: a practical option for replacing discontinued axial ceramic capacitors in legacy equipment?
C420C681GAG5TA7200: is often a practical retrofit option when a legacy design already uses axial through-hole parts and the original value is 680 pF at a similar voltage class. The main checks are body length, diameter, lead spacing on the board, and whether the replacement dielectric matches the original circuit behavior. If the old part was a high-K dielectric, the new C0G/NP0 part may improve stability but also change effective capacitance under operating conditions.
Does C420C681GAG5TA7200: work well in general-purpose filter networks, or are there cases where it is the wrong choice?
C420C681GAG5TA7200: works well in general-purpose filters where stable capacitance, low loss, and moderate voltage handling are needed. It is less suited when very large capacitance is required in a small space, or when the design expects the capacitor value to vary with bias for a particular function. For low-frequency bulk filtering, an electrolytic or larger MLCC may be more practical depending on ripple and size constraints.
What must be verified for automated assembly or manual rework of C420C681GAG5TA7200?
C420C681GAG5TA7200: is a tape-and-reel axial through-hole part, so the assembly flow should match the insertion method and board hole geometry. For automated insertion, confirm lead forming, insertion depth, and any orientation requirements from the process tooling. For manual rework, the axial body is generally easy to replace, but repeated heating can still affect solder joints and adjacent components if the board has limited thermal mass.

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