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Knowles Syfer
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0603J0250221KFT

In Stock 2000000 pcs Reference Price(In US Dollars)
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200+
$0.0685
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$0.066
1000+
$0.0649
Manufacturer Part Number:
0603J0250221KFT
Manufacturer / Brand
Knowles Syfer
Part of Description:
CAP CER 220PF 25V C0G/NP0 0603
Datasheets:
0603J0250221KFT(1).pdf0603J0250221KFT(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 0603J0250221KFT
Manufacturer / Brand Knowles Syfer
Stock Quantity 2000000 pcs Stock
Category Capacitors > Ceramic Capacitors
Description CAP CER 220PF 25V C0G/NP0 0603
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Rated 25V
Tolerance ±10%
Thickness (Max) 0.031' (0.80mm)
Temperature Coefficient C0G, NP0
Size / Dimension 0.063' L x 0.031' W (1.60mm x 0.80mm)
Series -
Ratings -
Package / Case 0603 (1608 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 125°C
Mounting Type Surface Mount, MLCC
Lead Style -
Lead Spacing -
Height - Seated (Max) -
Features High Temperature
Failure Rate -
Capacitance 220 pF
Base Product Number 0603J
Applications High Reliability

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

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Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
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0603J0250221KFT Product Details:

The Knowles Syfer 0603J0250221KFT is a 220pF ceramic capacitor built on C0G (NP0) dielectric technology, rated for 25V operation with ±10% capacitance tolerance. This surface-mount multilayer ceramic capacitor (MLCC) delivers the temperature stability and low loss characteristics inherent to C0G dielectrics, maintaining near-zero capacitance drift across its -55°C to 125°C operating range—a performance profile suited to precision analog circuits, RF signal paths, and timing applications where predictable behavior under thermal cycling matters.

The C0G dielectric formulation provides a temperature coefficient effectively at 0 ppm/°C, distinguishing this capacitor from higher-permittivity Class II dielectrics that exhibit voltage and temperature-dependent capacitance shifts. This stability extends to frequency response, where C0G capacitors maintain low dissipation factor and high Q across broad bandwidths, making the 0603J0250221KFT applicable in filter networks, resonant circuits, and impedance matching stages where component drift would degrade system performance. The 220pF value occupies a commonly specified range for decoupling high-frequency noise, DC blocking in RF chains, and tuning elements in oscillator designs.

Packaged in the standard 0603 (1.60mm × 0.80mm) footprint with 0.80mm maximum thickness, this component integrates into space-constrained PCB layouts while supporting automated pick-and-place assembly. The high-temperature qualification and high-reliability application designation reflect construction suitable for automotive electronics, industrial control systems, and instrumentation where extended operational life and stable electrical characteristics under environmental stress are design requirements. MSL-1 rating eliminates floor-life restrictions during assembly, and RoHS3/REACH compliance supports global manufacturing requirements.

The 25V rating provides adequate margin for 12V and lower voltage rails common in embedded systems, communications infrastructure, and power conversion circuits. When used in decoupling roles, the low equivalent series resistance (ESR) and equivalent series inductance (ESL) typical of C0G MLCCs contribute to effective noise suppression at frequencies where capacitive reactance becomes dominant. In precision measurement front-ends or ADC/DAC signal conditioning paths, the dielectric's linear behavior eliminates distortion mechanisms that compromise signal integrity in voltage-dependent capacitors.

This ceramic capacitor serves designers working on RF modules, sensor interfaces, precision analog signal chains, and frequency-stabilized sources where component-level stability directly influences system-level accuracy and repeatability. The combination of compact surface-mount form factor, proven C0G dielectric performance, and qualification for demanding thermal environments positions the 0603J0250221KFT as a standard passive component choice across industrial, telecommunications, and precision measurement applications.

0603J0250221KFT Image
0603J0250221KFT (1)

Replacing Knowles Syfer 0603J0250221KFT When a 220 pF 25 V C0G 0603 MLCC Is Hard to Source

Finding a compatible replacement for Knowles Syfer 0603J0250221KFT is usually not difficult by capacitance alone, but it becomes more selective when the circuit depends on C0G/NP0 stability, 0603 placement compatibility, voltage margin, tolerance, solderability, and long-term availability. A 220 pF capacitor may be used in RF matching, timing, filtering, coupling, snubber trimming, or high-reliability signal paths, where replacing it with a different dielectric or footprint can shift circuit behavior.

Potential equivalent or alternative part numbers for 0603J0250221KFT include:

These candidates are selected because they are based on the same general requirement: 220 pF capacitance, C0G/NP0 Class I ceramic dielectric, surface-mount MLCC construction, and a 0603 / 1608 metric package. The final choice should be made by checking voltage rating, tolerance, height, termination finish, reel format, qualification level, and the circuit’s sensitivity to parasitic behavior.

What Knowles Syfer 0603J0250221KFT Provides in the Original Circuit

Knowles Syfer 0603J0250221KFT is a 220 pF multilayer ceramic capacitor with ±10% tolerance, 25 V rated voltage, and C0G/NP0 temperature coefficient in a 0603 package. Its mechanical size is 1.60 mm x 0.80 mm with a maximum thickness of about 0.80 mm. It is a surface-mount MLCC intended for high-reliability applications and operates across -55°C to +125°C. The part is RoHS3 compliant, REACH unaffected, and MSL 1, which simplifies storage and assembly handling.

Specification / AttributeKnowles Syfer 0603J0250221KFTReplacement-Relevant Meaning
ManufacturerKnowles SyferReplacement should be evaluated against Syfer’s reliability expectations, not only nominal capacitance
Capacitance220 pFMust remain close if used in RF tuning, filters, oscillators, or impedance networks
Tolerance±10%±10% alternatives are direct; ±5% options may be acceptable or preferable if the circuit allows tighter nominal spread
Rated voltage25 VEqual or higher voltage rating is usually acceptable if package and electrical behavior remain compatible
DielectricC0G / NP0Replacement should not use X7R, X5R, or Y5V where capacitance stability, Q, or low loss matters
Package0603 / 1608 metricSame footprint supports existing PCB pads and automated assembly
Operating temperature-55°C to +125°CAlternatives should match this range for industrial and high-reliability environments
Mounting typeSurface mount MLCCMust fit reflow process and pick-and-place requirements
Application profileHigh reliabilityFavors stable dielectric, reputable manufacturers, and controlled sourcing

The most influential replacement factor is the C0G/NP0 dielectric. Unlike high-K dielectrics, C0G capacitors show minimal capacitance change over temperature, voltage, and aging. This is why a 220 pF C0G 0603 capacitor replacement should not be selected from general-purpose X7R stock unless the circuit function has been reviewed.

In RF and precision analog circuits, equivalent series resistance, equivalent series inductance, self-resonant frequency, and Q factor may affect performance even when capacitance and voltage match. In general filtering or coupling applications, tolerance and voltage rating may dominate the decision. In automated assembly, the 0603 body size and compatible termination finish reduce layout and manufacturing risk.

Candidate Equivalent Parts for 0603J0250221KFT and How They Compare Technically

The following candidate parts are practical substitutes for Knowles Syfer 0603J0250221KFT when a 220 pF 25 V C0G/NP0 0603 MLCC replacement is required. Some alternatives match the original closely, while others offer higher voltage rating or tighter tolerance that may be useful depending on the circuit.

ManufacturerPart NumberKey SpecificationsProduct FeaturesTypical ApplicationsWhy It Can Replace the Original PartMain Differences or LimitationsRecommended Usage
Knowles Syfer 0603J0500221KFT 0603J0500221KFT 0603J0500221KFT Knowles Syfer CAP CER 220PF 50V C0G/NP0 0603 541706 220 pF, ±10%, 50 V, C0G/NP0, 0603Same manufacturer family, higher voltage rating, stable Class I dielectricHigh-reliability filtering, RF networks, precision timing, industrial electronicsSame capacitance, same tolerance class, same dielectric type, same package, higher voltage marginHigher voltage version may have slightly different availability, price, or internal constructionStrong first choice when same-brand continuity and higher voltage headroom are preferred
KEMET C0603C221K3GACTU C0603C221K3GACTU C0603C221K3GACTU KEMET CAP CER 220PF 25V NP0 0603 2000000 220 pF, ±10%, 25 V, C0G, 0603Commercial-grade C0G MLCC, common global availabilitySignal filtering, timing, RF bypass, impedance matchingMatches capacitance, tolerance, voltage, dielectric, and footprint closelyQualification level and reliability documentation may differ from Knowles Syfer requirementsSuitable for direct electrical replacement in most standard 25 V C0G 0603 designs
MurataGRM1885C1E221KA01D220 pF, ±10%, 25 V, C0G, 0603Widely used MLCC series, stable capacitance, mature supply baseRF modules, analog signal paths, general precision decouplingSame nominal value, voltage rating, dielectric class, and 1608 metric sizeRF parasitics and thickness should be verified in frequency-sensitive circuitsGood option where supply continuity and broad distributor availability matter
TDKC1608C0G1E221K080AA220 pF, ±10%, 25 V, C0G, 1608 metricStable temperature coefficient, 0.80 mm height class, standard SMD MLCCIndustrial controls, communication circuits, precision filtersMatches the original electrical class and package sizeManufacturer-specific impedance and Q curves may differRecommended for designs needing a mainstream 0603 C0G replacement with standard assembly compatibility
KYOCERA AVX 06033A221KAT2A 06033A221KAT2A 06033A221KAT2A KYOCERA AVX CAP CER 220PF 25V C0G/NP0 0603 2000000 220 pF, ±10%, 25 V, C0G/NP0, 0603Established NP0 MLCC platform, tape-and-reel availabilityRF tuning, timing capacitors, filters, stable couplingDirect match on capacitance, tolerance, voltage class, dielectric, and footprintCheck exact termination and packaging suffix for production requirementsPractical substitute for direct BOM alternates and second-source qualification
Johanson Technology500R07N221KV4T220 pF, ±10%, 50 V, C0G/NP0, 0603RF-oriented MLCC family, higher voltage rating, stable dielectricRF matching, antennas, resonant circuits, high-frequency signal pathsSame capacitance, same tolerance, same package, higher voltage rating50 V rating and RF-focused construction may affect cost and availabilityBest suited when the capacitor operates in RF or impedance-sensitive networks

For the closest like-for-like replacement, KEMET C0603C221K3GACTU C0603C221K3GACTU C0603C221K3GACTU KEMET CAP CER 220PF 25V NP0 0603 2000000 , Murata GRM1885C1E221KA01D, TDK C1608C0G1E221K080AA, and KYOCERA AVX 06033A221KAT2A 06033A221KAT2A 06033A221KAT2A KYOCERA AVX CAP CER 220PF 25V C0G/NP0 0603 2000000 are strong candidates because they preserve the 220 pF, ±10%, 25 V, C0G/NP0, 0603 profile. Knowles Syfer 0603J0500221KFT 0603J0500221KFT 0603J0500221KFT Knowles Syfer CAP CER 220PF 50V C0G/NP0 0603 541706 and Johanson Technology 500R07N221KV4T are higher-voltage alternatives, useful when derating margin or RF behavior is more desirable than a strict 25 V match.

Engineering Trade-Offs When Choosing a 0603J0250221KFT Replacement

A replacement capacitor should be selected by matching the circuit function first, then confirming datasheet and manufacturing compatibility. For a 220 pF C0G 0603 MLCC, the main decision points are dielectric stability, voltage rating, tolerance, parasitic performance, package fit, and supply risk.

Decision FactorKnowles Syfer 0603J0500221KFTKEMET C0603C221K3GACTUMurata GRM1885C1E221KA01DTDK C1608C0G1E221K080AAKYOCERA AVX 06033A221KAT2AJohanson Technology 500R07N221KV4T
Electrical compatibilityStrong; same value and tolerance with higher voltageStrong; close 25 V direct matchStrong; close 25 V direct matchStrong; close 25 V direct matchStrong; close 25 V direct matchStrong; same value with higher voltage
Mechanical compatibility0603 package supports original footprint0603 package supports original footprint0603 / 1608 metric package supports original footprint1608 metric package supports original footprint0603 package supports original footprint0603 package supports original footprint
Performance differencesHigher voltage margin may improve deratingGeneral-purpose C0G behavior suitable for many circuitsBroadly used stable MLCC; verify RF curves if neededPredictable C0G stability; verify impedance profileGood NP0 option for stable analog/RF useRF-oriented option may offer favorable high-frequency behavior
Reliability considerationsSame-brand continuity may simplify approvalSuitable for commercial and industrial designs depending on qualification needsStrong supply ecosystem and consistent production baseEstablished MLCC manufacturer with broad usageEstablished MLCC manufacturer for second-source planningGood for RF designs; confirm qualification requirements
Package availabilityMay depend on Knowles Syfer stock and voltage variantOften widely availableOften widely availableOften widely availableCommon as AVX/KYOCERA MLCC stockAvailability may be more application-channel dependent
Cost considerationsMay cost more than standard 25 V alternativesUsually competitive for standard 0603 C0GUsually competitive, depending on reel quantityUsually competitive in production volumesCompetitive as a second-source MLCCMay cost more if selected for RF performance
Best-fit applicationSame-brand replacement with voltage headroomGeneral direct replacement for 25 V designsHigh-volume designs needing broad sourcingIndustrial or communication boards needing stable C0GBOM alternates and second-source qualificationRF matching, resonant circuits, impedance-sensitive paths
Main limitationNot an exact voltage match if strict 25 V BOM control is requiredMay not satisfy enhanced reliability documentation needsManufacturer-specific parasitics require review in tuned circuitsDatasheet curves should be checked for RF behaviorSuffix and packaging must match purchasing needsHigher voltage/RF focus may be unnecessary for simple filtering

For the closest electrical and BOM-level substitute, KEMET C0603C221K3GACTU C0603C221K3GACTU C0603C221K3GACTU KEMET CAP CER 220PF 25V NP0 0603 2000000 , Murata GRM1885C1E221KA01D, TDK C1608C0G1E221K080AA, and KYOCERA AVX 06033A221KAT2A 06033A221KAT2A 06033A221KAT2A KYOCERA AVX CAP CER 220PF 25V C0G/NP0 0603 2000000 should be evaluated first because they align with the original 25 V rating. If the design benefits from additional voltage derating, Knowles Syfer 0603J0500221KFT 0603J0500221KFT 0603J0500221KFT Knowles Syfer CAP CER 220PF 50V C0G/NP0 0603 541706 is attractive because it keeps the part within the same manufacturer family. If the capacitor is used in RF matching or resonant circuitry, Johanson Technology 500R07N221KV4T may be worth evaluating due to its RF-oriented product positioning.

Before approval, confirm the latest datasheet values for capacitance tolerance, rated voltage, dielectric code, thickness, termination, packaging suffix, operating temperature, and reflow compatibility. For frequency-sensitive circuits, compare impedance, Q factor, ESR, ESL, and self-resonant frequency rather than relying only on capacitance and case size.

For quotations and availability of Knowles Syfer 0603J0250221KFT replacement parts, including C0603C221K3GACTU C0603C221K3GACTU C0603C221K3GACTU KEMET CAP CER 220PF 25V NP0 0603 2000000 , GRM1885C1E221KA01D, C1608C0G1E221K080AA, 06033A221KAT2A 06033A221KAT2A 06033A221KAT2A KYOCERA AVX CAP CER 220PF 25V C0G/NP0 0603 2000000 , 0603J0500221KFT 0603J0500221KFT 0603J0500221KFT Knowles Syfer CAP CER 220PF 50V C0G/NP0 0603 541706 , and 500R07N221KV4T, request pricing through IC-Components.com or email Info@IC-Components.com.

Frequently Asked Questions

Can I use 0603J0250221KFT as an RF or timing capacitor where stable capacitance is critical?
Yes. 0603J0250221KFT uses C0G/NP0 dielectric, so its capacitance is very stable with temperature, voltage, and time compared with X7R or Y5V parts. That makes 0603J0250221KFT suitable for resonant networks, timing circuits, filters, matching networks, and other designs where predictable capacitance behavior matters.
Is 0603J0250221KFT a good choice if my circuit sees DC bias or small-signal AC only?
0603J0250221KFT is well suited for circuits where the capacitor must keep nearly the same value under operating bias. Its C0G/NP0 dielectric has negligible DC bias derating in normal use, so it is often selected for precision analog stages, oscillators, and impedance-sensitive nodes.
Can 0603J0250221KFT replace an X7R or X5R capacitor directly?
In many layouts, 0603J0250221KFT can fit physically as a 0603 replacement, but the electrical behavior is different. Compared with X7R or X5R, 0603J0250221KFT has lower capacitance per case size and a more stable capacitance value. If the original design relied on high bulk capacitance for decoupling or energy storage, the 220 pF value may not provide equivalent function.
Will 0603J0250221KFT work in a high-frequency filter or matching network?
0603J0250221KFT is often used in high-frequency circuits because C0G/NP0 capacitors have low loss and stable dielectric behavior. For filter or matching-network use, the final performance will still depend on layout parasitics, pad geometry, and the capacitor’s self-resonant behavior in your target frequency range.
Is 0603J0250221KFT suitable for industrial temperature environments from -55°C to 125°C?
Yes. 0603J0250221KFT is specified for -55°C to 125°C, which aligns with many industrial and harsh-environment designs. In long-term deployments, the C0G/NP0 dielectric helps keep capacitance drift low across temperature cycling, which is useful in sensor, control, and communications equipment.
What should I check before using 0603J0250221KFT in a 25V rail or transient-prone node?
0603J0250221KFT is rated for 25V DC, so the actual node voltage should stay within margin when DC level, ripple, and transients are considered together. In circuits with ringing, hot-plug events, or inductive spikes, designers usually verify peak voltage on the capacitor rather than nominal rail voltage alone.
Can 0603J0250221KFT be used for decoupling power rails on ICs?
It can be used for local high-frequency decoupling where only a small capacitance is needed, such as RF ICs, PLLs, or very fast signal nodes. For standard power-rail bypassing, 0603J0250221KFT’s 220 pF value is typically too small to replace the role of nF or µF capacitors used for bulk and mid-frequency decoupling.
If I need a drop-in substitute for 0603J0250221KFT, what electrical and mechanical limits should I compare?
For a substitute to 0603J0250221KFT, compare capacitance, tolerance, dielectric type, voltage rating, package size, and temperature range. A part with the same 0603 footprint and C0G/NP0 dielectric is the closest functional alternative, but different vendors may vary in availability, tolerance options, and qualification level.
How does 0603J0250221KFT compare with a 220 pF capacitor in a different dielectric such as X7R?
0603J0250221KFT will usually provide more stable capacitance, lower dissipation, and better predictability than an X7R part at the same nominal value. An X7R capacitor can be acceptable when size or capacitance density is the main constraint, but it may show more variation with bias, temperature, and aging than 0603J0250221KFT.
Are there layout considerations when placing 0603J0250221KFT in a precision analog or RF design?
Yes. For 0603J0250221KFT, short traces, symmetric pad geometry, and a clean return path help preserve the intended capacitance behavior at high frequency. In RF or fast edge-rate circuits, the parasitic inductance of the land pattern can affect the result as much as the capacitor value itself.
Can 0603J0250221KFT be used in long-life equipment where capacitance drift over time is a concern?
Yes. 0603J0250221KFT uses a C0G/NP0 dielectric, which is known for very low aging compared with high-K ceramic dielectrics. That makes it a practical choice for equipment expected to run for years without recalibration, such as instrumentation, telecom, and industrial control systems.
Is 0603J0250221KFT appropriate for replacing an older leaded ceramic capacitor in a compact redesign?
0603J0250221KFT can be a practical replacement if the original circuit only needs 220 pF and the redesign can use surface-mount assembly. The main design checks are pad layout, pick-and-place compatibility, and whether the original leaded part had different parasitics that affected the circuit at high frequency.
What happens if 0603J0250221KFT is used in a circuit that sees mechanical stress or board flex?
0603J0250221KFT is a small 0603 MLCC, so it generally tolerates board flex better than larger ceramic packages, but mechanical stress can still cause cracks if the PCB bends near the part. Designers often reduce risk by placing the capacitor away from board edges, cutouts, and high-stress mounting points.
Is 0603J0250221KFT suitable for new designs that may later need a different capacitance value?
0603J0250221KFT is a fixed 220 pF component, so designs that may require tuning are often laid out with space for alternate values or optional footprints. This is common in RF matching, oscillator trim, and EMI filter development, where the final value may change during validation.
Can 0603J0250221KFT be used as a replacement for a 0603 220 pF capacitor from another manufacturer?
Often yes, but 0603J0250221KFT should be matched not only by value and case size, but also by dielectric, tolerance, voltage rating, and qualification level. In stable analog or RF circuits, those details can affect tuning margin, insertion loss, and production consistency more than the nominal capacitance alone.

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0603J0250221KFT

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