The KEMET 10HV22B103KC is a 10000 pF (10 nF) radial ceramic capacitor rated for 1000V operation, designed specifically for high-voltage filtering applications in switched-mode power supplies and industrial circuits. Built on X7R dielectric technology, this component delivers stable capacitance across a wide temperature range of -55°C to 125°C, with capacitance variation held within ±10% tolerance limits. The X7R formulation maintains capacitance shift to approximately ±15% over its full operating temperature span, making it suitable for circuits where moderate stability under thermal cycling is required.
This through-hole capacitor from KEMET's HV RAD-LDD Industrial X7R HV series addresses the need for voltage blocking and ripple suppression in SMPS topologies where bus voltages approach or exceed 400V DC. The 1 kV rating provides adequate margin for snubber networks, EMI filtering stages, and input bulk capacitor applications in offline converters. The radial lead configuration with 0.275-inch (6.99mm) spacing offers straightforward PCB integration and enables automated insertion processes in volume manufacturing.
Physical dimensions measure 0.370" L x 0.250" W (9.40mm x 6.35mm) with a maximum seated height of 0.300" (7.62mm), allowing the component to fit within compact enclosures while maintaining clearance requirements dictated by high-voltage standards. Straight radial leads simplify both manual prototyping and pick-and-place operations. The X7R ceramic construction provides higher volumetric efficiency compared to film capacitors at equivalent voltage ratings, reducing board footprint in space-constrained designs.
In switched-mode power supply filtering applications, the 10HV22B103KC handles AC ripple currents superimposed on high DC bias without the large capacitance drop characteristic of Class 2 dielectrics under voltage stress. This makes it appropriate for primary-side filtering in flyback, forward, and resonant converter topologies where stable impedance across load transients contributes to loop stability and EMC compliance. The component also serves in voltage multiplier circuits, high-voltage DC-link filtering, and power factor correction stages where a balance between capacitance density and voltage capability is needed.
KEMET's HV RAD-LDD series targets industrial environments where extended temperature range qualification and consistent lot-to-lot performance are expected. The active product status and availability of 816 pieces indicate ongoing production support, reducing obsolescence risk in long-lifecycle designs. The component is classified as REACH Unaffected, confirming compliance with European substance restrictions, and carries an EAR99 ECCN designation for standard export handling.
Replacing KEMET 10HV22B103KC in High-Voltage Ceramic Capacitor Designs
When KEMET 10HV22B103KC is unavailable, approaching end-of-life in a design database, or being second-sourced for production resilience, the replacement choice cannot be based on capacitance alone. This part is a 10,000 pF, 1 kV, X7R, through-hole radial ceramic capacitor used where voltage stress, temperature stability, PCB spacing, and filtering behavior all influence circuit performance.
Potential replacement or alternative part numbers to evaluate include:
- KEMET C322C103KDG5TA
- KEMET C330C103KDG5TA
- TDK FK28X7R3A103K
- Vishay K103K15X7RF5TL2
- Murata DE1E3KX103KA4BN01F
A suitable replacement for KEMET 10HV22B103KC should be checked against voltage rating, capacitance tolerance, dielectric class, radial lead spacing, body size, operating temperature, insulation resistance, and the actual circuit function. In SMPS filtering, snubber-adjacent networks, high-voltage bias filtering, and noise suppression paths, even small differences in dielectric behavior or layout clearance can affect EMI performance, leakage margin, and long-term reliability.
What KEMET 10HV22B103KC Contributes to the Circuit Before Selecting an Equivalent
KEMET 10HV22B103KC is a high-voltage radial multilayer ceramic capacitor from the KEMET HV RAD-LDD Industrial X7R HV series. Its core specification is 10,000 pF, also expressed as 0.01 µF or 10 nF, with ±10% tolerance and a 1000 VDC rated voltage. The X7R dielectric supports operation from -55°C to +125°C, making it more stable than general-purpose Class II dielectrics such as Y5V or Z5U across temperature.
| Specification or Feature | KEMET 10HV22B103KC Value | Replacement Relevance |
|---|---|---|
| Manufacturer | KEMET | Direct KEMET alternatives may reduce qualification effort |
| Capacitance | 10000 pF / 10 nF / 0.01 µF | Replacement should normally match unless circuit tuning allows change |
| Tolerance | ±10% | Affects filter corner frequency, timing behavior, and EMI repeatability |
| Rated voltage | 1000 VDC | Replacement should meet or exceed circuit working voltage plus derating margin |
| Dielectric | X7R | Determines capacitance shift over temperature, DC bias, and aging |
| Operating temperature | -55°C to +125°C | Needed for industrial, power supply, and high-temperature assemblies |
| Mounting style | Through-hole radial | Replacement must fit PCB hole pattern and assembly process |
| Package size | 9.40 mm x 6.35 mm body, 7.62 mm max seated height | Determines mechanical clearance and spacing near high-voltage nodes |
| Lead spacing | 6.99 mm | One of the main constraints for drop-in replacement |
| Lead style | Straight | Affects insertion, forming, and wave-solder compatibility |
| Application note | SMPS filtering | Replacement must preserve impedance and withstand repetitive voltage stress |
The original component is not simply a generic 10 nF capacitor. Its 1 kVDC rating and X7R dielectric make it suitable for high-voltage filtering where capacitance stability and compact through-hole mounting are both required. In replacement work, the first screening step is usually electrical equivalence: 10 nF, ±10%, 1 kVDC or higher, and X7R or an equivalent temperature-stable dielectric.
Mechanical fit follows closely. A capacitor with the correct electrical rating but a different lead spacing may require lead forming or PCB changes. In high-voltage layouts, body size and lead spacing also influence creepage and clearance, so a smaller replacement is not automatically better. For SMPS filtering, parasitic inductance from lead length and mounting geometry can also shift high-frequency attenuation, especially when replacing a radial MLCC with a safety-disc or larger leaded ceramic alternative.
Candidate Equivalent and Alternative Parts for KEMET 10HV22B103KC Replacement
The following table compares practical candidates for replacing KEMET 10HV22B103KC. Some are closer electrical equivalents, while others are application-specific alternatives that may be suitable only after confirming safety approvals, voltage conditions, and PCB fit.
| Manufacturer | Part Number | Key Specifications | Product Features | Typical Applications | Why It Can Replace the Original Part | Main Differences or Limitations | Recommended Usage |
|---|---|---|---|---|---|---|---|
| KEMET | C322C103KDG5TA | 10 nF, ±10%, 1000 VDC, X7R, radial ceramic | KEMET radial leaded MLCC, high-voltage ceramic construction | High-voltage filtering, SMPS auxiliary filtering, general HV bypassing | Same manufacturer, same capacitance class, same voltage rating, X7R dielectric | Body size and lead spacing may differ from 10HV22B103KC; confirm footprint and seated height | Preferred KEMET alternative when electrical equivalence is required and PCB fit is verified |
| KEMET | C330C103KDG5TA | 10 nF, ±10%, 1000 VDC, X7R, radial ceramic | Larger radial ceramic format with high-voltage capability | Power supply filtering, industrial control boards, high-voltage decoupling | Matches capacitance, tolerance, voltage rating, and dielectric type | May require more board area or lead forming depending on the original footprint | Suitable when additional mechanical space is available or when a KEMET second-source style is desired |
| TDK | FK28X7R3A103K | 10 nF, ±10%, 1000 VDC, X7R, radial leaded ceramic | TDK FK series leaded multilayer ceramic capacitor | SMPS filtering, high-voltage bypass, noise suppression in industrial electronics | Closely aligned electrical ratings: 10 nF, 1 kVDC, X7R, through-hole radial | Mechanical outline and lead pitch must be compared with the KEMET footprint | Strong cross-manufacturer alternative for designs allowing supplier substitution |
| Vishay | K103K15X7RF5TL2 | 10 nF, ±10%, high-voltage X7R radial ceramic family option | Leaded multilayer ceramic capacitor with X7R dielectric | High-voltage decoupling, filtering, pulse-related low-energy networks | Provides similar capacitance and dielectric behavior in a radial format | Exact voltage, lead pitch, and approval details must be confirmed by full datasheet and ordering code | Useful when Vishay sourcing is preferred and the verified voltage rating meets or exceeds 1 kVDC |
| Murata | DE1E3KX103KA4BN01F | 10 nF, safety-certified ceramic capacitor family, radial leaded | Designed for AC line safety suppression applications depending on approval class | Line-to-line or line-to-earth noise suppression, EMI input filtering | Can be an alternative where the circuit function is mains safety EMI suppression rather than only DC high-voltage filtering | Not a direct drop-in DC X7R equivalent; voltage rating, safety class, dielectric behavior, and approvals differ from KEMET 10HV22B103KC | Use only when the design specifically needs certified safety-capacitor behavior and regulatory fit is confirmed |
Among these candidates, KEMET C322C103KDG5TA and TDK FK28X7R3A103K are generally closer to a KEMET 10HV22B103KC equivalent because they preserve the 10 nF, 1 kV, X7R, radial ceramic profile. KEMET C330C103KDG5TA is also electrically aligned but may be chosen when its body size and lead spacing suit the PCB. Vishay K103K15X7RF5TL2 can be a viable cross-reference candidate, but its full ordering code should be checked for exact rated voltage and lead configuration. Murata DE1E3KX103KA4BN01F should be treated as an application-specific alternative, mainly for safety-related EMI suppression rather than a universal replacement.
Engineering Comparison of KEMET 10HV22B103KC Replacement Options
Replacement decisions should combine datasheet alignment with circuit-level consequences. A capacitor that matches capacitance and voltage rating may still affect assembly yield, creepage distance, EMI results, or qualification effort. The table below compares the replacement options from a practical selection perspective.
| Evaluation Factor | KEMET C322C103KDG5TA | KEMET C330C103KDG5TA | TDK FK28X7R3A103K | Vishay K103K15X7RF5TL2 | Murata DE1E3KX103KA4BN01F |
|---|---|---|---|---|---|
| Electrical compatibility with KEMET 10HV22B103KC | High; same capacitance, tolerance, voltage class, and dielectric type when verified | High; electrically close to the original rating set | High; strong match for 10 nF, 1 kVDC, X7R radial use | Potentially high, subject to exact ordering-code voltage confirmation | Limited for DC X7R replacement; better for safety EMI functions |
| Mechanical compatibility | Must confirm lead spacing and body dimensions | May be larger than the original; footprint check required | Requires comparison of lead pitch, body width, and seated height | Lead pitch and body form depend on selected version | Usually different body style and spacing behavior versus radial MLCC |
| Performance differences | Likely small if same voltage and dielectric grade are confirmed | Similar electrical behavior, possible lower mechanical stress if larger body has more spacing | Comparable X7R temperature behavior; DC bias curves should be reviewed | Comparable only if voltage and dielectric are confirmed | Dielectric and safety construction may change capacitance stability and impedance behavior |
| Reliability considerations | Same manufacturer ecosystem may simplify approval | Larger package may improve voltage spacing but can add mechanical constraints | Reputable alternate supplier; qualification testing still advised | Good option with confirmed voltage derating and supplier documentation | Safety approvals may improve regulatory suitability but do not replace DC-rating analysis |
| Package availability | Common KEMET radial ceramic family availability varies by distributor | Availability depends on size and lead configuration | TDK FK series may be suitable for alternate sourcing | Useful for supplier diversification if exact part is stocked | Often stocked for EMI/safety applications, not necessarily for same design role |
| Cost considerations | Usually reasonable if stocked; same-brand sourcing may reduce validation cost | May cost more if larger or lower-volume configuration | Competitive cross-source option | Pricing depends on exact voltage and leaded package variant | May be higher due to safety approvals |
| Best-fit application scenario | Direct replacement path for high-voltage DC filtering | Designs with enough board space needing same electrical class | Cross-manufacturer second source for SMPS filtering and HV bypass | Alternative sourcing when Vishay part validation is complete | AC mains EMI suppression where safety certification is required |
| Advantages | Minimal electrical change from original KEMET 10HV22B103KC | Maintains KEMET ceramic technology and 1 kV X7R class | Good balance of electrical match and supplier diversity | Adds another approved manufacturer option | Provides safety-capacitor suitability for regulated AC interfaces |
| Limitations | Not automatically footprint-identical | Mechanical size may prevent drop-in use | Requires layout verification | Must verify complete part code before approval | Not a general equivalent for 1 kVDC X7R radial MLCC replacement |
For a drop-in or near drop-in replacement of KEMET 10HV22B103KC, start with KEMET C322C103KDG5TA, KEMET C330C103KDG5TA, and TDK FK28X7R3A103K. These candidates most closely preserve the original capacitor’s electrical role as a 10 nF, 1 kV, X7R, through-hole radial ceramic capacitor. Vishay K103K15X7RF5TL2 can broaden sourcing options if the exact ordering code confirms the required voltage rating and radial footprint. Murata DE1E3KX103KA4BN01F should be evaluated only when the capacitor is used in an AC line suppression position where safety certification changes the selection criteria.
Before approving any replacement, compare the datasheet drawings, lead spacing, voltage derating curve, insulation resistance, dielectric aging behavior, soldering profile, and circuit stress conditions. For SMPS filtering, bench validation should include ripple voltage, temperature rise, EMI scan comparison, and visual inspection after soldering.
For quotations and availability checks on KEMET 10HV22B103KC replacement parts, suitable equivalents, or alternative high-voltage ceramic capacitors, obtain pricing through IC-Components.com or contact Info@IC-Components.com.
