06031C103K4T2A - 10nF 100V X7R 0603 MLCC | KYOCERA AVX
MPN: 06031C103K4T2A β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.02 | $0.02 |
| 10 | $0.012 | $0.12 |
| 100 | $0.008 | $0.80 |
| 500 | $0.0065 | $3.25 |
| 1,000 | $0.005 | $5.00 |
06031C103K4T2A Overview
An MLCC is a passive component built from alternating layers of ceramic dielectric and metal electrodes, terminated on two opposing ends for surface-mount soldering. MLCCs are the most widely deployed capacitor family in modern electronics, spanning the hierarchy from decoupling capacitor to bypass capacitor to general-purpose voltage regulator support component, and they sit at the foundation of nearly every power-management and signal-integrity design.
Key features of the 06031C103K4T2A include the temperature-stable X7R dielectric, which holds capacitance within +/-15% over the -55C to +125C industrial temperature range, and the 100V rating that provides generous headroom for 12V, 24V, and 48V rail decoupling. The K tolerance code guarantees +/-10% capacitance accuracy, and the T2A suffix denotes 7-inch reel taping for automated pick-and-place assembly with matte-tin nickel-barrier terminations compatible with reflow soldering and lead-free (RoHS) processes.
Technically, X7R is an EIA Class II barium-titanate-based formulation offering intermediate dielectric constant with predictable, modest voltage-coefficient and aging behavior (approximately 1-2% per decade-hour aging). Compared with Class I C0G/NP0 parts, X7R delivers far higher volumetric efficiency, making it the default choice for decoupling, filtering, and coupling where exact capacitance precision is not critical.
Typical applications include decoupling of microcontroller and FPGA power rails, snubber and filtering networks in industrial power supplies, bypass capacitors in automotive and telecom control boards, and general coupling in instrumentation operating over wide temperature extremes.
When designing with this part, remember that X7R capacitance derates with applied DC bias; verify effective capacitance at your operating voltage rather than relying on the nominal 10 nF.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving procurement and engineering teams a single decision-ready reference.
Drop-in alternatives for 06031C103K4T2A β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
06031C103KAT2A
β Drop-Inπ Reference alternative (not in catalog)
06031C103K4Z2A
β Drop-Inπ Reference alternative (not in catalog)
VJ0603Y103KXBAC31
β Drop-Inπ Reference alternative (not in catalog)
06031C103K4T2A Maximum Ratings & Electrical Characteristics
| Capacitance | 10000 pF (10 nF) |
| Tolerance | +/-10% |
| Voltage Rating | 100 V DC |
| Dielectric | X7R (EIA Class II) |
| Temperature Coefficient | +/-15% over -55C to +125C |
| Operating Temperature Range | -55C to +125C |
| Package | 0603 (1608 Metric) |
| Package Size | 1.6 mm x 0.8 mm |
| Mounting Type | Surface Mount (SMD/SMT) |
| Termination Style | Nickel barrier, matte tin plated (S) |
| Product Category | Multilayer Ceramic Capacitor (MLCC) |
| Applications Group | General Purpose |
| Packaging | Tape & Reel (7-inch reel) |
| RoHS Status | Compliant |
06031C103K4T2A 1.6 mm x 0.8 mm Pin Configuration Guide
Pin configuration for 06031C103K4T2A (1.6 mm x 0.8 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for 06031C103K4T2A.
Refer to the datasheet for full pin configuration.
Typical Applications
06031C103K4T2A is suitable for 6 applications: Microcontroller Power Rail Decoupling, Industrial Power Supply Filtering, Automotive Control Module Bypass, Telecom and Networking Line Card Decoupling, LED Lighting Driver Input/Output Filtering, Test and Measurement Instrumentation.
Microcontroller Power Rail Decoupling
The 06031C103K4T2A provides local charge reservoirs and high-frequency bypassing for MCU and FPGA core/IO rails. Its 10nF value sits in the classic mid-frequency decoupling band, complementing bulk 10uF capacitors and 100nF caps to cover a wide impedance spectrum, while the 100V rating allows reuse of a single BOM line across 3.3V, 5V, 12V, and 24V rails without redesign. The X7R dielectric holds +/-15% capacitance across -55C to +125C, so decoupling remains effective in industrial enclosures. Place each capacitor within 2-3 mm of the IC power pin with short, wide traces; the 0603 case minimizes loop inductance compared with larger formats. Expect DC-bias derating to reduce effective capacitance, and parallel multiple units on high-current rails.
Recommended
Industrial Power Supply Filtering
In AC-DC and DC-DC industrial supplies, the 06031C103K4T2A serves as snubber, Y-cap-free EMI filter element, and control-side bypass. The 100V DC rating suits 48V telecom and 24V industrial buses with derating headroom, and the X7R formulation tolerates the -40C cold starts and +125C hot spots typical of industrial power enclosures. Compared with electrolytic solutions, the MLCC adds no wear-out mechanism and negligible ESR, improving filter Q when paired with ferrite beads. Designers should account for X7R voltage coefficient when sizing filter corner frequencies, since effective capacitance at operating bias is lower than nominal 10nF. The nickel-barrier termination resists solder leaching during wave-soldered power-board assembly.
Recommended
Automotive Control Module Bypass
Automotive ECUs and body-control modules require capacitors stable across -40C to +125C ambient extremes, which the X7R dielectric of the 06031C103K4T2A satisfies with its +/-15% temperature characteristic. The 100V rating covers load-dump-protected 12V rails and 48V mild-hybrid subsystems. For boards subject to vibration and thermal-cycling-induced flexure, KYOCERA AVX's FLEXITERM variant 06031C103K4Z2A offers the same electricals with flexible terminations that dramatically reduce flex-crack short-circuit failures - a documented MLCC failure mode in under-hood environments. Qualify the termination type against your board rigidity and AEC-Q-like stress profile; the standard T2A termination is appropriate for rigid, screwed-down boards.
Recommended
Telecom and Networking Line Card Decoupling
Telecom line cards mixing 48V phantom-power domains and low-voltage PHY rails exploit the 06031C103K4T2A's 100V rating to standardize one MLCC across voltage domains, simplifying procurement and placement libraries. Its 10nF X7R value provides mid-frequency bypass for serializers, PHY chips, and clock distribution ICs, while the 0603 footprint supports dense routing on 8-16 layer boards. The nickel-barrier matte-tin terminations withstand multiple reflow passes common in double-sided card assembly. Because telecom boards run continuously, X7R aging (1-2% per decade-hour) has largely settled by deployment and does not affect bypass function. Place one capacitor per power pin and distribute bulk 1uF+ capacitance per bank for best PDN impedance.
Recommended
LED Lighting Driver Input/Output Filtering
LED drivers, both constant-current switching regulators and linear drivers, generate ripple at the switching frequency that the 06031C103K4T2A can filter on sense and control nodes. The 100V rating supports direct placement on 48V LED-string rails used in commercial lighting, and the 0603 case keeps EMI-critical loops small. Its low ESR improves input-filter damping when combined with a bulk electrolytic, though designers should verify the X7R DC-bias derating so the filter corner does not shift under full bus voltage. The -55C to +125C operating range covers enclosed luminaire temperatures. For audible-noise-sensitive dimming applications, note that X7R ceramics exhibit piezoelectric effects; use the part on DC nodes rather than across audible-frequency ripple sources.
Recommended
Test and Measurement Instrumentation
Bench instruments, data-acquisition front ends, and probe electronics use the 06031C103K4T2A for supply bypass around analog front-end ICs where the -55C to +125C X7R stability keeps power-supply filtering predictable across calibration conditions. The +/-10% K tolerance provides tighter initial-value control than M-coded parts, useful where RC time constants set bandwidth or trigger thresholds. Designers should avoid X7R parts directly in the precision signal path - dielectric absorption and voltage coefficient make C0G preferable there - but for rail bypass the X7R's high volumetric density wins. The 0603 land pattern also matches standard ICT and AOI inspection libraries used in instrument manufacturing, and RoHS matte-tin terminations suit lead-free reflow profiles.
Recommended
Recommended Products Summary
Engineering reference data for 06031C103K4T2A β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 06031C103KAT2A | 06031C103K4Z2A | VJ0603Y103KXBAC31 |
|---|---|---|---|---|
| Package | 0603 (1608 Metric) | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same |
| Brand | KYOCERA AVX | KYOCERA AVX | KYOCERA AVX | Vishay Intertechnology |
| Capacitance | 10000 pF (10 nF) | 10000 pF (10 nF) | 10000 pF (10 nF) | 10000 pF (10 nF) |
| Voltage Rating | 100 V DC | 100 V DC | 100 V DC | 100 V DC |
| Tolerance | +/-10% | +/-10% | +/-10% | +/-10% |
| Dielectric | X7R | X7R | X7R | X7R |
| Temperature Range | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C |
| Termination | Matte-tin nickel-barrier (T2A) | Standard (AT2A) | FLEXITERM flexible polymer (Z2A) | Nickel-barrier, tin-plated (Vishay standard) |
Key Differentiators
- 100V rating in compact 0603 case (vs VJ0603Y103KXBAC31)
- Same-family FLEXITERM upgrade path (vs 06031C103K4Z2A)
- K tolerance for tighter initial accuracy (vs 06031C103KAT2A)
Design Notes
X7R capacitance derates under DC bias: the effective capacitance of this 10nF/100V capacitor can fall 20-50% below nominal at high bias fractions of the rated voltage. Estimated: if your decoupling budget assumes the full 10nF at 48V on a 100V part, verify the DC-bias curve from KYOCERA AVX before finalizing the PDN design, and parallel additional capacitors to recover the lost charge reservoir.
Place the 06031C103K4T2A within 2-3 mm of the IC power pin it decouples, with via-in-pad or short wide traces to the plane. The 0603 land pattern is standardized per IPC-SM-782-style footprints; use the vendor-recommended 1.0 mm x 1.3 mm pad geometry from the AVX datasheet for reliable self-alignment during reflow. Avoid daisy-chaining decoupling capacitors on shared traces - each capacitor deserves its own via pair to minimize loop inductance.
X7R capacitors age approximately 1-2% per decade-hour after last exposure above the Curie temperature, and exhibit piezoelectric (microphonic) behavior. Do not use this part in precision timing or sample-hold circuits, and avoid placing it near audible-ripple sources in audio or lighting-dimmer boards where acoustic noise can result. For rework, limit soldering iron contact and reflow exposure - repeated thermal shocks can crack the ceramic body.
Compliance Information
RoHS compliance and lead-free nickel-barrier terminations per DigChip spec record and distributor listings. REACH, halogen-free, and conflict-minerals declarations not found in verified data - request compliance certificates from KYOCERA AVX.
