The KEMET C1206X331G1HACAUTO is a 330 pF multilayer ceramic capacitor engineered for automotive and high-reliability applications where stable capacitance performance across extended temperature ranges is required. Built on X8R dielectric technology, this surface mount component maintains ±2% capacitance tolerance and operates from -55°C to 150°C with a voltage rating of 100V, positioning it for power management, signal coupling, and EMI filtering in harsh environmental conditions.
This capacitor belongs to KEMET's SMD Auto X8R HT150C Flex series, specifically designed to meet AEC-Q200 automotive qualification standards. The X8R temperature characteristic ensures capacitance variation remains within ±15% over the full operating temperature range, offering more predictable behavior than Y5V or Z5U dielectrics in circuits sensitive to temperature-induced drift. The 100V rating provides headroom in automotive 48V architectures and industrial power distribution networks where transient voltage spikes are present.
The 1206 (3216 metric) form factor measures 0.130" × 0.063" (3.30mm × 1.60mm) with a maximum thickness of 0.039" (0.98mm), balancing board space efficiency with power handling. Soft termination construction reduces mechanical stress transfer from PCB flexure, addressing reliability concerns in boardflex-sensitive assemblies such as those found in vehicle body electronics, ADAS modules, and industrial control boards mounted to vibrating machinery. Low equivalent series inductance (ESL) improves high-frequency performance in decoupling and bypass applications where parasitic inductance can compromise filtering effectiveness at switching frequencies above 1 MHz.
Surface mount installation via reflow soldering is compatible with standard SMT assembly processes. The component carries Moisture Sensitivity Level 1 classification, eliminating bake-out requirements prior to reflow and simplifying manufacturing logistics. RoHS3 and REACH compliance align with global electronics manufacturing regulations, while the EAR99 ECCN classification confirms standard export control status.
The 330 pF value sits within a range commonly deployed for RF coupling, high-speed signal termination, and snubber networks in switch-mode power supplies. In automotive inverter designs and DC-DC converters operating at elevated ambient temperatures, the 150°C upper limit extends operational margin beyond the 125°C ceiling of standard X7R devices. The ±2% tolerance supports precision timing circuits and resonant tank designs where capacitance accuracy directly affects frequency stability.
KEMET's C1206X platform addresses multiple constraints simultaneously: automotive qualification, flex tolerance, high-temperature survival, and compact geometry. Engineers evaluating ceramic capacitors for Class 2 dielectric stability in 12V, 24V, or 48V automotive power rails, or industrial applications exposed to continuous thermal cycling, will find the performance envelope and qualification pedigree aligned with long-term reliability targets in mission-critical electronics.
C1206X331G1HACAUTO (1)
Replacement Planning for KEMET C1206X331G1HACAUTO 330 pF 100 V Automotive MLCC
Replacing KEMET C1206X331G1HACAUTO is not just a matter of matching “330 pF, 100 V, 1206.” This capacitor combines tight ±2% capacitance tolerance, X8R dielectric behavior, 150°C operation, soft termination, low ESL construction, and AEC-Q200 automotive qualification. A substitute that matches capacitance and footprint may still differ in temperature capability, board-flex resistance, dielectric stability, aging behavior, or qualification level.
Common replacement or alternative part numbers to evaluate include:
- KEMET C1206X331G1HACAUTO
- KEMET
C1206X331J1HACAUTO
C1206X331J1HACAUTO
KEMET
CAP CER 1206 330PF 100V ULTRA ST
2000000
- TDK CGA5L3X8R2A331G160AA
- TDK CGA5L3X8R2A331J160AA
- Vishay
VJ1206A331GXBAT
VJ1206A331GXBAT
Vishay Vitramon
CAP CER 330PF 100V C0G/NP0 1206
2000000
- Yageo AC1206GRX8R0BB331
- Murata GCJ31C5C2A331JXJ
The closest replacements are typically automotive-grade 1206 MLCCs with 330 pF capacitance, 100 V rated voltage, X8R or more stable dielectric, and AEC-Q200 qualification. If the original capacitor is used in timing, sensing, filtering, impedance-shaping, or high-temperature automotive circuits, tolerance and temperature behavior should be checked before approving a substitute.
What Defines the Original KEMET C1206X331G1HACAUTO Capacitor
KEMET C1206X331G1HACAUTO is a surface-mount multilayer ceramic capacitor from the SMD Auto X8R HT150C Flex series. Its main electrical value is 330 pF with ±2% tolerance and a 100 V rating in a 1206 package. The X8R dielectric supports operation from -55°C to +150°C, making it more suitable than standard X7R capacitors where elevated temperature exposure is expected.
Key characteristics and replacement impact:
| Parameter | KEMET C1206X331G1HACAUTO specification | Replacement evaluation impact |
|---|---|---|
| Capacitance | 330 pF | Must match closely in RF filtering, signal conditioning, snubber, timing, and EMI control circuits |
| Tolerance | ±2% | Alternatives with ±5% or ±10% may be unsuitable where capacitance accuracy affects circuit behavior |
| Rated voltage | 100 V | Replacement should meet or exceed 100 V, including derating requirements |
| Dielectric | X8R | Supports wider high-temperature range than X7R; C0G/NP0 may improve stability but may differ in availability and qualification |
| Operating temperature | -55°C to +150°C | Important for under-hood automotive, powertrain, LED, industrial, and high-temperature modules |
| Package | 1206 / 3216 metric | Mechanical footprint should match PCB pads and assembly rules |
| Features | Low ESL, soft termination, high temperature | Soft termination reduces cracking risk under board flex; low ESL helps high-frequency performance |
| Qualification | AEC-Q200 | Replacement should be automotive-qualified if used in automotive or high-reliability assemblies |
| Packaging | Tape & Reel | Suitable for automated SMT assembly |
The soft termination feature is a major part of the replacement decision. In boardflex-sensitive applications, a standard termination MLCC may pass electrical checks but carry higher risk of flex cracking during depaneling, thermal cycling, or mechanical stress. Similarly, replacing X8R with X7R may be acceptable only if the local temperature stays within the X7R operating range and capacitance drift remains acceptable.
Typical use cases include automotive control modules, high-temperature sensor interfaces, EMI filtering, small-signal coupling or bypassing, and board areas exposed to vibration or bending stress.
Candidate Alternatives for KEMET C1206X331G1HACAUTO Equivalent Replacement
The following table compares practical replacement candidates. Final approval should be based on the latest manufacturer datasheet, electrical test conditions, soldering profile, and qualification requirements.
| Manufacturer | Part Number | Key Specifications | Product Features | Typical Applications | Why It Can Replace KEMET C1206X331G1HACAUTO | Main Differences or Limitations | Recommended Usage |
|---|---|---|---|---|---|---|---|
| KEMET | C1206X331G1HACAUTO | 330 pF, ±2%, 100 V, X8R, 1206, -55°C to +150°C | Soft termination, low ESL, high-temperature MLCC, AEC-Q200 | Automotive modules, boardflex-sensitive circuits, high-temperature filtering | Original reference part with matching electrical, mechanical, and qualification profile | None when the same ordering code and packaging are used | First choice when exact replacement or form-fit-function continuity is required |
| KEMET |
C1206X331J1HACAUTO
KEMET
CAP CER 1206 330PF 100V ULTRA ST
2000000
| 330 pF, ±5%, 100 V, X8R, 1206, automotive-grade family | Same general KEMET X8R automotive platform with relaxed tolerance | Bypass, EMI filtering, non-precision coupling, general automotive decoupling | Same manufacturer, same capacitance, voltage, package, dielectric family, and automotive positioning | ±5% tolerance instead of ±2%; may not be suitable for precision networks | Suitable when capacitance tolerance margin is acceptable |
| TDK | CGA5L3X8R2A331G160AA | 330 pF, ±2%, 100 V, X8R, 1206 automotive MLCC | Automotive-grade CGA series, high-temperature dielectric option | Automotive ECU filtering, signal conditioning, high-temperature ceramic capacitor replacement | Closely aligns with capacitance, voltage, tolerance, package, dielectric, and automotive qualification needs | Termination structure, thickness, and DC bias behavior should be verified against KEMET data | Strong second-source option where ±2% and X8R behavior are required |
| TDK | CGA5L3X8R2A331J160AA | 330 pF, ±5%, 100 V, X8R, 1206 automotive MLCC | Automotive-grade construction with relaxed tolerance | General automotive filtering, bypassing, non-precision capacitance locations | Matches voltage, capacitance, package, and X8R dielectric class while offering sourcing flexibility | ±5% tolerance; may not match exact capacitance window of the original | Useful when availability matters and circuit tolerance analysis supports ±5% |
| Vishay |
VJ1206A331GXBAT
Vishay Vitramon
CAP CER 330PF 100V C0G/NP0 1206
2000000
| 330 pF, ±2%, 100 V class, 1206 automotive MLCC family | Automotive MLCC option, compact SMD ceramic capacitor | Filtering, coupling, EMI suppression, automotive electronics | Similar capacitance, tolerance, voltage class, and footprint can make it a candidate substitute | Confirm dielectric code, temperature rating, termination type, and AEC-Q200 status for the exact suffix | Consider when a Vishay-qualified AVL source is preferred |
| Yageo | AC1206GRX8R0BB331 | 330 pF, ±2%, 100 V, X8R, 1206 automotive MLCC family | Automotive-grade AC series, X8R dielectric option | Automotive filtering, bias networks, sensor circuits, control electronics | Matches the main electrical target: 330 pF, 100 V, X8R, 1206, automotive orientation | Soft termination and high-temperature qualification details should be verified for the exact orderable part | Suitable for cost-sensitive second-source review if qualification data meets project rules |
| Murata | GCJ31C5C2A331JXJ | 330 pF, ±5%, 100 V, C0G/NP0-type automotive soft-termination family candidate | High stability dielectric behavior, automotive soft termination family | Precision filtering, RF/signal paths, low-loss networks, bias-stable circuits | C0G/NP0 can provide superior capacitance stability versus Class II dielectrics at 330 pF | ±5% tolerance; temperature range may differ from X8R 150°C capability; capacitance class differs | Good alternative when stability is preferred over X8R capacitance density and temperature rating is acceptable |
The most direct engineering substitutes are TDK CGA5L3X8R2A331G160AA and Yageo AC1206GRX8R0BB331 because they target the same capacitance, 100 V rating, X8R dielectric behavior, 1206 package, and automotive use. KEMET
C1206X331J1HACAUTO
and TDK CGA5L3X8R2A331J160AA become practical only if the circuit can tolerate ±5% capacitance variation.
C1206X331J1HACAUTO
KEMET
CAP CER 1206 330PF 100V ULTRA ST
2000000
Murata GCJ31C5C2A331JXJ is not a like-for-like dielectric replacement if the original design specifically requires X8R and 150°C operation, but it may be attractive for circuits where capacitance stability, low loss, and low voltage coefficient are more valuable than matching the original dielectric family.
Engineering Comparison of KEMET C1206X331G1HACAUTO Replacement Options
Replacement approval should consider the operating role of the capacitor. A 330 pF MLCC used for EMI filtering may tolerate wider capacitance spread, while the same value in a tuned filter, timing path, impedance compensation network, or sensor front end may require a closer match to the original ±2% specification.
| Part Number | Electrical Compatibility | Mechanical Compatibility | Performance Differences | Reliability Considerations | Package / Supply Considerations | Cost Considerations | Best-Fit Scenario | Advantages | Limitations |
|---|---|---|---|---|---|---|---|---|---|
| KEMET C1206X331G1HACAUTO | Exact match: 330 pF, ±2%, 100 V, X8R | Exact 1206 footprint and intended construction | Baseline performance | AEC-Q200, soft termination, high-temperature capability | Tape & Reel, original manufacturer supply path | May carry premium pricing depending on availability | Exact replacement, no redesign preferred | Lowest qualification risk | Availability may drive need for second source |
| KEMET C1206X331J1HACAUTO | Close match but ±5% tolerance | Same general 1206 KEMET platform | Wider capacitance spread may shift circuit response | Automotive family and high-temperature X8R positioning | Similar sourcing and assembly handling | Often easier to source than tight-tolerance versions | Non-precision filtering and bypass locations | Same manufacturer family simplifies documentation | Not suitable if ±2% capacitance is required |
| TDK CGA5L3X8R2A331G160AA | Strong match: 330 pF, ±2%, 100 V, X8R | 1206 footprint; confirm thickness and land pattern | Similar Class II dielectric behavior; DC bias curve should be reviewed | Automotive-grade CGA series; confirm termination requirements | Broad global MLCC availability | Competitive depending on market | Preferred second source for like-for-like electrical replacement | Maintains tight tolerance and X8R profile | Termination and flex behavior may not be identical to KEMET |
| TDK CGA5L3X8R2A331J160AA | Good match except ±5% tolerance | 1206 compatible | Similar dielectric class with wider tolerance | Automotive MLCC family | Useful AVL alternative | May reduce procurement pressure | General automotive filtering where tolerance is relaxed | Good balance of availability and technical alignment | Less suitable for precision capacitance positions |
| Vishay VJ1206A331GXBAT | Potentially close; verify exact dielectric and voltage code | 1206 package compatibility | May differ in dielectric, termination, and high-temperature rating depending on exact suffix | Automotive qualification should be checked on the exact ordering code | Useful for multi-vendor sourcing | Cost and availability may be favorable | AVL diversification after datasheet confirmation | Recognized MLCC supplier with automotive options | Requires careful suffix validation before approval |
| Yageo AC1206GRX8R0BB331 | Strong nominal match: 330 pF, ±2%, 100 V, X8R | 1206 footprint | Similar capacitance and voltage target; validate voltage coefficient and temperature data | Automotive AC series; verify flex termination and qualification details | Often attractive for supply-chain flexibility | May offer cost advantage | Cost-aware automotive second source | Good electrical alignment on core parameters | Mechanical stress performance must be confirmed if board flex is a concern |
| Murata GCJ31C5C2A331JXJ | Same capacitance and voltage class, but C0G/NP0-type behavior rather than X8R | 1206-compatible Murata automotive soft-termination family candidate | Lower capacitance drift and lower loss; may not match 150°C X8R requirement | Automotive soft-termination family candidate; confirm temperature range | Good option where Murata is preferred | May cost more than Class II MLCCs | Precision signal, RF, and stable filter applications | Better capacitance stability and low voltage coefficient | Not a direct X8R high-temperature equivalent |
For a direct KEMET C1206X331G1HACAUTO equivalent, prioritize candidates with 330 pF capacitance, ±2% tolerance, 100 V rating, X8R dielectric, 1206 package, AEC-Q200 qualification, and soft termination or equivalent board-flex protection. If the capacitor is located in a mechanically stressed PCB region, termination construction should be reviewed as closely as the electrical parameters.
For procurement flexibility, TDK CGA5L3X8R2A331G160AA and Yageo AC1206GRX8R0BB331 are strong candidates to evaluate first. If tolerance can be relaxed, KEMET
C1206X331J1HACAUTO
and TDK CGA5L3X8R2A331J160AA may broaden availability. If the design benefits from a more stable dielectric and does not require exact X8R 150°C behavior, Murata GCJ31C5C2A331JXJ can be reviewed as a performance-oriented alternative.
C1206X331J1HACAUTO
KEMET
CAP CER 1206 330PF 100V ULTRA ST
2000000
For quotations and availability of KEMET C1206X331G1HACAUTO replacement parts, equivalent MLCCs, and automotive-grade capacitor alternatives, request pricing through IC-Components.com or email Info@IC-Components.com.
