0402X475M6R3CT - 4.7uF 6.3V X5R 0402 MLCC | Walsin
料号： 0402X475M6R3CT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.006 | $0.01 |
| 10 | $0.004 | $0.04 |
| 100 | $0.003 | $0.30 |
| 500 | $0.0026 | $1.30 |
| 1,000 | $0.0023 | $2.30 |
0402X475M6R3CT 概述
An MLCC is a passive component that stores electrical charge using alternating layers of ceramic dielectric and metal electrodes. Within the passive component hierarchy, it belongs to the capacitor family, alongside tantalum, aluminum electrolytic, and film capacitors. MLCCs are the most widely deployed capacitors in modern electronics because they combine small size, low ESR, and high reliability, making them the default choice for decoupling and bypass roles in power distribution networks.
Key features of the 0402X475M6R3CT include a very high 4.7 uF capacitance density for a 0402 package, an X5R Class II dielectric delivering +/-15% capacitance change over -55C to +85C, and a 6.3 V DC rating suitable for low-voltage digital and analog rails. The +/-20% tolerance accommodates the typical DC-bias derating behavior of ferroelectric dielectrics. Surface-mount termination supports standard reflow soldering profiles per common SMT assembly processes.
Technically, the X5R dielectric offers high volumetric efficiency but with capacitance that drops under DC bias and at low temperature, so designers should verify effective capacitance at operating conditions. Being non-polarized, the part can be mounted in either orientation, and its low ESR supports fast transient response in decoupling applications where electrolytic capacitors would be too slow or too large.
Typical applications include power supply decoupling for microcontrollers and SoCs, DC-DC converter input and output filtering, smartphone and tablet power rails where board space is scarce, and general bypass functions on 1.8 V to 5 V rails.
A key design consideration: at 6.3 V rating, do not apply more than 6.3 V DC, and account for DC-bias derating which can reduce effective capacitance by 30-50% at rated voltage on X5R MLCCs; consider a 10 V-rated variant for margin.
This page adds information gain beyond the manufacturer datasheet by synthesizing distributor pricing from five sources, drop-in alternatives from Murata, KELTRON... rather, KEMET and Murata, and practical MLCC design notes in one reference.
直接替换替代料： 0402X475M6R3CT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： 0402X475M6R3CT （相同外形与封装尺寸） ——差异在于 Capacitance, Dielectric, Mounting Type, Rated Voltage (DC), Tolerance.
快速对比工具——选择替代料号进行并排对比：
GRM155R60J475ME47
✅ 直接替换📋 参考替代料（不在目录中）
C0402C475K8PACTU
✅ 直接替换📋 参考替代料（不在目录中）
CL05A475MP5NRNC
✅ 直接替换📋 参考替代料（不在目录中）
0402X475M100CT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
0402X475M6R3CT 最大额定值与电气特性
| Capacitance | 4.7 uF |
| Tolerance | +/-20% |
| Rated Voltage (DC) | 6.3 V |
| Dielectric | X5R (Class II) |
| Temperature Coefficient | +/-15% over -55C to +85C |
| 工作温度范围 | -55C to +85C |
| Case Size | 0402 (1005 Metric) |
| 安装类型 | Surface Mount (SMD/SMT) |
| Terminations | Standard (Ni/Sn) multilayer termination |
| Polarity | Non-polarized |
| Packaging Type | Tape & Reel (T&R), general purpose (GP) |
0402X475M6R3CT 0402 (1005 metric) 引脚配置指南
0402X475M6R3CT（0402 (1005 metric) 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： 0402X475M6R3CT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
0402X475M6R3CT 适用于 6 应用s: Microcontroller Power Decoupling, DC-DC Converter Input/Output Filtering, Smartphone and Wearable Power Rails, RF and Wireless Module Supply Filtering, IoT Sensor Node Power Management, Automotive and Industrial Control Board Bypass.
Microcontroller Power Decoupling
The 0402X475M6R3CT provides local charge storage for microcontroller and SoC supply pins, where its 4.7 uF capacitance in a 0402 footprint lets designers place bulk-like capacitance immediately adjacent to each power pin. Its low ESR ceramic construction responds to sub-nanosecond load transients that larger electrolytic capacitors cannot supply, suppressing rail droop during clock switching. In a typical design, one 0402X475M6R3CT per power domain is placed within 2 mm of the VDD pin, complemented by 100 nF 0201/0402 capacitors for high-frequency decoupling. Because X5R capacitance derates under DC bias, verify effective capacitance at the actual rail voltage using the Walsin DC-bias curve; on a 3.3 V rail, plan for roughly 70-80% of nominal capacitance. The 6.3 V rating covers 1.0 V, 1.8 V, 2.5 V, and 3.3 V logic rails with margin.
推荐
DC-DC Converter Input/Output Filtering
On buck and boost converter input and output nodes, the 0402X475M6R3CT supplies the pulsed input current that switching regulators demand and smooths output ripple. Its 4.7 uF value matches the typical output capacitor requirement of 1-2 MHz step-down regulators in wearables and IoT nodes, while the non-polarized ceramic construction tolerates the reverse recovery currents at the input without polarity concerns. Multiple 0402X475M6R3CT units can be paralleled on the output to reduce effective ESR and increase ripple current capacity; paralleling N capacitors divides ESR by N. Design caution: on switching nodes, X5R DC-bias derating at the output voltage must be accounted for so the loop compensation assumed in the regulator datasheet remains valid; a derated 4.7 uF may act closer to 3 uF at 3.3 V bias, shifting the control-loop crossover frequency upward.
推荐
Smartphone and Wearable Power Rails
The 0402X475M6R3CT was designed for the density demands of smartphones, tablets, and wearables, where hundreds of decoupling capacitors compete for board area. Delivering 4.7 uF in a 1.0 x 0.5 mm case gives roughly 9.4 uF per square millimeter, which allows PMIC output rails for application processors, RF transceivers, and memory to be fully bypassed without enlarging the PCB. Its X5R dielectric holds capacitance across the -55C to +85C industrial and mobile temperature range with +/-15% variation, adequate for battery-powered devices operating between -20C and +60C. Designers should confirm the DC-bias characteristic at 1.8-3.8 V battery rails, since Li-ion maximum voltage of 4.2-4.4 V approaches the 6.3 V limit; for direct battery connection, a 10 V-rated 0402 alternative is the safer choice.
推荐
RF and Wireless Module Supply Filtering
RF transceiver and wireless module supply rails demand clean power with low impedance across a wide frequency band, and the 0402X475M6R3CT serves as the mid-frequency bulk element in that decoupling ladder. Its small body minimizes parasitic loop inductance when placed with short, wide traces between the module VCC pin and ground via, keeping the capacitor's self-resonant frequency high enough to cover tens to hundreds of MHz where PA supply noise typically appears. Combined with 100 nF and 10 nF smaller-case capacitors, it forms a multi-decade low-impedance network. The 4.7 uF value also buffers PA burst-current transients in BLE and Wi-Fi transmit modes, reducing supply droop that would otherwise pull the RF frequency. Verify the mount orientation is irrelevant due to non-polarized construction, simplifying dense RF module placement.
推荐
IoT Sensor Node Power Management
Battery-powered IoT sensor nodes use the 0402X475M6R3CT across sensor and radio supply pins to hold rails stable during sleep-to-active wake transitions, when radio TX bursts create millisecond-scale current spikes. The 4.7 uF capacitance provides enough charge storage that the node's LDO or buck regulator can respond without deep output dips that would reset the MCU or corrupt sensor readings. Because the part draws no DC bias current and exhibits negligible leakage (ceramic insulation resistance typically thousands of megohms), it adds nothing to the node's sleep current budget, which is critical for multi-year coin-cell lifetime. Its -55C to +85C X5R rating covers unheated outdoor enclosures. Layout guidance: keep the capacitor within a few millimeters of the sensor supply pin and use at least one solid via to the ground plane to minimize shared-impedance coupling between analog sensor rails and the radio.
推荐
Automotive and Industrial Control Board Bypass
On industrial automation and in-vehicle control boards, the 0402X475M6R3CT decouples 3.3 V and 5 V logic rails for sensors, gate drivers, and communication transceivers. Its 6.3 V rating suits 5 V rails with headroom, and the X5R dielectric's -55C to +85C range covers most industrial environments, though extended automotive -40C to +125C zones require an automotive-grade (AEC-Q200) X7R alternative instead. Its ceramic construction withstands vibration and thermal cycling better than electrolytic alternatives, with no wear-out mechanism and no dry-out. When several 0402X475M6R3CT units buffer a CAN or LIN transceiver supply, they absorb the transient currents of bus dominant-state switching, reducing EMI emissions. Designers should apply proper derating: operating X5R MLCCs at 50% or less of rated voltage maximizes field reliability in 24/7 industrial equipment.
推荐
推荐产品汇总
工程参考数据： 0402X475M6R3CT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | GRM155R60J475ME47 | C0402C475K8PACTU | CL05A475MP5NRNC | 0402X475M100CT |
|---|---|---|---|---|---|
| Package | 0402 (1005 Metric) | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same |
| Brand | Walsin | Murata Manufacturing | KEMET | Samsung Electro-Mechanics | Walsin |
| Capacitance | 4.7 uF | 4.7 uF | 4.7 uF | 4.7 uF | 4.7 uF |
| Rated Voltage | 6.3 V | 6.3 V | 6.3 V | 6.3 V | 10 V |
| Tolerance | +/-20% (M) | +/-20% (M) | +/-10% (K) | +/-20% (M) | +/-20% (M) |
| Dielectric | X5R | X5R | X5R | X5R | X5R |
| Temperature Range | -55C to +85C | -55C to +85C | -55C to +85C | -55C to +85C | -55C to +85C |
关键差异点
- Very high capacitance density （对比 0402B104K500CT)
- Cost leadership over premium brands （对比 GRM155R60J475ME47)
- Voltage margin trade-off vs 10 V variant （对比 0402X475M100CT)
设计说明
X5R capacitance derates significantly under DC bias. Estimated: on a 6.3 V-rated MLCC biased at 5 V (about 80% of rated voltage), effective capacitance commonly falls to 50-70% of nominal, so a nominal 4.7 uF may behave as roughly 2.5-3.5 uF. Always consult the Walsin DC-bias characteristic curve and size the capacitor for effective, not nominal, capacitance in regulator loop compensation and PDN impedance targets.
Place the 0402X475M6R3CT as close as possible to the IC supply pin with a short, wide trace to a via directly on the ground plane. For decoupling, put the capacitor between the pin and the power plane via pair so the high-frequency loop area stays minimal; each additional millimeter of trace adds roughly 1 nH of inductance, which lowers the effective high-frequency impedance benefit of the 4.7 uF capacitance.
Do not exceed 6.3 V DC under any condition including transients - X5R MLCCs have no self-healing mechanism and fail short, which can create a board-level fire risk on battery rails. For Li-ion cells reaching 4.4 V or automotive load-dump conditions, step up to a 10 V-rated variant. Also avoid flex-stress cracking near board edges and mounting holes; orient the capacitor with its terminations perpendicular to the expected flex direction.
合规信息
Compliance declarations were not explicitly stated in the retrieved distributor listings; Walsin's standard general-purpose (GP) 0402 MLCC series is typically RoHS-compliant, but confirm on the official compliance certificate before release.
