GRM155R61A475MEAA - 4.7uF 10V X5R MLCC 0402 | Murata
料号： GRM155R61A475MEAA ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.1 | $0.10 |
| 10 | $0.08 | $0.80 |
| 100 | $0.05 | $5.00 |
| 500 | $0.04 | $20.00 |
| 1,000 | $0.03 | $30.00 |
GRM155R61A475MEAA 概述
A multilayer ceramic capacitor (MLCC) is a surface-mount passive component constructed from alternating layers of ceramic dielectric and metal electrodes, sintered into a monolithic block and terminated with nickel-barrier solder coatings. The X5R dielectric (EIA RS-198) provides stable capacitance across -55C to +85C with a +/-15% tolerance band, and offers moderate volumetric efficiency, making X5R the dominant choice for bulk decoupling in 3.3 V to 10 V digital and analog rails. MLCCs sit hierarchically under ceramic capacitor -> capacitor -> passive component -> electronic component.
Key features of the GRM155R61A475MEAA include a 4.7 uF nominal capacitance in a compact 0402 footprint, a 10 V DC rated voltage, an X5R temperature characteristic, and +/-20% capacitance tolerance at reference conditions. The device uses Murata's standard nickel-barrier / tin (Ni/Sn) RoHS-compliant terminations suitable for reflow soldering up to 260C peak per JEDEC J-STD-020. With its compact 0402 case size and 4.7 uF rating, the part bridges the gap between smaller 1 uF / 2.2 uF decoupling caps and the physically larger 10 uF / 22 uF options that traditionally required 0603 or larger footprints.
Technically, the X5R dielectric in this 0402 package delivers high volumetric efficiency at the cost of significant DC-bias derating - actual capacitance can drop 60-80% under rated DC voltage. Designers must consult the published DC-bias curves from the Murata datasheet before using this part in bulk decoupling roles on rails above 5 V. AC voltage characteristics, temperature coefficient, and aging behavior are all documented in the manufacturer datasheet.
Typical applications include bulk decoupling of microcontroller power pins, smoothing on LDO regulator outputs, coupling capacitors in audio signal paths, charge-pump reservoir capacitors, and general-purpose filtering in portable consumer electronics, IoT devices, wearables, and embedded modules. In 0402 format the part is especially useful where board real estate is constrained.
When designing with the GRM155R61A475MEAA, verify capacitance under actual DC bias using the Murata DC-bias curves rather than relying on the nominal 4.7 uF value. For 5 V rails with strict ripple budgets, derate by 50% or stack two capacitors in parallel; for 3.3 V rails the nominal capacitance is largely preserved.
This page synthesizes distributor pricing, drop-in Murata and cross-brand alternatives, and practical DC-bias and PCB design notes not consolidated in the manufacturer datasheet.
直接替换替代料： GRM155R61A475MEAA ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
GRM155R61A475KEAAD
✅ 直接替换📋 参考替代料（不在目录中）
GRM155R61A475MEAAD
✅ 直接替换📋 参考替代料（不在目录中）
GRM155R61A475MEAAJ
✅ 直接替换📋 参考替代料（不在目录中）
CL05A475KP5NRNC
✅ 直接替换📋 参考替代料（不在目录中）
C1005X5R1A475K050BC
✅ 直接替换📋 参考替代料（不在目录中）
EMK105BBJ475MVHF
✅ 直接替换📋 参考替代料（不在目录中）
GRM155R61A475MEAA 最大额定值与电气特性
| Capacitance | 4.7 uF |
| Capacitance Tolerance | +/-20% |
| Rated Voltage (DC) | 10 V |
| Dielectric / Temperature Characteristic | X5R (EIA standard) |
| 工作温度范围 | -55C to +85C |
| 封装 / 外壳 | 0402 (1005 Metric) |
| Length | 1.0 mm +/-0.05 mm |
| Width | 0.5 mm +/-0.05 mm |
| Thickness | 0.5 mm +/-0.05 mm |
| 安装类型 | Surface Mount (SMD/SMT) |
| Termination Style | Nickel-barrier / Tin (Ni/Sn) plating |
| Series | GRM (Murata general-purpose MLCC) |
| MSL 等级 | MSL 1 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
| Capacitor Type | Multilayer Ceramic Capacitor (MLCC) |
GRM155R61A475MEAA 0402 (1005 metric) 引脚配置指南
GRM155R61A475MEAA（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： GRM155R61A475MEAA.
请参阅 数据手册 以查看完整引脚配置。
典型应用
GRM155R61A475MEAA 适用于 6 应用s: Microcontroller Core Supply Bulk Decoupling, LDO Regulator Output Smoothing, Audio Signal Path Coupling, Charge-Pump and DC-DC Converter Reservoir, USB and Connectivity Module Power Filtering, Wearable and IoT Sensor Power Decoupling.
Microcontroller Core Supply Bulk Decoupling
The GRM155R61A475MEAA is well suited for bulk decoupling on 3.3 V or 5 V microcontroller core rails where its 4.7 uF nominal capacitance provides effective suppression of load-transient spikes in the 1-100 MHz band. Placed within 3 mm of the MCU VDD pin with a 0.1 uF X7R in parallel, the X5R dielectric supplies the bulk charge reservoir while the X7R handles high-frequency decoupling. On a 5 V rail the capacitance retains roughly 50% of nominal under DC bias (per Murata DC-bias curves), so designers should verify effective in-circuit capacitance before committing to a single cap rather than paralleling two parts.
推荐
LDO Regulator Output Smoothing
Placed on the output of low-dropout regulators such as the AMS1117 or TPS7A45xx, the GRM155R61A475MEAA provides 4.7 uF of output capacitance that stabilizes the regulator's control loop and reduces output impedance in the audio and baseband frequency range. The X5R dielectric offers ESR low enough to maintain loop phase on LDOs requiring only ceramic output capacitors. At 3.3 V output, the part retains nearly full nominal capacitance, while at 5 V output it can lose 50-70% of nominal, so a parallel second cap or upgrade to a 10 uF part may be required for tight ripple specifications.
推荐
Audio Signal Path Coupling
The GRM155R61A475MEAA functions as a coupling capacitor in audio line-level signal paths where its small 0402 footprint allows dense layout on portable audio PCBs and its X5R dielectric provides acceptable THD performance for non-critical consumer audio paths. The 10 V rating is well above the typical 1-3 V audio signal levels, providing ample derating margin for reliability. For high-fidelity audio where C0G/NP0 dielectric is preferred for lowest distortion, designers may substitute a C0G part at lower capacitance density.
推荐
Charge-Pump and DC-DC Converter Reservoir
In charge-pump inverter and step-up DC-DC converter circuits, the GRM155R61A475MEAA serves as a flying or reservoir capacitor where the 0402 form factor and 10 V rating suit 3.3 V to 5 V converter designs. The X5R dielectric's relatively stable capacitance versus temperature helps maintain converter efficiency across the -55C to +85C operating range. Designers should select capacitor voltage rating at least 2x the maximum DC voltage seen in the topology for reliability margin per Murata derating guidelines.
推荐
USB and Connectivity Module Power Filtering
USB 2.0/3.0 transceiver and Wi-Fi/Bluetooth module supply rails benefit from the GRM155R61A475MEAA's 4.7 uF bulk capacitance to attenuate switching noise from the host SoC and absorb transient current steps during RF transmission bursts. Placed adjacent to the module's VDD pins, the part works with a 0.1 uF X7R for broadband filtering. The 0402 footprint suits space-constrained dongle and wearable designs where every square millimeter of PCB real estate matters.
推荐
Wearable and IoT Sensor Power Decoupling
Battery-powered wearables, fitness trackers, and IoT sensor nodes use the GRM155R61A475MEAA to decouple power for low-power MCUs, sensors, and radios from coin-cell or Li-Po battery sources. The 0402 footprint enables compact layouts and the 4.7 uF capacitance sustains the radio module through peak TX current pulses without excessive voltage droop. The X5R dielectric and Ni/Sn terminations ensure long-term reliability in consumer-grade temperature environments.
推荐
推荐产品汇总
工程参考数据： GRM155R61A475MEAA ——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 | GRM155R61A475KEAAD | GRM155R61A475MEAAD | CL05A475KP5NRNC | C1005X5R1A475K050BC | EMK105BBJ475MVHF |
|---|---|---|---|---|---|---|
| Brand | Murata Manufacturing | Murata Manufacturing | Murata Manufacturing | Samsung Electro-Mechanics | TDK | Taiyo Yuden |
| Package | 0402 (1005 Metric) | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same |
| Capacitance | 4.7 uF | 4.7 uF | 4.7 uF | 4.7 uF | 4.7 uF | 4.7 uF |
| Rated Voltage | 10 V | 10 V | 10 V | 10 V | 10 V | 10 V |
| Dielectric | X5R | X5R | X5R | X5R | X5R | X5R |
| Capacitance Tolerance | +/-20% | +/-10% | +/-20% | +/-10% | +/-10% | +/-20% |
| Operating Temperature | -55C to +85C | -55C to +85C | -55C to +85C | -55C to +85C | -55C to +85C | -55C to +85C |
| RoHS Compliance | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx. Unit Price (1k qty) | $0.03-0.05 | $0.04-0.06 | $0.03-0.05 | $0.02-0.04 | $0.03-0.05 | $0.03-0.05 |
关键差异点
- Industry-standard GRM series with broadest distributor availability （对比 CL05A475KP5NRNC (Samsung CL05 series))
- +/-20% tolerance variant offers lowest cost in 4.7uF 0402 X5R （对比 GRM155R61A475KEAAD (Murata +/-10% variant))
- RoHS-compliant Ni/Sn termination with full Pb-free reflow support （对比 C1005X5R1A475K050BC (TDK C series))
设计说明
The X5R dielectric in the GRM155R61A475MEAA exhibits significant DC-bias derating - at the rated 10 V DC, capacitance can drop 60-80% from nominal, leaving effective capacitance as low as 1 uF. Per the Murata datasheet DC-bias curves, designers should evaluate effective in-circuit capacitance at the actual operating voltage, not the nominal 4.7 uF. Estimated: at 5 V DC bias, effective capacitance is approximately 1.5-2.5 uF. For 5 V rails requiring tight bulk decoupling, consider a higher-voltage-rated part or parallel capacitors.
Place the GRM155R61A475MEAA as close as possible to the IC power terminal it decouples, ideally within 1-2 mm of the VDD pin to minimize parasitic inductance. Use wide, short traces (>=0.3 mm wide) connecting both terminals to the power and ground planes respectively. Avoid routing signal traces between the capacitor pads and the IC power pin, and ensure a solid ground return path directly under the capacitor on an inner ground plane layer.
Do not exceed the rated 10 V DC voltage even briefly - exceeding the voltage rating can cause dielectric breakdown, capacitor failure, and possible board damage. Apply a minimum 50% voltage derating for designs targeting long operational life (e.g., use on 5 V max rails, not 10 V max rails). For automotive or high-reliability applications, consult Murata's reliability derating guidelines and consider X7R variants that offer superior temperature stability.
The 0402 footprint requires careful PCB land pattern design per IPC-7351 nominal-density standards, with land dimensions of approximately 0.5 mm x 0.6 mm and pad-to-pad spacing of 0.5 mm. Use ENIG or OSP surface finishes to ensure reliable solder joint formation, and ensure solder paste stencil apertures are sized at 100% of the pad area. For hand prototyping or rework, use a fine-tip soldering iron (<300C) and minimal flux to avoid tombstoning.
合规信息
RoHS and REACH compliant per Murata product page. Lead-free Ni/Sn terminations suitable for Pb-free reflow up to 260C peak per JEDEC J-STD-020. AEC-Q100 qualification not applicable for standard GRM series; consult Murata GRM automotive-grade variants for AEC-Q100 requirements.
