GRM155R71A474KE01D - 0.47uF 10V X7R 0402 MLCC | Murata
MPN： GRM155R71A474KE01D ✓ 啟用中GRM155R71A474KE01D 概覽
An MLCC (multilayer ceramic capacitor) is a passive electronic component that stores charge in alternating layers of ceramic dielectric and metal electrodes. Within the component hierarchy, it belongs to the capacitor family under passive components, alongside film, tantalum, and aluminum electrolytic types. MLCCs dominate modern PCB designs because they offer high volumetric efficiency, low ESR, no polarity, and long service life without wear-out mechanisms typical of electrolytic capacitors.
Key features of the GRM155R71A474KE01D include a wide operating temperature range of -55C to +125C, Class 2 X7R dielectric stability (capacitance varies no more than ±15% over the rated temperature range), and a compact 0402 footprint with a maximum thickness of approximately 0.55 mm. The nickel-barrier, tin-plated termination is lead-free and supports reflow soldering per standard surface-mount processes.
Technically, the X7R dielectric is a ferroelectric barium-titanate-based formulation that delivers higher volumetric capacitance than Class 1 (C0G/NP0) ceramics at the cost of higher dielectric absorption, voltage coefficient, and piezoelectric microphonics. At 0.47 uF in 0402, this part leverages thin-dielectric-layer technology to achieve density once reserved for larger 0603 or 0805 cases, making it suitable for decoupling dense microcontroller and SoC power rails.
Typical applications include general-purpose decoupling and bypass for microcontrollers (Freescale/NXP Kinetis, S08, S12 families), filtering in consumer and industrial electronics, and bulk local energy storage on low-voltage 5 V and lower rails. It is classified by Murata for general-purpose use and is not recommended for safety-critical circuits without additional derating review.
Design consideration: because X7R capacitance decreases with applied DC bias, verify the effective capacitance under the actual operating voltage; derating to roughly 50% of rated voltage often preserves a safer margin, and sourcing from authorized distributors is advised to avoid counterfeit MLCCs.
This page synthesizes verified distributor specifications, drop-in alternative guidance, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 GRM155R71A474KE01D — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
GRM155R71A474KE01J
✅ 直接替換📋 參考替代品（不在目錄中）
GRM155R61A474KE15D
✅ 直接替換📋 參考替代品（不在目錄中）
GRM155R71A474KE01D 最大額定值與電氣特性
| Capacitance | 0.47 uF |
| Tolerance | ±10% |
| Rated Voltage | 10 VDC |
| Temperature Coefficient | X7R (EIA Class 2) |
| 工作溫度範圍 | -55C to +125C |
| Case / Package | 0402 (1005 Metric) |
| 安裝類型 | Surface Mount (SMD/SMT) |
| Thickness (Max) | 0.55 mm |
| Applications | General Purpose |
| Termination | Nickel barrier, tin-plated (lead-free) |
| Polarity | Non-polarized |
| Packaging | Reel - TR (Tape and Reel) |
| Part Status | Active |
| Dielectric Class | Class 2 ceramic (ferroelectric) |
| RoHS 狀態 | Compliant (lead-free per JEDEC JESD97 termination note) |
| Manufacturer Series | GRM (Monolithic Ceramic Capacitor, general purpose) |
GRM155R71A474KE01D 0402 (1005 metric) 腳位配置指南
GRM155R71A474KE01D（0402 (1005 metric) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： GRM155R71A474KE01D.
請參閱 資料表 以查看完整腳位配置。
典型應用
GRM155R71A474KE01D 適用於 6 應用s: Microcontroller Power Decoupling, Consumer Electronics Filtering, Industrial Data-Processing Equipment, Portable and Wearable Devices, IoT Sensor Nodes and Smart Home Modules, General-Purpose Board-Level Bypass.
Microcontroller Power Decoupling
The GRM155R71A474KE01D provides local charge storage for microcontroller VDD pins, absorbing the fast current transients that core and I/O logic generate on each clock edge. Its 0.47 uF value in the 0402 package yields low parasitic inductance, keeping the decoupling impedance low into the tens of MHz range where MCU switching noise concentrates. The X7R dielectric maintains usable effective capacitance on 3.3 V and 5 V rails, though designers should account for DC-bias derating by consulting Murata SimSurfing curves. Placement within 2-3 mm of each supply pin pair, with short vias to the ground plane, is essential; the small 0402 footprint makes such close placement feasible even in dense BGA breakout regions. Pair with a 10 uF bulk MLCC per rail section for distributed decoupling.
推薦
Consumer Electronics Filtering
In consumer products such as set-top boxes, appliances, and displays, the GRM155R71A474KE01D filters supply ripple and high-frequency interference on analog and digital rails. The 10 V rating comfortably covers 5 V and 3.3 V secondary rails, and the ±10% tolerance supports predictable filter corner frequencies. The X7R characteristic keeps capacitance within ±15% from -55C to +125C, covering both cold storage and hot enclosure environments. Because the part is non-polarized and rated for general-purpose use, it can be freely placed wherever board space allows; however, in circuits adjacent to acoustic components, microphonic sensitivity of Class 2 dielectrics should be considered. Standard lead-free reflow assembly and 4,000-piece reel packaging support high-volume consumer manufacturing with minimal line changeover.
推薦
Industrial Data-Processing Equipment
Murata classifies the GRM155R71A474KE01D series for industrial data-processing equipment, where it decouples embedded controllers, interface transceivers, and sensor front ends on 24 V-derived logic rails. The -55C to +125C X7R operating window accommodates unconditioned factory floors and control cabinets, and the nickel-barrier termination resists tin-whisker and leaching issues during wave or reflow assembly of mixed-technology industrial boards. Its 0.47 uF value is a common choice for CAN, RS-485, and Ethernet PHY local bypass. Designers should verify effective capacitance under bias near the 10 V limit and consider series elements or higher-voltage grades for rails with surge exposure. The small case supports retrofits and high-density industrial modules alike.
推薦
Portable and Wearable Devices
The compact 0402 footprint and 0.55 mm maximum height make the GRM155R71A474KE01D ideal for space-constrained portable and wearable designs, including fitness trackers, earbuds charging cases, and compact sensor nodes. At 0.47 uF it supplies both decoupling and light rail filtering for battery-operated SoCs running from 3.7 V lithium cells, well within the 10 V rating. Low ESR of MLCC technology reduces wasted energy relative to tantalum alternatives, marginally extending battery life in always-on circuits. Assembly is compatible with standard fine-pitch SMT lines. Designers should note X7R piezoelectric behavior near microphones or speakers, and the DC-bias capacitance drop when rails sit close to the rated voltage on boost-converter outputs.
推薦
IoT Sensor Nodes and Smart Home Modules
Wireless IoT modules with bursty transmit currents benefit from the GRM155R71A474KE01D as close-in energy reservoir for radio power amplifiers and MCU cores. The 0.47 uF value complements larger bulk capacitance, bridging the frequency gap between regulator loop response and RF transmitter microsecond-scale current pulses. Its wide -55C to +125C range suits outdoor smart-home sensors exposed to attic, garage, and exterior temperature swings. The non-polarized 0402 package permits placement on either side of dense RF modules without polarity errors, reducing assembly defects. For battery-powered nodes where every microamp matters, MLCC leakage is negligible compared with electrolytic alternatives, and the active production status of this Murata part supports long product lifecycles.
推薦
General-Purpose Board-Level Bypass
As a general-purpose MLCC, the GRM155R71A474KE01D serves as the workhorse bypass capacitor across virtually any low-voltage digital or analog board: FPGA I/O banks, logic ICs, op-amp supply pins, and reference circuits. Its 0.47 uF value sits in the sweet spot between 0.1 uF high-frequency bypass and 10 uF bulk storage, providing a mid-band impedance minimum when combined with both. The X7R dielectric and ±10% tolerance keep BOM management simple, and second sourcing from equivalent 0402 X7R 0.47 uF 10 V parts from other MLCC vendors is straightforward for supply-chain resilience. Standard 4,000-piece reels support automated kitting, and RoHS-compliant lead-free termination meets global environmental requirements for general industrial and consumer assembly.
推薦
推薦產品摘要
工程參考資料，適用於 GRM155R71A474KE01D — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | GRM155R71A474KE01J | GRM155R61A474KE15D |
|---|---|---|---|
| Package | 0402 (1005 Metric) | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same |
| Brand | Murata Manufacturing | Murata Manufacturing | Murata Manufacturing |
| Capacitance | 0.47 uF | 0.47 uF | 0.47 uF |
| Tolerance | ±10% | ±10% | ±10% |
| Rated Voltage | 10 VDC | 10 VDC | 10 VDC |
| Temperature Coefficient | X7R | X7R | X5R |
| Max Operating Temperature | +125C | +125C | +85C |
| Lifecycle Status | Active | Active | Active |
主要差異化特點
- Extended high-temperature operation (對比GRM155R61A474KE15D)
- Identical electricals in alternate reel format (對比GRM155R71A474KE01J)
- High volumetric efficiency (對比0603/0805 X7R 0.47 uF parts)
設計說明
X7R capacitance derates significantly with applied DC bias. Estimated: at close to the full 10 V rated voltage, effective capacitance of a 0402 X7R can fall 30-50% below nominal, so a nominally 0.47 uF part may deliver under 0.3 uF in-circuit. Consult Murata SimSurfing DC-bias curves for the exact characteristic before finalizing filter corner frequencies or charge budgets, and prefer operating at 50% or less of rated voltage for predictable behavior.
For decoupling duty, place the GRM155R71A474KE01D within 2-3 mm of the target IC supply pin, using short, wide traces or direct via-in-pad to the ground plane. Each millimeter of trace adds inductance that raises the decoupling impedance above the frequency band where the capacitor is effective. The 0402 land pattern should follow Murata's recommended dimensions in the datasheet; excessive pad size during reflow can cause tombstoning due to uneven solder wetting on the small 1005 metric terminals.
Avoid this part in precision analog signal paths that depend on capacitance value accuracy: X7R exhibits voltage coefficient, aging (capacitance decreases roughly over the first decades of hours), dielectric absorption, and piezoelectric microphonics. For sample-and-hold, timing, integrator, or high-fidelity audio coupling circuits, use a C0G/NP0 MLCC or film capacitor instead. For power-rail bypass and non-critical filtering, these behaviors are irrelevant and the GRM155R71A474KE01D is fully appropriate.
合規資訊
Lead-free termination per JEDEC JESD97 paragraph 3.5 and EU Commission Decision 2002/525/EC Annex II (ELV Directive 2000/53/EC), as stated in TTI part documentation. RoHS compliance stated on DigiKey listing. REACH and halogen-free status not stated in provided data.
