GRM188R71C105KA12D - 1uF 16V X7R 0603 MLCC | Murata
MPN: GRM188R71C105KA12D β Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.011 | $0.01 |
| 10 | $0.01 | $0.10 |
| 100 | $0.0095 | $0.95 |
| 500 | $0.0092 | $4.60 |
| 1,000 | $0.009 | $9.00 |
GRM188R71C105KA12D Overview
A multilayer ceramic capacitor (MLCC) is a passive component that stores charge using multiple layers of ceramic dielectric interleaved with metal electrodes. Within the passive-component hierarchy, it sits under capacitors, and within Murata's naming system the GRM prefix denotes a chip MLCC for SMD mounting. MLCCs are the most widely used capacitor class in modern electronics due to their small size, low ESR, and reliability.
Key features of this part include the X7R Class 2 dielectric, which maintains useful capacitance from -55C to +125C with a maximum capacitance change of +/-15%, making it suitable for decoupling and bypass roles across the full industrial temperature range. The 16 V rating provides headroom for 12 V rails, and the 0603 footprint offers high capacitance density for dense PCB layouts. The K tolerance code guarantees +/-10% capacitance accuracy.
The R71 characteristic code identifies the X7R dielectric within the R series temperature characteristic family. Like all Class 2 ceramics, capacitance derates with applied DC bias and aging occurs over time, so designers should verify effective capacitance at operating bias. Soldering follows standard reflow profiles for 0603 chip components.
Typical applications include power-supply input/output decoupling for microcontrollers and FPGAs, general-purpose bypass filtering, DC-DC converter input/output capacitors, and coupling or smoothing in consumer, industrial, and communication equipment. Murata's product page lists transportation, traffic control, disaster prevention/security, and industrial data-processing equipment among target applications.
Design consideration: derate the applied DC voltage well below 16 V and account for DC-bias capacitance loss, which on a 1 uF X7R 0603 can be significant at high bias; verify effective capacitance with Murata's SimSurfing tool.
This page synthesizes distributor pricing, drop-in alternative options, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for GRM188R71C105KA12D 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:
GRM188R71C105KA12J
β Drop-Inπ Reference alternative (not in catalog)
GRM188R71C105KA15D
β Drop-Inπ Reference alternative (not in catalog)
GRM188C71C105KA12D
β Drop-Inπ Reference alternative (not in catalog)
GRM188R71C105KA12D Maximum Ratings & Electrical Characteristics
| Capacitance | 1 uF |
| Tolerance | +/-10% (K) |
| Rated Voltage | 16 V DC |
| Temperature Coefficient | X7R (R7 characteristic) |
| Operating Temperature Range | -55C to +125C |
| Temperature Characteristic Limits | +/-15% over -55C to +125C (X7R) |
| Package / Case | 0603 (1608 Metric) |
| Case Size | 1.6 mm x 0.8 mm |
| Mounting Type | Surface Mount (SMD/SMT) |
| Series | GRM (Hi-Cap, 1 uF and over) |
| ECCN (US) | EAR99 |
| HTS Code | 8532.24.00.20 |
| Automotive Grade | No |
| Recommended Applications | Consumer electronics and industrial equipment (per Murata) |
GRM188R71C105KA12D 1.6 mm x 0.8 mm Pin Configuration Guide
Pin configuration for GRM188R71C105KA12D (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 GRM188R71C105KA12D.
Refer to the datasheet for full pin configuration.
Typical Applications
GRM188R71C105KA12D is suitable for 6 applications: Power Rail Decoupling for MCUs and FPGAs, DC-DC Converter Input and Output Filtering, Industrial Automation Equipment, Consumer Electronics Signal Smoothing, Transportation and Traffic Control Equipment, Networking and Communication Boards.
Power Rail Decoupling for MCUs and FPGAs
The GRM188R71C105KA12D's 1 uF capacitance, 16 V rating, and compact 0603 footprint make it a standard decoupling capacitor for microcontroller and FPGA power pins. Placed within a few millimeters of each supply pin with short vias to the ground plane, its low parasitic inductance provides a low-impedance path for transient load currents. Because X7R capacitance derates under DC bias, verify the effective value at the rail voltage using Murata's SimSurfing tool; on a 3.3 V rail the loss is modest, but on higher rails it becomes significant. The X7R dielectric remains stable across the -55C to +125C industrial range.
Recommended
DC-DC Converter Input and Output Filtering
In buck and boost converter designs, the GRM188R71C105KA12D serves as a 1 uF input or output ceramic capacitor. Its low ESR suppresses input ripple current spikes and, on the output, works with the converter's control loop for fast transient response. The 16 V rating comfortably covers 12 V input buses with margin. Designers must account for X7R DC-bias derating when sizing output capacitance for load-transient targets, and ensure the switching frequency does not excite acoustic or piezoelectric ringing in the ceramic. Murata's Hi-Cap GRM series is explicitly intended for such 1 uF-and-over smoothing roles in industrial equipment.
Recommended
Industrial Automation Equipment
Murata's product page lists industrial data-processing and control equipment among the target applications for the GRM188R71C105KA12#. The X7R dielectric's -55C to +125C range and the part's high volumetric efficiency support dense PLC I/O modules, motor-drive control boards, and sensor interface boards where many decoupling capacitors fit in limited board area. The 1 uF value bridges the gap between bulk capacitance and high-frequency local bypass, complementing larger electrolytic bulk capacitors. Designers should follow standard MLCC reflow profiles and avoid flex-stress placement near board edges to prevent cracking in industrial vibration environments.
Recommended
Consumer Electronics Signal Smoothing
For consumer products such as set-top boxes, displays, and audio peripherals, the GRM188R71C105KA12D provides cost-effective 1 uF smoothing and coupling in signal and low-power supply circuits. The +/-10% K tolerance keeps value spread tight across production lots, and the tiny 1.6 x 0.8 mm 0603 case supports high-density layouts typical of consumer PCBAs. Note that X7R capacitance aging and bias sensitivity make it unsuitable for precision timing elements; for those, use C0G dielectrics instead. As the part is in last-time-buy status, new consumer designs should qualify an active equivalent early in development.
Recommended
Transportation and Traffic Control Equipment
Murata lists transportation equipment and traffic control equipment as recommended application categories for this capacitor. The wide -55C to +125C X7R operating range tolerates the thermal extremes of roadside cabinets and vehicle electronics, while the 1 uF value handles decoupling of processors, transceivers, and sensor front ends. The GRM series construction offers robust termination adhesion for reliability under thermal cycling. Engineers in these safety-relevant domains should apply appropriate derating (typically holding applied DC voltage well below the 16 V rating), account for DC-bias capacitance loss, and verify long-term availability given the announced discontinuation of this part number.
Recommended
Networking and Communication Boards
On router, switch, and line-card PCBAs, the GRM188R71C105KA12D decouples Ethernet PHYs, controllers, and PLL supply pins where clean, low-noise rails directly affect signal integrity. The 0603 case minimizes loop inductance for high-frequency bypass, complementing bulk capacitance elsewhere on the board. The 16 V rating covers auxiliary 12 V supplies as well as 3.3 V and 5 V logic rails. Because X7R exhibits DC-bias derating and piezoelectric behavior, keep it out of low-level analog reference paths and confirm effective capacitance under bias for sensitive PLL loops. Murata's Hi-Cap GRM lineup was developed specifically for 1 uF-and-over roles in such equipment.
Recommended
Recommended Products Summary
Engineering reference data for GRM188R71C105KA12D β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | GRM188R71C105KA12J | GRM188R71C105KA15D | GRM188C71C105KA12D |
|---|---|---|---|---|
| Package | 0603 (1608 Metric) | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same |
| Brand | Murata Manufacturing | Murata Manufacturing | Murata Manufacturing | Murata Manufacturing |
| Capacitance | 1 uF | 1 uF | 1 uF | 1 uF |
| Tolerance | +/-10% (K) | +/-10% (K) | +/-10% (K) | +/-10% (K) |
| Rated Voltage | 16 V DC | 16 V DC | 16 V DC | 16 V DC |
| Dielectric | X7R | X7R | X7R | X7R |
| Operating Temperature | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C |
Key Differentiators
- Identical electricals with packaging-code flexibility (vs GRM188R71C105KA12J)
- High capacitance density for 0603 (vs GRM188R71C105KA12D at 1 uF in 0603)
- Lifecycle risk vs. same-family siblings (vs GRM188C71C105KA12D)
Design Notes
X7R MLCCs lose effective capacitance under DC bias and age over time (a few percent per decade-hour). For a 1 uF 16 V X7R 0603, applying a rail near the rated voltage can reduce effective capacitance substantially. Verify effective capacitance at your actual bias using Murata's SimSurfing tool before finalizing decoupling budgets or timing assumptions. Never rely on nominal 1 uF for precision timing with this dielectric.
Keep the 0603 lands close to the IC supply pin and use short, wide traces or via-in-pad to the ground plane to minimize loop inductance. Avoid placing MLCCs within 3 mm of board edges or near screw-mount/split locations where board flex during depaneling can crack the ceramic, creating latent shorts. Standard reflow profiles for 0603 chip components apply; hand soldering with rapid thermal gradients should be avoided.
The 16 V DC rating provides usable margin on 12 V rails, but for automotive load-dump transients or surge-prone industrial supplies add TVS protection upstream or select a higher-voltage MLCC. On switching converters, ensure the capacitor's ripple current and RMS rating are respected; parallel devices can share ripple current and reduce effective ESR. Estimated: for a 12 V rail, margin is only 4 V (25%), so bias-derated capacitance should be measured, not assumed.
Compliance Information
Automotive qualification: No (per cross-reference data, Automotive = No for GRM188R71C series). ECCN EAR99; HTS 8532.24.00.20. RoHS/REACH status not stated in provided data - verify on Murata's official product page.
