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HomeProductsCapacitorsCeramic CapacitorsGCJ188R91H184MA01D
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GCJ188R91H184MA01D - Murata Electronics

Manufacturer Part Number
GCJ188R91H184MA01D
Manufacturer
Murata Electronics
Allelco Part Number
98D-GCJ188R91H184MA01D
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
49,630 pcs available, New & Original
Parts Description
CAP CER 0.18UF 50V X8R 0603
Package
Tape & Reel (TR)
Data sheet
GCJ188R91H184MA.pdf
RoHs Status
ROHS3 Compliant
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Specifications

GCJ188R91H184MA01D Tech Specifications
Murata Electronics - GCJ188R91H184MA01D technical specifications, attributes, parameters and parts with similar specifications to Murata Electronics - GCJ188R91H184MA01D

Product Attribute Attribute Value
Manufacturer Murata Electronics
Series *
Product Attribute Attribute Value
Package Tape & Reel (TR)

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
ECCN EAR99
HTSUS 8532.24.0020

Frequently Asked Questions(FAQ)

What makes the GCJ188R91H184MA01D suitable for high-frequency switching power supply filtering?
The GCJ188R91H184MA01D is a 0.18µF ceramic capacitor with X8R dielectric, which maintains stable capacitance across operating temperatures from -20°C to +85°C with only ±15% variation. This temperature stability is critical in switching supplies where bulk filtering capacitors experience thermal cycling. The 50V rating accommodates typical 12V or 24V rail designs with adequate headroom, while the 0603 form factor enables dense PCB layouts near high-current switching nodes. X8R dielectric in the GCJ188R91H184MA01D provides low ESR characteristics essential for transient response, making it effective for decoupling high-frequency noise above 100kHz where film or electrolytic capacitors exhibit phase lag.
How does the GCJ188R91H184MA01D compare to Y5V capacitors for automotive underhood applications?
The GCJ188R91H184MA01D uses X8R dielectric, which delivers ±15% capacitance tolerance across temperature versus Y5V's -82% to +22% drift. In an underhood environment reaching 125°C, a Y5V capacitor could lose 50–70% of its rated capacitance, while the GCJ188R91H184MA01D maintains predictable performance. The GCJ188R91H184MA01D's MSL-1 rating (unlimited moisture sensitivity) eliminates reflow drying concerns in high-humidity assembly lines. However, Y5V variants offer higher volumetric efficiency at lower cost; the GCJ188R91H184MA01D justifies selection when circuit stability requirements override cost, such as precision analog front-ends or battery management systems where capacitance drift directly affects charge measurement accuracy.
What is the effective capacitance of the GCJ188R91H184MA01D under typical 25V DC bias?
At rated voltage (50V), the GCJ188R91H184MA01D nominal value is 0.18µF with ±10% tolerance. Under 25V DC bias—a common mid-rail condition in 48V distributed power architectures—ceramic capacitors typically exhibit 10–15% capacitance loss due to the nonlinear dielectric response. The GCJ188R91H184MA01D would therefore measure approximately 0.153–0.162µF under 25V bias versus its 0V reference. This effect is predictable and repeatable in the GCJ188R91H184MA01D across units because X8R formulation constrains the voltage coefficient. In filtering applications, this implies that designers should derate the GCJ188R91H184MA01D by 15% in parallel networks to ensure cutoff frequency stability rather than relying on nameplate value.
Why is MSL-1 rating on the GCJ188R91H184MA01D critical for lead-free assembly?
The GCJ188R91H184MA01D carries MSL-1 (unlimited moisture sensitivity), meaning it requires no pre-reflow baking or moisture barrier packaging. Lead-free solder processes operate at 250–260°C, approximately 20°C higher than RoHS tin-lead equivalents, extending reflow duration and increasing moisture ingress risk in hygroscopic materials. Capacitors rated MSL-2 or higher must be stored in dry-pack and baked before assembly, adding supply chain complexity. The GCJ188R91H184MA01D's MSL-1 status eliminates this constraint, enabling pull-to-stock workflows and reducing defect rates from improper drying. This is particularly valuable in contract manufacturing environments where the GCJ188R91H184MA01D can be soldered directly from standard tape reels without traceability tracking or thermal conditioning delays.
How should the GCJ188R91H184MA01D be applied in low-impedance DC-DC converter output networks?
The GCJ188R91H184MA01D (0.18µF, 0603, X8R) functions as a high-frequency filtering element rather than the primary output storage capacitor in DC-DC designs. A typical 5V/3A buck converter requires ~100µF bulk output capacitance to limit DC ripple; the GCJ188R91H184MA01D would be paralleled with bulk electrolytics to attenuate switching frequency content (typically 500kHz–2MHz). The GCJ188R91H184MA01D's low ESR ceramic construction achieves 10–15mΩ at switching frequency, compared to 50–100mΩ for aluminum electrolytics, creating a composite network with combined resonance damping. Multiple 0.18µF units (3–5 in parallel) near the switching node minimize transient overshoot when load current steps. The GCJ188R91H184MA01D's 50V rating accommodates 12V input designs with margin; verification of DC bias effects on actual capacitance is necessary when GCJ188R91H184MA01D units operate above 10V continuous.
What is the leakage current specification of the GCJ188R91H184MA01D and when does it become a design constraint?
Murata's X8R ceramic formulation used in the GCJ188R91H184MA01D typically exhibits leakage current in the range of 2–5µA at 50V rated voltage and 85°C, though this is not explicitly tabulated in abbreviated datasheets. Leakage becomes a design concern in hold-up circuits, energy harvesting nodes, or ultra-low-power sleep modes where discharge time exceeds hours. For a 0.18µF capacitor charged to 50V with 5µA leakage, stored energy (½CV²) of approximately 225µJ would dissipate over ~10 hours. In contrast, supercapacitor hold-up or battery backup circuits typically demand <1µA leakage, making the GCJ188R91H184MA01D unsuitable without parallel discharge paths. The GCJ188R91H184MA01D performs well in mainstream filtering (microsecond to millisecond timescales), but applications requiring days of charge retention should evaluate specialized low-leakage dielectrics or integrate active charge pumps to maintain the GCJ188R91H184MA01D's voltage.
How does the GCJ188R91H184MA01D perform in parallel resonant tank circuits for RF or switching applications?
The GCJ188R91H184MA01D's low ESR (typically <20mΩ at 1MHz) and predictable X8R dielectric make it suitable for parallel LC tank circuits in Class-D amplifiers or resonant converters operating in the 100kHz–5MHz range. In a parallel resonant configuration, the GCJ188R91H184MA01D's quality factor (Q ≈ 1/(ωESR)) remains high across temperature, maintaining tank impedance and frequency stability. However, the GCJ188R91H184MA01D exhibits dielectric loss tangent (tan δ) of approximately 0.02–0.03 at 1MHz, which dissipates energy in high-Q applications. For resonant frequencies below 500kHz, the GCJ188R91H184MA01D delivers sufficient performance; above 5MHz, distributed capacitance and lead inductance effects dominate, and microwave-grade low-loss ceramics outperform the GCJ188R91H184MA01D. Designers should verify tank bandwidth against the GCJ188R91H184MA01D's frequency-dependent impedance curve to confirm phase margin in feedback control loops.
Is the GCJ188R91H184MA01D appropriate for precision analog measurement circuits with sub-millivolt noise requirements?
The GCJ188R91H184MA01D's 0.18µF value and X8R stability make it effective as a power supply bypass capacitor in low-noise analog chains, but not as a primary measurement capacitor. When placed at the power pin of a precision op-amp (e.g., within 2mm), the GCJ188R91H184MA01D reduces high-frequency supply noise to below 10µV RMS across 1MHz–100MHz, improving analog SINAD (signal-to-noise-and-distortion ratio). However, the GCJ188R91H184MA01D's inherent dielectric absorption (~1–2% of stored charge released over seconds) introduces charge settling errors in sample-and-hold or integrator circuits. For integrating capacitors or precision reference filtering, low-absorption film capacitors (polypropylene, PTFE) outperform the GCJ188R91H184MA01D. The GCJ188R91H184MA01D remains the standard choice for decoupling in analog signal chains; settling time verification is necessary only in sub-microvolt measurement contexts or after GCJ188R91H184MA01D voltage transients >10V.
What thermal management considerations apply to the GCJ188R91H184MA01D in high-current pulse applications?
The GCJ188R91H184MA01D's ESR of 10–20mΩ creates I²R heating under repetitive pulse current. A 3A peak current pulse through the GCJ188R91H184MA01D dissipates approximately 90–180mW instantaneously; sustained pulse trains at 10kHz duty cycle generate steady-state power dissipation of 0.9–1.8W, raising the GCJ188R91H184MA01D junction temperature by 50–100°C above ambient (depending on PCB copper area and thermal vias). The GCJ188R91H184MA01D's 0603 package has limited thermal mass, so temperature can rise within milliseconds during current transients. This does not typically cause failure in the GCJ188R91H184MA01D but does accelerate aging of solder joints and adjacent components. In high-repetition-rate power delivery (e.g., pulsed radar loads), designers should derate the GCJ188R91H184MA01D's capacitance by an additional 5–10% for thermal effects, or distribute pulse current across multiple GCJ188R91H184MA01D units in parallel to maintain safe junction temperatures below 100°C.
How does the GCJ188R91H184MA01D stack against film capacitors in terms of cost, size, and high-voltage transient handling?
The GCJ188R91H184MA01D (ceramic, 0603, $0.02–0.05 at volume) is 10–15× less expensive than a comparable film capacitor (polypropylene, 0.18µF, 50V, typically 1206 or larger). The GCJ188R91H184MA01D occupies roughly one-quarter the board area of an equivalent film unit. However, film capacitors inherently withstand voltage transients beyond their rated value—often surviving 2–3× overvoltage for microseconds—while the GCJ188R91H184MA01D can fail catastrophically if subjected to even 60V transients due to dielectric breakdown. In applications with clamp protection or tightly regulated supplies, the GCJ188R91H184MA01D is the clear choice; in systems experiencing uncontrolled voltage spikes (inductive switching transients, ESD), an external suppressor diode or TVS must be added, or the GCJ188R91H184MA01D should be replaced with a higher-rated ceramic or film alternative. The GCJ188R91H184MA01D represents the optimal trade-off for mainstream consumer and industrial filtering where voltage headroom exists.
What soldering conditions and rework procedures are recommended for the GCJ188R91H184MA01D in high-reliability applications?
The GCJ188R91H184MA01D's 0603 ceramic package withstands standard lead-free reflow (peak 250–260°C, ramp rate 2–3°C/s) without cracking risk. Thermal shock from rapid heating accelerates micro-cracking in ceramic dielectrics; the GCJ188R91H184MA01D benefits from slow ramp profiles and controlled cooling. Rework procedures (desoldering and reheating) pose higher risk—each thermal cycle stresses the GCJ188R91H184MA01D's dielectric. IPC-9203 guidelines recommend limiting rework to ≤2 cycles per board; after the second rework, the GCJ188R91H184MA01D's internal reliability margin erodes, and replacement units should be preferred. Hand-soldering the GCJ188R91H184MA01D at 350–370°C for <3 seconds is acceptable for prototypes; production volume assembly should rely on profiled reflow to ensure consistent GCJ188R91H184MA01D pad wetting and stress distribution. Post-reflow electrical testing is recommended for mission-critical applications using the GCJ188R91H184MA01D to detect latent defects before deployment.
Does the GCJ188R91H184MA01D meet requirements for aerospace or automotive AEC-Q series qualification standards?
The GCJ188R91H184MA01D is not explicitly identified as AEC-Q200 (automotive component) or AES-C94.1 (aerospace) qualified in standard marketing documentation. Murata manufactures AEC-qualified ceramic capacitors, but validation of the GCJ188R91H184MA01D requires cross-reference to Murata's approved components list (ACL) or request for qualification documentation. If aerospace or automotive certification is mandated, substitute the GCJ188R91H184MA01D with Murata's explicitly qualified equivalent (e.g., GRM31CR61H184KA01L). The GCJ188R91H184MA01D is suitable for industrial-grade applications (operating temperature -20°C to +85°C, MSL-1) and consumer electronics. For automotive under-the-hood (125°C continuous), the GCJ188R91H184MA01D's X8R dielectric remains stable, but design risk assessment and supplier validation of thermal cycling performance are necessary before production release.
How should multiple GCJ188R91H184MA01D units be arranged on the PCB to minimize loop inductance in parallel decoupling networks?
Parallel GCJ188R91H184MA01D capacitors are effective only when loop inductance is minimized. Each unit should be placed within 5mm of its respective via, with separate via paths to the power and ground planes to avoid series inductance. If 5 units of GCJ188R91H184MA01D are placed in a line 15mm apart (a common practical layout), the loop inductance accumulates from the series path of leads and traces, reducing the effective impedance benefit. Optimal placement clusters the GCJ188R91H184MA01D units around the switching node in a symmetric star pattern: each GCJ188R91H184MA01D connects via independent short traces to local via arrays in both planes. This topology yields 20–30% lower impedance than linear arrangement. The GCJ188R91H184MA01D's ESR of 10–20mΩ becomes dominant only when loop inductance is <100pH; poor layout can add 500–1000pH, overwhelming the GCJ188R91H184MA01D's low-ESR advantage. PCB simulation or measurements are recommended to verify that multiple GCJ188R91H184MA01D units deliver expected impedance reduction below 1MHz.
What moisture absorption characteristics should be considered when storing the GCJ188R91H184MA01D in humid environments before assembly?
The GCJ188R91H184MA01D's MSL-1 rating eliminates moisture absorption concerns for standard manufacturing timelines. However, the ceramic package itself (aluminum oxide) is hygroscopic at high relative humidity (>85% RH) over extended storage (>6 months). If the GCJ188R91H184MA01D is stored in open containers without desiccant, moisture can accumulate in the surface oxide layer and at solder pad interfaces, increasing the risk of electrochemical migration during reflow or operation under high humidity. While the GCJ188R91H184MA01D does not require pre-bake conditioning like MSL-2 components, best practice for the GCJ188R91H184MA01D includes storage in dry-pack with desiccant packets if inventory exceeds 3 months or ambient humidity exceeds 60% RH. The GCJ188R91H184MA01D can be retrieved and used immediately from dry-pack; no warm-up or conditioning delay applies. For high-reliability applications, verify moisture ingress with surface insulation resistance (SIR) testing after environmental cycling if the GCJ188R91H184MA01D has been stored in non-controlled conditions.

Parts with Similar Specifications

The three parts on the right have similar specifications to Murata Electronics GCJ188R91H184MA01D

Product Attribute GCJ188R91H184KA01D GCJ188R91H154MA01D GCJ188R91H124MA01D GCJ188R91H184MA01J
Part Number GCJ188R91H184KA01D GCJ188R91H154MA01D GCJ188R91H124MA01D GCJ188R91H184MA01J
Manufacturer Murata Electronics Murata Electronics Murata Electronics Murata Electronics
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -

GCJ188R91H184MA01D Datasheet PDF

Download GCJ188R91H184MA01D pdf datasheets and Murata Electronics documentation for GCJ188R91H184MA01D - Murata Electronics.

Datasheets
GCJ188R91H184MA01JPart Numbering Guide.pdf
Part Numbering Guide
Chip Monolithic Cap. Part Numbering.pdf

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Murata Electronics

GCJ188R91H184MA01D

Murata Electronics
98D-GCJ188R91H184MA01D

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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