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Home > Products > Capacitors > Ceramic Capacitors > 0505J050P500BQT
Knowles Syfer
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0505J050P500BQT

In Stock 133729 pcs Reference Price(In US Dollars)
1+
$0.397
200+
$0.1537
500+
$0.1483
1000+
$0.1456
Manufacturer Part Number:
0505J050P500BQT
Manufacturer / Brand
Knowles Syfer
Part of Description:
CAP CER 0.5PF 50V C0G/NP0 0505
Datasheets:
0505J050P500BQT(1).pdf0505J050P500BQT(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 133729 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number 0505J050P500BQT
Manufacturer / Brand Knowles Syfer
Stock Quantity 133729 pcs Stock
Category Capacitors > Ceramic Capacitors
Description CAP CER 0.5PF 50V C0G/NP0 0505
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Rated 50V
Tolerance ±0.1pF
Thickness (Max) 0.050' (1.27mm)
Temperature Coefficient C0G, NP0
Size / Dimension 0.055' L x 0.055' W (1.40mm x 1.40mm)
Series -
Ratings -
Package / Case 0505 (1313 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 125°C
Mounting Type Surface Mount, MLCC
Lead Style -
Lead Spacing -
Height - Seated (Max) -
Features High Q, Low Loss
Failure Rate -
Capacitance 0.5 pF
Base Product Number 0505J
Applications General Purpose

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
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Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

What are the key design constraints when integrating the 0505J050P500BQT into high-frequency RF matching networks or resonant circuits?
The 0505J050P500BQT, with its 0.5 pF ±0.1 pF value in the 0505 (1313 Metric) package, presents low parasitic inductance due to the small case size, which supports operation well into the GHz range where the high Q and low loss C0G/NP0 dielectric minimizes energy dissipation. Designers typically need to account for board trace parasitics and via inductance that can exceed the capacitor's contribution at very high frequencies; symmetric placement and short, wide traces help maintain the intended reactance. The 50V rating limits peak RF voltage swings to avoid exceeding the dielectric strength in high-power applications.
How does the 0505J050P500BQT behave in terms of self-resonance and effective capacitance when used in microwave oscillator or filter designs?
In the 0505J050P500BQT, the combination of the ultra-low capacitance value and compact 1.40 mm x 1.40 mm x 1.27 mm maximum dimensions results in a high self-resonant frequency, often extending beyond typical application bands for such low-pF parts. At microwave frequencies, the series resonant point is dominated more by mounting inductance than the capacitor itself, so engineers often model the part with measured S-parameters rather than ideal values to predict the exact frequency response in the target circuit.
Can the 0505J050P500BQT be used in applications requiring tight capacitance stability across the full -55°C to 125°C operating range?
The 0505J050P500BQT employs C0G/NP0 dielectric, which maintains capacitance variation within ±30 ppm/°C or better, making the 0.5 pF nominal value highly predictable across temperature without additional compensation networks in precision timing or RF circuits. This stability supports consistent performance in designs where drift could shift resonance or matching points outside acceptable limits.
What power supply or voltage derating considerations apply when selecting the 0505J050P500BQT for long-term operation in industrial control systems?
With a 50V rated voltage, the 0505J050P500BQT allows operation up to the full rating in DC bias scenarios typical of many industrial boards, but in circuits with superimposed AC or transient voltages, engineers commonly apply a 50% derating to extend mean time between failures under continuous stress. The MSL 1 rating and RoHS3 compliance simplify integration into standard reflow processes without special moisture precautions.
Is the 0505J050P500BQT suitable for high-power RF amplifier output matching where low loss is critical, or are there boundary conditions?
The high Q and low loss characteristics of the 0505J050P500BQT support its use in RF power applications by reducing self-heating compared to higher-loss dielectrics, but the small 0505 package geometry limits thermal dissipation, so designers evaluate junction temperature rise using the part's ESR at the operating frequency and available copper heatsinking on the PCB. It performs best in moderate power levels where voltage across the part stays comfortably below 50V.
When migrating from a similar 0.5 pF C0G capacitor in 0603 or larger package to the 0505J050P500BQT, what layout and performance trade-offs should be evaluated?
Switching to the 0505J050P500BQT from a larger package reduces parasitic inductance and improves high-frequency response due to the smaller physical dimensions, but requires a tighter PCB footprint (1.40 mm x 1.40 mm) that may necessitate re-routing nearby traces or vias. The tolerance of ±0.1 pF remains comparable, yet the reduced case size can slightly alter stray capacitance to ground planes, often requiring minor simulation adjustments to re-center matching networks.
What reliability factors come into play when deploying multiple 0505J050P500BQT units in aerospace or defense systems with extended thermal cycling?
The 0505J050P500BQT, constructed as a multilayer ceramic capacitor with C0G/NP0 dielectric, exhibits minimal capacitance shift or insulation resistance degradation under repeated thermal cycling between -55°C and 125°C. In high-reliability assemblies, engineers often verify board-level strain relief and avoid excessive flexure near the part to maintain long-term termination integrity in vibration-prone environments.
How does the 0505J050P500BQT compare to alternatives from other manufacturers like Murata or TDK when considering replacement in an existing RF design?
The 0505J050P500BQT offers equivalent C0G/NP0 stability and high Q performance to similar low-pF parts from other vendors, with the primary differences appearing in termination finish consistency and measured Q at specific GHz frequencies. Migration typically involves validating the new part's S-parameters in the circuit simulator, as minor variations in electrode geometry can influence effective series resistance and self-resonance by small but measurable amounts in narrowband applications.
What configuration or mounting methods optimize the performance of the 0505J050P500BQT in precision instrumentation where parasitic effects must be minimized?
Surface-mount placement of the 0505J050P500BQT on a controlled-impedance PCB with ground vias placed symmetrically around the pads helps cancel mutual inductance and keeps the effective capacitance close to the nominal 0.5 pF. Avoiding overlapping ground planes directly under the part or using cutouts can further reduce unwanted shunt capacitance in sensitive analog or RF sections.
In what scenarios might the 0505J050P500BQT require additional considerations for moisture sensitivity or soldering processes during board assembly?
Rated at MSL 1 (unlimited floor life), the 0505J050P500BQT tolerates standard reflow soldering profiles without baking, yet the thin 0505 package can experience thermal shock if ramp rates exceed typical recommendations, potentially affecting termination adhesion. Engineers align peak temperatures and dwell times with the component's nickel-barrier tin-plated construction to preserve solder joint reliability over repeated thermal excursions.

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Knowles Syfer

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