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Home > Products > Capacitors > Ceramic Capacitors > 1808J1000221KXR
Knowles Syfer
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1808J1000221KXR

In Stock 296622 pcs Reference Price(In US Dollars)
1+
$0.2254
200+
$0.0873
500+
$0.0842
1000+
$0.0827
Manufacturer Part Number:
1808J1000221KXR
Manufacturer / Brand
Knowles Syfer
Part of Description:
CAP CER 220PF 100V X7R 1808
Datasheets:
1808J1000221KXR(1).pdf1808J1000221KXR(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 296622 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number 1808J1000221KXR
Manufacturer / Brand Knowles Syfer
Stock Quantity 296622 pcs Stock
Category Capacitors > Ceramic Capacitors
Description CAP CER 220PF 100V X7R 1808
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Rated 100V
Tolerance ±10%
Thickness (Max) 0.079" (2.00mm)
Temperature Coefficient X7R
Size / Dimension 0.177" L x 0.079" W (4.50mm x 2.00mm)
Series -
Ratings -
Package / Case 1808 (4520 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 125°C
Mounting Type Surface Mount, MLCC
Lead Style -
Lead Spacing -
Height - Seated (Max) -
Features -
Failure Rate -
Capacitance 220 pF
Base Product Number 1808J
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.

PayPal:

PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
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)
Beneficiary Bank SWIFT : COMMHKHK
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

Why would a design specify the 1808J1000221KXR in an 1808 footprint for a relatively low 220pF capacitance instead of a smaller 0603 package?
The 1808J1000221KXR is often selected when circuit board creepage and clearance distances are a primary design constraint. In 100V or higher potential applications, the 4.5mm length of the 1808 package provides a larger physical gap between solder pads than smaller MLCCs, reducing the risk of surface arcing or insulation breakdown under humid or contaminated conditions.
How does the board flexure risk affect the integration of the Knowles Syfer 1808J1000221KXR in industrial hand-held devices?
Due to its 4.5mm length, the 1808J1000221KXR is more susceptible to mechanical stress and cracking than smaller components when the PCB is subjected to bending or vibration. Engineers integrating the 1808J1000221KXR should place the component parallel to the direction of least stress or evaluate the use of milling slots to isolate the part from board strain during assembly and field use.
When replacing the 1808J1000221KXR with a C0G dielectric alternative, what performance shifts should be expected in resonant circuits?
Substituting the 1808J1000221KXR, which uses an X7R dielectric, with a C0G alternative will eliminate the piezoelectric effect and significantly improve temperature stability. However, the 1808J1000221KXR offers a specific volumetric efficiency; while C0G is more stable, it may require a larger physical case size for the same 100V rating in higher capacitance values, though at 220pF, the primary trade-off is the X7R's tolerance to voltage-induced capacitance changes.
What is the expected capacitance drift for the 1808J1000221KXR when operating at the upper limit of its -55°C to 125°C temperature range?
The X7R dielectric of the 1808J1000221KXR limits capacitance change to within ±15% across its entire operating temperature range. For high-precision timing applications near 125°C, engineers must account for this non-linear shift, as the 1808J1000221KXR does not provide the near-zero temperature coefficient characteristic of Class 1 dielectrics like NP0.
Does the 100V DC bias significantly reduce the effective capacitance of the 1808J1000221KXR in bypass applications?
While all X7R capacitors exhibit a Voltage Coefficient of Capacitance (VCC), the 1808J1000221KXR benefits from its large 1808 case size relative to its low 220pF value. This ratio typically results in a less aggressive capacitance drop at the 100V rated limit compared to high-density MLCCs in smaller packages, making the 1808J1000221KXR more stable for high-voltage DC filtering roles.
What are the soldering profile considerations to prevent thermal shock in the 1808J1000221KXR during multi-stage reflow?
The thermal mass of the 1808J1000221KXR requires a controlled pre-heat phase to avoid internal delamination or micro-cracking. Because the 1808J1000221KXR is a larger MLCC, maintaining a ramp-up rate of less than 3°C per second and ensuring the temperature differential between the component and the solder wave or reflow peak is minimized is necessary to ensure the ceramic structure remains intact.
Can the 1808J1000221KXR be used in AC line filtering despite its general-purpose rating?
The 1808J1000221KXR is rated for 100V DC and is suitable for DC-to-DC converters and signal decoupling, but it lacks the safety certifications (such as X1 or Y2 ratings) required for direct AC mains filtering. Utilizing the 1808J1000221KXR in primary-side AC applications would bypass necessary transient surge protection and could lead to component failure under line voltage spikes.
How does the 1808J1000221KXR perform regarding Equivalent Series Resistance (ESR) in high-frequency noise suppression?
The 1808J1000221KXR features a relatively low ESR due to the X7R formulation and high-quality termination. In high-frequency decoupling scenarios, the physical geometry of the 1808J1000221KXR increases the Equivalent Series Inductance (ESL) compared to an 0603 part, which shifts the self-resonant frequency. Designers should model the 1808J1000221KXR parasitic parameters to ensure it effectively targets the intended EMI frequency band.

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