Choose your country or region.

EnglishFrançaispolskiSlovenija한국의DeutschSvenskaSlovenskáMagyarországItaliaहिंदीрусскийTiếng ViệtSuomiespañolKongeriketPortuguêsภาษาไทยБългарски езикromânescČeštinaGaeilgeעִבְרִיתالعربيةPilipinoDanskMelayuIndonesiaHrvatskaفارسیNederlandTürk diliΕλλάδαRepublika e ShqipërisëአማርኛAzərbaycanEesti VabariikEuskeraБеларусьíslenskaBosnaAfrikaansIsiXhosaisiZuluCambodiaსაქართველოҚазақшаAyitiHausaКыргыз тилиGalegoCatalàCorsaKurdîLatviešuພາສາລາວlietuviųLëtzebuergeschmalaɡasʲМакедонскиMaoriМонголулсবাংলা ভাষারမြန်မာनेपालीپښتوChicheŵaCрпскиSesothoසිංහලKiswahiliТоҷикӣاردوУкраїнаO'zbekગુજરાતીಕನ್ನಡkannaḍaதமிழ் மொழி繁体中文
Home > Products > Capacitors > Ceramic Capacitors > 1210Y1K00391FFR
Knowles Syfer
1608 1210-(3225-Metric)-2,00mm-Tan.jpg ImageView larger image
Image may be representation.
See specs for product details.

1210Y1K00391FFR

In Stock 22339 pcs Reference Price(In US Dollars)
1+
$2.4232
200+
$0.9378
500+
$0.9043
1000+
$0.8884
Manufacturer Part Number:
1210Y1K00391FFR
Manufacturer / Brand
Knowles Syfer
Part of Description:
CAP CER 390PF 1KV C0G/NP0 1210
Datasheets:
1210Y1K00391FFR(1).pdf1210Y1K00391FFR(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 22339 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

Inquiry Online

Please complete all required fields with your contact information.Click "SUBMIT REQUEST" we will contact you shortly by email. Or Email us: Info@IC-Components.com
Part Number
Manufacturer
Require Quantity
Target Price(USD)
Company Name
Contact Name
E-mail
Phone
Message
Please enter Verify Code and click "Submit"
Part Number 1210Y1K00391FFR
Manufacturer / Brand Knowles Syfer
Stock Quantity 22339 pcs Stock
Category Capacitors > Ceramic Capacitors
Description CAP CER 390PF 1KV C0G/NP0 1210
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Rated 1000V (1kV)
Tolerance ±1%
Thickness (Max) 0.079" (2.00mm)
Temperature Coefficient C0G, NP0
Size / Dimension 0.126" L x 0.098" W (3.20mm x 2.50mm)
Series FlexiCap™
Ratings -
Package / Case 1210 (3225 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 125°C
Mounting Type Surface Mount, MLCC
Lead Style -
Lead Spacing -
Height - Seated (Max) -
Features Soft Termination, High Temperature
Failure Rate -
Capacitance 390 pF
Base Product Number 1210Y
Applications High Reliability, Boardflex Sensitive

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: PayPal@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

What integration constraints should engineers consider when using the Knowles Syfer 1210Y1K00391FFR in high-voltage circuits on flex-sensitive PCBs?
The 1210Y1K00391FFR features FlexiCap™ soft termination, which allows the board to bend nearly twice as much before mechanical cracking of the ceramic body occurs compared to standard termination MLCCs. This provides additional margin during assembly processes involving board flex or in applications with mechanical vibration. Designers should still evaluate overall PCB deflection limits in the specific assembly flow, as the soft termination layer absorbs stress but does not eliminate the need for controlled handling.
How does the C0G/NP0 dielectric of the 1210Y1K00391FFR behave under DC bias and temperature variations in precision timing or filtering applications?
The C0G/NP0 dielectric in the 1210Y1K00391FFR maintains capacitance stability with a temperature coefficient of 0 ±30 ppm/°C across -55°C to 125°C and exhibits negligible change under applied DC voltage. This supports consistent performance in resonant circuits or timing networks where capacitance drift could affect frequency response or phase accuracy, unlike Class II dielectrics that show significant bias and temperature dependence.
Is the Knowles Syfer 1210Y1K00391FFR suitable for replacement of standard 1210 390pF 1kV MLCCs in boardflex-sensitive industrial equipment?
The 1210Y1K00391FFR offers FlexiCap™ termination that improves mechanical robustness against board bending and temperature cycling stresses compared to standard sintered termination parts. In designs where assembly or operational flex has previously led to cracking in conventional 1210 C0G parts, this model reduces the risk of internal fractures propagating to short-circuit conditions, though layout and soldering profiles still require optimization for the 3.20 mm x 2.50 mm x 2.00 mm maximum dimensions.
What power supply decoupling or snubber configuration considerations arise when integrating the 1210Y1K00391FFR in 1kV-rated systems?
With its 1000V rating and low dissipation factor inherent to C0G/NP0, the 1210Y1K00391FFR can handle high-voltage transients or ringing in switching circuits without significant self-heating. Engineers should verify that peak voltages remain within the rated limit across the full operating temperature range and account for the ±1% tolerance when calculating total capacitance in parallel or series arrangements for voltage sharing.
When migrating from non-FlexiCap 1210 C0G 390pF 1kV capacitors to the Knowles Syfer 1210Y1K00391FFR, what design adjustments may be necessary?
The primary difference is the soft termination layer in the 1210Y1K00391FFR, which enhances resistance to board flex and thermal cycling but may slightly alter the effective solder joint geometry during reflow. Layout footprints remain compatible with standard 1210 (3225 metric) pads, yet validation of solder fillet formation and shear strength is recommended to confirm the improved mechanical performance translates to the specific assembly process without introducing new variables in high-reliability designs.
In long-term industrial applications exposed to repeated thermal cycling, how does the 1210Y1K00391FFR perform relative to conventional high-voltage MLCCs?
The FlexiCap™ construction in the 1210Y1K00391FFR supports extended temperature cycling between -55°C and 125°C with reduced likelihood of cracking compared to standard termination equivalents. Combined with the inherent stability of the C0G dielectric, this supports sustained capacitance and insulation resistance over time in environments involving frequent thermal excursions, provided operating conditions stay within the specified limits.
Are there application boundaries where the Knowles Syfer 1210Y1K00391FFR may not be the optimal choice for a 390pF 1kV position?
For ultra-low ESR or extremely high-frequency RF matching where even minor parasitic effects matter, or in applications demanding significantly higher capacitance density within the same 1210 footprint, alternative constructions or dielectrics may warrant evaluation. The 1210Y1K00391FFR prioritizes voltage withstand, stability, and mechanical robustness in high-reliability or boardflex-sensitive scenarios rather than maximizing volumetric efficiency.
What reliability factors should technical buyers evaluate when specifying the 1210Y1K00391FFR for high-reliability equipment under mechanical stress?
The soft termination of the 1210Y1K00391FFR mitigates stress transfer to the ceramic body, lowering the probability of flex-induced cracks that could compromise insulation in 1kV environments. In combination with ROHS3 compliance, unlimited MSL, and C0G characteristics, this supports predictable behavior in vibration-prone or large-board assemblies, though full system-level qualification under expected deflection and cycling profiles remains essential for long-term field performance.
How does the ±1% tolerance and C0G dielectric of the Knowles Syfer 1210Y1K00391FFR influence component selection in matched capacitor networks?
The tight ±1% tolerance on the 390pF value, paired with the low temperature and voltage coefficients of C0G/NP0, enables tighter matching in differential or balanced circuits without additional trimming. Designers can leverage this for applications such as precision filters or timing where cumulative tolerance stack-up must remain minimal across the -55°C to 125°C range.
When considering alternatives to the 1210Y1K00391FFR for cost-sensitive designs with lower mechanical stress, what trade-offs emerge?
Standard termination 1210 C0G 390pF 1kV parts may suffice in applications with minimal board flex or controlled assembly processes, potentially at a lower unit cost. However, switching to the FlexiCap™ 1210Y1K00391FFR introduces the soft termination layer that extends the safe bending margin and cycling endurance, which can reduce field failure rates in designs where mechanical margins are otherwise tight.

Recent Reviews

Leave Comment
Hello, you have not logged in, please log in
User Login

Forgot password?

No account yet? Register now

Tips
Please speak legally
Your email will be hidden
Please complete all required fields ( denoted with* )
Mark
5.0

You May Also Be Interested In:


1210Y1K00391FFR

1210Y1K00391FFR

Knowles Syfer

CAP CER 390PF 1KV C0G/NP0 1210

In Stock: 22339

SUBMIT RFQ